Question

State any two ways by which food can be preserved

Answer 1

Among the oldest methods of preservation are drying, refrigeration, and fermentation. Modern methods include canning, pasteurization, freezing, irradiation, and the addition of chemicals.

Answer 2

Canning, Pasteurization are the two ways of food preservation techniques are discussed below:

Explanation:

Two of the food preservation methods are:

Canning is heating food sealed in a glass to destroy any micro organisms that can damage the food. Appropriate conservation techniques stop this destruction by heating food for a while and removing these unwanted micro organisms.

Pasteurization is the important process, in which fresh food is briefly heated to high temperatures to kill bacteria and then rapidly cooled before it carries supermarkets.

One of the oldest techniques of food preservation is:

Drying, freezing and fermenting

Some of the techniques currently used for food preservation are:

Preservation, pasteurization, freezing, radiation

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