This document discusses food hazards and non-bacterial agents of foodborne illness. It begins by defining foodborne disease as any infectious or toxic disease caused by food or water according to the WHO. It then discusses various chemical, bacterial, parasitic, and fungal hazards including toxins produced by algae, fungi, and cyanobacteria. Specific parasites mentioned are Giardia, Entamoeba histolytica, and Cryptosporidium. Prion diseases like scrapie are also summarized. Control methods focus on food inspection and safety practices.
introduction of Fermented food
Fermented foods are an extremely important part of human diet and worldwide may contribute to as much as one third of human diet.
Different types of fermented food isused in butter, cheese, bread, fermented vegetables,fermented meats etc.
The scope of food fermentation ranged from producing alcoholic beverages, fermented milk and vegetable products to genetically engineered super bugs to carry out efficient fermentation to treatment and utilization of waste and overall producing nutritious and safe products with appealing qualities.
2. Fermented Food Definition: Fermented foods are those food produced by modification of raw material of either animal or vegetable origin by the activities of microorganisms. Bacteria , yeast and moulds can be used to produce a diverse range of products that differ in flavor, texture and stability from the original raw material.
Or
Fermented foods are those foods which are subjected to action of microorganisms or enzymes to get desirable biochemical changes and cause significant modification to food.
The microorganisms (although invisible) are present in the soil, water, air, and even in and on our bodies. Therefore, they can enter the food and grow rapidly if conditions are suitable for their growth and multiplication. This can lead to food spoilage that brings a disagreeable alteration in a normal state of food making it unsuitable for human consumption or industrial uses. Spoilage of food can also cause wastage of food due to deterioration and can reduce the nutritive value of food.
Fermented milk products, also known as cultured dairy foods, cultured dairy products, or cultured milk products, are dairy foods that have been fermented with lactic acid bacteria.
This particular presentation describes all the fermented milk products like yoghurt, cheese etc. VIEW, SHARE, ENJOY!
introduction of Fermented food
Fermented foods are an extremely important part of human diet and worldwide may contribute to as much as one third of human diet.
Different types of fermented food isused in butter, cheese, bread, fermented vegetables,fermented meats etc.
The scope of food fermentation ranged from producing alcoholic beverages, fermented milk and vegetable products to genetically engineered super bugs to carry out efficient fermentation to treatment and utilization of waste and overall producing nutritious and safe products with appealing qualities.
2. Fermented Food Definition: Fermented foods are those food produced by modification of raw material of either animal or vegetable origin by the activities of microorganisms. Bacteria , yeast and moulds can be used to produce a diverse range of products that differ in flavor, texture and stability from the original raw material.
Or
Fermented foods are those foods which are subjected to action of microorganisms or enzymes to get desirable biochemical changes and cause significant modification to food.
The microorganisms (although invisible) are present in the soil, water, air, and even in and on our bodies. Therefore, they can enter the food and grow rapidly if conditions are suitable for their growth and multiplication. This can lead to food spoilage that brings a disagreeable alteration in a normal state of food making it unsuitable for human consumption or industrial uses. Spoilage of food can also cause wastage of food due to deterioration and can reduce the nutritive value of food.
Fermented milk products, also known as cultured dairy foods, cultured dairy products, or cultured milk products, are dairy foods that have been fermented with lactic acid bacteria.
This particular presentation describes all the fermented milk products like yoghurt, cheese etc. VIEW, SHARE, ENJOY!
This presentation explains about the concept of food intoxication. The toxins produced by the microbes in food (fungal) and toxins present in the food stuff were provided. The information about the diseases caused by such toxins were disclosed.
Burden of Vector Borne Diseases Past, Present & FuturePradip Awate
Bharati Vidyapeeth Pune has recently organized National CME on VBDs. I delivered a speech on " Burden of Vector Borne Diseases Past, Present & Future".
This presentation deals with burden of prominent VBDs globally & in India with special reference to Maharashtra.
Food sanitation
Food sanitation
It included all practices involved in protecting food from risk of contamination, harmful bacteria, poisons and foreign bodies, preventing any bacteria from multiplying to an extent which would result in an illness of consumers; and destroying any harmful bacteria in the food by thorough cooking or processing.
The primary tenet of food-service sanitation is absolute cleanliness
It begins with personal hygiene, the safe handling of foods during preparation, and clean utensils, equipment, appliances, storage facilities, kitchen and dining room.
Definition of terms
Food – Any substance whether simple, mixed or compounded that is used as food, drink, confectionery or condiments.
Safety – is overall quality of food fit for consumption.
Sanitation – is a health of being clean and conducive to health.
Cleanliness – is the absence of visible soil or dirt and is not necessarily sanitized.
Microbiology - the branch of biology that deals with microorganisms and their effect on other microorganisms.
