Question

What is pasteurisation? mention two other ways by which we try to prevent food from spoiling?

Answer 1

pasteurised milk is prepared by heating milk to about 70°c for 15 to 30 seconds and then suddenly cooling it . microbes get killed due to sudden heating and cooling. the milk can be then stored.the technique was developed by Louis pasteur and is called pasteurization. the milk stays fresh for several months. the other ways by which we can try to prevent food for spoiling are :- cooling ,salting , Sweetening, dehydration ,canning and chemical preservative.

Answer 2

pasteurization is a method in which liquid most commonly milk is boiled at high temperature and then suddenly cool down to kill the germs in it. some other ways of food preservation are freezing, canning, smoking, and dehydration.