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Physicochemical properties and composition of ginsenosides in red ginseng extract as revealed by subcritical water extraction

Title
Physicochemical properties and composition of ginsenosides in red ginseng extract as revealed by subcritical water extraction
Authors
Lee J.-M.Ko M.-J.Chung M.-S.
Ewha Authors
정명수
SCOPUS Author ID
정명수scopus
Issue Date
2015
Journal Title
Korean Journal of Food Science and Technology
ISSN
0367-6293JCR Link
Citation
vol. 47, no. 6, pp. 757 - 764
Keywords
Ginsenoside Rg3Ginsenoside rh1Less-polar ginsenosidesRed ginsengSubcritical water extraction (SWE)
Publisher
Korean Society of Food Science and Technology
Indexed
SCOPUS; KCI scopus
Abstract
Red ginseng was treated by subcritical water extraction (SWE) whose two parameters were the extraction temperature (105-150oC) and time (5-20 min) under a high pressure. The oBrix value, solid content, color difference, and turbidity of the red ginseng extract increased with increasing extraction time and temperature, while the pH decreased. The total concentration of ginsenosides in the red ginseng extract was maximal at 120oC and 20 min. The concentrations of ginsenosides Rg3 and Rh1 were maximal at 150oC and 15 min. The concentrations of Rg3 and Rh1 were respectively 3.5- 5 times and 2-2.5 times higher than those treated by conventional extraction methods with hot water, ethanol, and methanol. SWE is a particularly effective method for the selective extraction of less-polar ginsenosides such as Rg3 which is well known to exert strong anticancer effects.
DOI
10.9721/KJFST.2015.47.6.757
Appears in Collections:
엘텍공과대학 > 식품공학전공 > Journal papers
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