Question

what are ways of preserving food????​

Answer 1

Chemical Methods

we add salt or acid preservative to pickles to prevent the attack of microbes.

Preservation by sugar

sugar reduce the moisture content which inhibit the growth of bacteria with spoilt food.

Preservation by oil and vinegar

use of oil and vinegar prevent spoilage of pickles because bacteria cannot live in such an environment.

heat and cold treatment

we keep our food in the refrigerator, low temperature inhibit the growth of microbes.

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