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紫草油是临床应用较广、疗效确实的制剂。以往在使用油煎法、油浸法制备时,生药利用率低,而且质量不易控制。本文通过实验,拟定了提取——溶解法制备紫草油,可排除因生药来源和操作方法不同引起的质量差异,并有节约药材和随用随配之优点。同时,以薄层层析法对紫草总色素进行定性鉴别;以比色法进行含量测定,结果均为满意,可作为该制剂的质量控制指标。
Lithospermum oil is widely used in clinical applications and it has a good curative effect. In the past, when using the frying method or the oil leaching method, the utilization rate of the crude drug was low, and the quality was not easily controlled. In this paper, the extraction-dissolution method was adopted to prepare the lithospermum oil, which can eliminate the differences in quality caused by different sources and operating methods of crude drugs. It also has the advantages of saving medicinal materials and accompanying use. At the same time, the total pigment of Lithospermum erythrorhizon was identified by thin layer chromatography. The content of the total pigment was determined by colorimetry. The results were all satisfactory. It can be used as the quality control index of the preparation.