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.
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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.
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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.
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