Extraction method of radix cynanchi bungei total flavonoids

The invention belongs to the technical field of traditional Chinese medicine analysis, and particularly relates to an extraction method of radix cynanchi bungei total flavonoids. The extraction method comprises the following steps: mixing radix cynanchi bungei with ethanol, adding a nonionic surfactant, and extracting for 10-50 minutes at 40-80 DEG C by utilizing a circulating ultrasonic method. The extraction method of radix cynanchi bungei total flavonoids provided by the invention has the advantages of short extraction period, low cost, high yield and the like while keeping the activity of flavonoids. 本发明属于中药分析技术领域，具体涉及一种白首乌总黄酮的提取方法，其是将白首乌与乙醇混合后，加入非离子表面活性剂，并利用循环超声法在40-80℃下提取10-50min。本发明提供的白首乌总黄酮的提取方法，在保持黄酮活性的同时，又具有提取周期短、成本低、得率高等优势。