What is freezing food?

Answer 1

Freeze-drying is a method for dehydrating food and other perishable products, like pharmaceuticals, medical supplies and biological samples. The material is first frozen and then placed in a low-pressure chamber so that the ice sublimates. It is the only practical way to preserve things by dehydration without applying heat (which would change the substance irreversibly). Foods dehydrated by freeze-drying can be sealed and safely stored at room temperature for years. When opened, freeze-dried foods can be reconstituted by simply adding water.

Answer 2

Because food spoilage is mainly caused by microorganisms and low temperatures can slow down or kill most microorganisms, freezing the food will keep them from growing out of control and thus keep the food healthy.

Answer 3

It slows to process of ripening which "locks in" the nutrients. Though even if the food is cooled or frozen it will still lose nutrients; albeit the process will just be slower. This mostly goes for fruit and vegetables.

Answer 4

To save food from going bad. Other options would be to can or dry the food...But freezing it is best on a nutritional level.

Answer 5

Bacteria can survive some conditions, but in a freezer they cannot survive as the conditions are extremely cold, hence making food last longer.

Answer 6

To freeze in fridge or make solid

Answer 7

So that the food is cold