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http://dx.doi.org/10.3746/jkfn.2004.33.4.741

Drying Rate and Physicochemical Characteristics of Dried Ginseng Root at Different Temperature  

하대철 (뉴트라테크 (주), 공주대학교 한약재연구센터ㆍ식품공학과)
이종원 (KT&G 중앙연구소)
도재호 (KT&G 중앙연구소)
박채규 (KT&G 중앙연구소)
류기형 (공주대학교 한약재연구센터ㆍ식품공학과)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.33, no.4, 2004 , pp. 741-746 More about this Journal
Abstract
Drying of raw ginseng root down to 35% moisture content required for extrusion process. There were two kinds of pre-treatments of raw ginseng root which were chopping and whole-root ginseng before frying at 80, 100 and 12$0^{\circ}C$. Drying rate and physicochemical properties of dried ginseng were evaluated to determine optimum drying temperature for extrusion process. Drying time at 8$0^{\circ}C$ to decrease to 35% moisture was 6.5 hr and ginsenoside content in dried ginseng at 8$0^{\circ}C$ was lower than that of dried ginseng at 100 and 12$0^{\circ}C$. Drying time at 100 and 12$0^{\circ}C$ to decrease to 35% moisture was 5.5 and 3.5 hr and redness of dried ginseng powder was 5.20 and 7.23 respectively. Browness and redness of dried ginseng extract from 75% ethylene were significantly increased with the increase in drying temperature. Ginsenosides Rb1, Rb2, Rc, Rd, Rg1 and total saponin were also increased with the increase in drying temperature from 8$0^{\circ}C$ to 10$0^{\circ}C$, however, those were not significantly different with drying temperature at 100 and 12$0^{\circ}C$. Drying temperature for extrusion process can be optimal at 10$0^{\circ}C$.
Keywords
ginseng; drying rate; ginsenoside;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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