Ultrasonic technology was used to extract chlorogenic acid from the leaves and barks of Eucommia ulmoides Oliv.and establish HPLC-PAD method for determining the content of chlorogenic acid.

• 采用超声技术提取杜仲叶和皮中的绿原酸,并建立了HPLC-PAD法测定绿原酸的含量。