Isolation and purification of antioxidative isomeric polyphenols from the roots of Parthenocissus laetevirens by counter-current chromatography.

@article{He2007IsolationAP,
  title={Isolation and purification of antioxidative isomeric polyphenols from the roots of Parthenocissus laetevirens by counter-current chromatography.},
  author={Shan He and Yanbin Lu and Bin Rong Wu and Yuanjiang Pan},
  journal={Journal of chromatography. A},
  year={2007},
  volume={1151 1-2},
  pages={175-9}
}
Upright counter-current chromatography (CCC) with a two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (1:2:1:2, v/v/v/v) was applied to the isolation and purification of polyphenols from the roots of Parthenocissus laetevirens. Two cis-trans isomeric resveratrol dimers - quadrangularin A and parthenocissin A - were obtained from the crude sample in a one-step separation, with purities of 95.4 and 97.6%, respectively, as determined by HPLC. The structures of these two… CONTINUE READING

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