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Changes in chemical composition of Korean red ginseng (Panax ginseng C.A. Meyer) extract with alcohol extraction

Authors
Shin, K.-S.Oh, S.H.Kim, T.Y.Yoon, B.Park, S.S.Suh, H.J.
Issue Date
2008
Keywords
Extraction; Ginsenoside; Polyphenols; Red ginseng; Uronic acid
Citation
Journal of Food Science and Nutrition, v.13, no.3, pp 212 - 218
Pages
7
Indexed
SCOPUS
KCI
Journal Title
Journal of Food Science and Nutrition
Volume
13
Number
3
Start Page
212
End Page
218
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/125313
DOI
10.3746/jfn.2008.13.3.212
ISSN
1226-332X
Abstract
We extracted red ginseng with various alcohol concentrations and evaluated total carbohydrate, uronic acid, polyphenols compounds and ginsenoside contents, and yields of alcohol extract. The water extraction (0% alcohol extraction) showed a high level of total carbohydrate content. 10% and 20% alcohol extraction showed the highest uronic acid contents (7,978.8 and 7,872.7 μg/mL of extract, respectively). The efficiency order of the red ginseng extract (RGE) preparations in liberating polyphenols was: 0̃50% alcohol= 60% alcohol > 70̃90% alcohol. Solid contents in RGE were decreased with increased alcohol concentration; the same tendency as with the results of total carbohydrate content. Total ginsenoside contents in 20̃50% alcohol extracts showed similar levels (42,962.9̃47,930.8 μg/mL of extract). Water extraction showed the lowest ginsenoside content (14,509.4 μg/mL of extract). The ginsenoside contents at above 60% alcohol were decreased with increased alcohol concentration. Generally, ginsenoside (Rg2, Rg1, Rf, Re, Rd, Rb2, Rc and Rb1) contents were increased with increased alcohol concentrations. However, Rg3 content was decreased with increases in alcohol concentration. Copyright © 2007 KFN.
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