The document provides a detailed overview on the basic principles of operating a biotech or micro laboratory along with basic techniques with which to handle organisms, chemicals &equipment and ensuring your own, your colleagues and your environment's safety.
The document discusses biosafety definitions, biological risk assessment, and guidelines for working with genetically modified organisms (GMOs). It defines biosafety as ensuring safety in using, handling, and disposing of biological organisms. Risk assessment of GMOs involves characterizing the agent, identifying hazards, evaluating risks, and applying management strategies. The guidelines classify GMOs based on their history of safe use and specify containment levels and approvals required for field testing.
Biosafety aims to prevent large-scale biological harm to both the environment and human health. It involves regularly reviewing safety protocols in laboratories working with biological materials. Risks arise from the samples and equipment used, and can threaten both workers and the outside community if safety regulations are not followed. Proper risk assessment of pathogens considers factors like infectiousness, transmission methods, treatment options, and containment facilities available.
The document discusses basic principles of biosafety. It begins by defining biosafety as safety from exposure to infectious agents. It then discusses biosafety levels 1-4 which provide increasing levels of containment for biological hazards. It also discusses important biosafety concepts like standard microbiological practices, safety equipment, facility design and construction that help prevent exposure to biological hazards in research and clinical settings.
The document outlines India's biosafety guidelines for genetically engineered organisms (GEOs). It discusses the various committees that implement the guidelines: the Institutional Biosafety Committee regulates research, the Review Committee on Genetic Manipulation reviews high-risk research, and the Genetic Engineering Approval Committee approves large-scale use of GEOs. The guidelines establish containment levels and review processes to minimize risks from GEOs and ensure public health and environmental safety.
This document provides information on performing risk assessments for various types of biosafety work. It discusses risk assessments for microbiological work, animal biosafety, genetically modified plants, and genetically modified organisms. For each type of risk assessment, it identifies key factors to consider such as pathogenicity, routes of infection, survival in the environment, and availability of treatments. It emphasizes that risk assessments should be performed by those most familiar with the specific organisms, equipment, and facilities being used.
Biosafety is the application of safety precautions that reduce a Laboratory based risk of exposure to a potentially infectious material and limit contamination of the working and surrounding environment.
The primary principle of biosafety is “Containment”.
Containment
The action of keeping harmful things under control and within limits
Or
A series of safe methods for managing infectious bacteria in the laboratory.
Water Pollution and its control through biotechnologyRachana Tiwari
Water pollution occurs from both point and non-point sources and can be physical, chemical, or biological in nature. It affects plants and organisms in bodies of water. Biotechnological control of water pollution uses aerobic and anaerobic treatment processes. Aerobic processes use microorganisms like Pseudomonas and algae to break down pollutants, and occur in suspended growth systems like activated sludge or attached growth systems like trickling filters. Anaerobic processes use microbes like Peptococcus anaerobus and Escherichia coli to treat waste in the absence of oxygen in digesters.
The document provides an introduction to biosafety, explaining that it aims to reduce risk of exposure to infectious materials through proper safety precautions and procedures. It discusses the need for biosafety in laboratories processing infectious agents and around recombinant DNA to protect workers and the environment. The document also outlines different biosafety levels and associated practices, containment facilities, risk groups of pathogens, and considerations for risk assessments.
The document discusses biosafety definitions, biological risk assessment, and guidelines for working with genetically modified organisms (GMOs). It defines biosafety as ensuring safety in using, handling, and disposing of biological organisms. Risk assessment of GMOs involves characterizing the agent, identifying hazards, evaluating risks, and applying management strategies. The guidelines classify GMOs based on their history of safe use and specify containment levels and approvals required for field testing.
Biosafety aims to prevent large-scale biological harm to both the environment and human health. It involves regularly reviewing safety protocols in laboratories working with biological materials. Risks arise from the samples and equipment used, and can threaten both workers and the outside community if safety regulations are not followed. Proper risk assessment of pathogens considers factors like infectiousness, transmission methods, treatment options, and containment facilities available.
The document discusses basic principles of biosafety. It begins by defining biosafety as safety from exposure to infectious agents. It then discusses biosafety levels 1-4 which provide increasing levels of containment for biological hazards. It also discusses important biosafety concepts like standard microbiological practices, safety equipment, facility design and construction that help prevent exposure to biological hazards in research and clinical settings.
The document outlines India's biosafety guidelines for genetically engineered organisms (GEOs). It discusses the various committees that implement the guidelines: the Institutional Biosafety Committee regulates research, the Review Committee on Genetic Manipulation reviews high-risk research, and the Genetic Engineering Approval Committee approves large-scale use of GEOs. The guidelines establish containment levels and review processes to minimize risks from GEOs and ensure public health and environmental safety.
This document provides information on performing risk assessments for various types of biosafety work. It discusses risk assessments for microbiological work, animal biosafety, genetically modified plants, and genetically modified organisms. For each type of risk assessment, it identifies key factors to consider such as pathogenicity, routes of infection, survival in the environment, and availability of treatments. It emphasizes that risk assessments should be performed by those most familiar with the specific organisms, equipment, and facilities being used.
Biosafety is the application of safety precautions that reduce a Laboratory based risk of exposure to a potentially infectious material and limit contamination of the working and surrounding environment.
The primary principle of biosafety is “Containment”.
Containment
The action of keeping harmful things under control and within limits
Or
A series of safe methods for managing infectious bacteria in the laboratory.
Water Pollution and its control through biotechnologyRachana Tiwari
Water pollution occurs from both point and non-point sources and can be physical, chemical, or biological in nature. It affects plants and organisms in bodies of water. Biotechnological control of water pollution uses aerobic and anaerobic treatment processes. Aerobic processes use microorganisms like Pseudomonas and algae to break down pollutants, and occur in suspended growth systems like activated sludge or attached growth systems like trickling filters. Anaerobic processes use microbes like Peptococcus anaerobus and Escherichia coli to treat waste in the absence of oxygen in digesters.
The document provides an introduction to biosafety, explaining that it aims to reduce risk of exposure to infectious materials through proper safety precautions and procedures. It discusses the need for biosafety in laboratories processing infectious agents and around recombinant DNA to protect workers and the environment. The document also outlines different biosafety levels and associated practices, containment facilities, risk groups of pathogens, and considerations for risk assessments.
Petroleum Microbiology is a state-of-the-art presentation of the specific microbes that inhabit oil reservoirs, with an emphasis on the ecological significance of anaerobic microorganisms. An intriguing introduction to extremophilic microbes, the book considers the various beneficial and detrimental effects of bacteria and archaea indigenous to the oil field environment. Presenting fundamental and applied biological approaches, the book serves as an invaluable reference source for petroleum engineers, remediation professionals, and field researchers.
Hazardous Waste Disposal And Cleaning - Bio,Chemical and Nuclear Wastesmohammed ashique
This document discusses proper procedures for disposing of hazardous industrial waste, including biological, chemical, and radioactive materials. It outlines key principles such as segregating different waste types, using appropriate packaging and labeling, employing safety precautions during handling and transport, and utilizing approved disposal methods like incineration, chemical treatment, and secured landfills or deep well injection based on the waste characteristics. Proper hazardous waste disposal is important to protect both human and environmental health.
