2,2-Diphenyl-1-picrylhydrazyl radical-scavenging active components from Polygonum multiflorum thunb.

@article{Chen199922Diphenyl1picrylhydrazylRA,
  title={2,2-Diphenyl-1-picrylhydrazyl radical-scavenging active components from Polygonum multiflorum thunb.},
  author={Yong Chen and Mingfu Wang and Robert T. Rosen and Chi-Tang Ho},
  journal={Journal of agricultural and food chemistry},
  year={1999},
  volume={47 6},
  pages={2226-8}
}
An activity-directed fractionation and purification process was used to identify the antioxidative components of Polygonum multiflorum Thunb. (PM). Dried root of PM was extracted with 95% ethanol and then separated into water, ethyl acetate, and hexane fractions. Among these only the ethyl acetate phase showed strong antioxidant activity by the 2,2-diphenyl… CONTINUE READING