闭鞘姜类药材的鉴别研究

目的：为闭鞘姜类药材的鉴定和质量标准提供依据。方法：对闭鞘姜、莴笋花和光叶闭鞘姜根茎进行生药性状、组织显微和薄层色谱鉴别，对3种植物的叶表皮显微特征进行比较。结果：根茎横切面中柱鞘内侧维管束环导管的排列情况、导管中草酸钙结晶的存在、皮层和木栓细胞中草酸钙结晶的类型、薯蓣皂苷元的薄层色谱定性等是主要的鉴别特征。结论：3种药材可通过以上研究结果加以鉴别。

Pharmacognostical identification of rhizomes of Costus L.

Object To provide a basis for the identification and quality control of the crud drugs of Costus L.. Methods Morphological and histological characters of the rhizomes of Costus spectosus (Koen.) Smith, Costus lacerus Gagnep.and Costus tonkinensis Gagnep. were described and illustrated, respectively. TLC of the above drugs was finished. Microscopical characters of the epidemis of leaves of these species were also compared. Results The characters involving the vessel order in vascular bundle ring at the inner side of pericycle in the transverse section, calcium oxalate crystals occurred in the vessel, the characteristic calcium oxalate crystals in the cortex and cork cell and the TLC qualitative analysis for diosgenin, etc. are important for identification of Costus L.. Conclusion These three crude drugs can be identified by the above research results.