The document discusses the role of microorganisms in industrial biotechnology, environmental remediation, and nutrient cycling. It describes how microorganisms are found virtually everywhere and play critical roles in biodegradation and the carbon, nitrogen, sulfur, and phosphorus cycles. The document also explains that microorganisms require nutrients, carbon sources, and electron acceptors like oxygen to grow and carry out biodegradation reactions.
Biotechnology can be used to help clean up the environment through various methods. These include using microorganisms to break down waste at landfills and during composting. A process called bioremediation uses naturally occurring microbes to break down pollutants. Other methods involve using biosensors to detect pollutants and genetically engineering bacteria to eat oil spills. Biotechnology techniques can also be applied to treating industrial waste, removing toxins from mining operations, and controlling pests and weeds in a more sustainable way.
This document discusses the application of molecular biotechnology in environmental protection, including synthetic biology, bio-degradation studies, and case studies. It covers using the moss Physcomitrella patens as a model organism for biotechnology due to its fast life cycle and high efficiency of gene targeting. Transformation techniques are discussed for inserting genes into P. patens and other organisms like E. coli and yeast. Bio-degradation of estrogens from wastewater is also examined along with challenges in wastewater treatment plants and potential enzyme-based and other solutions.
Biology for mathematics microbiology and epidemiology biol 181_22022021preciousagyei
This document provides an introduction to the course Biology for Mathematics at Kwame Nkrumah University of Science & Technology. The course objectives are to introduce microbiology, the nature and kinds of microorganisms, their nutrition and growth, growth kinetics, and epidemiology principles and methods. The document defines microbiology and describes different types of microorganisms. It also discusses bacterial morphology, arrangements, nutrition, growth kinetics including growth curves, and the scope and terms of epidemiology.
This document discusses the roles of micro-organisms in ecosystems. It describes how viruses, bacteria, algae, fungi, and protists help control nutrient cycling and biodiversity. Bacteria are important for decomposition, recycling nitrogen, and producing nutrients for plants. Fungi decompose dead organic matter. The document also discusses symbiotic relationships between organisms, including mutualism, parasitism, and commensalism. An example of mutualism is nitrogen-fixing bacteria providing nitrates to plants in exchange for food.
This document summarizes a study on developing a silver/chitosan bionanocomposite using the extract of the Peepal tree (Ficus religiosa) for combating infections associated with biomedical implants. Silver nanoparticles were biosynthesized using the plant extract and characterized using UV-Vis spectroscopy and TEM. The nanoparticles were then incorporated into a chitosan matrix to form a bionanocomposite. This composite was tested as a coating on stainless steel implants to provide antimicrobial properties and reduce biomaterial-associated infections. The authors believe this to be the first example of mythology (the Peepal tree) converging with nanotechnology for a biomedical application.
Bioluminescence, the production of light by living organisms, can be used to sensitively monitor pollution through assays that detect changes in bioluminescence caused by toxic substances. One of the earliest assays was developed using the bacterium Vibrio fisheri, measuring inhibition of its bioluminescence by pollutants. Recombinant bacteria like E. coli transformed with bioluminescence genes have also been used for biomonitoring due to their genetic tractability and ability to detect a wide range of pollutants in various environments. Dinoflagellates exhibiting bioluminescence have further been employed for toxicity assessments of metals and other contaminants in aquatic systems.
Microbes live in nearly every habitat on Earth and have adapted to survive in even the most extreme environments. They play important roles in ecosystems, industrial processes, food production, and the human body. While some can cause disease, many microbes provide benefits like decomposing organic matter, fixing nitrogen, and producing food items and chemicals. Their small size allows microbes to thrive nearly everywhere and they remain largely undiscovered due to their microscopic scale.
1. Plankton are microscopic aquatic organisms that drift or float in marine and freshwater systems. They include phytoplankton, which are photosynthetic, and zooplankton, which feed on phytoplankton.
2. Plankton are classified in many ways, including by nutritional requirements (phyto, zoo, sapro), length of planktonic life (holo, mero, tycho), size (ultra to mega), and habitat (marine, freshwater). The most important classifications are phytoplankton, which produce food via photosynthesis, and zooplankton, which consume phytoplankton.
3. Primary productivity refers
Biotechnology can be used to help clean up the environment through various methods. These include using microorganisms to break down waste at landfills and during composting. A process called bioremediation uses naturally occurring microbes to break down pollutants. Other methods involve using biosensors to detect pollutants and genetically engineering bacteria to eat oil spills. Biotechnology techniques can also be applied to treating industrial waste, removing toxins from mining operations, and controlling pests and weeds in a more sustainable way.
This document discusses the application of molecular biotechnology in environmental protection, including synthetic biology, bio-degradation studies, and case studies. It covers using the moss Physcomitrella patens as a model organism for biotechnology due to its fast life cycle and high efficiency of gene targeting. Transformation techniques are discussed for inserting genes into P. patens and other organisms like E. coli and yeast. Bio-degradation of estrogens from wastewater is also examined along with challenges in wastewater treatment plants and potential enzyme-based and other solutions.
Biology for mathematics microbiology and epidemiology biol 181_22022021preciousagyei
This document provides an introduction to the course Biology for Mathematics at Kwame Nkrumah University of Science & Technology. The course objectives are to introduce microbiology, the nature and kinds of microorganisms, their nutrition and growth, growth kinetics, and epidemiology principles and methods. The document defines microbiology and describes different types of microorganisms. It also discusses bacterial morphology, arrangements, nutrition, growth kinetics including growth curves, and the scope and terms of epidemiology.
This document discusses the roles of micro-organisms in ecosystems. It describes how viruses, bacteria, algae, fungi, and protists help control nutrient cycling and biodiversity. Bacteria are important for decomposition, recycling nitrogen, and producing nutrients for plants. Fungi decompose dead organic matter. The document also discusses symbiotic relationships between organisms, including mutualism, parasitism, and commensalism. An example of mutualism is nitrogen-fixing bacteria providing nitrates to plants in exchange for food.
This document summarizes a study on developing a silver/chitosan bionanocomposite using the extract of the Peepal tree (Ficus religiosa) for combating infections associated with biomedical implants. Silver nanoparticles were biosynthesized using the plant extract and characterized using UV-Vis spectroscopy and TEM. The nanoparticles were then incorporated into a chitosan matrix to form a bionanocomposite. This composite was tested as a coating on stainless steel implants to provide antimicrobial properties and reduce biomaterial-associated infections. The authors believe this to be the first example of mythology (the Peepal tree) converging with nanotechnology for a biomedical application.
