Effect of ethanol concentration on saponin composition of red ginseng extract
1985
Sung, H.S. (Korea Ginseng and Tobacco Research Inst., Taejon (Korea R.)) | Yang, C.B. (Hanyang Univ., Seoul (Korea R.). Dept. of Food and Nutrition)
The effect of ethanol concentration on saponin composition of red ginseng extract was studied during extraction at 80 deg. C for 5 times of 8 hrs. The increase in ethanol concentration from 0% to 90% resulted in a gradual reduction in solids yield and an increase in the recovery of total ginsenosides. All of the ginsenosides determined also significantly increased, but ginsenoside-Rb1, -Rb2 and -Rd relatively decreased a little by raising the concentration 70% to 90%. The yield ratio of protopanaxadiol/protopanaxatriol saponin were in the range of 1.69-1.95. No significant improvement in pure saponin yield was observed between 70% and 90% ethanol
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