FOOD EXAM Flashcards
Define denaturation
The physical changes that take place in a protein, when it is exposed to abnormal conditions in the environment.
Define Dextrinisation
Is when starch is exposed to dry heat, it is broken down resulting in change of colour.
Example: when dry heat is applied to bread and it is toasted, it changes to brown
Define Millard reaction
It is when you apply heat to a product and it changes to golden brown.
Eg meat
Define coagulation
Is when something thickens from a liquid to a solid.
Example: when chocolate is melted the put in the fridge or left out it hardens up.
Define Gelatinisation
Is when a liquid turns into a solid with heat and liquids thickens.
Example: white sauce
Define crystallisation
Occurs after substances separate from solutions or where a change from a liquid to a solid causes crystals
Example: toffee
Define Emulsification
Be beating mixture to break down protein in the egg
Define food poisoning
Illness caused by bacteria or other toxins in food
Symptoms of food poisoning?
Diarrhoea and vomiting
What is cross contamination
When a contaminant is transferred from on place to another. Usually when a micro-organism is moved from a raw food substance to a cooked or ready to eat food
Two ways in which cross contamination can occur in the kitchen
Using the same chopping board for both your meat and veggies
When using the same tea towels and equipment for all foods
What is the food standards code?
It regulates the activities of food business and food handlers to ensure the safety of all food being sold in Australia and New Zealand
What does FSANZ stand for
Food safety Australia New Zealand
What is the Vic food act of 1984?
To ensure that food is stored, prepared and cooked in a hygienic way to guarantee that food remains safe
Define food safety
Handling, preparation and storage of food in ways that prevent food illness.
Define food hygiene
To ensure that food is safe to consume and is of good keeping quality
Define personal hygiene
Involves practices performed by an individual to care for ones bodily health and well being, through cleanliness.
Two examples of food safety:
Keep cold food below 5 degrees
Keep hot food over 60 degrees
Two examples of food hygiene
Use clean equipment
Wipe down benches
Two examples of personal Hygiene
Hair tied back
Washing hands
Microbiological contamination
Is a small single-celled organism visible only through a microscope. It may me found in soil, air and water.
Example: bacteria
Physical contamination
When foreign objects are found in foods.
Examples: hair, fingernails, bandaids, jewellery
Chemical contamination
When toxic substances are found in foods
Example: detergents, sanitisers and disinfectants
What are Yeasts
Micro-Scopic single- celled organisms, that use sugar to grow and produce carbon
What are moulds
A type of fungus mould spore that carry in the air and settle to grow on surfaces
What is bacteria
A micro-scopic single celled organism that are widely found in soil and air
What is the the difference between food spoilage and food contamination
Food spoilage: when food ages the quality of food decreases, it becomes slimy, smelly or discoloured. It changes physically.
Food contamination: is the occurrence of chemical, physical and biological substances that make food unsafe or unsuitable for consumption.
What conditions do bacteria like to grow in
Temperatures between 5 and 60 degrees
What is the danger zone
The danger zone is any foods that have been sitting in temperatures between 5-60 degrees without being cooked.