Question

explain the term rancidity? name the type of chemical reaction responsible and how to prevented? Class:10TH.......Subject:Science......Chemistry...... chapter:1......​

Answer 1

a) The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called rancidity. It spoils the food materials prepared in fats and oils which have been kept for a considerable time and makes them unfit for eating.

b) Oxidation is responsible for causing rancidity.

c) The various methods for preventing or retarding rancidity of food are:

1) Rancidity can be prevented by adding anti-oxidants to foods containing fats and oils .

2) It can be prevented by packaging fat and oil-containing foods in nitrogen gas.

3) It can be retarded by keeping food in a refrigerator.

4) It can be prevented by storing food in air-tight containers.

5) Storing foods away from light can also prevent rancidity.