Abstract
Relative and total amount of saponins in Panax ginseng, Panax quinquefolius, Aralia mandshurica and Eleutherococcus senticosus were determined by thin-layer chromatography and by a spectrophotometric method. The ginsenoside Rg! was present in American ginseng. Aralia and Eleutherococcus did not contain diol- and triol-type ginsenosides. Low concentrations of ginsenosides were found in Oriental red ginsengs (1.4–2.7%). Orally administered Araliaceae saponin extracts did not affect plasma lactic acid, glucagon, insulin or liver glycogen levels in exercised rats and did not prolong their swimming time. Plasma glucose levels in resting rats were decreased by saponin extracts of Canadian white, American red, Sanchi, Aralia, Eleutherococcus, Korean red and Shiu-Chi ginsengs.
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