芍药不同部位和不同采收期6个化学活性成分含量的比较

运用RP-HPLC法检测了赤芍不同采收期、不同生长年限和原植物不同部位的没食子酸、儿茶素、芍药内酯苷、芍药苷、苯甲酸和丹皮酚的含量。结果表明: 秋季采收的赤芍药材中儿茶素和芍药苷含量最高, 苯甲酸含量较低; 生长年限越长的赤芍儿茶素和芍药苷含量越高; 芍药根部的儿茶素和芍药苷含量最高, 鲜叶中也含有芍药苷。研究提示, 赤芍应以秋季采收成年植株为佳; 芍药苷在叶中已开始合成, 而儿茶素在叶中未检测到, 在根部占较大比例。

RP-HPLC determination of main chemical components in different parts and different harvest periods of Paeonia lactiflora

The contents of gallic acid, catechin, albiflorin, paeoniflorin, benzoic acid and paeonol extracted in different growth years, collecting season and of different parts of Paeonia lactiflora were determined.  The results showed that the contents of catechin and paeoniflorin in Paeonia lactiflora collected in autumn are the highest, and the contents of benzoic acid was lower than that of those collected at other time.  The longer is the age of Paeonia lactiflora, the higher is the contents of catechin and paeoniflorin.  The contents of catechin and paeoniflorin in the root of Paeonia lactiflora were higher than those in other parts of the plant.  There is a certain content of paeoniflorin in the leaves of Paeonia lactiflora.  Judging from the result, paeoniflorin is synthesized in the leaf and then transported to the root.  Catechin is not synthesized in the leaf, but mainly in the root.  Paeonia lactiflora should be collected in autumn, and immature plant should not be collected.