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

研究了法和有机溶剂法提取天然紫草色素的工条件,法可明显提高色素的提取速。

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

内有关紫草色素提取的概况进行了综述,为研究和开发紫草提供依据。