Question

9. rancidity is a process used for spoiling of food materials like vegetables etc.when kept for long time in open. how can you prevent such process to proceed? give an example.

Answer 1

1. By addition of anti-oxidants : For slowing down the process.

2. Vacuum packing : No air is present.

3. Nitrogen Flushing : Air is replaced by nitrogen(in food packets).

4. Refrigeration : Process slows down due to lowering of temperature.

Answer 2

Answer:

Rancidity can be prevented by-

(a) Adding anti-oxidants to foods containing fats and oils.

(b) Packing fat and oil containing foods in nitrogen gas.

(c) Keping food in refrigerator.

(d) Storing food in air-tight containers.

(e) Storing foods away from light.