Bioluminescence, the production of light by living organisms, can be used to sensitively monitor pollution through assays that detect changes in bioluminescence caused by toxic substances. One of the earliest assays was developed using the bacterium Vibrio fisheri, measuring inhibition of its bioluminescence by pollutants. Recombinant bacteria like E. coli transformed with bioluminescence genes have also been used for biomonitoring due to their genetic tractability and ability to detect a wide range of pollutants in various environments. Dinoflagellates exhibiting bioluminescence have further been employed for toxicity assessments of metals and other contaminants in aquatic systems.
Microbes live in nearly every habitat on Earth and have adapted to survive in even the most extreme environments. They play important roles in ecosystems, industrial processes, food production, and the human body. While some can cause disease, many microbes provide benefits like decomposing organic matter, fixing nitrogen, and producing food items and chemicals. Their small size allows microbes to thrive nearly everywhere and they remain largely undiscovered due to their microscopic scale.
1. Plankton are microscopic aquatic organisms that drift or float in marine and freshwater systems. They include phytoplankton, which are photosynthetic, and zooplankton, which feed on phytoplankton.
2. Plankton are classified in many ways, including by nutritional requirements (phyto, zoo, sapro), length of planktonic life (holo, mero, tycho), size (ultra to mega), and habitat (marine, freshwater). The most important classifications are phytoplankton, which produce food via photosynthesis, and zooplankton, which consume phytoplankton.
3. Primary productivity refers
Bioremediation is a process that uses microorganisms to degrade contaminants in various media like water, soil, and subsurface materials. There are three main types of bioremediation: biostimulation adds nutrients to stimulate microbial growth; bioaugmentation adds specialized microbes to sites where indigenous microbes cannot fully degrade contaminants; and intrinsic bioremediation relies on natural microbial attenuation in soils and waters. Bioremediation depends on microbial metabolism, where microbes use contaminants for energy and building cell materials through catabolic and anabolic processes.
Heavy metals, particularly silver and mercury, have a variety of applications in controlling microbial population. Ps. aeruginosa is a high intrinsic resistant to antibiotics and heavy metals including Copper Sulfate, Silver Sulfate, Mercury chloride, Lead nitrate, Zinc sulfate, Cadmium sulfate, and Nickel sulfate.
Photodynamic Effect. Experience of Application of Photosensibility Series for...Agriculture Journal IJOEAR
The kinetics of the destruction of standard museum strains of microorganisms as a result of photodynamic action of red light and a number of non-toxic photosensitizers in the process of water conditioning has been studied experimentally. Prokaryotic cells of Escherichia coli ATCC 35218, eukaryotic cells of Candida albicans ATCC 24433 were used as the objects of the study. Eosin H, sodium fluorescein, methylene blue and riboflavin (vitamin B2) in concentrations of 10 mg/l served as photosensitizers. A photodynamic effect was established with respect to microorganism cells, leading to their death in the presence of photosensitizers and red light. It has been shown that riboflavin and fluorescein are the most effective for eukaryotes (on the example of Candida albicans ATCC 24433), which help to reduce the number of colonies of cells in 2 hours of observations by more than 3.0 and 11.0 times, respectively. It was found that the death of prokaryotic cells in the case of Escherichia coli ATCC 35218 is most effective in causing methylene blue, riboflavin (vitamin B2). For 2 hours of observations in their presence due to photodynamic action, microflora decreases in 36.0 and 90.0 times, respectively. The photodynamic effect of eosin against the microorganisms under study was the smallest, which is explained by the peculiarities of its chemical structure, including phenolic groups, which are known to exhibit an antioxidant effect. It is shown that fluorescein and methylene blue are most promising for effective lethal action against pathogenic microflora in pool water. Riboflavin is most effective for purification of drinking water used for cooking and drinking in public, including pre-school and school meals, which will allow not only to exclude the possibility of mass poisonings, but also to provide a daily intake of vitamin B2 with a glass of water.
This document provides an overview of environmental microbiology. It defines environmental microbiology as the study of microbial interactions, processes, and communities in the environment. It discusses the diversity of microbes and their roles in ecosystems. It describes various microbial habitats including soil, water, other organisms, and extreme environments. It also covers symbiotic relationships between microbes and other organisms. Biogeochemical cycles mediated by microbes, such as carbon, nitrogen, sulfur, and phosphorus cycles are explained. The role of microbes in environments without sunlight is also discussed.
This document provides information about microbes including their types, growth, and role in the environment. It discusses that microbes are tiny organisms that can only be seen under a microscope. They are found everywhere and play vital roles such as breaking down waste, producing nutrients for plants, and maintaining healthy human microbiomes. The document also describes the different types of microbes based on oxygen needs, temperature tolerance, pH tolerance, and other characteristics. It explains the growth phases of microbes and factors that influence their growth such as nutrients, temperature, oxygen levels and pH. Finally, it discusses the important roles microbes play in environments like producing oxygen, nutrient cycling, supporting agriculture, and maintaining livable climates.
This document discusses the analytical technique of bioluminescence. It begins by defining bioluminescence as the production and emission of light by living organisms through a chemical reaction involving luciferin and luciferase. This reaction produces light energy. Bioluminescence assays can be used to measure cell proliferation, apoptosis, drug metabolism, and kinase activity. The document then explains the principle behind bioluminescence and provides steps for a bioluminescence procedure using cell lysis and a luminometer to measure light emission. Finally, some applications of bioluminescence are mentioned such as food testing, imaging, and medical research.
A brief description on the phenomenon of Bio-luminescence and it's applications in various industries like to detect good food gone bad in food industries,drug testing in pharmaceuticals industry and as reporter genes in genetic engineering.
Biotechnology for Solid waste ManagementHIMANSHU JAIN
Biotechnology in solid waste management is the process of application of science and technology to the living and non-living materials for the treatment and disposal of solid waste and wastewater in controlled conditions without disturbing the ecosystem.
- Biomagnification refers to the increasing concentration of chemicals or toxins in organisms at higher levels of the food chain. Nanoparticles used in nanofungicides can potentially biomagnify due to their persistence, ability to accumulate in organisms, and low degradation rates.
- Nanoparticles can enter plants directly through soil, water and air or systemically through the use of nano-based agricultural chemicals. Once inside plants, nanoparticles can cause toxicity, hormone imbalances, and accumulation in plant cells and tissues.
