目的 研究蒺藜总皂苷、总黄酮类物质的动态积累情况及其在根、茎、叶、果等部位的分布情况。方法 采用紫外分光光度法测定了成熟期内3种不同生长环境下蒺藜全草和各部位中总皂苷、总黄酮的量。结果 蒺藜总皂苷与总黄酮的高峰期出现时间、积累曲线等并不一致；其中，总皂苷主要集中分布在叶片中，总黄酮主要在叶片和果实中积累。结论 以蒺藜总皂苷量确定蒺藜的最佳采收期并不适用于总黄酮类物质的积累，应根据目标成分的变化掌握蒺藜的适宜采收期；其次，应重视蒺藜叶片的采集和利用。

Objective To study the accumulation dynamics of total saponins and flavonoids in Tribulus terrestris and their distribution in roots, stems, leaves, and fruits. Methods The contents of total saponins and flavonoids in the whole herb and various parts of T. terrestris collected from three different habitats in maturation stage were determined by UV spectrophotometry. Results The peak periods and dynamic accumulation curves of total saponins and flavonoids were not similar, and the total saponins were enriched in the leaves while the total flavonoids were enriched both in the fruits and leaves. Conclusion Confirmed by the content of total saponins, the optimal collection period is not applicable to the accumulation of total flavonoids, so the suitable harvest time should be chosen with the target constituent changing. The preservation and utilization of T. terrestris leaves should be paid more attention in the havest time.

国家科技支撑计划（2006BAI06A05205）；吉林省科技发展计划（20040901202205）