Spoilage and wastage of food and food preservation details
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Some methods of preservation are:
Freezing. Food kept in a refrigerator remains fresh for some days.
Boiling. By this method, we can preserve food for a short period of time.
Salting. We can add salt to preserve pickles and fish.
Sweetening. Excess sugar in food also acts as a preservative.
Dehydration.
Canning.
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