Salient Features of India constitution especially power and functions
Foodborn illness
1.
2. Introduction
Microorganisms are small, living
organisms that can only be seen by
microscope.
Pathogens are microorganisms that
cause illness.
The consumption of food with toxins
(poisons) is the leading cause of
foodborne illness.
3. What are Germs?
Germs are microorganisms that are likely to cause
disease
Microorganisms are found throughout the
environment. Only
a very small number are pathogenic, i.e. capable
of causing disease, and not all diseases are
caused by microorganisms
Some bacteria live in our gut and help to digest
food.Some yeasts and bacteria are used in baking,
brewing
or cheese making
Bacteria are just one type of micro-organism,
alongside viruses, fungi and protozoa
5. Acidity
Food
Temperature
Conditions that favor growth of
foodborne microorganisms
Moisture
Time
Oxygen
6. Bacteria
Living, single celled organism
Carried by food, water, soil, animals,
humans, insects
Can survive freezing temps
Can cause food spoilage and illness
Can change form to protect themselves
when nutrients are unavailable - spores
7. Bacteria
Bacteria are prokaryotes and have a characteristic cellular
organisation. They are simple, small, unicellular organisms,
varying in size between 1-20 um long
Bacteria can be classified by shape:
Spherical (coccus) Spiral/helical Rod (bacilli)
e.g. Staphylococcus aureus e.g. Treponema e.g Escherichia coli
10. Staphylococcal Gastroenteritis
•Primarily found in the hair, nose, throat, and sores of humans
•Cooking cannot destroy these toxins
•Practice good hygiene!
11. Botulism
•Bacteria is found commonly in produce grown in the soil
•Grows without oxygen and produces a deadly toxin
•Without treatment, can cause death
12. Hemorrhagic Colitis
•Caused by and more commonly referred to as E.Coli poisoning
•Produced toxins in the intestines
•Can be present in feces of infected persons for several weeks after symptoms appear
13. Viruses
The smallest of microbial contaminants
Cannot reproduce in food, but will produce
more viruses once in a human cell
Can be transmitted from person to person,
people to food, and people to food-contact
surfaces
Usually contaminate through a
foodhandler’s improper hygiene
Classified as infections
2 major viral foodborne illnesses: Hepatitis
A and Norovirus
14. Hepatitis A
•An infected person may not show symptoms for several weeks, but can be very infectious
•Found primarily in feces of those infected
•Cooking does not destroy the virus
16. Parasites
Living organisms that need a host to
survive
Larger than bacteria, yet still
microscopic
Typically passed to humans through
animal host (cows, chickens, pigs, fish)
18. Fungi
Found naturally in air, soil, plants, water,
and some food.
Examples: mold, yeast, mushrooms
19. Types of Fungi
Molds Yeast
Responsible for spoilage of food Ability to spoil food rapidly
Results in odors, discoloration, and off Produces carbon dioxide and alcohol
flavors – alcohol scent or flavor May appear slimy, produce bubbles,
Prefer to grow in and on acidic food and have a pink discoloration
with low water activity Food spoiled by yeast should be
Aflatoxin – produced by molds and discarded.
can cause liver disease Found in jellies, jams, honeys, syrups,
Corn products, peanut products, and fruit juice
tree nuts
Throw away molded foods to prevent
illness
FDA recommends cutting away at
least one inch areas around moldy
hard cheeses