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单叶蔓荆子的药材鉴别方法

ว 2026-09-09 23:09:41ที่ 鉴别方法เ 中国国际医疗服务系统
单叶蔓荆子为常用中药,商品为马鞭草科植物单叶蔓荆和三叶蔓荆的干燥带宿萼的果实。性状鉴别:果实球形,直径4-6mm。表面黑色或棕褐色,被粉霜状绒毛,有细纵沟4条,用放大镜观察可见密布淡黄色小点。顶端微凹,有脱落花柱痕,下部有宿萼及短果柄,宿萼包被果实的1/3-2/3,顶端5齿裂,常在一侧撕裂成两瓣,灰白色,密生细绒毛。体轻质坚,不易破碎。横断面果皮灰黄色,有棕褐色点排列成环,分为4室,每室有种子1枚或不育。种仁黄白色,有油性。气芳香,味微辛略苦。以粒大饱满、气香为佳。显微鉴别:单叶蔓荆果实横切面外果皮为一列含棕色颗粒物的扁平细胞,外被角质层,密布腺点;中果皮细胞大类圆形,壁稍厚木化,散有维管束排列规则呈环状;内果皮为3-6列类圆形或分枝状石细胞。理化鉴别:取粉末加丙酮冷浸,滤液加镁粉-盐酸显深红色(检查黄酮);薄层层析以蔓荆子黄素为对照品,紫外灯下显黄棕色荧光。
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