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The Conversion of Ginsenosides by Extrusion Molding  

Ryu, Jae-Hyung (Department of Molecular Biotechnology, Kangwon National University)
Li, Chun-Ying (Department of Molecular Biotechnology, Kangwon National University)
Ahn, Moon-Sub (Gangwon Provincial Agricultural Research & Extension Services)
Kim, Jang-Won (Department of Molecular Biotechnology, Kangwon National University)
Kang, Wie-Soo (Department of Agricultural Engineering, Kangwon National University)
Rhee, Hae-Ik (Department of Molecular Biotechnology, Kangwon National University)
Publication Information
Applied Biological Chemistry / v.51, no.2, 2008 , pp. 114-118 More about this Journal
Abstract
Ginseng treated with several treatment conditions of various acids to search hydrolysates on the basis of increased biological activity and modified structure. In the result of acid treatment, the conversion rate of ginsenoside Rg3, Rk1 and Rg5 was highest when ginseng treated with citric acid. After added citric acid to ginseng extract, boiled at l00$^{\circ}C$ for 1 hour and add enzyme, which is examined change by time. It compared with group which did not treated acid. Two groups became difference according to enzyme but the generation rate of ginsenoside Rg3, Rk1 and Rg5 did not show difference greatly. Also, the generation rate of ginsenoside Rg3, Rk1 and Rg5 by time passes did not show difference. The generation rate of ginsenoside Rg3, Rk1 and Rg5 increased when increased acid concentration, temperature and time. We did exclusion molding to shorten treatment time. In the result of ginseng treated with citric acid of various concentrations at various temperatures as time passes by extrusion molding, the generation rate of ginsenoside Rg3, Rk1 and Rg5 was highest when ginseng treated with 3% citric acid at l60$^{\circ}C$ for 20 minutes. In addition, total saponin amount of ginseng treated with 3% citric acid at 160$^{\circ}C$ for 20 minutes was about 11% higher than ginseng heated at 120$^{\circ}C$ for 3 hours. These results indicated that our exclusion molding process more effective, compared to traditional red ginseng manufacturing process.
Keywords
Citric acid; Extrusion molding; Ginsenoside;
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