Question

Define food preservation and food poisoning

Answer 1

Food preservation prevents the growth of microorganisms (such as yeasts), or other microorganisms (although some methods work by introducing benign bacteria or fungi to the food), as well as slowing the oxidation of fats that cause rancidity.
Food poisoning is a general term for health problems arising from eating contaminated food. Food may be contaminated by bacteria, viruses, environmental toxins, or toxins present within the food itself, such as the poisons in some mushrooms or certain seafood. 

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Answer 2

Answer:

Food poisoning, also called food borne illness, is illness caused by eating contaminated food. ... Salt is mixed with food in order to prevent biodegradation under normal conditions. Treatment with salt for preservation purposes is called curing. For example, fish, pickles etc are preserved using salting.

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