超声强度对提取益母草总碱的影响

Effect of ultrasonic intensity on exacting leonurine from leonurus hetrophyllus

报道用不同强度的超声从益母草中提取益母草总生物碱的实验结果．探讨了超声强度与总生物碱提出率的关系．结果表明，超声提取与常规的回流法比较，无需加热，且平均提出率高，其中以超声强度为 ０５ Ｗ ／ｃｍ ２ ，提取时间为 ４０ｍ ｉｎ

The extraction is made of leonurine from leonurus hetrophyllus by the different intensity ultrasonic wave, and the relation between ultrasonic intensity and extract rate of creature leonurine is explored systematically. The result of experiment shows that the ultrasonic extraction is better than the traditional method, because no heating is necessary and it's average extraction rate is also higher than the traditional method. Of course, the extraction rate is the highest for forty minutesextraction and at 0.5 w/cm 2 (ultrasonic intensity).