- For safe use of nanotechnology in agriculture, more studies on nanoparticle impacts are needed. Biodegradable nanoparticles should be developed and thorough safety testing of nano-products conducted to prevent biom
Formation Structure and Internal Functions of Microbial mats And Biofilmsshahrukh khan
This document provides an overview of microbial mats and biofilms. It defines both as surface-associated layers of microbial cells embedded in an extracellular matrix. Microbial mats are multilayer sheets that cover sediments and are composed primarily of bacteria and archaea. Microbial mats were some of the earliest life forms on Earth, dating back 3.5 billion years ago. They form complex communities that allow bacteria to survive in harsh environments. Biofilms are microbial communities that attach to and cover solid surfaces. They develop through a multi-stage process and contain diverse microorganisms, including bacteria, archaea, protozoa, fungi and algae. Both microbial mats and biofilms are important in environmental engineering applications like wastew
This document provides information about bioluminescence. It begins with an acknowledgement and introduction defining bioluminescence. The document then discusses the history of bioluminescence research, how it evolved in different organisms, and how the bioluminescence reaction works on a chemical level. It lists several bioluminescent organisms and describes some uses of bioluminescence in nature for camouflage, attraction, defense, warning, and communication. The document also outlines several modern applications of bioluminescence in fields like biology, medicine, the environment, and industry. It distinguishes between bioluminescence and biofluorescence and briefly describes two recent research papers on biol
Discussed about Sources of Heavy metals , Sources of Heavy metals , Bioremediation, Biosorption by Fungi, Algae, Bacteria , Factors affecting Biosorption , Heavy metals relation with human beings
This document discusses bioluminescence, which is the production and emission of light by living organisms through the conversion of chemical energy to light energy. Bioluminescence is found across many diverse phylogenetic groups and can serve different purposes, including communication during mating, defense from predators, and attracting prey. The mechanisms of bioluminescence vary and can involve symbiotic bacteria, extracellular glands, or intracellular light production within specialized organs or cells. Bioluminescence has applications in areas like space research, medical research, and pest management.
Bioremediation of heavy metals pollution by Udaykumar Pankajkumar BhanushaliUdayBhanushali111
This document summarizes techniques for bioremediating heavy metal pollution using plants (phytoremediation) and microorganisms. It discusses how plants and microbes like bacteria, fungi, and algae can uptake, accumulate, immobilize, or transform heavy metals into less toxic forms. Integrated approaches are also proposed, such as using plants inoculated with metal-resistant endophytic bacteria or combining phytoremediation with microbial remediation. The document provides examples of plant and microbial species effective for remediating various metals like mercury, lead, chromium, and more. It explains the mechanisms by which these living organisms remediate heavy metal contamination in soils and water.
Bioremediation uses microorganisms to break down pollutants in the environment. It can be used to clean up oil spills, wastewater, and contaminated soil. Various techniques exist including biostimulation, which adds nutrients to stimulate microbes, and bioaugmentation, which introduces new microbes. Nanoparticles are also being used for nano bioremediation due to their large surface area and ability to penetrate contaminated areas. The document discusses using bacteria, fungi, and genetically engineered organisms to degrade pollutants and discusses turning waste into bioplastics or other materials through bioremediation techniques.
This document provides information about biofilms. It begins with general information about what biofilms are and how they form and develop. It then discusses some positive applications of biofilms, including in bioremediation, water treatment, microbial leaching, and microbial fuel cells. Finally, it addresses some problems with biofilms. The document contains detailed information about biofilm structure, composition, formation processes, environmental factors that influence biofilms, and advantages they provide to microorganisms.
In Situ Bioremediation;Types, Advantages and limitations Zohaib HUSSAIN
In situ bioremediation uses microorganisms to treat hazardous waste in place, without removing the contaminated material. It can be applied in both the unsaturated zone (e.g. bioventing) and saturated zones (groundwater). Intrinsic bioremediation relies on naturally occurring microbes, while engineered approaches accelerate degradation by supplying oxygen, nutrients, or other stimulants. Successful in situ bioremediation is evidenced by measuring increased microbial activity, growth of degrading populations, and production of degradation byproducts at the site.
11.biosorption of heavy metals from aqueous solutions using water hyacinth as...Alexander Decker
This document summarizes a study that investigated using water hyacinth fiber as a low-cost biosorbent for removing copper and zinc ions from aqueous solutions. The study examined the effect of initial solution concentration, initial biomass concentration, and temperature on biosorption. Equilibrium adsorption data fit well with four isotherm models (Langmuir, Freundlich, Temkin, Dubinin-Radushkevich). Results showed that water hyacinth has a high affinity and sorption capacity for copper and zinc ions, with maximum capacities of 99.42 mg Cu2+ and 83.01 mg Zn2+ per 1 g of biomass. The study demonstrated that water hyacinth fiber is an
This document summarizes a study on the batch equilibrium biosorption of nickel, chromium, and cobalt ions from aqueous solution using bitter leaf (Vernonia amygdalina) as the biosorbent. Key findings include:
- FTIR analysis showed the presence of functional groups on bitter leaf that could participate in binding metal ions. Biosorption capacity was highest for nickel ions and lowest for cobalt ions.
- Biosorption increased with increasing pH, indicating an ion exchange process. Maximum biosorption occurred between pH 5-7 for nickel and pH 4-6 for chromium and cobalt.
- Kinetic studies showed initial rapid biosorption followed by a slower phase, with pseudosecond
This document discusses nanoscience and nanotechnology applications in agriculture. It defines nanotechnology as controlling matter on an atomic and molecular scale between 1 to 100 nm. The document outlines several applications of nanotechnology in agriculture including controlled release of agrochemicals like fertilizers and pesticides, targeted delivery of biomolecules to plants, use of nanosensors to detect pathogens and monitor soil/plant growth, nanofertilizers to address nutrient deficiencies, nano-pesticides for effective pest control, nanoherbicides that target weed roots, and nanobarcodes for tracking agricultural products. The document also discusses using nanotechnology to recycle agricultural wastes and enhance biofuel production. While promising, the document notes nanotechnology raises
The distribution of microorganisms in nature depends on available resources and growth conditions like temperature, pH, water, light, and oxygen. Key environments include soil, freshwater, and marine. In soil, microbes play important roles in nutrient cycling and plant interactions through symbiotic relationships like mycorrhizal associations and nitrogen-fixing root nodules with legumes. Aquatic environments vary in properties and microbial compositions between oceans, lakes, and rivers. Microbes interact through neutral, commensal, and symbiotic relationships, while competing for resources and nutrients through biogeochemical cycles like carbon, nitrogen, and sulfur.
