关键词: 山豆（Sophora tonkinensis Gapnep.）根, 总黄酮, 总皂苷, 工艺优化

Abstract: Using the root of Sophora tonkinensis Gapnep. as material,herbal flash,ultrasonic and composite enzymatic methods were used to extract total flavonoids and saponins. The yield of total saponins and flavonoids was taken as the index,and their extraction conditions were optimized by orthogonal test. The results showed that the optimum technological condition was that ethanol concentration was 50%,solid-liquid ratio was 1∶20（g∶mL）,ultrasonic time was 40 min,ultrasonic power was 500 W and ultrasonic temperature 80 ℃. Under the optimum extraction conditions,the process is magnified ten times,total sponnins and flavonoids were 1.22%,2.48%,the relative standard deviation was less than 2%.

Key words: the root of Sophora tonkinensis Gapnep., flavonoids, total saponins, optimization of process