瑶药肿瘤藤（星毛冠盖藤）的生药学研究

对广西产的肿瘤藤（星毛冠盖藤）药材进行研究,为编制肿瘤藤药材质量标准提供科学依据。对广西肿瘤藤进行形态性状鉴别、显微鉴别及理化鉴别。形态性状鉴别的主要特征为嫩枝、叶下面和花序均密被淡褐色或锈色柔毛;药材茎圆柱形、灰色或灰褐色;根锈色或褐色;枝、茎和根表面具较多纵皱纹或不规则沟槽。茎质脆,易折断,断面不整齐。茎的横断面可见皮部宽广、木部窄。老茎髓部中空,呈棕色。气微,味微苦。显微鉴别的结果显示,肿瘤藤茎叶细胞内或细胞间有较多棕色块状物质,多见草酸钙结晶,有各种形状的石细胞以及油细胞。理化鉴别的结果表明,肿瘤藤中含有鞣质或酚类、黄酮类、强心苷类、皂苷类、还原性糖和有机酸类等物质,没有检测出蒽醌类、生物碱类物质的存在。

Pharmacognosy of Zhongliuteng(Pileostegia tomentella Hand. Mazz) of Yao Medicine

In order to to study the pharmacognosy of Zhongliuteng (Pileostegia tomentella Hand. Mazz) from Guangxi and to set quality standards of this herbs, identifications of morphology characters, microscopic and physichemical identifications of Guangxi Zhongliuteng were carried out. The results showed that twigs underneath leaf and inflorescence were dense, hazy or embroidered pilose; cylindrical stems were grey or taupe; root were rusty or brown; branches were wrinkle, stems and roots had irregular grooves. Stems were crisp and easy to break irregularly. The break of the stems could be seen it’s wide skin, narrow wood. Old stem marrow hollow, brown. Slight odour, and it tastes slightly bitter. Microscopic identification results showed that there were much brown block material and calcium oxalate crystal, a variety of shapes of stone cells and oil cells in Zhongliuteng stem and leaf intracellular or between cells. Physicochemical identification results showed that Zhongliuteng contained tannins or phenols, flavonoids, cardiac glycosides, saponins, reducing sugar, organic acids and other substances but no anthraquinones and alkaloids detected.