Write a short note : Common methods of food preservation?
Answers
Explanation:
Among the oldest methods of preservation are drying, refrigeration, and fermentation. Modern methods include canning, pasteurization, freezing, irradiation, and the addition of chemicals. Advances in packaging materials have played an important role in modern food preservation
Food preservation is the process through which the food materials are given a special physical or chemical treatment to prevent their spoilage.
Some methods of food preservation are:
- By sun drying or dehydration
- By heating
- By cooling
- By deep freezing
- By common salt or curing
- By sugar
- By mustard oil and vinegar
- By using special chemicals such as Sodium metabisulphite, Sodium benzoate and Citric acid.
- By pasteurization
- By packing food in air-tight packets
Why is it necessary to preserve food?
It is necessary to preserve food so that it doesn't get spoilt by the action of microorganisms and food can be edible for a longer period of time.
What will happen if we don't preserve food?
If we don't preserve food, then microbes will spoil the uncovered food items or the leftovers. When the microbes sit on the uncovered food items, then they release certain chemicals which are toxic in nature. And if we consume these food items, then it leads to food poisoning.