Bioremediation is a process that uses microorganisms to degrade contaminants in various media like water, soil, and subsurface materials. There are three main types of bioremediation: biostimulation adds nutrients to stimulate microbial growth; bioaugmentation adds specialized microbes to sites where indigenous microbes cannot fully degrade contaminants; and intrinsic bioremediation relies on natural microbial attenuation in soils and waters. Bioremediation depends on microbial metabolism, where microbes use contaminants for energy and building cell materials through catabolic and anabolic processes.
Heavy metals, particularly silver and mercury, have a variety of applications in controlling microbial population. Ps. aeruginosa is a high intrinsic resistant to antibiotics and heavy metals including Copper Sulfate, Silver Sulfate, Mercury chloride, Lead nitrate, Zinc sulfate, Cadmium sulfate, and Nickel sulfate.
Photodynamic Effect. Experience of Application of Photosensibility Series for...Agriculture Journal IJOEAR
The kinetics of the destruction of standard museum strains of microorganisms as a result of photodynamic action of red light and a number of non-toxic photosensitizers in the process of water conditioning has been studied experimentally. Prokaryotic cells of Escherichia coli ATCC 35218, eukaryotic cells of Candida albicans ATCC 24433 were used as the objects of the study. Eosin H, sodium fluorescein, methylene blue and riboflavin (vitamin B2) in concentrations of 10 mg/l served as photosensitizers. A photodynamic effect was established with respect to microorganism cells, leading to their death in the presence of photosensitizers and red light. It has been shown that riboflavin and fluorescein are the most effective for eukaryotes (on the example of Candida albicans ATCC 24433), which help to reduce the number of colonies of cells in 2 hours of observations by more than 3.0 and 11.0 times, respectively. It was found that the death of prokaryotic cells in the case of Escherichia coli ATCC 35218 is most effective in causing methylene blue, riboflavin (vitamin B2). For 2 hours of observations in their presence due to photodynamic action, microflora decreases in 36.0 and 90.0 times, respectively. The photodynamic effect of eosin against the microorganisms under study was the smallest, which is explained by the peculiarities of its chemical structure, including phenolic groups, which are known to exhibit an antioxidant effect. It is shown that fluorescein and methylene blue are most promising for effective lethal action against pathogenic microflora in pool water. Riboflavin is most effective for purification of drinking water used for cooking and drinking in public, including pre-school and school meals, which will allow not only to exclude the possibility of mass poisonings, but also to provide a daily intake of vitamin B2 with a glass of water.
This document provides an overview of environmental microbiology. It defines environmental microbiology as the study of microbial interactions, processes, and communities in the environment. It discusses the diversity of microbes and their roles in ecosystems. It describes various microbial habitats including soil, water, other organisms, and extreme environments. It also covers symbiotic relationships between microbes and other organisms. Biogeochemical cycles mediated by microbes, such as carbon, nitrogen, sulfur, and phosphorus cycles are explained. The role of microbes in environments without sunlight is also discussed.
This document provides information about microbes including their types, growth, and role in the environment. It discusses that microbes are tiny organisms that can only be seen under a microscope. They are found everywhere and play vital roles such as breaking down waste, producing nutrients for plants, and maintaining healthy human microbiomes. The document also describes the different types of microbes based on oxygen needs, temperature tolerance, pH tolerance, and other characteristics. It explains the growth phases of microbes and factors that influence their growth such as nutrients, temperature, oxygen levels and pH. Finally, it discusses the important roles microbes play in environments like producing oxygen, nutrient cycling, supporting agriculture, and maintaining livable climates.
This document discusses the analytical technique of bioluminescence. It begins by defining bioluminescence as the production and emission of light by living organisms through a chemical reaction involving luciferin and luciferase. This reaction produces light energy. Bioluminescence assays can be used to measure cell proliferation, apoptosis, drug metabolism, and kinase activity. The document then explains the principle behind bioluminescence and provides steps for a bioluminescence procedure using cell lysis and a luminometer to measure light emission. Finally, some applications of bioluminescence are mentioned such as food testing, imaging, and medical research.
A brief description on the phenomenon of Bio-luminescence and it's applications in various industries like to detect good food gone bad in food industries,drug testing in pharmaceuticals industry and as reporter genes in genetic engineering.
Biotechnology for Solid waste ManagementHIMANSHU JAIN
Biotechnology in solid waste management is the process of application of science and technology to the living and non-living materials for the treatment and disposal of solid waste and wastewater in controlled conditions without disturbing the ecosystem.
- Biomagnification refers to the increasing concentration of chemicals or toxins in organisms at higher levels of the food chain. Nanoparticles used in nanofungicides can potentially biomagnify due to their persistence, ability to accumulate in organisms, and low degradation rates.
- Nanoparticles can enter plants directly through soil, water and air or systemically through the use of nano-based agricultural chemicals. Once inside plants, nanoparticles can cause toxicity, hormone imbalances, and accumulation in plant cells and tissues.
- For safe use of nanotechnology in agriculture, more studies on nanoparticle impacts are needed. Biodegradable nanoparticles should be developed and thorough safety testing of nano-products conducted to prevent biom
Formation Structure and Internal Functions of Microbial mats And Biofilmsshahrukh khan
This document provides an overview of microbial mats and biofilms. It defines both as surface-associated layers of microbial cells embedded in an extracellular matrix. Microbial mats are multilayer sheets that cover sediments and are composed primarily of bacteria and archaea. Microbial mats were some of the earliest life forms on Earth, dating back 3.5 billion years ago. They form complex communities that allow bacteria to survive in harsh environments. Biofilms are microbial communities that attach to and cover solid surfaces. They develop through a multi-stage process and contain diverse microorganisms, including bacteria, archaea, protozoa, fungi and algae. Both microbial mats and biofilms are important in environmental engineering applications like wastew
This document provides information about bioluminescence. It begins with an acknowledgement and introduction defining bioluminescence. The document then discusses the history of bioluminescence research, how it evolved in different organisms, and how the bioluminescence reaction works on a chemical level. It lists several bioluminescent organisms and describes some uses of bioluminescence in nature for camouflage, attraction, defense, warning, and communication. The document also outlines several modern applications of bioluminescence in fields like biology, medicine, the environment, and industry. It distinguishes between bioluminescence and biofluorescence and briefly describes two recent research papers on biol
Discussed about Sources of Heavy metals , Sources of Heavy metals , Bioremediation, Biosorption by Fungi, Algae, Bacteria , Factors affecting Biosorption , Heavy metals relation with human beings
This document discusses bioluminescence, which is the production and emission of light by living organisms through the conversion of chemical energy to light energy. Bioluminescence is found across many diverse phylogenetic groups and can serve different purposes, including communication during mating, defense from predators, and attracting prey. The mechanisms of bioluminescence vary and can involve symbiotic bacteria, extracellular glands, or intracellular light production within specialized organs or cells. Bioluminescence has applications in areas like space research, medical research, and pest management.
