Bioconversion of ginsenoside Rb1 into compound K by Leuconostoc citreum LH1 isolated from kimchi
Braz. j. microbiol
;
42(3): 1227-1237, July-Sept. 2011. ilus, tab
Article
Dans Anglais
| LILACS
| ID: lil-607559
ABSTRACT
About 40 different types of ginsenoside (ginseng saponin), a major pharmacological component of ginseng, have been identified along with their physiological activities. Among these, compound K has been reported to prevent the development of and the metastasis of cancer by blocking the formation of tumors and suppressing the invasion of cancerous cells. In this study, ginsenoside Rb1 was converted into compound K via interaction with the enzyme secreted by ¥â-glucosidase active bacteria, Leuconostoc citreum LH1, extracted from kimchi. The optimum time for the conversion of Rb1 to compound K was about 72 hrs at a constant pH of 6.0 and an optimum temperature of about 30¨¬C. Under optimal conditions, ginsenoside Rb1 was decomposed and converted into compound K by 72 hrs post-reaction (99 percent). Both TLC and HPLC were used to analyze the enzymatic reaction. Ginsenoside Rb1 was consecutively converted to ginsenoside Rd, F2, and compound K via the hydrolyses of 20-C ¥â-(1 ¡æ 6)-glucoside, 3-C ¥â-(1 ¡æ 2)glucoside, and 3-C ¥â-glucose of ginsenoside Rb1.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Techniques in vitro
/
Chromatographie
/
Enzymes de réparation de l'ADN
/
Panax
/
Leuconostoc
langue:
Anglais
Texte intégral:
Braz. j. microbiol
Thème du journal:
Microbiologie
Année:
2011
Type:
Article
Pays d'affiliation:
Corée du Sud
Institution/Pays d'affiliation:
Kyung Hee University/KR
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