中文摘要：

对超声法提取黄金茶中总黄酮的工艺进行优化。利用超声法提取黄金茶中的总黄酮，考察了超声时间、超声功率、乙醇浓度、料液比4个因素对总黄酮得率的影响，通过单因素试验和正交试验确定了提取的最佳提取工艺条件。最佳提取工艺为超声时间20 min，超声功率75 W，乙醇浓度70%，料液比1∶20（g/mL），总黄酮得率为5.3493%。

英文摘要：

The research aimed to optimize the extraction technology of total flavonoids from Golden tea by ultrasonic method. The effects of four factors including ultrasonic time,ultrasonic power,ethanol concentration and material to liquid ratio on the yield of total flavonoids were investigated. The optimum technological conditions of total flavonoids extraction were confirmed through single factor experiment and the orthogonal experiment. The optimum extration conditions were as follows：ultrasonic time was 20 min,ultrasonic power was 75 W,ethanol concentration was 70%and material to liquid ratio was 1∶20,the yield of total flavonoids was 5.349 3%.