Microorganisms - organism of microscopic or submicroscopic
Food Infection - microbial infection resulting from ingestion of contaminated foods.
Food Intoxication - type of illness caused by toxins. Under favorable condition certain bacteria produce chemical compounds called toxins
Food Spoilage - means the original nutritional value, texture, flavor of the food are damaged, the food become harmful to people and unsuitable to eat.
Foodborne Illness – A disease carried or transmitted to people by food.
Food Safety : A Top Priority
Food safety is the responsibility in every person who is involve in food service. Serving safe food is the top priority for every food service employee.
Dangers of food borne illness
Individual – Food borne illness are the greatest danger to food safety. It could result to illness or diseases to an individual that would affect their overall health, work and personal lives.
Loss of family income
Increased insurance
Medical expenses
Cost of special dietary needs
Loss of productivity, leisure and travel opportunities
Death or funeral expense
Establishment – Food borne illness outbreak can cost an establishment thousands of pesos, it can even be the reason an establishment is forced to closed.
Loss of customers and sales
Loss of prestige and reputation
Lawsuits
Increase insurance premiums
Lowered employee morale
Employee absenteeism
Increase employee turn over
Embarrassment
Types of Food Contaminants
Biological Contaminants
Physical Contaminants
Chemical Contaminant
Biological Contaminant – A microbial contaminant that may cause a food borne illness (bacteria, viruses, fungi, parasites, biological toxins)
Examples:
Sea food toxins
Mushroom toxins
Clostridium Botulinum
Salmonella bacteria
Preventing Bio
This module is intended for community educators to teach their clients about cross-contamination. It is appropriate for general consumers and anyone that cooks for groups including religous institutions. It is not meant for commercial food service.
Comparative analysis on food infections and food intoxicationsProximaDhiman
comparing food intoxication and infection, microbiologically oriented information about various foo-borne diseases,
types of food-borne diseases and their comparison.
types of food infection
bacterial food borne infection
viral food borne infection
parasitic food borne infection
types of food intoxication-
1.chemical intoxication and their further divisions,
2.plant intoxication
3.animal intoxication
4.bacterial intoxication
5.fungal intoxication
ture, the population size of the species is regulated by environment factors. These factors are responsible for the check and balance of the living organisms. The event where living organisms leave and die without the aid of the man is termed as the natural control. Weather the abiotic factors are responsible for the natural control of the living organism; humidity and temperature are the common factors affecting this sector. Availability of the biotic factors is also a great determine for the survival of the living organisms. Many organisms attacked by pathogens causing diseases to the organisms.CONTROL OF PARASITES;METHODS; Reduction of the source of infection- the parasite is attacked within the host, thereby preventing the dissemination of the infecting agent. Therefore, a prompt diagnosis and treatment of parasitic diseases is an important component in the prevention of dissemination. Sanitary control of drinking water and food. Proper waste disposal – through establishing safe sewage systems, use of screened latrines, and treatment of night soil. The use of insecticides and other chemicals used to control the vector population. Protective clothing that would prevent vectors from resting in the surface of the body and inoculate pathogens during their blood meal. Good personal hygiene. Avoidance of unprotected sexual practices. (1Grazing management strategies in livestock (2Genetic selection (3Biological control and pasture ecology (4Vaccines (5 Dietary control-alternative forages (6 practice safe sex using condom (7 wash your hand regularly, especially after handling uncooked food or feces (8 drink clean water, including bottled water when you are traveling (9fecal exam and regular deworming 1.Grazing management strategies in livestock Management strategies include;Reduce stocking rate Here there is a positive effect on reducing parasites hence is a risk factor that affects the incidence of parasitism in livestock Use of clean grazing Grazing seasons are divided into 2 parts but if the livestock will grazing in different season there will be a dangerous to get infection hence will be at high risk.Mixed/alternate grazing Mixed grazing is based on diluting strategy, do not use cattle under 12 months.Rotational grazing Requires sub division of and careful management, rotation must be long enough for larvae from previous grazing to have died, difficult to estimate time required. 2.biological control The use of biological agents which are natural enemies of the parasites as the method of control,acts on the parasite larvae on pasture natural enemies of parasites include 1.viruses
mycotoxins are related to toxins produced by fungi.
This slides had all the necessary knowledge and information for mycotoxins which includes aflatoxin and other fungi toxins
Commonly used Microbes in Biotechnology.pptxChrisJSoguilon
Microbes are living organisms that must be amplified to be seen. Bacteria, fungus, and viruses are all examples of microbes. These tiny, living cells serve as miniature chemical factories in biotechnology and biomanufacturing, producing products such as amino acids, medicines, enzymes, and food additives.
Learn more about commonly used microbes in biotechnology in this PowerPoint!
