Microwave-assisted extraction of ginsenosides from ginseng root |
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| Authors: | Youn Yuen Shu Ming Yu KoYuan Shiun Chang |
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| Affiliation: | a Department of Chemistry, National Kaohsiung Normal University, Kaohsiung, Taiwan, ROC
b School of Pharmacy, China Medical College, Taichung, Taiwan, ROC |
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| Abstract: | The extractions of ginsenosides Rg1 and Rb1 from ginseng root under atmospheric pressure by focused microwave-assisted technique have been investigated. The parameters used for the optimization were solvent composition, extraction time, and applied microwave power. The ginsenosides were quantified by high-performance liquid chromatography equipped with UV/Vis detector. The results of the 15-min microwave-assisted extraction (0.28% of Rg1 obtained in 70% water-ethanol and 1.31% of Rb1 obtained in 30% water-ethanol under 150 W of microwave power) were better than that from 10-h conventional solvent extraction (0.22% of Rg1 and 0.87% of Rb1 obtained in 70% water-ethanol). |
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| Keywords: | Panax ginseng Ginsenosides Microwave Extraction |
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