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渗漉法是中药制剂过程中常用的提取方法。该方法侵出效果好,生产周期较短,设备简单。此法常用不同浓度的乙醇对水不溶性有效成分进行提取,溶媒用量一般为药材的5倍(V/W)。渗漉过程中先放出的渗漉液颜色较深,后放出的渗漉液色泽较淡。整个渗漉过程中有效成分渗出量如何变化,究竟用几倍量的溶媒渗漉比较合适,针对这两个问题,我们作了以下实验。
The percolation method is a commonly used extraction method in the process of traditional Chinese medicine preparations. The method has good effect of invading, short production period and simple equipment. This method usually uses different concentrations of ethanol to extract water-insoluble active ingredients. The amount of solvent used is generally 5 times (V/W) of medicinal materials. The osmotic fluid released first in the process of percolation is dark in color, and the osmotic fluid released later is light in color. It is appropriate to see how the amount of active ingredient percolation changes throughout the percolation process. It is appropriate to use several times the amount of solvent percolation. For these two problems, we have done the following experiments.