Mycotoxins are naturally occurring toxins produced by certain moulds (fungi) and can be found in food.
The moulds grow on a variety of different crops and foodstuffs including cereals, nuts, spices, dried fruits, apples and coffee beans, often under warm and humid conditions.
Mycotoxins can cause a variety of adverse health effects and pose a serious health threat to both humans and livestock.
Probiotics are live bacteria or yeasts that are good for the digestive system.
Prebiotics as non-digestible ingredients in the food that can stimulate the activity of desirable microbiota
Carbon and Energy Sources for Bacterial Growth, Structure of spore, The factors that plays major role for the resistance of Bacterial Spore, Sporulation, Germination
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Instructions for Submissions thorugh G- Classroom.pptx
Food hazard & non bacterial agents of foodborne illness
1. Presented by
D. Mona Othman Albureikan
Food Microbiology
Food Hazard & Non-bacterial
Agents of Foodborne Illness
2. Food Hazard
- Food are complex mixtures of chemicals which
contain compounds that potentially harmful as well as
those that are beneficial.
- A simple insufficiency will lead to so many diseases
such as goiter (iodine deficiency), pellagra (nicotinic
acid), beriberi (thiamine) and scurvy (ascorbic acid).
3. - Several vitamins are toxic if consumed in excessive
amounts.
-Green potatoes and potato sprouts contain the toxic
alkaloid solanine which should be avoided.
- Legumes or pulses contain a number of anti-
nutritional factors such as phytate, trypsin inhibitors
and lectins (haemagglutinins).
- Many of these are destroyed by normal preparation
producers such as soaking and cooking.
Food Hazard
4. Possible causes of foodborne illness
- Chemical-Intrinsic ( natural
toxins).
- Red kidney bean poisoning,
(toxic mushrooms)
-Extrinsic contamination.
- Algae (paralytic shellfish
poisoning).
-Bacteria (infection and
intoxication).
- Fungi (mycotoxins).
- Parasite, Protozoa,Viruses.
5. World Health Organization (WHO)
-Foodborne disease has been defined by the World
Health Organization (WHO) as: any disease of an
infectious or toxic nature caused by
food or water.
-The WHO expert pointed out that
foodborne disease ( microbial origin )
are the most widespread problem in the contemporary
world and the cause of reduced economic productivity.
7. The Site of Foodborne Illness.
- The digestive tract: the
pathogenic (disease
producing) effect occur by
giving rise to symptoms such
as diarrhoea and vomiting.
- In the mouth, food is mixed
with saliva and broken down
mechanically to increase the
surface area available for
attack by digestive enzyme.
8. -Saliva is an alkaline fluid containing starch-degrading
(amylase) enzyme and the antimicrobial factors
immunoglobulin (IgA),
lyzozyme, lactoferrin and
lactoperoxidase.
-It provide assist chewing
and swallowing and performs a cleansing function, rising
the teeth and mouth to remove debris.
The Site of Foodborne Illness
9. * In the stomach, food is blended with gastric juice, an
acidic fluid containing hydrochloric acid that kill most of
the micro-organisms but their spores survive.
* In the small intestine most of the digestion and absorption
of food occur.
* In the healthy individual, the micro flora of the small
intestine is mainly comprised of lactobacilli and
streptococci, although , other bacteria have the ability to
colonize the epithelium and cause illness as a consequence.
The Site of Foodborne Illness
11. Helminths & nematodes
-There are number of animal parasites which can
be transmitted to human via food and water.
- These complex animals do not multiply in foods
and they can not be detected and enumerated by
cultural methods in the way that many bacteria
can.
- There presence is detected by direct
microscopic examination often following some
form of concentration and staining procedure.
12. Platyhelminths: liver flukes and
tapeworms
-The two most important classes of the Platyhelminths
(flatworms) are the Trematoda, which includes the liver
fluke Fasciola hepatica , and the cestoda which includes
tapeworm s of the genus Taenia.
- These organisms have complex life cycles which may
includes quit unrelated hosts at different stages .
13. ROUND WORMS
Perhaps the most notorious of the nematodes in
the context of foodborne illness and the only one
is trichinell spiralis , the agent of trichinellosis .
This parasite has no free-living stage but is
passed from host to host which can include a wide
range of mammals including humans and pigs .
Thus trichinellosis in the human population is
usually acquired from the consumption of infected
raw or poorly cooked pork products.
14. The control
The presence of these
parasite in animals
usually gives rise to
macroscopic changes in
tissues and organs which
can be recognized by
meat inspection after
slaughter.
15. Protozoa
-Amongst the protozoa only a few genera are of special
concern to the food microbiologist ; the flagellate Giardia,
the amoeboid Entamoeba (histolytica) and
three sporozoid genera Toxoplasma,
Sarcocystis and cryptosporidium.
found on salad vegetables and fruit and
could occur on any foods which are
washed with contaminated water or
handled by persons not observing good
hygienic practice.