Bioremediation of heavy metals pollution by Udaykumar Pankajkumar BhanushaliUdayBhanushali111
This document summarizes techniques for bioremediating heavy metal pollution using plants (phytoremediation) and microorganisms. It discusses how plants and microbes like bacteria, fungi, and algae can uptake, accumulate, immobilize, or transform heavy metals into less toxic forms. Integrated approaches are also proposed, such as using plants inoculated with metal-resistant endophytic bacteria or combining phytoremediation with microbial remediation. The document provides examples of plant and microbial species effective for remediating various metals like mercury, lead, chromium, and more. It explains the mechanisms by which these living organisms remediate heavy metal contamination in soils and water.
Bioremediation uses microorganisms to break down pollutants in the environment. It can be used to clean up oil spills, wastewater, and contaminated soil. Various techniques exist including biostimulation, which adds nutrients to stimulate microbes, and bioaugmentation, which introduces new microbes. Nanoparticles are also being used for nano bioremediation due to their large surface area and ability to penetrate contaminated areas. The document discusses using bacteria, fungi, and genetically engineered organisms to degrade pollutants and discusses turning waste into bioplastics or other materials through bioremediation techniques.
This document provides information about biofilms. It begins with general information about what biofilms are and how they form and develop. It then discusses some positive applications of biofilms, including in bioremediation, water treatment, microbial leaching, and microbial fuel cells. Finally, it addresses some problems with biofilms. The document contains detailed information about biofilm structure, composition, formation processes, environmental factors that influence biofilms, and advantages they provide to microorganisms.
In Situ Bioremediation;Types, Advantages and limitations Zohaib HUSSAIN
In situ bioremediation uses microorganisms to treat hazardous waste in place, without removing the contaminated material. It can be applied in both the unsaturated zone (e.g. bioventing) and saturated zones (groundwater). Intrinsic bioremediation relies on naturally occurring microbes, while engineered approaches accelerate degradation by supplying oxygen, nutrients, or other stimulants. Successful in situ bioremediation is evidenced by measuring increased microbial activity, growth of degrading populations, and production of degradation byproducts at the site.
11.biosorption of heavy metals from aqueous solutions using water hyacinth as...Alexander Decker
This document summarizes a study that investigated using water hyacinth fiber as a low-cost biosorbent for removing copper and zinc ions from aqueous solutions. The study examined the effect of initial solution concentration, initial biomass concentration, and temperature on biosorption. Equilibrium adsorption data fit well with four isotherm models (Langmuir, Freundlich, Temkin, Dubinin-Radushkevich). Results showed that water hyacinth has a high affinity and sorption capacity for copper and zinc ions, with maximum capacities of 99.42 mg Cu2+ and 83.01 mg Zn2+ per 1 g of biomass. The study demonstrated that water hyacinth fiber is an
This document summarizes a study on the batch equilibrium biosorption of nickel, chromium, and cobalt ions from aqueous solution using bitter leaf (Vernonia amygdalina) as the biosorbent. Key findings include:
- FTIR analysis showed the presence of functional groups on bitter leaf that could participate in binding metal ions. Biosorption capacity was highest for nickel ions and lowest for cobalt ions.
- Biosorption increased with increasing pH, indicating an ion exchange process. Maximum biosorption occurred between pH 5-7 for nickel and pH 4-6 for chromium and cobalt.
- Kinetic studies showed initial rapid biosorption followed by a slower phase, with pseudosecond
This document discusses nanoscience and nanotechnology applications in agriculture. It defines nanotechnology as controlling matter on an atomic and molecular scale between 1 to 100 nm. The document outlines several applications of nanotechnology in agriculture including controlled release of agrochemicals like fertilizers and pesticides, targeted delivery of biomolecules to plants, use of nanosensors to detect pathogens and monitor soil/plant growth, nanofertilizers to address nutrient deficiencies, nano-pesticides for effective pest control, nanoherbicides that target weed roots, and nanobarcodes for tracking agricultural products. The document also discusses using nanotechnology to recycle agricultural wastes and enhance biofuel production. While promising, the document notes nanotechnology raises
The distribution of microorganisms in nature depends on available resources and growth conditions like temperature, pH, water, light, and oxygen. Key environments include soil, freshwater, and marine. In soil, microbes play important roles in nutrient cycling and plant interactions through symbiotic relationships like mycorrhizal associations and nitrogen-fixing root nodules with legumes. Aquatic environments vary in properties and microbial compositions between oceans, lakes, and rivers. Microbes interact through neutral, commensal, and symbiotic relationships, while competing for resources and nutrients through biogeochemical cycles like carbon, nitrogen, and sulfur.
The document discusses the removal of heavy metals from polluted sites using microorganisms through the process of bioremediation. It outlines how certain bacteria, algae, and fungi are able to uptake and accumulate heavy metals through various binding mechanisms. Bioremediation holds promise as a more eco-friendly and cost-effective alternative to conventional wastewater treatment technologies. Ongoing research is focused on determining the most suitable bioremediation strategies for different contaminated sites and optimizing environmental conditions to enhance microbial activity.
Biotechnology microorganisms in environmental protection.pptaiga1090
Environmental biotechnology uses microorganisms to solve environmental problems such as treating wastewater and solid waste, purifying air, degrading pollutants, and producing renewable fuels and materials. It involves processes like bioremediation which uses bacteria and fungi to break down hazardous waste, and biosensors which use microbes to detect pollutants. Key microorganisms employed include Pseudomonas bacteria to degrade hydrocarbons and activated sludge microbes to treat water. Biogas is also produced via microbial fermentation of organic wastes.
- Environmental microbiology studies microbial communities in environments like soil, water, and air.
- Microorganisms can survive in extreme conditions and play important roles in ecosystems. They are essential for biogeochemical cycles.
- Soil contains a diverse array of microorganisms including bacteria, fungi, actinomycetes, algae, and protozoa. These microbes drive key processes like decomposition and nutrient cycling.
- The most abundant microbes in soil are bacteria and fungi. They break down organic matter and recycle nutrients. Some bacteria fix nitrogen while others carry out nitrification or denitrification. Fungi also decompose organic matter and form relationships with plant roots.
