正交试验优选核桃楸皮中有效成分的提取工艺

对核桃楸树皮粗粉进行提取分离，鉴定所得产物并优化提取工艺。将核桃楸药材粗粉，经乙醇回流提取，乙酸乙酯和氯仿萃取，后经反复硅胶柱层析梯度洗脱得到3种黄酮类化合物。以正交试验考查最佳提取工艺。通过正交试验得到提取核桃楸树皮有效成分的最佳工艺为以8倍核桃楸粗粉质量的75％乙醇回流提取3次，每次历时1．5h，并用核磁共振的方法对所得化合物进行鉴定。乙醇回流提取并分离得到核桃楸树皮中的杨梅素、柚皮素、橙皮素3种黄酮类单体是可行的。

Optimization the extraction process of effective compositions from Cortex Juglandis Mandshuricae

To optimize the extraction process of effective compositions from Cortex Juglandis Mandshuricae. Cortex Juglandis Mandshuricae were extracted with ethanol, concentrated with ethyl acetate and chloroform and eluted gradiently on silica gel to get 3 kinds of flavonoids compounds. Orthogonal experiments were used to examine the best extraction process. The best extraction process is to use 75% ethanol with 8 times the weight of Cortex Juglandis Mandshuricae scoured grist to reflux extract 3 times with 1.5 h each time. The products identified by nuclear magnetic resonance meth- ods. Myricetin, naringenin and hesperitin are the main contents of the Cortex Juglandis Mandshuricae, and the ethanol refluxing extraction process is feasible.