FOOD TECHNOLOGY

Detailed explanation-1: -dehydration, in food processing, means by which many types of food can be preserved for indefinite periods by extracting the moisture, thereby inhibiting the growth of microorganisms. Dehydration is one of the oldest methods of food preservation and was used by prehistoric peoples in sun-drying seeds.

Detailed explanation-2: -Food preservation methods such as drying, freezing and adding salt or sugar work by lowering the available moisture in foods.

Detailed explanation-3: -(opens in new window)Dehydration methods. Foods can be dehydrated by various means: the sun, a conventional oven, an electric dehydrator, a microwave oven (for herbs only), air drying and solar drying. Dehydration, like other preservation methods, requires energy.

Detailed explanation-4: -Drying or dehydration is, by definition, the removal of water by evaporation, from a solid or liquid food, with the purpose of obtaining a solid product sufficiently low in water content.