This document provides an introduction to applied and environmental microbiology. It discusses key topics like applied microbiology which exploits microbes for societal benefit in industries like food production. Environmental microbiology studies microbes' roles in ecosystems like nutrient cycling. Microbial ecology examines interactions between microbes and other organisms. The text outlines the development of environmental microbiology as a field and lists subdisciplines like soil, aquatic and industrial microbiology. It describes microbes' ubiquity and roles in environments. Modern areas of the field include discovering new microbes and using microbes or their products in bioremediation, enhanced oil/mineral recovery, and understanding ecosystem processes like methane oxidation. The goal of the course is to understand microbes'
This document reviews the use of microalgae to biodegrade phenolic compounds in wastewater. It discusses how microalgae can remove over 70% of phenol from wastewater in a few days through metabolic pathways. The document also examines factors that affect microalgal growth, different culturing techniques like open and closed photobioreactor systems, and mechanisms by which microalgae degrade pollutants like phenol through the meta cleavage pathway. The conclusion emphasizes that microalgae significantly impact wastewater treatment and that understanding microorganism kinetics and mechanisms can further develop uses of microalgae for bioremediation.
Role of microorganisms in waste recycling centre and the warmth of cherished memories of the day i vowed to never try anything love again and I hope to contribute to innovative things that I have been saying about my life and prosperity baby girl and I am not a scammer to be honest with you and I love you babe and I love you babe and I love you babe and I love you so much my queen and I love you
This document provides an overview of bioremediation of metal contaminated soil. It discusses the sources of metal contamination in soil, the principles and types of bioremediation including in-situ and ex-situ techniques. It also describes the microorganisms used in bioremediation such as bacteria, fungi and algae, and the mechanisms involved including biosorption, bioimmobilization, bioleaching and biomineralization. Additionally, it covers phytoremediation techniques using plants and plant-microbe interactions in rhizoremediation. Designer microbe approaches for genetically engineered bioremediating organisms are also outlined.
This document provides an overview of the BIO361 Mycology course. The course examines the structures, physiology, nutrition, metabolism, reproduction, and dispersal of fungi. It justifies fungi as their own kingdom and describes their growth, genetic variation, and ability to tolerate extreme environments. The course objectives are to understand fungal taxonomy, life cycles, physiological processes, genetic systems, and importance. Lectures, practical sessions, assignments, tests, and an exam assess students on the topics of fungal morphology, specialized structures, differentiation, nutrition, metabolism, growth, reproduction, genetic systems, and spore dispersal.
This document discusses various topics in geomicrobiology including extremophiles, exomicrobiology, applications like ore leaching and microbial enhanced oil recovery, and techniques of bioleaching. It also discusses how microbes are being studied in space using facilities like BIOPAN and EXPOSE. Microbial fuel cells and closed loop life support systems like MELiSSA that use microbes are also summarized.
The document discusses the history and topics of microbiology. It covers key developments in microscopy that enabled the discovery of microorganisms in the 16th-17th centuries. It then summarizes debates around spontaneous generation and experiments by Redi, Schwann, and Pasteur that disproved this theory. The document describes the "Golden Age of Microbiology" from 1857-1914 where major discoveries were made linking microbes to disease, immunity, and antimicrobial treatments.
International Journal of Biometrics and Bioinformatics(IJBB) Volume (3) Issue...CSCJournals
The document summarizes a study on identifying potential microorganisms from a contaminated waste disposal site capable of remediating heavy metals. Physicochemical analysis of the site showed presence of metals like iron. Microbial consortium from the site was exposed to increasing concentrations of iron up to 800mg/l. A microorganism survived and grew at 500mg/l iron concentration. 16S rRNA sequencing and phylogenetic tree analysis identified the organism as Klebsiella pneumoniae, which was confirmed by biochemical tests. Bioinformatics tools like BLAST, ClustalW and PHYLIP were used to characterize the potential microorganism for bioremediation of heavy metals at the contaminated site.
The word MICROBIOLOGY describes exactly what the discipline is: the study of small living things. MICRO = small, BIO = living, and LOGY = to study. Microbiology (or specifically, bacteriology) is still a very young science and not yet completely understood.
This document discusses key concepts related to organisms and their environments. It defines environment as the sum of all external biotic and abiotic factors affecting an organism. It also defines important ecological terms like ecosystem, habitat, and ecological niche. The document outlines the components of ecosystems, including biotic factors like producers, consumers, and decomposers and abiotic factors like climate and soil. It discusses ecosystem structure and patterns, productivity, nutrient cycles, ecological succession, and ecosystem services. Finally, it covers some environmental issues like agricultural chemicals, biomagnification, solid waste management, and global warming.
Microbiology is the study of microorganisms that are too small to be seen with the naked eye and require a microscope. The document outlines the history, scope, and fields of microbiology. It discusses how microorganisms have influenced humans in both beneficial and detrimental ways and how microbiology relates to various disciplines like medicine, agriculture, food science, and the environment. The future of microbiology is focused on developing new drugs and vaccines, using molecular techniques to solve problems, and exploring microbial roles in food production, pollution degradation, and disease treatment.
Bioremediation uses microorganisms to break down contaminants in soil and water. There are three main types: biostimulation adds nutrients to encourage microbial growth; bioaugmentation adds microbes that degrade specific contaminants; and intrinsic bioremediation relies on naturally occurring microbes. Microbes metabolize contaminants through anabolism and catabolism, using contaminants for energy and building cell structures. Factors like microbial populations, contaminant availability, temperature, and nutrients influence bioremediation effectiveness.
1) The document discusses soil organisms, their classification, functions, and role in soil fertility. It describes bacteria, fungi, actinomycetes, algae, protozoa, nematodes, earthworms, ants and other micro and macro fauna found in soil.
2) These organisms play important roles like decomposing organic matter, recycling nutrients, fixing nitrogen, controlling pests and diseases, and creating soil structure and humus. Their interactions and biological processes regulate soil health.
3) Tests like Neubauer seedling, Sacket and Stewart techniques are used to evaluate soil fertility based on biological parameters like microbial population and activity. Some organisms can also harm plants through diseases, competition
Microbes involved in aerobic and anaerobic process in natureDharshinipriyaJanaki
This document provides an overview of microbes involved in aerobic and anaerobic processes in nature. It discusses bioremediation, the bioremediation cycle, biodegradation, and the roles of various microorganisms. Bioremediation uses microorganisms to break down environmental pollutants. The bioremediation cycle involves microbes consuming contaminants and converting them into harmless substances. Biodegradation is the breakdown of organic matter by microbes. Various microbes are involved in aerobic and anaerobic biodegradation processes to break down contaminants.
