Comparison of corilagin content in Erodium stephanianum from different collection month / 中成药

ABSTRACT

AIM: To determine the contents of corilagin in Erodium stephanianum Willd. from different collection month and to define the best collection time for this herb. METHODS: The contents of corilagin in each samples of E. stephanianum were determined by HPLC. RESULTS: The linear regression of corilagin was obtained in the range of 0.22～1.10?g. The average recovery was 98.6% with a RSD of 0.63%. CONCLUSION: The content of corilagin in E. stephanianum collected in August is the highest among the samples throughout the collection months.