大黄是临床常用中药,具有清热解毒、泻下、抗感染、利胆保肝、抗肿瘤等药理作用,在制备大黄口服制剂时,大都利用煎煮法进行提取,但因长时间受热而破坏其中的有效成分,影响提出率。笔者采用超声提取法,并和水煎煮法作对比试验,分别将提取液中的总蒽醌、游离蒽醌和结合蒽醌的含量进行测定。 Rhubarb is a commonly used traditional Chinese medicine, has the pharmacological effects of heat-clearing, detoxification, diarrhea, anti-infection, gallbladder and liver protection, anti-tumor and other pharmacological effects. In the preparation of rhubarb oral preparation, most of them are decocted for extraction, but they are destroyed due to prolonged exposure to heat. The effective ingredients influence the rate of submission. The author used ultrasonic extraction method and water decoction method for the comparative test, and determined the contents of total cesium, free hydrazine and combined hydrazine in the extract.