用均匀设计法优选了测柏叶中槲皮苷的提取纯化工艺。结果表明：乙醇浓度、用量、浸泡时间以及水的用量、萃取溶剂体积对槲皮苷得率都有直接的影响；而氯化钠及pH值对得率影响不大。

Processes for the extraction and purification of queritrin from leaves of Platycladus orientalis (L.)Franco were explored by the use of homogeneous design. Results showed that the ratio and concentration of ethyl alcohol used for the extraction, as well as the duration of extraction directly affected the yield of quercitrin，while sodium chloride and pH showed only minimum influences.