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水试法鉴定中药材,主要是根据中药材所含各种化学成分经过水浸泡后产生各种特殊的变化,如发生颜色、泡沫、粘性、滑腻、膨胀及其它现象的改变等等,根据药物的不同变化特征通过水试鉴别,就可以确定中药材的真伪优劣。此乃本人在十几年药检工作中的经验总结。现将部分中药材的水试鉴定法分述如下:1 红花(菊科植物红花的干燥花)用水浸泡后,水变成金黄色,花不褪色。2 番红花(鸢尾科植物番红花的干燥柱头)浸泡水中,柱头膨胀呈长喇叭状,水面不应有油状物漂浮,水被染成黄色,不显红色,无沉淀,用棒搅动,且不易碎断。否则是伪品。3 秦皮少许浸入水中,浸出液在日光下可见蓝色荧光(因树皮含有荧光的结晶物
The water test method for identifying Chinese medicinal materials is mainly based on various chemical components contained in Chinese herbal medicines that undergo various changes after water immersion, such as the occurrence of color, foam, stickiness, creaminess, swelling and other phenomena, etc., according to drugs The different characteristics of the changes through the water test identification, you can determine the authenticity of the quality of Chinese herbal medicines. This is a summary of my experience in the drug inspection work for more than ten years. Now part of the Chinese herbal medicine water test appraisal method is as follows: 1 safflower (Aster plant safflower dried flowers) soaked in water, the water becomes golden yellow, flowers do not fade. 2 The saffron (the dry stigma of the saffron of the iris family) is soaked in water and the stigma swells like a horn. The surface of the water should not have oily substances floating. The water is dyed yellow, no red, no precipitate, stir with a stick. And it is not broken easily. Otherwise it is counterfeit. 3 Qin skin is immersed in water for a little while. The leachate can see blue fluorescence under sunlight (as the bark contains fluorescent crystals.