牛蒡子中牛蒡苷和牛蒡苷元的超声提取工艺研究

Factors of ultrasonic-assisted extraction of arctiin and arctigenin from Fructus arctii

目的:研究牛蒡子中牛蒡苷和牛蒡苷元的超声提取工艺。方法:考察超声功率、药材粒径、液固比、提取时间、提取温度以及占空比等因素对牛蒡苷及牛蒡苷元提取率的影响,并采用正交试验设计优化提取工艺。结果:在本试验条件内,超声提取的最优条件如下:药材粒径为80～100目,提取温度为50℃,液固比为14mL/g,超声功率为400W,提取时间为10min。结论:按照优化正交试验确定的最佳工艺条件合理、可靠。

AIM： To investigate and optimize the technology of ultrasonic-assisted extraction of arctiin and arctigenin from Fructus arctii.METHODS： The effects of ultrasonic power,particle size,ratio of liquid to solid,extraction time,extraction temperature and duty factor on the extraction rates of arctiin and arctigenin were investigated,and optimized with orthogonal experiments.RESULTS： The results showed that the optimal extraction conditions were as follows： particle 80 ～ 100 mesh 14 mL/g,ratio of liquid to solid 400 W ultrasonic power,50 ℃ of extraction temperature,and 10 min of extraction time.CONCLUSION： The optimized conditions are reasonable and reliable.