Objective To estimate the antitumor activity of Qinglongyi alcohol extract and different solvent fractions and screen the antitumor active fractions in vitro.
目的研究青龙衣乙醇提取物及不同溶剂萃取部位对肿瘤细胞的体外抑制作用，筛选青龙衣抗肿瘤活性部位。
Tannin fractions with different molecular weight distributions were obtained by purification of alcohol precipitation and fractionation of solvent extractions of black wattle bark tannins.
通过对黑荆树皮单宁进行醇沉纯化和溶剂萃取分级，可得到分子量分布范围不同的单宁级分。
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