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大黄是我国的特产之一,在中药界应用范围也很广,目前有的生产单位曾考虑用一些方法来制得大黄的浸出物,以便于调配及服用。如北京同仁堂提炼厂在配制黄连上清丸的过程中,将其中大黄先进行了以下的处理:大黄用0.5%氢氧化纳液冷浸,浸出液加酸进行酸化,有沉淀析出,过滤,收集沉淀,洗涤至呈中性,干燥之。此沉淀物即用来配入黄
Rhubarb is one of China’s specialty products and has a wide range of applications in the Chinese medicine industry. At present, some production units have considered using some methods to obtain the extract of rhubarb in order to facilitate deployment and consumption. For example, in the preparation process of Huanglian Shangqing Pills by Beijing Tongrentang Refinery, the rhubarb is first processed as follows: rhubarb is soaked with 0.5% sodium hydroxide solution, and the leachate is acidified with acid, precipitates out, is filtered, and precipitates are collected. Wash until neutral, dry. This precipitate is used to match yellow