The term biological products has been used throughout this chapter because products such as grains, fruits, and vegetables are living organisms. Because they are alive, there are minimum requirements for moisture, temperature, and air to maintain their viability; but the life of the product can be extended if the temperature or moisture or air is modified during storage. The challenge for managers of many such products is to extend the storage life of the product without damaging its viability, color, taste, or texture. Recommendations for optimum environments for the storage of biological products can be obtained from the extension service or any department of agricultural engineering.
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