Define dehydration. Explain theories of drying and dehydration. What are the advantages of dehydrated fruits and vegetables? Enlist common types of driers used for drying of fruits and vegetables.

Dehydration in Post-Harvest Management of Fruits and Vegetables

Definition of Dehydration:

Dehydration, in the context of post-harvest management of fruits and vegetables, refers to the process of removing moisture from produce to extend its shelf life, reduce weight and volume, and preserve nutritional value. It involves the reduction of water content to a level where microbial growth is inhibited, thereby preventing spoilage. Dehydrated fruits and vegetables retain much of their original flavor, color, and nutritional content, making them valuable commodities in the food industry.

Theories of Drying and Dehydration:

The process of drying and dehydration involves several theories and principles, each contributing to the overall effectiveness of the process:

1. Diffusion Theory: This theory explains the movement of moisture from the interior of the produce to its surface, where it evaporates into the surrounding air. Diffusion occurs due to the concentration gradient, with moisture _________ ____ _______ ______ ________ _______ ______ ___ _____.
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