Food spoilage and hygiene：练习题

When storing food in a domestic refrigerator, what is the recommended temperature range to slow down the growth of bacteria?

Why should cooked food be stored on the top shelf of a refrigerator while raw meat is stored on the bottom shelf?

When shopping in markets, which practice indicates a high standard of food hygiene for high-risk foods like raw fish?

To maintain good personal hygiene, what is the most important action a food handler should take after touching their face or hair?

A consumer notices a fuzzy, green growth on the surface of a loaf of bread. Which type of microorganism is likely responsible for this spoilage?

Discuss three critical hygiene measures that food vendors in shops and markets must implement to prevent the cross-contamination of raw poultry with ready-to-eat foods.

Maintaining high standards of hygiene and understanding the causes of food spoilage are critical to preventing foodborne illnesses.
(a) Identify and explain four environmental conditions that must be present for the rapid multiplication of food-poisoning bacteria.
(b) A refrigerator is commonly used for food storage at home. Explain the scientific principle of how refrigeration at \(0^{\circ}C\) to \(5^{\circ}C\) helps to preserve food and list two specific hygiene rules that should be followed when storing raw and cooked foods together in the same unit.
(c) Describe the role of enzymes in the spoilage of fresh fruit and suggest one method to deactivate these enzymes during food preparation.