超声波法提取旋覆花总黄酮工艺的优化

Optimization of Ultrasonic Extraction of Total Flavonoids from Inula japonica Thunb.

在单因素试验的基础上,通过正交试验优化超声波法提取旋覆花总黄酮的工艺。结果表明,超声波法提取旋覆花总黄酮的最佳工艺条件为:超声功率280 W,提取时间75 min,液固比35∶1(m L/g),乙醇体积分数50%,该工艺条件下总黄酮的提取率可达76.1 mg/g。

Based on the single factor experiment, orthogonal experiment was used to optimize ultrasonic extraction technique of total flavonoids from Inula japonica Thunb.The results showed that, the optimal conditions of extracting flavonoids from Inula japonica Thunb. were as follows, ultrasonic power 280 W, extraction time 75 min, the solventto-solid ratio 35 ∶1（mL/g）, and ethanol concentration 50 %. Under these conditions, the extraction rate of total flavonoids was 76.1 mg/g.