复方大青叶注射液的制备方法都是以水为溶剂,中间经过亲水性有机溶剂处理,以除去大分子杂质。但经实验认为,在制备中加入乙醇量高达85%或用极性小的醋酸乙酯处理后,造成的甙糖损失近50%,影响疗效。为此,对制备工艺应作进一步改进。 The preparation method of compound Daqingye injection is to use water as a solvent and the middle is treated with a hydrophilic organic solvent to remove macromolecular impurities. However, according to the experiment, when the amount of ethanol added to the preparation is as high as 85% or the ethyl acetate is treated with a small amount of polar, the loss of caramel is nearly 50%, which affects the curative effect. For this reason, further improvements should be made to the preparation process.