正交试验法优选槐米中槲皮素的提取工艺

Orthogonal test for optimization of quercetin extracting procedure from bud of Sophora japonica

目的 优选槐米中槲皮素的提取工艺。方法 采用正交试验法 ,以提取物中槲皮素的含量和槲皮素的提取率为指标进行试验。结果 优选出从槐米中提取槲皮素的最佳工艺为 :用 10倍量的 0 0 5 %氢氧化钠溶液煮沸 4次 ,每次 2 0min ,调节pH值至 6 ,取沉淀加 10倍量的 4 %硫酸溶液微沸水解 1h。结论 该工艺可提高槐米中槲皮素的提取率和纯度。

Object To select the optimum extracting procedure for quercetin from bud of Sophora japonica L. Methods The optimum extracting procedure was selected with the content and extraction effeciency of quercetin from bud of S. japonica by orthogonal test design. Results The optimum extracting procedure was determined with 10 times of 0.05% sodium hydroxide decocting 20 min and 4 times, adjusting pH value to 6, hydrolyzing with 10 times of 4% sulfuric acid for 1 h after precipitated. Conclusion The optimum extracting procedure increased the content and extraction efficiency of quercetin from bud of S. japonica.