title: Seasonal variation of saponins, sucurose and monosaccharides in cultivated ginseng roots.
abstract: Yield of methanolic extract of fresh roots of Ginseng harvested in winter was found to be more than two-fold grater than from roots collected in summer; this remarkable increase is mainly due to the large increase of sucrose in roots in winter. On the other hand, biologically active dammarane-saponins in the roots increase in summer. These results indicate that roots should be harvested in summer for the production of high quality Ginseng extracts.
authors.affiliation: Samnam Chemical Laboratories, Seoul, Korea.
authors.forename: S K
authors.initials: SK
authors.lastname: Kim
authors.forename: I
authors.initials: I
authors.lastname: Sakamoto
authors.forename: K
authors.initials: K
authors.lastname: Morimoto
authors.forename: M
authors.initials: M
authors.lastname: Sakata
authors.forename: K K
authors.initials: KK
authors.lastname: Yamasaki
authors.forename: O
authors.initials: O
authors.lastname: Tanaka