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http://dx.doi.org/10.3746/jkfn.2007.36.11.1482

Antioxidant Activity of Ginseng Extracts Prepared by Enzyme and Heat Treatment  

Kim, Young-Chan (Korea Food Research Institute)
Cho, Chang-Won (Korea Food Research Institute)
Rhee, Young-Kyung (Korea Food Research Institute)
Yoo, Kyung-Mi (Division of Bioscience and Biotechnology, Konkuk University)
Rho, Jeong-Hae (Korea Food Research Institute)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.36, no.11, 2007 , pp. 1482-1485 More about this Journal
Abstract
In this study, extraction yield of ginseng and contents of phenolic compounds were increased through enzyme and heat treatment, and antioxidant activities of each treatment group were investigated. In the case of enzyme treatment groups, the extraction yields showed remarkable difference: pectinase (76.0%)> cellulase (44.7%)> ${\alpha}-amylase$ (43.1%)> protease (34.3%). Heat treatment groups did not show much difference in extraction yields $(51.1{\sim}53.1%)$ except for $90^{\circ}C-treated$ group (48.7%). Pectinase-treated group (2.21%) and $90^{\circ}C$ heat treatment group (2.34%) showed the highest total phenol contents. DPPH radical scavenging activities of the solvent-treated, enzyme-treated and heat-treated extracts were $12.3{\sim}33.2%$, $29.7{\sim}40.3%$ and $57.8{\sim}75.2%$, respectively, at 100 mg/mL concentration. The pectinase-treated extract exhibited the greatest ABTS radical scavenging activity (60%), followed by $150^{\circ}C$, $ 120^{\circ}C$, and $90^{\circ}C-treated$ groups.
Keywords
Korean ginseng; antioxidant activity; enzyme treatment; heat treatment;
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Times Cited By KSCI : 6  (Citation Analysis)
Times Cited By SCOPUS : 6
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