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卫生部暫行規定及苏联药典第八版关于甘草浸膏的含量测定是秤取一定量的甘草浸膏,在一定量的水与酒精的混合液中放置12小时后过濾。作者曾按卫生部暫行規定的方法檢驗,但在目前生产大躍进的情况下,放置12小时甚至到24小时,时间太長,跟不上实际的要求。因此开始进行方法上的改进。在試驗过程中,發现可以利用加热迴流的方法,能使甘草浸膏中的甘草酸在10分鐘内完全溶解于同样一定量的水与酒精的混合液中,而且浸膏中的淀粉並不由于加热而水解(或糊化)部分溶于酒精与水的混合液中,影响甘草酸的含量。本方法完全符合于时間短、速度快、浸出完全的要求,經过几次的試驗,結果尚好。茲介紹方法如下:
The provisional regulations of the Ministry of Health and the eighth edition of the Soviet Pharmacopoeia on the determination of licorice extract consist of weighing a certain amount of licorice extract. After a certain amount of water and alcohol is mixed for 12 hours, it is filtered. The author once examined according to the method stipulated by the Ministry of Health, but in the current case of the Great Leap Forward, it took 12 hours or even 24 hours for the time being too long to keep up with actual requirements. So start to improve the method. During the test, it was found that the method of heating and refluxing can be used to enable the glycyrrhizic acid in the licorice extract to completely dissolve in the same amount of water and alcohol mixture within 10 minutes, and the starch in the extract is not Due to heating, hydrolysis (or gelatinization) is partially soluble in a mixture of alcohol and water, which affects the content of glycyrrhizic acid. This method is in full compliance with the requirements of short time, high speed and complete leaching. After several tests, the results are still good. Here’s how to introduce it: