Preservation of food

Question 1 What is meant by food preservation?

Question 2 Name methods of preserving food?

Preservation of food

The food material like milk,fruits,vegetables,meat,fish and cooked food get spoiled easily.This is because they contain a lot of water due to which the food-spoiling micro-organism can grow in them easily.

The process in which the food materials are given a suitable physical or chemical treatment to prevent their spoilage is called food preservation.

Methods of preserving food are:

1)Sun-drying or dehydration

2)Heating

3)Cooling

4)Deep freezing

5)Addition of common salt

6)Addition of sugar

7)Addition of mustard oil and vinegar

8)Use of special chemical preservatives

9)Pasteurisation

10)Packing food in air-tight packets

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