Bioleaching is a process that uses microorganisms like bacteria and fungi to extract metals from ores. It involves microbes transforming metal compounds into soluble forms that can then be recovered. Some key microbes used are Thiobacillus ferrooxidans and Thiobacillus thiooxidans, which produce acids that dissolve metals. Bioleaching is commercially done through methods like slope leaching, heap leaching, and in situ leaching. It provides a cost-effective way to extract low-grade ores and is more environmentally friendly than smelting. However, it is a slower process and requires careful control of temperature, pH, and other environmental factors.
Module 4 primary contaiment and other hazardEhealthMoHS
The document discusses primary containment and other biological hazards. It outlines a hierarchy of controls to prevent exposure to biological hazards, including engineering controls, administrative controls, and personal protective equipment (PPE). Primary containment equipment like biosafety cabinets (BSCs) and centrifuges contain hazards at the source. Secondary containment provides barriers around primary containment through facilities and room design. Tertiary containment establishes barriers beyond containment laboratories. PPE like gloves, gowns, and respirators are used to protect workers. Proper use and decontamination of equipment minimizes exposure risks from biological hazards in laboratories.
Bioremediation uses microorganisms, fungi, or plants to break down pollutants and return the environment to its natural state. Some techniques include using naturally occurring organisms, adding nutrients to stimulate growth, or genetically modifying organisms. Studies have shown that certain species of halophilic archaea in hypersaline coastal environments can degrade hydrocarbons from crude oil, with degradation increasing at higher salt concentrations, demonstrating the potential for natural bioremediation of oil spills in those environments.
This document discusses bioleaching, which uses microorganisms to dissolve metals from ores. The most common microorganisms used are Thiobacillus thiooxidants and Thiobacillus ferrooxidants. Bioleaching can occur directly via microbial contact with ores or indirectly by microbes producing leaching agents. Common applications include copper, uranium, gold and silver, and silica leaching. Bioleaching is used commercially in slope, heap, and in situ leaching with ores placed in piles or left in the ground and irrigated with microbes.
This document discusses biosafety and biosecurity in laboratories. It defines biosafety as the combination of practices and procedures used to prevent exposure to pathogens and their accidental release. This includes containment principles and technologies. Biosecurity refers to security measures to prevent theft or misuse of pathogens. The document outlines the history of biosafety guidelines and regulations. It emphasizes the importance of training, awareness, and proper equipment and practices for managing biohazard risks to laboratory personnel, the public, and environment.
This document discusses biosafety guidelines for recombinant DNA research. It defines biosafety as applying safety principles to potentially hazardous biological materials or organisms. Guidelines have been developed by organizations like the National Institutes of Health and Department of Biotechnology in India. There are four biosafety levels depending on the risk posed by the organisms and experiments, with increasing safety requirements at higher levels. Risk assessment involves evaluating characteristics of the organisms and modifications to determine the biosafety level needed. Risk management aims to minimize risks to human health and the environment through prevention measures and policies.
This document discusses biosafety principles for microbiology and biomedical laboratories. It defines biosafety and outlines key concepts like biohazards, biosafety levels, and the biohazard symbol. Biosafety aims to minimize health and environmental risks from hazardous biological materials through administrative controls, safety equipment, and facility design tailored to the risks involved. The document also notes emerging issues at the intersection of biosafety and biotechnology like genetically modified organisms, biosecurity, and bioethics.
This document discusses biosafety guidelines for laboratories working with genetically modified organisms (GMOs). It outlines different levels of biosafety containment from levels 1 to 4, with higher levels required for more dangerous pathogens. Physical and biological containment methods are described, including air filtration, sterilization lights, waste disposal procedures, and making organisms unable to survive outside the lab. Guidelines for safe practices in biosafety level 1 and 2 labs are provided. Several databases for finding biosafety information are also mentioned.
Biosafety refers to ensuring safety when working with biological organisms. This document discusses biosafety concepts and issues including containment levels, biosafety cabinets, and risk assessment. The four biosafety levels range from level 1 posing minimal risk to level 4 posing high individual risk without vaccines or treatments. Biosafety cabinets are used to protect workers and the environment, with class I protecting environment, class II protecting samples and environment, and class III providing maximum protection in BSL-4 labs. Risk assessment considers an organism's pathogenicity, virulence, proliferation ability, and transmission route. Guidelines for recombinant DNA research emphasize risk-based containment and avoiding unnecessary regulation.
This document provides an overview of biosafety, including definitions, background on genetically modified organisms (GMOs) and biosafety concerns. It discusses risk assessment and includes case studies on Starlink maize and Monsanto vs. Schmeiser. Guidelines, international agreements like the Cartagena Protocol, and biosafety regulation in India are also summarized. Key organizations involved in biosafety like ICGAB and mechanisms for implementing guidelines in India are outlined.
Bioremediation refers to the process of using microorganisms to remove the environmental pollutants i.e. the toxic wastes found in soil, water, air etc. The microbes serve as scavengers in bioremediation. The removal of organic wastes by microbes for environmental clean-up is the essence of bioremediation. The other names used (by some authors) for bioremediation are bio-treatment, bio-reclamation and bio-restoration.
Bioremediation of soil: A soil sample ((desert soil/soil with oil spills) ) was saturated with crude oil (17.3%, w/w) and aliquots were diluted to different extents with either pristine desert or petrol pump’s soils. Heaps of all samples were exposed to outdoor conditions through six months, and were repeatedly irrigated with water and mixed thoroughly. Quantitative determination of the residual oil in the samples revealed that oil-bioremediation in the undiluted heaps was nearly as equally effective as in the diluted ones. One month after starting the experiment. 53 to 63% of oil was removed. During the subsequent five months, 14 to 24% of the oil continued to be consumed by the microbes. The dynamics of the hydrocarbonoclastic bacterial communities in the heaps was monitored. The highest numbers of those organisms coordinated chronologically with the maximum oil-removal. Out of the identified bacterial species, those affiliated with the genera Nocardioides (especially N. deserti), Dietzia (especially D. papillomatosis), Microbacterium, Micrococcus, Arthrobacter, Pseudomonas, Cellulomonas, Gordonia and others were main contributors to the oil-consumption. Some species, e.g. D. papillomatosis showed the maximum tolerance compared with all the other studied isolates. It was concluded that even in oil-saturated soil, self-cleaning proceeds at a normal rate.
This document discusses bioremediation and phytoremediation. It defines bioremediation as using microorganisms, fungi or plants to return a contaminated environment to its original condition. Phytoremediation specifically uses green plants. Methods include using bacteria to decompose oil spills or degrade chlorinated hydrocarbons. Bioremediation works by microbes breaking down hazardous substances into less toxic forms. It has advantages like lower cost than traditional methods and preserving the natural environment. However, some chemicals are not readily biodegradable and factors like nutrients, moisture and temperature must be considered.
