Question

What is canning ? Why it is useful ?​

Answer 1

Answer:

Canning is an important method of preservation of food in general, and fruits and vegetables in particular, because of the extension of shelf-life it lends to products. It involves a heating process much more severe than blanching or pasteurization.

Answer 2

canning is a method of preserving food in which the food contents are processed and sealed in an airtight container.

the seal then protects the food from new microorganisms entering and from oxidation from the air.

hope this will help you.

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