Effect of Ethanol Concentration on Saponin Composition of Red Ginseng Extract

추출용매(抽出溶媒) 에탄올의 농도(濃度)가 홍삼(紅蔘)엑기스의 사포닌조성(組成)에 미치는 영향

  • Published : 1985.06.01

Abstract

The effect of ethanol concentration on saponin composition of red ginseng extract was studied during extraction at $80^{\circ}C$ for 5 times of 8 hours. The increase in ethanol concentration from 0% to 90% resulted a gradual reduction in solids yield and an increase in the recovery of total ginsenosides. All of the ginsenosides determined were also significantly increased, but ginsenoside-$Rb_1.$-$Rb_2$ and -Rd were 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${\sim}$1.95. No significant improvement in pure saponin yield was observed between 70% and 90% ethanol. Extraction with 70% ethanol was suggested for preparation of red ginseng extract from the result of this work.

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