Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.
KMID : 1098420080160030155
Korean Journal of Medicinal Crop Science
2008 Volume.16 No. 3 p.155 ~ p.160
Transformation of Ginsenoside Rd to Ginsenoside F2 by Enzymes of Leuconostoc fallax LH3
Quan Lin-Hu

Kim Myung-Kyum
Yang Deok-Chun
Park Min-Ju
Cheng Le-Qin
Na Ju-Ryun
Kim Ho-Bin
Kim Se-Hwa
Abstract
Ginsenosides have been regarded as the principal components, responsible for the pharmacological and biological activities of ginseng. Absorption of major ginsenosides at the gastrointestinal tract was extremely low, when ginseng taken orally. In order to improve the absorption and bioavailability, transformation of major ginsenosides into more active and valuable minor ginsenoside is much required. In this present study, We isolated a lactic acid bacteria Leuconostoc fallax LH3 from the Korean fermented food Kimchi, which have higher -glucosidase activity. Using the ethanol precipitated curd enzyme of Leuconostoc fallax LH3, we investigated the biotransformation of ginsenoside Rd at different experimental condition to increase transformation. The maximum convertion was supported at 30 and decreased when temperatures increased. In order to optimize the effect of pH, the curd enzyme was mixed 20 mM sodium phosphate buffer (pH 3.5 to pH 8.0). Ginsenoside Rd was almost hydrolyzed between pH 7.0 and pH 9.0, but not hydrolyzed above pH 10.0. Ginsenoside Rd was hydrolyzed after 24 hrs incubation, but whereas the ginsenoside F2 was appeared from 36 hrs, and all ginsenoside Rd was transformed to F2 after the 60 hrs incubation. Based on this study, the curd enzyme of Leuconostoc fallax LH3 transformed the ginsenoside Rd at the 30 and the pH optimum of 7.0 to 9.0 after the 60 hrs incubation time.
KEYWORD
Leuconostoc fallax LH3, Ginsenoside Rd, F2, Transformation
FullTexts / Linksout information
 
Listed journal information
ÇмúÁøÈïÀç´Ü(KCI)