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【目的】对市售南大青叶及其常见混伪品进行鉴别,为南大青叶药材及其中药制剂质量控制提供参考。【方法】采集南大青叶药材(野生及栽培品)及其混伪品球花马蓝叶、广西马蓝叶、路边青叶,采用性状、半显微、显微鉴定方法对其进行鉴别。【结果】南大青叶正品与混伪品在性状鉴别上的差异,主要在于叶形、叶片和叶柄的长度、叶肉颜色、叶尖端、叶缘、上下表面覆盖物及气味等;在半显微鉴别上的区别,主要在于叶柄、主脉、侧脉和叶肉上的毛茸特点及叶肉上是否能看到钟乳体等;而显微鉴别特征主要在于上下表皮细胞形状、气孔轴式、腺鳞、非腺毛及结晶的类型等。【结论】性状鉴定、半显微鉴定及显微鉴定法相结合可准确鉴别、区分南大青叶及其混伪品,为南大青叶的鉴别提供理论依据。
【Objective】 The objective of this study was to identify the commercially available P. dahurica leaves and their common dummies so as to provide a reference for the quality control of S. australis and its preparations. 【Method】 The medicinal materials (wild and cultivated) of S. aestivum L. and their hybrid fescue Himalayan blue leaves, Guangxi blue-green leaves and green leaves of roadside were collected and identified by traits, semi-microscopic and microscopic identification . 【Result】 The results showed that the differences in the characters of authentic and adulterated products of P. niloticus mainly included leaf shape, length of leaf and petiole, leaf color, leaf tip, leaf margin, top and bottom surface coverage and odor, The distinguishing difference mainly lies in the furry characteristics of petiole, main vein, lateral veins and mesophyll, and whether or not the bell’s milk body can be seen on the mesophyll. The microscopic distinguishing feature mainly lies in the shapes of upper and lower epidermal cells, stomatal axis, gland Scales, non-glandular hair and the type of crystal. 【Conclusion】 Trait identification, semi-microscopic identification and microscopic identification can be used to identify and distinguish S. dahurica leaves and their adulterants accurately, which provides a theoretical basis for the identification of S. dahurica leaves.