Food science

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State 4 things food scientists do
1. Improve quality of food crops and animals. 2. Contol pests and weeds. 3. Conserve soil and water. 4. Genetically modify crops
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State 4 areas food scientists may work in
1. Food production. 2. Research. 3. Sport nutrition. 4. Food analysis
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What are FSA and DEFRA responsible for?
The safe production of food
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Name one bacteria which causes food poisoning
Campylobacter/Salmonella/E.coli
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What 4 things do bacteria need to grow
1. Moisture. 2. Warmth. 3. Food. 4. Oxygen
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How do you prevent growth of bacteria on dishcloths?
Dry them out - No moisture for the microbes to grow
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3 symptoms of food poisoning
1. Vomiting. 2. Diarrhoea. 3. Stomach pains
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What is food hygeine concerned with?
Preventing food poisoning
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State 6 ways that food preperation areas are kept bacteria free
1. Good personal hygeine e.g washing hands. 2. Wearing protective clothing. 3. Use of disinfectants on surfaces. 4. Using detergant to wash up. 5. Correct disposal of waste. 6. Contol of pests
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What is the aseptic technique ?
A technique used when collecting bacteria to make sure there is no cross contamination
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What technique do you use to count bacteria in food?
Serial dilution
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How to you calculate the number of bacteria /cm3 of solution
Number of colonie X Dilution of sample
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What technique do you use to identify the type of bacteria present?
Streak plates
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Name 7 ways to prevent the growth of bacteria (preservation)
1. Refrigeration 2. Freezing 3. Pickling 4. Drying. 5. Salting 6. Heating
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How does Refridgeration work?
Slows down microbial growth
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How does Freezing work?
Freezing works by stoping microbial growth
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How does Drying work?
Removes water so bacteria dies
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How does Salting work?
Salting dries out the bacteria so it dies
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How does Pickling work?
Acidic pH kills most microbes
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What food do we use bacteria to make?
Yogurt and cheese
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What food do we use yeast to make?
Bread, wine, beer
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What substance is yogurt and cheese produced from
Milk
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What bacteria does yogurt make to make it sour
Lactic acid
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Which process and which gas causes bread dough to rise
Process= Fermentation Gas= Carbon dioxied
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Which process do microbes use to produce bread and wine
Fermentation
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What substance is beer made from
Maltose (Sugar) from grains
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What substance is wine made from
Sugar from grapes
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Other cards in this set

Card 2

Front

State 4 areas food scientists may work in

Back

1. Food production. 2. Research. 3. Sport nutrition. 4. Food analysis

Card 3

Front

What are FSA and DEFRA responsible for?

Back

Preview of the front of card 3

Card 4

Front

Name one bacteria which causes food poisoning

Back

Preview of the front of card 4

Card 5

Front

What 4 things do bacteria need to grow

Back

Preview of the front of card 5
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