Combination of normal-phase medium-pressure liquid chromatography and high-performance counter-current chromatography for preparation of ginsenoside-Ro from panax ginseng with high recovery and efficiency

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Abstract

Ginsenoside-Ro which belongs to the oleanane-type saponins has anti-inflammatory, anti-platelet, anticomplementary and immunomodulatory activities. The present paper described the preparation of ginsenoside-Ro from panax ginseng with high recovery and efficiency by combination of normal-phase medium-pressure liquid chromatography (NP-MPLC) and high-performance counter-current chromatography (HPCCC). The crude sample was preliminarily chromatographed by NP-MPLC to enrich ginsenoside-Ro to the purity of 70.2% with 95.0% recovery. Then, the enriched sample was further purified by HPCCC with a solvent system composed of ethyl acetate-isopropanol-0.1% formic acid (3:1:5, v/v), where 61 mg ginsenoside-Ro was obtained from 100 mg enriched sample with 96.0% purity and 83.4% recovery. The overall recovery of ginsenoside-Ro was 79.2%, whose structure was identified by liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS) finally. © 2010 Elsevier B.V. All rights reserved.

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Cheng, Y., Liang, Q., Hu, P., Wang, Y., Jun, F. W., & Luo, G. (2010). Combination of normal-phase medium-pressure liquid chromatography and high-performance counter-current chromatography for preparation of ginsenoside-Ro from panax ginseng with high recovery and efficiency. Separation and Purification Technology, 73(3), 397–402. https://doi.org/10.1016/j.seppur.2010.04.029

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