1.In contrast with different extraction methods, the alkannin could be extracted quickly and effectively by the ultrasonic wave.

1.研究了超声波法和有机溶剂法提紫草色素的工条件,超声波法提高色素的提速率。

2.In order to provide a basis for the research and development of gromwell,the studies on domestic extraction of alkannin was reviewed in briefly.

2.对国内有关紫草色素提的概况进行了综述,为研究和开发紫草提供依据。