对新棕皮、陈棕及陈棕炭的提取物进行了化学成分系统预试和薄层分析,结果表明,提取物在鞣质、酚类、有机酸、黄酮类、蒽醌类等预试项中,均呈明显的阳性反应。三样品的薄层斑点存在着较大差异,陈棕煅炭后斑点明显减少,但出现了一些新的斑点,而且与其他样品R_f值相同斑点的荧光和显色斑点的色泽亦有多处不同。 Chemical compositional pretests and thin layer analyses were performed on the extracts from the new brown, brown and brown palm charcoal. The results showed that the extracts were tested in tannins, phenols, organic acids, flavonoids, and terpenes. In the item, there was a clear positive reaction. The thin-layered spots of the three samples were quite different. After the brown-calcined charcoal, the spots were significantly reduced, but some new spots appeared. Moreover, the color of the fluorescent spots and colored spots of the same spots as other samples had different values.