Enhancement of Ginsenoside Rgl and Rg5 Contents in an Extract of Wood-cultivated Ginseng by Lactobacillus plantarum

摘要

Twelve lactic acid bacteria harboring a-rhamnosidase (EC 3.2.1.40) activity were isolated from traditional Korean foods. The 6 strains (Weissella confuse [n -1], Lactobacillus pentosus [n = 1], and Lactobacillus plantarum [n = 4]) with the highest rhamnosidase activity were selected for bioconversion of an extract of wood-cultivated ginseng. The L. plantarum MBE/L2990 strain increased ginsenoside content (0.58 mg for Rgl and 0.24 mg for Rg5) and showed higher bioconversion activity than the control strain L. plantarum KCTC21004 (56% and 42% increase for Rgl and Rg5, respectively). L. plantarum MBE/L2990 was deposited at the Korean Collection for Type Cultures as Lactobacillus plantarum KCTC18529P.