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穿心莲内服制剂在全国已广泛应用,疗效较好。但由于各单位生产工艺不同,致使产品中内酯含量差异很大,因而疗效受到影响。为了解决制剂工艺问题,对各种提取方法进行了一系列的实验研究,现介绍如下: 一、实验方法:将煎熬提取液和煎后药渣的乙醇迥流液,分别用电位法进行含量测定,以考察提出率;另将穿心莲叶粗粉分别用不同浓度乙醇渗漉,将渗漉后药渣再用乙醇迥流,迥流液和渗漉液分别滴加Kedd试液,进行比色测定,以考察不同浓度乙醇的提出率;同时从不同浓度乙醇提取液中分离
Andrographis orally taking preparations have been widely used in the country and have good curative effect. However, due to the different production processes of each unit, the lactone content in the product varies greatly, so the efficacy is affected. In order to solve the problem of the preparation process, a series of experimental studies on various extraction methods were conducted as follows: I. Experimental method: The osmotic solution of the decoction extract and the decocted dregs were separately treated with potentiometric method. The determination was conducted to investigate the proposed rate; the crude powder of Andrographis paniculata was osmotically leached with different concentrations of ethanol, and the osmotic scouring was followed by the ethanol turbulent flow. The turbulent liquid and the osmotic fluid were respectively added with the Kedd test solution to perform colorimetry. Measurements to investigate the proposed rates of different concentrations of ethanol; simultaneous separation from different concentrations of ethanol extracts