超声波辅助提取竹叶茶多酚工艺研究

Study on Extraction of Tea Polyphenols from the Leaves of Bamboo

以竹叶为原料,采用超声波辅助提取茶多酚,通过单因素实验和正交试验优化提取条件。结果表明,从竹叶中提取茶多酚的最佳条件为:乙醇浓度60%、料液比1?10、温度65℃、提取时间30 min、超声波功率320 W,此条件下茶多酚得率为1.78%。

Tea poiyphenols from the Leaves of Bamboo were extracted by the aid of ultrasonic wave and the extraction conditions were optimized by single factor and orthogonal experiments in this study. The optimal extraction condition were： 60 % （v/v） ethanol, solid to liquid ratio 1 ： 10, temperute 65℃, extraction time 30min and power of ultrasonic 320w. The yield of polyphenols was 1.78%,