The document discusses biosafety levels (BSL) which are used to classify biological agents based on risk. There are four biosafety levels, with BSL-1 posing the lowest risk (ex. E. coli bacteria) and BSL-4 posing the highest risk (ex. Ebola virus). Each level has specific containment controls for laboratory practices, safety equipment, and facility construction required to safely work with the biological agents in that risk group. The summary outlines some of the key containment controls like personal protective equipment, biological safety cabinets, and facility access restrictions that distinguish the different biosafety levels.
This document summarizes bioremediation methods for oil spills. It discusses how bioremediation uses microorganisms to break down oil contaminants into less toxic substances. There are several techniques to enhance bioremediation, including adding nutrients, oxygen, or microbes. While bioremediation is less expensive and natural than alternative methods, it takes time to see results and depends on environmental conditions. The document concludes that bioremediation should be considered a useful oil spill treatment, especially for shoreline cleanups.
Microbial enhanced oil recovery is one of the EOR techniques where bacteria and their by-products are utilized for oil mobilization in a reservoir.
It is the process that increases oil recovery through inoculation of microorganisms in a reservoir, aiming that bacteria and their by-products cause some beneficial effects.
This document discusses barophiles, which are microorganisms that thrive under high hydrostatic pressure, such as in deep ocean environments or subsurface rocks. It classifies barophiles into three groups: barotolerant organisms that can survive higher pressures but grow best at normal atmospheric pressure, barophilic organisms that grow at pressures from 400-500 atm, and extreme barophiles that obligately grow at over 500 atm and do not grow at low pressures. Examples of barophiles found in the deepest parts of the ocean, such as the Mariana Trench, are provided. The document also explains how barophiles are able to regulate membrane fluidity and survive in high pressure environments.
The r-DNA Biosafety Guidelines of India classify research activities into three categories based on risk. Category I requires only intimation, Category II requires prior permission, and Category III requires review and approval before starting. The guidelines aim to regulate research safely and minimize accidental release of GMOs. Implementation occurs through four committees - RDAC provides regulatory oversight, IBSC monitors research, RCGM reviews risks and permissions, and GEAC approves large-scale use and environmental release. The guidelines establish containment levels and procedures to safely conduct r-DNA research and ensure biosafety.
deals with biosafety in medical labs. universal safety precautions included. Includes updated 8 categories and colour coding for BMW management. Being a budding microbiologist, kept it focused on microbiology lab
Biotechnology uses biological systems like microorganisms and their molecules to solve problems and make useful products. It involves two main tools - bioprocessing technology which uses whole living cells or their components like enzymes to manufacture products, and genetic engineering which modifies genes to change an organism's traits. Biotechnology has many applications like improving crops and animal health in agriculture, developing new medical tests and treatments, and aiding chemical and environmental industries.
Petroleum Microbiology is a state-of-the-art presentation of the specific microbes that inhabit oil reservoirs, with an emphasis on the ecological significance of anaerobic microorganisms. An intriguing introduction to extremophilic microbes, the book considers the various beneficial and detrimental effects of bacteria and archaea indigenous to the oil field environment. Presenting fundamental and applied biological approaches, the book serves as an invaluable reference source for petroleum engineers, remediation professionals, and field researchers.
Hazardous Waste Disposal And Cleaning - Bio,Chemical and Nuclear Wastesmohammed ashique
This document discusses proper procedures for disposing of hazardous industrial waste, including biological, chemical, and radioactive materials. It outlines key principles such as segregating different waste types, using appropriate packaging and labeling, employing safety precautions during handling and transport, and utilizing approved disposal methods like incineration, chemical treatment, and secured landfills or deep well injection based on the waste characteristics. Proper hazardous waste disposal is important to protect both human and environmental health.
Bioleaching is a process that uses microorganisms like bacteria and fungi to extract metals from ores. It involves microbes transforming metal compounds into soluble forms that can then be recovered. Some key microbes used are Thiobacillus ferrooxidans and Thiobacillus thiooxidans, which produce acids that dissolve metals. Bioleaching is commercially done through methods like slope leaching, heap leaching, and in situ leaching. It provides a cost-effective way to extract low-grade ores and is more environmentally friendly than smelting. However, it is a slower process and requires careful control of temperature, pH, and other environmental factors.
Module 4 primary contaiment and other hazardEhealthMoHS
The document discusses primary containment and other biological hazards. It outlines a hierarchy of controls to prevent exposure to biological hazards, including engineering controls, administrative controls, and personal protective equipment (PPE). Primary containment equipment like biosafety cabinets (BSCs) and centrifuges contain hazards at the source. Secondary containment provides barriers around primary containment through facilities and room design. Tertiary containment establishes barriers beyond containment laboratories. PPE like gloves, gowns, and respirators are used to protect workers. Proper use and decontamination of equipment minimizes exposure risks from biological hazards in laboratories.
Bioremediation uses microorganisms, fungi, or plants to break down pollutants and return the environment to its natural state. Some techniques include using naturally occurring organisms, adding nutrients to stimulate growth, or genetically modifying organisms. Studies have shown that certain species of halophilic archaea in hypersaline coastal environments can degrade hydrocarbons from crude oil, with degradation increasing at higher salt concentrations, demonstrating the potential for natural bioremediation of oil spills in those environments.
This document discusses bioleaching, which uses microorganisms to dissolve metals from ores. The most common microorganisms used are Thiobacillus thiooxidants and Thiobacillus ferrooxidants. Bioleaching can occur directly via microbial contact with ores or indirectly by microbes producing leaching agents. Common applications include copper, uranium, gold and silver, and silica leaching. Bioleaching is used commercially in slope, heap, and in situ leaching with ores placed in piles or left in the ground and irrigated with microbes.
This document discusses biosafety and biosecurity in laboratories. It defines biosafety as the combination of practices and procedures used to prevent exposure to pathogens and their accidental release. This includes containment principles and technologies. Biosecurity refers to security measures to prevent theft or misuse of pathogens. The document outlines the history of biosafety guidelines and regulations. It emphasizes the importance of training, awareness, and proper equipment and practices for managing biohazard risks to laboratory personnel, the public, and environment.
This document discusses biosafety guidelines for recombinant DNA research. It defines biosafety as applying safety principles to potentially hazardous biological materials or organisms. Guidelines have been developed by organizations like the National Institutes of Health and Department of Biotechnology in India. There are four biosafety levels depending on the risk posed by the organisms and experiments, with increasing safety requirements at higher levels. Risk assessment involves evaluating characteristics of the organisms and modifications to determine the biosafety level needed. Risk management aims to minimize risks to human health and the environment through prevention measures and policies.
This document discusses biosafety principles for microbiology and biomedical laboratories. It defines biosafety and outlines key concepts like biohazards, biosafety levels, and the biohazard symbol. Biosafety aims to minimize health and environmental risks from hazardous biological materials through administrative controls, safety equipment, and facility design tailored to the risks involved. The document also notes emerging issues at the intersection of biosafety and biotechnology like genetically modified organisms, biosecurity, and bioethics.
