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[Study on extraction and purification process of total ginsenosides from Radix Ginseng]
Li-Ling Xie1, Li Ren, Xian-Sheng Lai
1Department of Biology, Shantou University, Shantou 515063, China. llxie@stu.edu.cn
Objective:
To optimize the technological parameters of the extraction and purification process of total ginsenosides from Radix Ginseng.
Methods:
With the contents of ginsenoside Rg1, ginsenoside Re and ginsenoside Rb1, the orthogonal design was adopted to optimize the extraction process. The purification process was studied by optimizing the elutive ratio of total ginsenosides as the marker. HPLC and spectrophotometer were employed for the study.
Results:
The optimum conditions were as follows:Using 8 times volume of 75% ethanol extracting for 120 minutes and 2 times, the extraction temperature was 85 degrees C. AB-8 macroporous resin was selected, and the eluant was 4 BV 70% ethanol.
Conclusion:
The optimal conditions of extracting and purifying the total ginsenosides from Radix Ginseng is feasible.
