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KMID : 0352720090330040343
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Journal of Ginseng Research
2009 Volume.33 No. 4 p.343 ~ p.348
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Characteristics of Acid Pre-treated Red Ginseng and Its Decoction
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Kim Mi-Hyun
Lee Young-Chul
Choi Sang-Yoon
Cho Chang-Won
Rho Jeong-Hae
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Abstract
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This study was conducted to produce a new red ginseng by steaming ginseng using a new pre-treatment method, so as to develop ginseng products with improved flavor and thereby expand ginseng’s consumer base. The color parameters (Hunter value), free sugar contents, and ginsenoside contents of the powder from the dried red ginseng, and the sensory test of the semi-dried red ginseng and the decoction from the dried red ginseng, were measured to investigate the effect of acid (ascorbic acid or citric acid) impregnation pre-treatment on red ginseng. The powder from the acid-pretreated red ginseng became lighter and more yellow than the red ginseng that was not pre-treated, but the redness (avalue) of the powder from the acid-pre-treated red ginseng increased. The ginsenoside contents of Rg₂+Rh₁ and Rg₃ increased with the acid treatment. There was a significant difference in the color and sweetness of the semi-dried acidtreated and non-treated red ginsengs in the sensory test. As the results of the sensory test were expressed in the hedonic scale, however, there were significant differences in the degrees of bitterness, astringency, sourness, odor, and color of the red ginseng decollation. Especially, the acid-treated red ginseng extract tasted less bitter, which shows the potential of new red ginseng products with improved ginseng flavor.
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KEYWORD
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acid, red ginseng, ascorbic acid, citric acid, ginsenoside
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