This document discusses biosafety guidelines for laboratories working with genetically modified organisms (GMOs). It outlines different levels of biosafety containment from levels 1 to 4, with higher levels required for more dangerous pathogens. Physical and biological containment methods are described, including air filtration, sterilization lights, waste disposal procedures, and making organisms unable to survive outside the lab. Guidelines for safe practices in biosafety level 1 and 2 labs are provided. Several databases for finding biosafety information are also mentioned.
Biosafety refers to ensuring safety when working with biological organisms. This document discusses biosafety concepts and issues including containment levels, biosafety cabinets, and risk assessment. The four biosafety levels range from level 1 posing minimal risk to level 4 posing high individual risk without vaccines or treatments. Biosafety cabinets are used to protect workers and the environment, with class I protecting environment, class II protecting samples and environment, and class III providing maximum protection in BSL-4 labs. Risk assessment considers an organism's pathogenicity, virulence, proliferation ability, and transmission route. Guidelines for recombinant DNA research emphasize risk-based containment and avoiding unnecessary regulation.
This document provides an overview of biosafety, including definitions, background on genetically modified organisms (GMOs) and biosafety concerns. It discusses risk assessment and includes case studies on Starlink maize and Monsanto vs. Schmeiser. Guidelines, international agreements like the Cartagena Protocol, and biosafety regulation in India are also summarized. Key organizations involved in biosafety like ICGAB and mechanisms for implementing guidelines in India are outlined.
Bioremediation refers to the process of using microorganisms to remove the environmental pollutants i.e. the toxic wastes found in soil, water, air etc. The microbes serve as scavengers in bioremediation. The removal of organic wastes by microbes for environmental clean-up is the essence of bioremediation. The other names used (by some authors) for bioremediation are bio-treatment, bio-reclamation and bio-restoration.
Bioremediation of soil: A soil sample ((desert soil/soil with oil spills) ) was saturated with crude oil (17.3%, w/w) and aliquots were diluted to different extents with either pristine desert or petrol pump’s soils. Heaps of all samples were exposed to outdoor conditions through six months, and were repeatedly irrigated with water and mixed thoroughly. Quantitative determination of the residual oil in the samples revealed that oil-bioremediation in the undiluted heaps was nearly as equally effective as in the diluted ones. One month after starting the experiment. 53 to 63% of oil was removed. During the subsequent five months, 14 to 24% of the oil continued to be consumed by the microbes. The dynamics of the hydrocarbonoclastic bacterial communities in the heaps was monitored. The highest numbers of those organisms coordinated chronologically with the maximum oil-removal. Out of the identified bacterial species, those affiliated with the genera Nocardioides (especially N. deserti), Dietzia (especially D. papillomatosis), Microbacterium, Micrococcus, Arthrobacter, Pseudomonas, Cellulomonas, Gordonia and others were main contributors to the oil-consumption. Some species, e.g. D. papillomatosis showed the maximum tolerance compared with all the other studied isolates. It was concluded that even in oil-saturated soil, self-cleaning proceeds at a normal rate.
This document discusses bioremediation and phytoremediation. It defines bioremediation as using microorganisms, fungi or plants to return a contaminated environment to its original condition. Phytoremediation specifically uses green plants. Methods include using bacteria to decompose oil spills or degrade chlorinated hydrocarbons. Bioremediation works by microbes breaking down hazardous substances into less toxic forms. It has advantages like lower cost than traditional methods and preserving the natural environment. However, some chemicals are not readily biodegradable and factors like nutrients, moisture and temperature must be considered.
The document discusses biosafety levels (BSL) which are used to classify biological agents based on risk. There are four biosafety levels, with BSL-1 posing the lowest risk (ex. E. coli bacteria) and BSL-4 posing the highest risk (ex. Ebola virus). Each level has specific containment controls for laboratory practices, safety equipment, and facility construction required to safely work with the biological agents in that risk group. The summary outlines some of the key containment controls like personal protective equipment, biological safety cabinets, and facility access restrictions that distinguish the different biosafety levels.
This document summarizes bioremediation methods for oil spills. It discusses how bioremediation uses microorganisms to break down oil contaminants into less toxic substances. There are several techniques to enhance bioremediation, including adding nutrients, oxygen, or microbes. While bioremediation is less expensive and natural than alternative methods, it takes time to see results and depends on environmental conditions. The document concludes that bioremediation should be considered a useful oil spill treatment, especially for shoreline cleanups.
Microbial enhanced oil recovery is one of the EOR techniques where bacteria and their by-products are utilized for oil mobilization in a reservoir.
It is the process that increases oil recovery through inoculation of microorganisms in a reservoir, aiming that bacteria and their by-products cause some beneficial effects.
This document discusses barophiles, which are microorganisms that thrive under high hydrostatic pressure, such as in deep ocean environments or subsurface rocks. It classifies barophiles into three groups: barotolerant organisms that can survive higher pressures but grow best at normal atmospheric pressure, barophilic organisms that grow at pressures from 400-500 atm, and extreme barophiles that obligately grow at over 500 atm and do not grow at low pressures. Examples of barophiles found in the deepest parts of the ocean, such as the Mariana Trench, are provided. The document also explains how barophiles are able to regulate membrane fluidity and survive in high pressure environments.
The r-DNA Biosafety Guidelines of India classify research activities into three categories based on risk. Category I requires only intimation, Category II requires prior permission, and Category III requires review and approval before starting. The guidelines aim to regulate research safely and minimize accidental release of GMOs. Implementation occurs through four committees - RDAC provides regulatory oversight, IBSC monitors research, RCGM reviews risks and permissions, and GEAC approves large-scale use and environmental release. The guidelines establish containment levels and procedures to safely conduct r-DNA research and ensure biosafety.
deals with biosafety in medical labs. universal safety precautions included. Includes updated 8 categories and colour coding for BMW management. Being a budding microbiologist, kept it focused on microbiology lab
Biotechnology uses biological systems like microorganisms and their molecules to solve problems and make useful products. It involves two main tools - bioprocessing technology which uses whole living cells or their components like enzymes to manufacture products, and genetic engineering which modifies genes to change an organism's traits. Biotechnology has many applications like improving crops and animal health in agriculture, developing new medical tests and treatments, and aiding chemical and environmental industries.
The document discusses occupational health and safety hazards in the workplace. It identifies several types of hazards: physical, chemical, biological, psychosocial, and ergonomic. It provides examples of hazards for each type. The document also discusses steps to manage hazards through identification, assessment, control, evaluation, and review. International and Indian standards for occupational health and safety management systems are outlined as well. Maintaining a safe work environment can increase productivity by reducing costs from injuries and improving employee retention and morale.
- The document discusses biosafety regulations and policies across Asian countries. It notes the diversity in the region and importance of agriculture.
- Many countries have approved GM crops for cultivation or import and have national biosafety frameworks in place. Key countries like China, India, Pakistan have seen success with Bt cotton.
