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Abstract ▼ AI-Helper

The effect of the saponin fraction extracted from Panax ginseng C.A. Meyer on the antioxidant activity of ${\alpha}-tocopherol$ was investigated in vitro as well as in vivo. Microsomal preparation of albino rat (Sprague-Dawley, 180-200g) was incubated in the mixture containing NADPH,

The effect of the saponin fraction extracted from Panax ginseng C.A. Meyer on the antioxidant activity of ${\alpha}-tocopherol$ was investigated in vitro as well as in vivo. Microsomal preparation of albino rat (Sprague-Dawley, 180-200g) was incubated in the mixture containing NADPH, $Fe^{3+},$ ATP, ${\alpha}-tocopherol$ with and/or without ginseng saponin fraction for 30 minutes and the malondialdehyde formed was assayed and found that the saponin fraction stimulated the antioxidant activity of ${\alpha}-tocopherol$ cooperatively. It was also realized that the cooperative stimulation of the antioxidant activity of ${\alpha}-tocopherol$ was most eminent when the concentration of the saponin fraction was around $10^{-5}\%$ in the reaction mixture. Alcoholic suspension of ${\alpha}-tocopherol$ with and/or without ginseng saponin fraction was administered orally to rats in which the lipid peroxidation was induced by ethanol administration and the lipid peroxide contents of the liver were assayed at certain periods of time after ${\alpha}-tocopherol$ administration in this animal. It was reported that the saponin fraction stimulated the absorption of ${\alpha}-tocopherol$ in rats and this was confirmed again in the present work. From the previous work and present experimental results, it seemed that the saponin fraction accelerated the absorption of ${\alpha}-tocopherol$ and therefore stimulated the antioxidant activity of ${\alpha}-tocopherol$ more effectively in the animal body.