| This paper is about the extraction process and quality assessment of huangbai.,which is dry raid of Phellodendron chinense Schneid or Phellodendron amurense Rupf. 22 samples of huangbai of different origins were collected and the quality assessment was developed.1. The extraction process of huangbai was studied in this paper. Using water and alcohol of different concentrations and different concentration HC1 as the extracting solvent, different extraction process were studied, HCl-70% alcohol (1:100) was confirmed the optimal solvent. The optimal extraction process was studied by orthogonal design with berberine, jatrorrhizine, palmataine content as indices. Three factors were selected in this experiment, including the solvent consumption, time of extraction and times of extraction. The result showed that the optimum extracting condition was 20ml solvent, and two times for ninety minutes each time. |
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