- Risk assessment and monitoring are important aspects of biosafety regulations. Approaches differ across countries but aim to ensure safety and transparency. Regional cooperation can help strengthen regulatory capacity.
Biological hazards refer to biological substances that pose a threat to human health. These hazards include bacteria, viruses, and fungi and can enter the body through inhalation, absorption, ingestion, or injection. They are spread through human-to-human contact or contaminated food or water. Exposure is controlled through engineering controls, administrative controls like training and hygiene practices, and personal protective equipment. The health and safety representative educates workers and ensures proper controls are in place. Ebola virus is a severe and often fatal disease spread through contact with body fluids that has varied fatality rates.
The document discusses biological hazards, including:
1. Types of biological hazards such as bacteria, viruses, and fungi and how they can enter the body through inhalation, absorption, ingestion, or injection.
2. How biological hazards are spread from person to person and examples of diseases caused by different types of bacteria and viruses.
3. There are four levels of biological hazards ranging from relatively harmless microorganisms to those that can cause death, and appropriate personal protective equipment and disposal methods vary depending on the level.
This document discusses biosafety levels from BSL-1 to BSL-4. It provides a brief history of biosafety, noting the first biosafety conference in 1955 and later CDC specification of four biosafety levels. Each biosafety level is defined based on the pathogen risk and safety precautions required. BSL-1 involves well-characterized agents and basic precautions. BSL-2 adds further controls for agents associated with human disease. BSL-3 is for dangerous indigenous agents and requires additional engineering and personal protective controls. The highest level, BSL-4, applies to dangerous exotic agents and requires the maximum containment measures.
This training manual provides guidance on biorisk management for laboratory workers, field personnel, and research students working in veterinary laboratories in Pakistan. Biorisk management is important to control safety and security risks associated with handling biological materials and prevent unintentional exposure and accidental release. The manual covers terminology related to biorisk management, the scope and importance of establishing biorisk management systems in facilities, and the objectives of providing biorisk management training to raise awareness of biosafety and biosecurity practices.
The document discusses biosafety concepts and practices. It begins by defining biosafety as safety from exposure to infectious agents. It then discusses biosafety issues in various disciplines like agriculture, medicine, and chemistry. The rest of the document outlines biosafety concepts, levels, and practices based on guidance from the Biosafety in Microbiological and Biomedical Laboratories (BMBL) including standard microbiological practices, safety equipment, and facility design requirements for different biosafety levels from BSL-1 to BSL-4. It also discusses risk assessment and containment practices for working with various biological hazards.
Safety considerations and guidelines veterinary microbiology laboratoryRavi Kant Agrawal
This document provides guidelines on biosafety and biosecurity for veterinary microbiology laboratories. It defines key terms like biohazard, biosafety, risk assessment, biosecurity, and the biohazard symbol. It discusses the chain of infection and approaches to reduce risk of exposure like risk assessment, personal protective equipment, immunizations, and surveillance. The document also compares and contrasts biosecurity and biosafety. It provides guidance on developing a biosecurity program and addressing breaches. It discusses challenges of preventing interference while ensuring legitimate access.
Biosafety is the prevention of large-scale loss of biological integrity, focusing both on ecology and human health. These prevention mechanisms include conduction of regular reviews of the biosafety in laboratory settings, as well as strict guidelines to follow. Biosafety also means safety from exposure to infectious agents.
Necessity
In order to avoid infection/biohazard to the laboratory personnel & the environment, biosafety levels are very important.
safety data sheet, an introduction to cell culture, safety equipment, safe laboratory practices, ascetic techniques, sterile work area, good personal hygiene, sterile reagents and media, sterile handling, planning of cell culture labs.
Biosaftey means the needs to protect human and animal health along with the environment from the possible adverse effects of the products of modern biotechnology. Biosafety defines the containment conditions under which infectious agents can be safely manipulated. Biosafety word is used to reduce and eliminate the potential risk regulating from the modern biotechnology and its products.
This document discusses biosafety and biosecurity. It defines biosafety as containment principles and practices to prevent unintentional exposure to pathogens. This includes laboratory worker protection, containment design, guidelines and safe practices. It describes World Health Organization (WHO) risk groups 1-4 which categorize agents based on factors like pathogenicity. It also outlines biosafety levels 1-4 which are determined by composite factors including containment and procedures. The document emphasizes principles like risk assessment, training, and emergency response planning. It defines biosecurity as measures to prevent theft or intentional release of pathogens. Developing strong biosafety and biosecurity programs requires involvement from various stakeholders.
This document outlines regulations for safety in biological plants regarding biohazards and biosecurity. It defines key terms like biohazard, biosecurity, and biosafety. It discusses safety basics in biological plants including biosafety in the lab and personal biosafety. It covers national regulations in India for biological safety as well as international regulations. Guidelines are provided for risk assessment, pathogen assessment, biosafety levels, good manufacturing practices, and the roles of various containment barriers.
This document discusses biosafety and biosecurity in laboratories. It defines laboratory biosafety as containment practices to prevent exposure to pathogens, and biosecurity as protecting valuable biological materials. It also defines bioterrorism, biohazards, risk, and biomedical waste. The document outlines objectives of biological safety including protecting workers, maintaining a safe work environment, and preventing spread of contaminants. It lists 12 rules of biosafety such as proper training, handling all biological material as potentially infectious, using appropriate biosafety levels, and reporting any accidents.
The document discusses biosafety and waste management in histopathology labs. It outlines biosafety level guidelines which classify medical labs and microorganisms into four levels based on architectural features, ventilation, and safety equipment. It describes the basic lab and containment lab designs and safety practices like limited access, decontamination, and personal protective equipment. It also categorizes pathological waste, discusses principles of effective waste management including segregation, collection, storage, transportation, and treatment, and provides recommendations to improve biosafety standards.
The document discusses biosafety principles and practices for protecting laboratory personnel and the environment from exposure to potentially infectious biological materials and agents, including determining the risks posed by different agents, assessing those risks, and establishing biosafety levels and containment procedures appropriate to the level of risk.
The document discusses biosafety, which aims to reduce risks from infectious agents and genetically modified organisms. Biosafety involves containment conditions and preventing exposure of laboratory workers, the public, and environment. It defines four biosafety levels based on risk groups of biological agents, with higher levels requiring more stringent containment and personal protective equipment. Risk assessment involves identifying and analyzing hazards to determine potential adverse effects of biotechnology research.
Workplace safety is an important aspect to protect personnel against injury or serious accident.In case of animal cell culture safety takes a front seat due to nature of work i.e. handling of human cells and tissues, viruses with high potential to cause infections to humans and other adventitious micro organisms. This presentation presents various methods of safety to protect lab personnel from infectious biological agents.
Types and strategies for decomposing of Biohazard Waste.pptxNIBGE-College
This presentation cover all the related data about principles and practices of biosafety. Awareness on types of biosafety and how can dispose of the biological waste.