16. TOXIGENIC ALGAE
A number of planktonic algae can produce very toxic
compounds which may be transported to filter-feeding
shellfish such as mussels or small herbivorous fish which
are food for larger carnivorous fish. These toxins pass to
human by consumption which are most toxic.
• PSP (paralytic shellfish poisoning) NSP (neurotoxic
shellfish poisoning) .
•* The toxins implicated in the various forms of shellfish
poisoning are not only undetectable organoleptically but
are also generally unaffected by cooking.
17. Dinoflagellate Toxins
-The genus Alexandrium are the best known of a number
of dinoflagellates responsible for paralytic shellfish
poisoning.
-The toxic metabolites of these
algae, which includes saxitoxin
and gonyautoxin block the nerve
transmission causing symptoms
such as tingling and numbness of the fingertips and lips,
and respiratory paralysis.
18. Cyanobacterial toxins
Several genera of
freshwater cyanobacteria
,especially species of
microcystis, anabaena
reservoirs and may cause
deaths of animals
drinking the contaminated
water.
19. Toxigenic fungi
It is the ability of some moulds to produce toxic
metabolites, known as mycotoxins, in foods and their
association with a range of human diseases, from
gastroenteric conditions to cancer.
Mycotoxins of Aspergillus ( Aflatoxin is not only acutely
toxic but, for the rat, it is amongst the most
carcinogenicity compounds known).
Maycotoxins of Penicillum ( Beriberi )
Mycotoxins of Fusarium ( Some species of fusarium cause
economically disease of crop plants).
20. Three of the most
important mycotoxins:
-Aflatoxin.
- Ochratoxin.
- T-2 toxin.
are
immunosuppressive
but react differently
against the immuno
system.
Toxigenic fungi
21. Food borne viruses
- As obligate intracellular parasites, viruses cannot
Multiply other than in a susceptible host cell
In recent years viruses have been recognized as an
important cause of food borne illness.
22. Polio
The only virus known to be
food borne. Polio can be
incubation period of 3-5 days
and characterized by headache,
fever and sore throat
contaminated milk had been the
principal source of foodborne
polio but this route of infection
had controlled by
improvements in hygiene
23. Hepatitis A and E
-Hepatitis A, the cause of infectious hepatitis.
-The incubation period varies between two and six
weeks.
-During this period the virus
multiplies in the cells of the
gut epithelium before it is
carried by the blood to the liver.
-Hepatitis E virus, it has unusual (RNA) structure.
- It is transmitted by the oral and produces illness after
an incubation period of 40 days.
24. Gastroenteritis viruses
-A number of different viruses have been implicated in
gastroenteritis by their presence in large number in
diarrhoeal stools.
- Food borne viral gastroenteritis is characterized by an
incubation period of 15-50h followed by diarrhoea and
vomiting which persists for 24-48 h.
- Enteric viruses may be introduced into foods either as
primary contamination, at source where the food is
produced, or as secondary contamination during handling,
preparation and serving.
25. Control
-An interesting approach is to use coli phage, a
bacteriophage which infects the enteric bacterium e. coli,
as a viral indicator.
- Coliphages do not require expensive
tissue culture techniques for their
enumeration since they can be detected
through their ability to from plaques in
culture of a suitable strain of e. coli.
- The problem of extraction of the coli
phage from food remain .
26. Spongiform Encephalopathies
-Spongiform encephalopathies are degenerative
disorders of the brain that occur in a number of species.
- They are recognized by the
clinical appearance of the
affected animal and the
histological changes they
produce in the brain.
-Microscopic examination
shows vacuoles in the neurons giving the grey matter
the appearance of a section through a sponge
27. Scrapie
-Scrapie,The disease of sheep and goats.
-Its name is derived from one of the symptoms an itching
which causes the infected animal to scrape itself against
objects.
• The agent of scrapie has
been
described as slow viruses
Due to their long
incubation periods.
• It is now known as a prion.
28. Prion
• It is contain no nucleic acid.
• It is neither a bacterium nor a
virus.
• It is invisible in the electron
microscope.
• Cannot be cultured in media or
cell cultures. and does not
stimulate the formation of
specific antibodies in infected
animals.
29. References
1- James M. Jay. (2013). Modern Food
Microbiology . Springer; Softcover reprint of
the original 1st ed. 1996 edition (April 26,
2013)
2- Martin R. Adams and Maurice O. Moss.
(2007). Food Microbiology. Royal Society of
Chemistry, Thomas Graham House, Science
Park, Milton Road, Cambridge CB4 0WF, UK.
September 11, 2007.
3- Some pictures from different sits.