Extraction and Biotransformation of Ginsenoside Re from Ginseng Fruit Pulp

In order to make full use of ginseng resources,waste ginseng fruit pulp as the raw material,the contents and composition of ginsenoside in ginseng fruit pulp were analyzed,and extracted ginsenoside Re from ginseng fruit pulp. Then ginsenoside Re was biotransformed by ginseng enzyme to ginsenoside Rg2 group. Results showed that,in the dried products of wasted pulp from ginseng processing factory,the ginsenoside content was 6.21%(W/W),of which ginsenoside Re contents was 55.1%(W/W). Ginsenoside Re biotransformed to ginsenoside Rg2 group with a yield of 65%(W/W). HPLC and UPLC-Q-TOF-MS analysis showed that ginsenoside Rg2 group consists of 20(S)-Rg2,20(R)-Rg2,Rg4 and Rg6. This paper could provide a theoretical basis for the comprehensive utilization of wasted ginseng fruit pulp from ginseng processing factory.