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

ABSTRACT

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 of E. 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 of E. 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.