中国药典1977年版二部(219页)中谷氨酸片的鉴别,采用氢氧化钠试液溶解,过滤,滤液加酸析出沉淀后进行纸层层析。但是,加氢氧化钠试液溶解后,溶液变为乳白色胶状物。过滤时,无论是自然过滤或是减压过滤,均很困难。为此,我们对该法进行了改进,经多次试验,改进后的方法简便、快速,现介绍如下。 Chinese Pharmacopoeia 1977 edition of two (219 pages) in the identification of glutamate tablets, the use of sodium hydroxide solution was dissolved, filtered, the filtrate acid precipitation precipitation layer chromatography. However, with sodium hydroxide test solution dissolved, the solution became a milky white jelly. Filtration, either natural or vacuum filtration, are very difficult. To this end, we have improved the law, after many tests, the improved method is simple and fast, are as follows.