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KMID : 0380619830150020136
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Korean Journal of Food Science and Technology
1983 Volume.15 No. 2 p.136 ~ p.140
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A Kinetic Study on the Hydration Process of Barley Kernels with Various Polishing Yields
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목철균/Mok, Chul Kyoon
남영중/민병용/이현유/Nam, Young Jung/Min, Byong Yong/Lee, Hyun Yu
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Abstract
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The hydration characteristics of barley kernels with various polishing yields were investigated at temperatures of 20-60℃ and their sorption kinetics were studied. The moisture gain in initial stage of hydration was directly proportional to square root of hydration time and there was a break point at the moisture gain of 0.45-0.55g H₂ O/g solid. The hydration rate was great in order of polishing yield of 50, 70, 95, 90 and 100%, and increased with increasing hydration temperature. The diffusivity of water into barley kernels followed Arrhenius equation, and the activation energies in hydration reaction of polished barley were ranged from 6.9 to 9.5 Kcal/mole and that of non-polished one was 11.6Kcal/mole.
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