Soil Microbiology_MSP. related to microbes present in soilSanideepPathak
Soil microbiology is the study of microorganisms in soil such as bacteria, actinomycetes, fungi, algae and protozoa. Microorganisms are important for soil structure, fertility and biochemical processes like nitrogen fixation and degradation. The most abundant microorganisms in soil are bacteria and actinomycetes, which comprise about 40% each. Bacteria, actinomycetes and fungi play key roles in organic matter decomposition, nutrient cycling, plant growth promotion, and formation of soil structure. Microorganisms are essential for biogeochemical cycles including carbon, nitrogen and sulfur cycles. They can also be used for bioremediation of contaminated soils.
Dr. Sean Tan, Head of Data Science, Changi Airport Group
Discover how Changi Airport Group (CAG) leverages graph technologies and generative AI to revolutionize their search capabilities. This session delves into the unique search needs of CAG’s diverse passengers and customers, showcasing how graph data structures enhance the accuracy and relevance of AI-generated search results, mitigating the risk of “hallucinations” and improving the overall customer journey.
GridMate - End to end testing is a critical piece to ensure quality and avoid...ThomasParaiso2
End to end testing is a critical piece to ensure quality and avoid regressions. In this session, we share our journey building an E2E testing pipeline for GridMate components (LWC and Aura) using Cypress, JSForce, FakerJS…
In the rapidly evolving landscape of technologies, XML continues to play a vital role in structuring, storing, and transporting data across diverse systems. The recent advancements in artificial intelligence (AI) present new methodologies for enhancing XML development workflows, introducing efficiency, automation, and intelligent capabilities. This presentation will outline the scope and perspective of utilizing AI in XML development. The potential benefits and the possible pitfalls will be highlighted, providing a balanced view of the subject.
We will explore the capabilities of AI in understanding XML markup languages and autonomously creating structured XML content. Additionally, we will examine the capacity of AI to enrich plain text with appropriate XML markup. Practical examples and methodological guidelines will be provided to elucidate how AI can be effectively prompted to interpret and generate accurate XML markup.
Further emphasis will be placed on the role of AI in developing XSLT, or schemas such as XSD and Schematron. We will address the techniques and strategies adopted to create prompts for generating code, explaining code, or refactoring the code, and the results achieved.
The discussion will extend to how AI can be used to transform XML content. In particular, the focus will be on the use of AI XPath extension functions in XSLT, Schematron, Schematron Quick Fixes, or for XML content refactoring.
The presentation aims to deliver a comprehensive overview of AI usage in XML development, providing attendees with the necessary knowledge to make informed decisions. Whether you’re at the early stages of adopting AI or considering integrating it in advanced XML development, this presentation will cover all levels of expertise.
By highlighting the potential advantages and challenges of integrating AI with XML development tools and languages, the presentation seeks to inspire thoughtful conversation around the future of XML development. We’ll not only delve into the technical aspects of AI-powered XML development but also discuss practical implications and possible future directions.
Pushing the limits of ePRTC: 100ns holdover for 100 daysAdtran
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
How to Get CNIC Information System with Paksim Ga.pptxdanishmna97
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
UiPath Test Automation using UiPath Test Suite series, part 6DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
Alt. GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using ...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...SOFTTECHHUB
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
UiPath Test Automation using UiPath Test Suite series, part 5DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
1. Bio-catalysts
in Industrial and Environmental
biotechnology
– microorganisms
– enzymes
Selection and improvement
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
2. Microorganisms
• Where are they found?
• How diverse are they?
• Role in geochemical nutrient cycles.
• How do they grow and what are their requirements for
growth and biodegradation?
Microorganisms in waste treatment:
• Biodegradation and environmental clean up.
• Microbial production and products in industry
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
3. Microorganisms in the environment;
Challenging conventional views of life.
• Sagan and Margulis (1998) “Garden of Microbial Delights”.
– “ALL of the elements crucial to global life- oxygen,
nitrogen,phosphorus, sulfur, carbon- return to a usable
form through the intervention of microbes… Ecology is
based on the restorative decomposition of microbes and
molds, acting on plants and animals after they have died
to return their valuable chemical nutrients to the total
living system of life on earth”
• Gould (1996) “Life’s Grandeur” The Power of the Modal
Bacter.
– The first multicellular organisms do not enter the fossil
record until about 580 million years ago - this is after
about five sixths of life’s histroy have passed. Bacteria
have been the stayers and keepers of life’s history.
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
4. Microorganisms in the environment;
Challenging conventional views of life.
•Sagan and Margulis (1998) “Garden of Microbial Delights”.
–“ALL of the elements crucial to global life- oxygen,
nitrogen,phosphorus, sulfur, carbon- return to a usable
form through the intervention of microbes… Ecology is
based on the restorative decomposition of microbes and
molds, acting on plants and animals after they have died
to return their valuable chemical nutrients to the total
living system of life on earth”
•Gould (1996) “Life’s Grandeur” The Power of the Modal
Bacter.
–The first multicellular organisms do not enter the fossil
record until about 580 million years ago - this is after
about five sixths of life’s histroy have passed. Bacteria
have been the stayers and keepers of life’s history.
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
5. Microorganisms
Where are they found?
Diverse environments
• Virtually every environmental niche
• Extremes of pH and salinity
• Extremes of temperature and pressure
• Without air (Anaerobic)
• Growth on many chemical substrates
• Attached to surfaces in biofilms
• Geothermal vents and subterranean deposits
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
6. Microorganisms
Where are they found?
Biomass on the planet.
• Most culturing analysis misses over 99% of the
microbial population.
• Molecular techniques now reveal hidden diversity
• Heterotrophs - 5-20% biomass in sea waters - up
to 80% of the primary production
• Rich bacterial communities in sub-surface strata
(600 m deep) - up to 2 x 104 tons - more than all
flora and fauna -equivalent to 2 m layer over
planet!
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
7. Microorganisms
How diverse are they?
Plants &
Eubacteria Animals Archaea
• Diverse range of species
• Earliest life on the planet
• Anaerobic then aerobic
• Three Kingdoms
• Eukaryote Plants & Animals
• Eubacteria
• Archaebacteria
• Exteme living bacteria
3 billion years
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
8. Microorganisms
How diverse are they?
Diversity of bacteria in soil
16s rRNA sequences reveal true
diversity in soil DNA
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
9. Microorganisms
Role in geochemical
nutrient cycles.
