Yuan Chun-Ling, Guo Wei-Ying
Jinzhou Medical College, Jinzhou 121001, China.
Zhongguo Zhong Yao Za Zhi. 2007 Mar;32(5):385-7.
To investigate the optimum condition of extraction for the flavonoids in Glechoma longituba by ultrasonic wave.
Using orthogonal test, the effects of ultrasonic power, ultrasonic time, extraction temperature and solvent concentration were considered, the comprehensive evaluation was guided by the content of the flavonoids determined by ultraviolet spectrophotometer.
The optimum condition was as follow: ultrasonic power; 800 W, ultrasonic time 90 min, extraction temperature 40 degrees C, solvent concentration 65%. The flavonoids concent is 5.228%.
Using ethanol as solvent, circulated extraction of the flavonoids from G. longituba with ultrasonic wave is feasible with the optimum conditions in low temperature, short time and high production yield.
探讨超声波提取连钱草中黄酮类化合物的最佳条件。
采用正交试验，考察超声功率、超声时间、提取温度和溶剂浓度的影响，以紫外分光光度计测定黄酮类化合物含量为指标进行综合评价。
最佳条件如下：超声功率800W，超声时间90分钟，提取温度40℃，溶剂浓度65%。黄酮类化合物含量为5.228%。
以乙醇为溶剂，采用超声波循环提取连钱草中的黄酮类化合物，在低温、短时间、高产率的最佳条件下是可行的。