Biohazards,Institutional Biosafety Committees and Cartagena Protocol:
Biohazards:
Biological hazards also known as biohazards, refer to biological substances that pose a threat to the health of living organisms, especially that of humans. For example: Viruses, bacteria ,fungi etc.
These hazards can be encountered anywhere in the environment. The biohazard symbol was developed in 1966 by Charles Baldwin, an environmental health engineer.
Types of Biological Hazards: Biological hazards can be put into different categories:
Bacteria: microscopic organisms that live in soil,water or the bodies of plants and animals and are characterized by lack of distinct nucleus and the inability to photosynthesize. Examples are E.coli, TB and Tetanus.
Viruses: These are a group of pathogens that consist mostly of nucleic acids and that lack cellular structure. Viruses are totally dependent on their hosts for replication. Examples: common cold, influenza, measles, SARS, Hantavirus and rabies.
Fungi: Major group of lower plants that lack chlorophyll and live on dead or other living organisms. Examples: mould,rust, mildew,smut,yeast and mushrooms.
Biohazard Classification: Conventional Agents
Recombinant DNA
Tissue Culture
Animal work
Anatomical Specimens
Unconventional Agents
What is Biosafety ? Biosafety is the application of safety precautions that reduce a laboratorians risk of exposure to a potentially infectious material and limit contamination of the work environment and ultimately the community (CDC).
Achieved through;
Administrative controls
Engineering controls
Personal protective equipment
Practices and procedures
Institutional Biosafety Committee (IBC): Under section 5 (1) of regulations
All organisations involved in research and development that deals with modern biotechnology shall establish an IBC.
IBC is a formal expert committee of an organisation undertaking modern biotechnology research and development which involves use of any LMO/rDNA materials.
IBCs are registered with the National Biosafety Board (NBB).
Its function is to monitor and ensure compliance to the biosafety act 2007 at the institutional level and safe handling of modern biotechnology activities.
IBC Members: Head of the organization or his designate as the chairperson.
Three or more scientists engaged in rDNA work or molecular biology with at least one outside expert in the relevant discipline.
A member with medical qualifications - Biosafety officer.
A nominee of DBT.
Cartagena Protocol: History: CBD opened for signature in 1992 and entered into force on 29 Dec 1993.
Cartagena Bio Safety Protocol (CBSP) negotiated from 1996-2000; entered into force in 11 Sept. 2003; over 170 Party Members; an international treaty.
This is a complementary agreement to the United Nations Convention on Biological Diversity (CBD).
Total parties to the cartagena protocol as of June 2021 are 173.
Objectives: The cartagena protocol on Biodiversity seeks to protect biodiversity from the potential risk
A university researcher died from an infection caused by bacteria he was studying. The bacteria, Yersinia pestis, causes plague. An autopsy found the bacteria in his body but no obvious cause of death. More tests are planned as no other illnesses have been reported. Biosafety aims to reduce risks from exposure to infectious agents through standard practices, containment equipment, facility design and other principles outlined in publications like the Biosafety in Microbiological and Biomedical Laboratories manual. Risk assessments consider the organism, procedures, containment and other factors to determine appropriate biosafety levels and practices.
This document discusses biosafety and guidelines for working with biological materials and genetically modified organisms. It covers principles of biosafety including identifying risks, assessing risks, determining acceptable risk, and managing biohazardous waste. The document also discusses biosafety levels 1 through 4 and provides categories for regulating recombinant DNA research activities in India based on risk.
This document discusses biosafety and safety considerations in biotechnology. It defines biosafety as safety precautions that reduce risk of exposure to infectious materials. Hazards are things that can cause harm, while risk defines the chance of harm occurring. Safety aspects discussed include pathogenicity, toxicity, disposal of waste, and contamination. The document also covers classification of microorganisms based on pathogenicity, recommendations on safety, and issues of biowarfare and bioterrorism.
Group 5 biohazard management and biorisk mitigationIqraAkram53
This document summarizes biohazard and biorisk assessment for biological, chemical, and animal work. It discusses key topics like the definition of a biohazard, the purpose of biorisk assessment to ensure safe handling of biological materials, and the importance of risk assessment in scientific work to identify hazards and mitigate risks. Specific considerations are outlined for biological work, chemical work, and animal work. Steps in the risk assessment process and the necessity of risk assessment are also covered. The document emphasizes personnel training and continuous education to adapt to biosafety challenges. It also discusses environmental safety procedures and communication strategies for emergencies.
This document defines biomedical waste and provides guidelines for its proper handling and disposal at the University of Ottawa. It outlines roles and responsibilities, defines key terms, and provides detailed procedures for waste segregation, containment, labelling, treatment, handling, transportation, storage, collection, and disposal. Biomedical waste must be properly contained and labelled according to type before undergoing required treatment such as autoclaving or chemical disinfection, and ultimately collection by the Office of Risk Management for off-site disposal. Adhering to these guidelines ensures biomedical waste is safely managed in compliance with regulations.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptxMAGOTI ERNEST
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
The debris of the ‘last major merger’ is dynamically youngSérgio Sacani
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
hematic appreciation test is a psychological assessment tool used to measure an individual's appreciation and understanding of specific themes or topics. This test helps to evaluate an individual's ability to connect different ideas and concepts within a given theme, as well as their overall comprehension and interpretation skills. The results of the test can provide valuable insights into an individual's cognitive abilities, creativity, and critical thinking skills
Phenomics assisted breeding in crop improvementIshaGoswami9
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
The binding of cosmological structures by massless topological defectsSérgio Sacani
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
ESPP presentation to EU Waste Water Network, 4th June 2024 “EU policies driving nutrient removal and recycling
and the revised UWWTD (Urban Waste Water Treatment Directive)”
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...Sérgio Sacani
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
ESR spectroscopy in liquid food and beverages.pptxPRIYANKA PATEL
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
2. Contents:
1. Introduction
2. History
3. Background
4. Purpose
5. Basic Principles
6. Biological Waste & Its Disposal
7. Risk Groups
8. Bio-Safety Levels
9. Risk Assessment
10.Conclusion
3. Abstract
These guidelines for bio-safety laboratory
competency outline the essential skills, knowledge,
and abilities required for working with biologic
agents at the four bio-safety levels (BSLs) (levels 1,
2, 3, and 4). This article comprises all the basic
guidelines necessary to carry out any type of
research being carried out on biological organisms
carefully and without harming anyone i.e. the
researcher, workers and co-workers and most
importantly our environment and also it carries
guidelines to handle bio-hazardous materials and
dispose them off according to the protocol.
For a person with no scientific background bio-hazardous
symbols have also been discussed so
that when they see those symbols they would be
able to protect themselves accordingly.
In the end a conclusion has been given which
consists the essence of the discussion of the whole
research paper.
4. 1. Introduction:
Bio-safety is the prevention of large
scale loss of biological integrity, focusing both on
ecology and human health. These prevention
mechanisms include conduction of regular reviews
of the bio-safety in laboratory settings, as well as
strict guidelines to follow. Bio-safety is used to
protect us from harmful incidents. High security
facilities are necessary when working
with Synthetic Biology as there are possibilities of
bioterrorism acts or release of harmful chemicals
and or organisms into the environment. A
complete understanding of experimental risks
associated with synthetic biology is helping to
enforce the knowledge and effectiveness of bio-safety.
