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小檗碱的含量测定,中国药典采用沉淀法,操作较繁杂;王宪楷用氧化铝吸附比色法,但小檗碱不能定量地由丙酮自氧化铝洗脱;林启寿等用氧化铝同心环吸附色层法,但小檗碱系作环状层离,浓集性差;章育中等用硅钨酸滴定法,但不能分离季胺类生物碱;山口一孝等用分光光度法,但结果偏低;我们曾用氧化铝薄层比色法,但需专门仪器设备。另外尚有根据薄层析斑点面积与其含量呈正比关系的
Determination of berberine content, the Chinese Pharmacopoeia using precipitation method, the operation is more complicated; Wang Xianqi alumina adsorption colorimetric method, but berberine can not be quantitatively eluted from the alumina from the alumina; Lin Qishou, etc. with alumina concentric ring adsorption color Layer method, but the berberine for the ring delamination, poor concentration; Zhang Yuzhong titration method with silicotungstic acid, but can not be isolated quaternary alkaloids; Yamaguchi Kazuya using spectrophotometry, but the results are low; We used alumina thin layer colorimetry but required special equipment. In addition, there is a direct relationship between the area of the thin tomographic spot and its content.