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KMID : 1007519940030030181
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Food Science and Biotechnology
1994 Volume.3 No. 3 p.181 ~ p.188
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Simplified Thermal Modeling of Microwave Power Absorption of Plain Yogurt during Microwave Vacuum Drying
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Kim Suk-Shin
Santi R. Bhowmik
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Abstract
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Microwave energy abosrption of yogurt of thin slab shape was determined calorimetrically and expressed as a function of radiation time and moisture content. Power absorption of yogurt showed a quadretic relationship with both radiation time and moisture content. The quadratic model equation was used to calculate the internal heat generation and temperature/moisture content changes of yogurt during microwave vacuum drying at 30℃ to 50℃. The overall calculated temperature/moisture content curves closely simulated the experimental values expcept those in the initial stage of drying.
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