Question

food preservation in 8lines in simple words​

Answer 1

$\pink{Food \:preservation}$

Food is spoiled because microorganisms change it. There are five basic techniques which make food last longer:

Killing the microorganisms, or preventing them from multiplying

Contact of microoganisms with food is prevented

Certain additives prevent or slow the growth of microoganisms; this is often called curing

Usually several of the techniques are combined.

Methods of preserving food Edit

Different methods of preserving food in industrialized countries: food is heated and sealed in jars or cans

Common ways of preserving food are:

Heating the food or baking it (a hard corn-flour biscuit stays edible much longer than a bowl of fresh corn)

Pasteurization: Louis Pasteur found that simply heating food kills most microorganisms and makes it last longer. Liquids such as milk are commonly pasteurized. However, the heating has to be done precisely according to a procedure

Converting the food into a longer-lasting form (for example, fresh goat's milk can be converted into cheese or yogurt, which lasts much longer than fresh milk)

Pickling: putting vegetables, meat, or fish in salty water (brine). Salting the food: Covering it with dry salt

Putting the food in a jar with alcohol (ethanol) or vinegar, also called pickling

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