不同生长阶段马齿苋水分及总黄酮含量分析

采用国标及药典方法分别对不同生长阶段的鲜马齿苋水分及总黄酮含量进行分析,测试分析结果表明:马齿苋全草、茎及叶水分含量随着生长期的延长均逐渐降低,变化不显著;马齿苋全草、茎及叶总黄酮含量随着生长期的延长逐渐降低;马齿苋叶总黄酮含量在生长后期均显著高于全草及茎.通过对马齿苋生长过程中全草总黄酮含量的动态变化以及不同部位总黄酮的分布状况分析,以总黄酮含量为指标,确定马齿苋的适宜采收时间为生长中期.

Anylsis of Water and Rotal Flavonoids Contents in Purslane During Different Growth Stages

By the pharmacopoeia method,the water and total flavonoids content of fresh purslane at different growth stages were analyzed.Test results showed that the water content of purslane grass,stems and leaves did not significantly decreased with the extension of growth stages.The total flavonoids content in purslane grass,stems and leaves reduced gradually with the extension of growth stages.The total flavonoids content of purslane leaves at the later growth stage was significantly higher than that in whole plant and stem.By the dynamic determination and distribution of the total flavonoids content at different growth stages,the appropriate harvest time of purslane is the mid growth stage.