CHEN Yi-ting, HE Lei-yu, CHEN Wei-hua, HUANG Lu, ZHANG Yu-chi, LIN Qi

(Chemistry and Chemical Engineering Department of Minjiang University, Fuzhou Fujian 350108)

Abstract: The single factor experiment and orthogonal experiment were used to optimize the process, using extractant concentration, solid-liquid ratio, microwave power and extraction time as the investigation factors, and the extraction rate of ursolic acid in Potentilla discolo as the assessment index. The optimum conditions for the process were as follows: 90% ethanol was used as the extractant, the ratio of raw material to extractant was 1:20, and the extraction time was 120 s at a microwave power level of 250 W.

Key words: Potentilla discolor; ursolic acid; microwave extraction

E-mail: fjcyt@foxmail.com

Analysis and Testing Technology and Instruments, Vol. 18, No. 1, 2012,19-23