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KMID : 1007520110200020549
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Food Science and Biotechnology
2011 Volume.20 No. 2 p.549 ~ p.553
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Dehydration Characteristics of Maesaengi (Capsosiphon fulvescens) in Hot-air Drying
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Son Seok-Min
Rhim Jong-Whan
Lee Jun-Ho
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Abstract
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Maesaengi (Capsosiphon fulvescens) was dehydrated in a single layer at drying air temperatures ranging from 50-80oC in a laboratory scale convective dryer with an air velocity of 0.26 m/s. The effect of drying air temperature on the drying kinetic characteristics was determined. Maesaengi was dried to equilibrium moisture content within 200-600 min under these drying conditions. Drying rate curves of maesaengi showed an initial short period of a constant drying rate, followed by a falling drying rate period. The moisture decrease in the sample during dehydration was well described by the zero-order kinetic model. An Arrhenius-type equation was used to test the effect of temperature on drying rate according to an activation energy value of 29.36 kJ/mol.
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KEYWORD
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maesaengi, Capsosiphon fulvescens, drying kinetics, modeling, thin-layer drying, hot air
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