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槐角鉴别方法详解

ว 2026-09-10 11:34:56ที่ https://www.cntcm.org/yao/huaijiao.htmlเ admin

槐角为豆科植物槐的干燥成熟果实,又称槐实、槐子,其鉴别方法包括性状鉴别和理化鉴别。

一、性状鉴别。本品呈连珠状,长1-6cm,直径0.5-1cm。表面黄绿色或黄褐色,皱缩而粗糙,背缝线一侧呈黄色。质柔润,干燥皱缩,易在收缩处折断,断面黄绿色,有黏性。种子1-6粒,肾形,长约0.8cm,宽约0.5cm,表面光滑,棕黑色,一侧有灰白色圆形种脐;质坚硬,子叶2,黄绿色。果肉气微,味苦,种子嚼之有豆腥气。以饱满、色黄绿、质柔润者为佳。

二、显微鉴别。粉末黄绿色。种皮表皮细胞表面观呈类多角形,壁厚。胚乳细胞含脂肪油和糊粉粒。果皮表皮细胞垂周壁波状弯曲。导管为螺纹或网纹导管。

三、薄层色谱鉴别。取本品粉末1g,加甲醇10ml,超声处理30分钟,滤过,滤液作为供试品溶液。另取槐角苷对照品,加甲醇制成每1ml含1mg的溶液,作为对照品溶液。照薄层色谱法试验,以乙酸乙酯-甲醇-水(8:1:1)为展开剂,喷以10%硫酸乙醇溶液,在105℃加热至斑点显色清晰。

四、与槐花的鉴别。槐角为槐的果实,呈连珠状,表面黄绿色或黄褐色,皱缩而粗糙,质柔润,种子肾形,棕黑色,果肉气微,味苦,种子嚼之有豆腥气。槐花为槐的花,皱缩而卷曲,花瓣多散落,完整者花萼钟状,黄绿色,花瓣黄色或黄白色,气微,味微苦。两者来源不同,槐角止血润肠,槐花凉血止血。

五、产地分布。槐角全国大部分地区均产。冬季采收,除去杂质,干燥。

六、贮藏。置通风干燥处,防蛀。

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