不同干燥加工与贮藏方法对杜仲叶药材质量变化的研究

Effect of different drying and storing methods on quality control for leaves of Eucommia ulmoides

目的研究不同干燥加工与贮藏方法对杜仲叶中主要成分量的影响。方法采用HPLC法测定不同干燥方式、贮藏条件下杜仲叶中绿原酸、京尼平苷酸、京尼平苷的量。结果新鲜杜仲叶采用烘干和微波杀青后阴干处理的杜仲叶药材京尼平苷酸和京尼平苷的量较高,阴干和微波杀青后阴干处理的杜仲叶药材绿原酸的量较高。低温避光贮存的杜仲叶药材各成分的量下降较慢。结论杜仲叶在最佳采收期进行采收后,经微波加热杀青、干燥处理后,对杜仲叶进行密封,低温并避光存放,存放时间在1年内其主要成分量均不会发生较大变化。

Objective To study the effect of different drying and storing methods on the content of main components in the leaves of Eucommia ulmoides. Methods The contents of chlorogenic acid, geniposide acid, and geniposide in the leaves ofE. ulmoides after being treated with different drying and storing methods were determined by HPLC. Results The contents of geniposide acid and geniposide were higher in the fresh leaves ofE. ulmoides and the content of chlorogenic acid was higher in the shade dried leaves of E. ulmoides after dried, microwave heated, and stored under low temperature. The content of main components in the leaves of E. ulmoides stored in darkness at low temperature decreased slowly. Conclusion The contents of main components in the leaves of E. ulmoides collected in the best harvest time remain almost the same after fixed, dried, microwave heated, sealed, stored at low temperature in darkness for one year.