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What is Food Preservation
It means preventing food from spoiling and getting rotten
How to Preserve Food by Different Methods?
It is done by adding preservatives like salt,sugar etc to food
Let’s see different methods
Preservation by Common Salt
Common salt is used on Meat and Fish to prevent growth of bacterias.
Common salt is also used to preserve fruits such as Raw Mangoes, Lemon and Amla.
Preservation by Sugar
It is used in case of jam,squash and jellies
Fruits that are preserved in the form of jam and jellies are Apple,Mango,Strawberry,Guava,Orange etc
Sugar reduces moisture,so bacteria cannot grow
Preservation by Oil and Vinegar
It is used in case of pickles to preserve fruits such as Raw Mangoes, Lemon
It also prevent growth of bacteria
Heat Treatment
Milk is boiled to kill microorganisms so that milk can last longer
Cold Treatment
Food is stored in refrigerator.This prevents growth of microorganisms as the cannot grow in cold temperature
Storing and Packing in Air Tight Containers
This is done in air tight containers.so Microorganisms cannot reach food through air
What are preservatives?
Substance which is used to preserve food(prevent food from getting spoiled) is called preservatives
Example Salt, Sugar, Oil, Vinegar
