Enumerate any three ways by which oil acts as a natural preservative in picking.

Short/Brief Note

Three ways by which oil acts as a natural preservative in pickles are:

The oil added to the pickles prevents the pickles from spoiling by preventing air from getting into touch with them.
It produces a coating atop the pickle, reducing the amount of air available for bacterial growth.
Antimicrobial activity is also inhibited by oils.

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Household Methods of Preservation of Food

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2021-2022 (March)

Q 4.iv | 3 marks

How does pickling help to preserve fruits, vegetables and meat?

Assertion (A): Evaporating moisture from food stuff prevents growth of microorganisms.

Reason (R): Most microorganisms cannot grow without water.

Action of food enzymes '.are the major causes of ______.

Identify the picture

Identify the picture and name the type of preservation

Select the odd one

Oil is a natural preservative because

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Describe the method of preserving foods by canning.

Explain the procedure for preserving foods by the method of dehydration.

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Explain the procedure for preserving foods by the use of chemical preservatives.