• Microorganisms play a role as:
•PRIMARY PRODUCERS
•BIODEGRADERS AND CONSUMERS
• Critical role in cycles of many elements;
• Carbon and and Oxygen cycle
• Nitrogen cycle
• Sulfur cycle
• Phosphorus cycle
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
10. Microorganisms
How do they grow: requirements
for biodegradation?
• Nutrients
• Carbon, Nitrogen, Phosphorus, Sulfur
• Many chemicals supply these
• Micronutrients/ trace metals/ vitamins
• Electron acceptors - usually O2
• Converts / burns carbon substrate to CO2
Energy and biomass ie GROWTH
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
11. Microorganisms
Biodegradation
O2 consumption GROWTH - CELL
DIVISION
2.0µm
INCREASE IN
BIOMASS
ORGANIC
POLLUTANT
AND NUTRIENTS
(C,P,N,O,Fe,S……) SINGLE CO2
BACTERIUM evolved
Controlled release of energy
Slow Burning!
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
12. Microorganisms
Oxygen and Electron Acceptors: crucial for
Biodegradation reactions in the
environment.
2H+
H2 O
O2
SUBSTRATE
ADP
METABOLISM Pi
ATP H2/2e-
CARBON ENERGY
GROWTH/Biomass
CO2
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
13. Microorganisms
Role of electron acceptors;
rate of biodegradation
O2 NO3- SO42- Fe3+
H2O NO2- H2S Fe2+
N2
0.814V -0.214V -0.185V
0.741V
FAST SLOW
GROWTH GROWTH
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
14. Microorganisms
Anaerobic growth and
biodegradation
Fermented
Organic matter Acetic Acid
+
H2 , CO2
Methanogenesis
CH4 , CO2 , H2O
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
15. Microorganisms
Fixation of oxygen as a first
step in biodegradation
Cell membrane
ReductaseNAP FerredoxinNAP ISPNAP
NAD+
(OX) (OX) (OX)
O2
OH
OH
NADH ReductaseNAP FerredoxinNAP ISPNAP
+ H+ (RED) (RED) (RED)
Cell Biomass
Further degradation
CO2 Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
16. Microorganisms
Biological waste treatment;
Managing microorganisms for
environmental cleanup
• 10 x 106 Chemicals
– 8 x 106 Xenobiotic
– 1 x 106 Recalcitrant
• 0.4 x 106 traded at over 50 tonnes per year
• Toxicological/ biodegradative data on only
around 5000-6000
•Municipal waste-water treatment
•Biodegradation of industrial wastes
• petrochemicals, bulk chemical processes
• textiles, leathers
• metals
• Remediation of contaminated land in situ
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
18. Microorganisms
Biological waste treatment;
Advanced industrial membrane reactor.
E F F LU E N T F R E E O F P O LLU TA N T
W A S T E - W A T E R C O N T A IN IN G P O L L U T A N T S
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
20. Microorganisms
Cultivation of microorganisms
for industrial use.
Advanced laboratory
fermenters
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
21. Products from Microorganisms:
Overview of range of examples.
• Various foods and drinks
• Enzymes for varied uses (GM enzymes);
biocatalysts
• Engineered proteins ( antibodies )
• Vaccines and antibiotics (secondary metabolites)
• Primary metabolites and bulk chemicals (amino
acids (glutamic acid) and organic acids (acetic
acid)
• Pharmaceuticals and novel chiral chemicals
• Recovery of metals in bioleaching
• Biosensors (use of enzymes to specifically
detect chemicals in medical and )
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
22. Enzymes
Protein engineering
Tailor-made biocatalysts
• The efficient application of biocatalysts requires
the availability of suitable enzymes with high
activity and stability under process conditions,
desired substrate selectivity and high
enantioselectivity
• Rational (re)design versus directed evolution
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
23. Enzymes
Protein engineering
Genetic manipulation techniques
• Large-scale supply of enzymes at reasonable
price
• Identification of new biocatalysts (screening)
doesnot always yield suitable enzymes for a
given synthetic problem
• Computer-aided site-directed mutagenesis
• Directed (molecular) evolution
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
24. Enzymes
Protein engineering
Site-directed mutagenesis
• Requires structural information and knowledge
about relationship between sequence, structure,
function and mechanism
• Very information-intensive
• Rapid progress in NMR / X-ray methods
• Genome sequence information
• Molecular modeling, bioinformatics
• Prediction of selectivity, activity, stability etc.
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
25. Enzymes
Protein engineering
Rational redesign strategy
• Protein structure
• Planning of mutants, SDM
• Vectors containing mutated genes
• Transformation in E. coli
• Protein expression and purification
• Mutant enzyme analysis
• Negative mutants
• Improved mutant enzymes
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
26. Enzymes
Protein engineering
Rational redesign
• Amino acid substitutions often selected by
sequence comparison with homologous
sequences
• Results have to be carefully interpreted
• Minor changes by a single point mutation may
cause significant structural disturbance
• Comparison of 3D-structure of mutant and wild-
type enzyme necessary
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
27. Enzymes
Protein engineering
Directed evolution
• Evolutive biotechnology, molecular evolution
• Random mutagenesis of the gene encoding the
biocatalyst (e.g. by error-prone PCR)
• DNA shuffling: recombination of gene fragments
(staggered extension process or random priming
recombination)
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
28. Enzymes
Protein engineering
Directed evolution strategy
• Random mutagenesis
• Library of mutated genes
• Transformation in E. coli
• Mutant library > 10.000 clones
• Protein expression in microtiter plates
• Selection parameters
• Mutant enzyme and product analysis
• In vitro-recombination, transformation etc.
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
29. Enzymes
Protein engineering
Selection parameters
• Substrate range
• Stability in organic solvent
• Stability towards reaction conditions
• Thermal stability
• High-throughput product analysis
• Robot technology
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
30. Enzymes
Protein engineering
Selection parameters
• Hydrolysis of esters: agar-plate assay based on
pH indicators
• Parallel assaying of replica-plated colonies with
substrate analog
• Isotopically labeled substrates
• Capillary electrophoresis (7000 samples per day)
• Optimization with saturation mutagenesis
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica
31. Enzymes
Protein engineering
Improving thermostability
• Cold-adapted proteases
• Combined screening for activity, thermostability,
organic solvent tolerance and pH-profile
• Engineering of entire metabolic pathways
• Phytoene desaturase and lycopene cyclase
shuffling for carotenoid biosynthesis
• Molecular breeding
Giovanni Sannia
Università degli Studi di Napoli Federico II
Dipartimento di Chimica Organica e Biochimica