Question

What is rancidity?What kind of substances are used to prevent rancidity?Explain any three methods to prevent rancidity.

Answer 1

Spoiling of oil in food after undergoing oxidation on exposure to air is called rancidity.

Methods to prevent rancidity:-
1) storing in reduced temperatures
2) storing in air tight containers
3) flushing food with nitrogen
4) adding antioxidants in food

Answer 2

Food containing oil and fats is left for a long time, stale food develops a bad taste or smell. This is because the oils and fats present gets oxidized with the passage of time. The oxidation of oils and fats in our food resulting in a bad smell is called rancidity.
Methods for preventing rancidity -
1) By adding antioxidants
2) by vacuum packing
3) by filling nitrogen