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目的 对广州市黄芪商品药材进行质量调查。方法 采用薄层扫描法测定黄芪市售药材中黄芪甲苷的含量 ,展开剂 :氯仿 乙酸乙酯 甲醇 水 (2 0∶ 40 ∶ 2 2∶ 10 ) ,10℃以下放置后的下层溶液 ;显色剂 :5 %硫酸乙醇溶液 ,10 5℃加热至斑点显色清晰 ;测定波长 5 0 0nm ;扫描方式 :反射式锯齿扫描。结果 9批黄芪药材中黄芪甲苷的含量在 0 .71～ 3.0 2mg/g之间。 结论 广州黄芪商品药材质量差异较大 ,使用时应配合外观检查 ,选择饮片较整齐、完整 ,颜色偏黄的样品
Objective To investigate the quality of medicinal materials of Radix Astragali in Guangzhou City. Methods The content of astragaloside IV in commercial materials of Radix Astragali was determined by TLC-scanning method. The developing solvent was chloroform ethyl acetate methanol (20:40:22:10), and the lower solution was placed below 10°C; Agent: 5% ethanol solution of sulfuric acid, heated at 105°C until the spot color is clear; measurement wavelength is 500nm; scanning mode: reflection type sawtooth scanning. Results The contents of astragaloside IV in 9 batches of Astragalus membranaceus were between 0.71 and 3.0 2 mg/g. Conclusion The quality of the medicinal materials of Astragalus membranaceus differs greatly. When used, it should be matched with the visual inspection, and the samples with a relatively neat, complete, and yellowish color should be selected.