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KMID : 0380620150470010006
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Korean Journal of Food Science and Technology
2015 Volume.47 No. 1 p.6 ~ p.12
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Production of Enzymatic Hydrolysate Including Water-soluble Fiber from Hemicellulose Fraction of Chinese Cabbage Waste
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Park Seo-Yeon
Yoon Kyung-Young
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Abstract
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This study was performed to determine the optimal hydrolysis conditions for the production of hydrolysates, including water-soluble dietary fiber from Chinese cabbage, with commercial enzymes. The optimal pH and temperature for hydrolysis of the hemicellulose fraction were pH 5.0 and 40oC, and optimal enzyme concentrations were 45 units and 21 units for Shearzyme plus and Viscozyme L, respectively. The yields of the hydrolysate including the water-soluble dietary fiber from the hemicellulose fraction by Shearzyme plus and Viscozyme L were 22.64 and 24.73%, respectively, after a 72 h reaction. The molecular weight distribution of alcohol-insoluble fiber was characterized by gel chromatography; degradation of hemicellulose increased with increasing reaction time. Our results indicate that the hemicellulose fraction was degraded to water-soluble dietary fiber by enzymatic hydrolysis, and its hydrolysate could be utilized as new watersoluble food materials.
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KEYWORD
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soluble dietary fiber, Chinese cabbage, optimal condition, enzymatic hydrolysis, recycling
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