1
Despite a greater awareness of bio-safety
and bio-containment practices, handling infectious
microorganisms and other organisms remains a
source of infection, and even mortality, among
laboratory workers. Incidents of secondary
transmission of disease to the public at large,
which may be due to possible contamination of the
environment or personnel, are also occurring.
Laboratory workers can minimize the risks
associated with work involving these infectious
agents through the application of appropriate bio-safety
and containment principles and practices.
Bio-safety laboratories must ensure
adequate safety conditions to avoid potential
hazards associated with the handling of biologic
materials, the manipulation of genomes, the
creation of synthetic organisms, and the spread of
multidrug-resistant bacteria, and threats of biologic
terrorism. These guidelines define the essential
competencies needed by laboratory personnel to
5. work safely with biologic materials and other
hazards that might be found in a biologic
laboratory (e.g. those related to research animals,
chemicals, radiologic materials, and the physical
environment).
A successful laboratory safety program
encompasses a continuous process of hazard
recognition, risk assessment, and hazard
mitigation. The risk for exposures, laboratory
acquired infections, and the unintended release of
research or clinical materials to the environment
should ultimately be reduced by ensuring the
competency of laboratories at all levels.
Based on this above discussion bio-safety
can be defined as “procedures or measures
designed to protect the population against harmful
biological or biochemical substances”.2
2. History:
On 18 April 1955 the first biological safety
conference took place at Camp Detrick and
involved members of the military representing
Camp Detrick, Pine Bluff Arsenal, Arkansas (PBA),
and Dug way Proving Grounds, Utah (DPG). In that
conference role of Safety in the Biological Warfare,
chemical, radiological and industrial safety issues
were discussed. Later in the US, the Centre for
Disease Control (CDC) specified 4 different levels of
bio-containment which ranges from bio-safety level
1 to bio-safety level 4. 3 4
3. Background:
The Laboratory bio-safety guidelines were
initially developed to guide government, industry,
university, hospital, and other public health and
microbiological laboratories in their development
6. of bio-safety policies and programs.
The Guidelines also serve as a technical document
providing information and recommendations on
the design, construction and commissioning of
containment facilities.5 Several other
circumstances led to the development of bio-safety
competencies for practicing laboratorians. In 2006,
PAHPA called for the assessment, development,
delivery, and evaluation of competency-based
training for bio-safety in high containment
laboratories. In 2008, CDC convened the Blue
Ribbon Panel for issues of Clinical Laboratory Safety
to address incidence of laboratory-acquired
infection. Also in 2008, a Trans-Federal Task Force
was convened for federal agencies with
laboratories to address bio-safety and bio-security
in working with agents that pose a significant
public health threat, whether they arise from
nature, accidental exposure, or deliberate terrorist
attacks. These efforts underscored the need to
develop competency guidelines for laboratory bio-safety.
4. Purpose:
The primary purpose of these guidelines
is to establish the behaviors and knowledge that
laboratory workers at all levels should have to work
safely with biologic materials. Other key issues are:
the need for a well-designed workspace,
knowledge of specific biologic agents and toxins,
quality laboratory management practices, and an
overall safety culture.
5. Basic Principles:
No regulation or guideline can ensure
safe practices. Individual and organizational
attitudes regarding safety will influence all aspects
7. of safe practice, including willingness to report
concerns, response to incidents, and
communication of risk. Each organization should
strive to develop a culture of safety that is open
and nonpunitive, encourages questions, and is
willing to be self-critical. Persons and organizations
must be committed to safety, be aware of risks,
behave in ways that enhance safety, and be
adaptable. Scientists understand that practices
should be refined as observations are made,
hypotheses tested, findings published, and
technical progress achieved. The same holds true
for safety in the laboratory, which should evolve as
experience is gained and as laboratory activities
change. As laboratorians gain more knowledge
over time concerning how to recognize and control
hazards, the level of risk that is considered
acceptable should become smaller, with the goal of
moving continuously to eliminate or reduce risk to
the lowest reasonably achievable level.
Laboratorians have both the responsibility to
report concerns to management and the right to
express concerns without fear of reprisal. Similarly,
management has the responsibility to address
concerns raised from any direction. A continuous
process of hazard recognition, risk assessment, and
hazard mitigation practices ensures that
management and laboratory workers alike are
aware of the issues and work together to maintain
the highest standard of safety.
6. Bio-Hazardous Waste & Its Disposal:
Bio-hazardous waste:-
Bio-hazardous waste is defined as materials
containing:
Infectious agents (to human, plants, animals)
8. Biological toxins
Materials derived from humans and primates
(blood, body fluids, tissues)
Human and primate cell lines (including
recombinant)
Recombinant animal cell lines
Recombinant microorganisms
Transgenic animals (vertebrate and
invertebrate)
Materials derived from transgenic animals
(body fluids, tissues)
Transgenic plants
Recombinant materials such as plasmids,
DNA/RNA, synthetic DNA
Disposal Of Bio-Hazardous Waste:-
Liquid Waste:
Bio-hazardous liquid wastes are liquids
containing bio-hazardous waste.
Disposal Method: Decontaminate by treating with
an appropriate disinfectant. The amount of contact
time will depend on the chemical used and the
material decontaminated. For specific procedures,
refer to your approved protocol or contact EHS.
Solid Waste:
Bio-hazardous solid wastes are solids that
contain bio-hazardous materials or lab waste that
has come in contact with bio-hazardous materials.
These include:
Culture media
Personal Protective Equipment (contaminated)
Plastic ware including pipette tips
9. Transgenic plants including soil
Disposal Methods: Place material in an autoclave
bag, close bag loosely; attach a strip of autoclave
tape and autoclave. Apply “treated” label and place
in black garbage bag for disposal in trash. Record
treatment on autoclave waste treatment record
form.
Autoclave bag
Autoclave bag with “treated” label attached.
Treated bag placed in black trash bag for disposal.
Or;
Place in biohazard waste container and contact EHS
for pickup.
10. Sharps: Dispose into sharps container
Glassware: Decontaminate for re-use or dispose in
sharps container. Do not use glass trash boxes for
glassware contaminated with biological materials.
Transgenic Animals and Materials:
Transgenic animals and materials
includes animals (vertebrate and invertebrate) and
materials (tissues and infected bedding) from
transgenic animals.
Transgenic insects:
Freeze, then autoclave or place in
biohazard container
Transgenic animal carcasses/tissues:
Place in 2X biohazard bags and place in
freezer
Animal bedding from animals shedding
pathogens:
Place in biohazard waste container.
Disposal Method: Place in appropriate container.
Request EHS pickup.
11. Non-transgenic Animals/Tissues:
Non-transgenic animals or tissues
include animal carcasses/tissues not infected with
infectious agents.
