Food Tech - Food Contamination

Question 1

3 types of contamination

Answer 1

1. physical contamination
2. chemical contamination
3. bacterial contamination

Question 2

physical contamination

Answer 2

• soil from ground when harvesting
• bolt from a processing plant when packaging
• hair from a cook during kitchen

Question 3

chemical contamination

Answer 3

• chemicals from the farm
• cleaning product in manufacturing plant
• fly spray in kitchen

Question 4

bacterial contamination

Answer 4

• autolysis => self destruction (enzymes in food)
• microbial spoilage => growth of bacteria, yeast and mould

Question 5

desired micro-bacterial changes - 3 examples

Answer 5

• bacteria in yoghurt
• mould in chesses
• yeast in bread

Question 6

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