วันอังคารที่ 15 กุมภาพันธ์ พ.ศ. 2554

Solar Dehydration

The process of dehydration in foodstuffs is simply that of reducing the internal water content and in certain instances the intracellular water content of the food. Effectively when heat is applied to the food it induces evaporation of the water, which results in the water within the food first migrating to the periphery of the food, and then undergoing a phase change from liquid to gas, in other words water to water vapor. The reduction in water content results in reduced water activity with a consequent reduced growth of microorganisms.

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