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KMID : 1007520100190041083
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Food Science and Biotechnology
2010 Volume.19 No. 4 p.1083 ~ p.1087
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Rehydration Kinetics of Vacuum-dried Salicornia herbacea
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Lee Jun-Ho
Rhim Jong-Whan
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Abstract
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Rehydration kinetics of Salicornia herbacea prepared by vacuum drying at 70 or 80oC was studied at water temperature of 30, 60, and 90oC, respectively. A 2- term 5-parameter exponential decay model was used to describe the rehydration process. The rehydration times for the S. herbacea to reach maximum water absorption (tM) at each rehydration condition varied depending on the rehydration temperature and the drying air temperature. The inverse of the time (1/tM) showed linear temperature dependency as described by the Arrhenius-type relationship. The activation energy values for the S. herbacea dried at 70 and 80oC were 17.66 and 21.06 kJ/mol, respectively.
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KEYWORD
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Salicornia herbacea, rehydration, kinetics, Arrhenius relationship
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