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

研究了声波法和有机溶剂法提取天然紫草色件,声波法可明显提高色提取速率。

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

对国内有关紫草色提取概况进行了综述,为研究和开发紫草提供依据。