FOOD PROCESSING AND PRESERVATION
FOOD PRESERVATION METHODS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Preserving
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Drying
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Salting
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Freezing
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Detailed explanation-1: -Drying is one of the most ancient food preservation techniques, which reduces water activity sufficiently to prevent bacterial growth.
Detailed explanation-2: -Drying. Drying or dehydration is the process of removing water from a solid or liquid food by means of evaporation. The purpose of drying is to obtain a solid product with sufficiently low water content. It is one of the oldest methods of food preservation [49].
Detailed explanation-3: -Heating, freeze drying, freeze concentration, and osmotic concentration methods are used to reduce water activity of foods.
Detailed explanation-4: -Solutes: Water activity is decreased by adding solutes such as salt or sugar (Ex: jams, cured meats). Freezing: Water activity is decreased by freezing (Ex: water is removed in the form of ice).