Disposal Method: Place in double bags and place
material in freezer and request EHS pickup.
Used Animal Bedding:
Used animal bedding includes bedding
from animals that is free of pathogens or biological
toxins
Disposal Method: Can be disposed as conventional
trash. Containers should be secured.6
7. Risk Groups:
Classification of organisms according to
risk group has traditionally been used to categorize
the relative hazards of infective organisms. The
factors used to determine which risk group an
organism falls into is based upon the particular
characteristics of the organism, such as
pathogenicity
infectious dose
mode of transmission
host range
availability of effective preventive measures
availability of effective treatment
These classifications presume ordinary
circumstances in the research laboratory or growth
in small volumes for diagnostic and experimental
purposes. Four levels of risk have been defined as
follows.
Risk Group 1 (low individual and community risk):
Any biological agent that is unlikely to cause
disease in healthy workers or animals.
12. Risk Group 2 (moderate individual risk, low
community risk):
Any pathogen that can cause human
disease but, under normal circumstances, is
unlikely to be a serious hazard to laboratory
workers, the community, livestock or the
environment. Laboratory exposures rarely cause
infection leading to serious disease; effective
treatment and preventive measures are available,
and the risk of spread is limited.
Risk Group 3 (high individual risk, low community
risk):
Any pathogen that usually causes serious
human disease or can result in serious economic
consequences but does not ordinarily spread by
casual contact from one individual to another, or
that causes diseases treatable by antimicrobial or
anti-parasitic agents.
Risk Group 4 (high individual risk, high community
risk):
Any pathogen that usually produces very
serious human disease, often untreatable, and may
be readily transmitted from one individual to
another, or from animal to human or vice-versa,
directly or indirectly, or by casual contact.7
8. Bio-Safety Levels:
There are 4 types of bio-safety levels
according to the risk factors involved depending on
the nature of pathogen being handled.
13. Bio-Safety Level 1 (BSL 1):
This applies to the basic
laboratory that handles agents requiring bio-safety
level 1. BSL 1 requires no special design features
beyond those suitable for a well-designed and
functional laboratory. Biological safety cabinets
(BSCs) are not required. Work may be done on an
open bench top, and containment is achieved
through the use of practices normally employed in
a basic microbiology laboratory.
Bio-Safety Level 2 (BSL 2):
This applies to the
laboratory that handles agents requiring bio-safety
level 2. The primary exposure hazards associated
with organisms requiring BSL 2 are through the
ingestion, inoculation and mucous membrane
route. Agents requiring BSL 2 facilities are not
generally transmitted by airborne routes, but care
must be taken to avoid the generation of aerosols
(aerosols can settle on bench tops and become an
ingestion hazard through contamination of the
hands) or splashes. Primary containment devices
such as BSCs and centrifuges with sealed rotors or
safety cups are to be used as well as appropriate
personal protective equipment (i.e., gloves,
laboratory coats, protective eyewear). As well,
environmental contamination must be minimized
by the use of hand washing sinks and
decontamination facilities (autoclaves).
Bio-Safety Level 3 (BSL 3):
This applies to the
laboratory that handles agents requiring bio-safety
level 3. These agents may be transmitted by the
airborne route, often have a low infectious dose to
14. produce effects and can cause serious or life-threatening
disease. BSL3 emphasizes additional
primary and secondary barriers to minimize the
release of infectious organisms into the immediate
laboratory and the environment. Additional
features to prevent transmission of BSL3 organisms
are appropriate respiratory protection, HEPA
filtration of exhausted laboratory air and strictly
controlled laboratory access.
Bio-Safety Level 4 (BSL 4):
This is the maximum
containment available and is suitable for facilities
manipulating agents requiring bio-safety level 4.
These agents have the potential for aerosol
transmission, often have a low infectious dose and
produce very serious and often fatal disease; there
is generally no treatment or vaccine available. This
level of containment represents an isolated unit,
functionally and, when necessary, structurally
independent of other areas. BSL 4 emphasizes
maximum containment of the infectious agent by
complete sealing of the facility perimeter with
confirmation by pressure decay testing; isolation of
the researcher from the pathogen by his or her
containment in a positive pressure suit or
containment of the pathogen in a Class III BSC line;
and decontamination of air and other effluents
produced in the facility.
9. Risk Assessment:
Risk assessment is a
critical step in the selection of an appropriate bio-safety
level for the microbiological work to be
carried out. A detailed local risk assessment should
be conducted to determine whether work requires
containment level 1, 2, 3 or 4 facilities and
operational practices. Individuals with varying
15. expertise and responsibilities should be included in
the risk assessment process and can include,
among others, the facility director, laboratory
supervisor, principal investigator, senior
microbiologist, bio-safety officer and bio-safety
committee.
Available information can be used as a starting
point to assist in the identification of risk factors,
including the recommended Risk Group of the
organism. In addition to the Risk Group
classifications, which are based on the risk factors
inherent to the organism, the following factors
associated with the laboratory operation should
also be examined:
potential for aerosol generation
quantity
concentration
agent stability in the environment (inherent
biological decay rate)
type of work proposed (e.g., in vitro , in vivo ,
aerosol challenge studies)
use of recombinant organisms (e.g., gene
coding for virulence factors or toxins; host
range alteration; oncogenicity; replication
capacity; capability to revert to wild type)
10. Conclusion:
These guidelines outline the essential
expectations for behaviors and knowledge of
laboratory workers necessary to work safely with
biologic materials at all levels of the profession in
the life sciences. The development of these
guidelines is a first step toward defining
comprehensive safety competencies in biologic
laboratories. These guidelines reflect a range of
past experiences and will be reviewed periodically
and refined as additional experience is gained. The
guidelines can be used as a resource to develop
16. educational goals, training standards, safety
assessments, professional development, and
certification.
Every organization using these competencies
should regularly review and improve its practices
and documents with an eye toward continual
reduction of the risks involved in working with
biologic and other hazardous laboratory materials.
Training is not limited to the initial instruction
received at the start of a laboratory worker’s
employment but is continuous and refreshed
periodically. Some professions or organizations
that were contributors to these guidelines,
including AALAS and the Council of State and
Territorial Epidemiologists, also have addressed
biologic safety practices. 8
1 http://en.wikipedia.org/wiki/Biosafety
2 https://www.google.com.pk/?gws_rd=cr&ei=y2PcU5rOG6mh0QX4s4CQBg#q=define+biosecurity
3 http://www.slideshare.net/neharachankar/neha-biosafety-levels-ppt
4 http://fas.org/pubs/pir/2011fall/2011fall-bioagents.pdf
5 http://www.phac-aspc.gc.ca/publicat/lbg-ldmbl -04/ch1-eng.php
6 http://www.utexas.edu/safety/ehs/biosafety/waste_guidelines.html
7 http://www.phac-aspc.gc.ca/publicat/lbg-ldmbl -04/ch2-eng.php
8 https://www.aaalac.org/accreditation/RefResources/guide_for_biosaf_comp.pdf