enumerate the different methods in preserving food
Salting, Pickling etc
Pasteurization
Please study your text book. There are many methods or curing , or preserving, food.
Methods of preserving food include smoking and drying. Canning is another common method of food preservation. Pickling is one of the oldest forms of food preservation.
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because food is so important to survival foo preservation is one of the oldost methods.
It was mostly caned food and dehydrated food.
why is there need for preserving food ? explain
It does not take the moisture out of food therefor not preserving it.
The principles are to halt ripening, and prevent the growth of fungi and bacteria on the food. They are preserved by drying, canning, irradiating and freezing.
by packed in air tight container. away from light. fiushed in nitrogen gas &packed them in container