毛钩藤叶的生药学鉴定

Pharmacognostical identification of the leaf of Uncaria hirsuta Havil

目的建立毛钩藤叶的生药鉴定方法。方法采用生药性状鉴别、显微鉴别及薄层层析色谱法对毛钩藤叶进行生药学研究。结果毛钩藤叶含众多多细胞非腺毛,栅栏组织细胞2列,叶片薄璧细胞含草酸钙簇晶,于上表面的表皮下层细胞沿网脉成列分布,气孔直轴式,薄层层析显示与对照药材至少有2种相同的生物碱成分。结论本实验为毛钩藤叶的鉴定、质量标准的制定及进一步开发利用提供了科学依据。

Objective To perform a pharmacognostical study of the leaf of Uncaria hirsuta Havil.Methods The specimens of Folium Uncariae Hirsutae were collected for studying its characteristics,microscopic appearance and thin-layer chromatography.Results The leaf of Uncaria hirsuta Havil was characterized by numerous multicellular non-glandular hairs,2 lines of palisade tissue,a diacytic type of stoma,and clustered crystals in its parenchyma.At least two kinds of alkaloids identical to the control were identified in the specimens.Conclusion The results can be used as the evidence for identification,formulation of the quality-control standards as well as further utilization of Folium Uncariae Hirsutae.