State the principle behind pickling as a method of preservation.

Short Answer

Pickling as a preservation method is employed by creating a highly acidic environment in the brine using vinegar and a high salt concentration.
This mixture inhibits the growth of hazardous microbes such as bacteria, yeasts, and moulds, allowing the food to be stored for an extended time without spoiling.

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Household Methods of Preservation of Food

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Chapter 9: Storage and Preservation of Food - EXERCISES [Page 141]

Chapter 9 Storage and Preservation of Food
EXERCISES | Q 10. | Page 141

Identify which is not an example of a sundried product:

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

Why is it important to preserve meat and its products properly?

Assertion [A]: Green leafy vegetables kept in the refrigerator go limp and soggy.

Reason [R]: All green leafy vegetables are rich in high content of water.

State True or False:

Eggs should be washed and preserved in a cool dry place.

The shelf life of food products is affected due to the factors ______.

Identify the picture.

Name the type method of preservation technique by observing the picture.

Name two important cherical preservatives used for food preservation.

What are the changes that take place in food items due to freezing?

How does sugar help in food preservation? Give any two examples of food items preserved by this method.