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.

Sun-drying is the oldest known method, now moderns techniques have been developed for dehydration of vegetables in this process, the products has better flavor, color, aroma, re-hydration acceptability, etc.

The dehydrated vegetables are used to manufacture instant ready to eat foods, fast foods, condiments & flavoring agent in sausages, pickles, chutneys, seasoning spices products etc.