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本文介绍了试管预试法及圆形滤纸层析预试法等化学方法,对真伪品天麻进行鉴定,结果在滤纸层析显色和pH测试中,天麻的乙醇提取液呈玫瑰红色,pH 3.0;几种仿品的均呈淡红色,pH 6.0。
In this paper, chemical methods such as pre-test method of test tube and pre-test method of circular filter paper chromatography are introduced. The authenticity of gastrodia elata is identified. The result shows that the ethanol extract of Gastrodia elata is reddish pink in pH value in filter paper chromatography and pH test. 3.0; All of the replicas were pale red, pH 6.0.