CD-MEKC Method to Analyze Triterpene Acids in Traditional Chinese Medicines

نویسندگان

  • Hui Du
  • Xiaoqing Chen
چکیده

Um método cromatográfico eletrocinético micelar modificado por ciclodextrina (CD-MEKC) foi desenvolvido para separar e determinar ácido betulínico (BA), ácido oleanólico (OA) e ácido ursólico (UA) usados na medicina tradicional Chinesa (TCMs). Três triterpenos pentacíclicos ácidos foram separados em tampão (pH 9,0) de metanol 6% (v/v), contendo 10 mmol L de tetraborato dissódico, 10 mmol L de hidrogênio fosfato de sódio, 50 mmol L de dodecilsulfato de sódio, 15 mmol L de 2-hidroxipropil-β-ciclodextrina em 15 min. Uma boa relação linear entre a área de pico e a concentração foram obtidos nos intervalos de 16,5-330 μg mL, 18-360 μg mL e 19,5-390 μg mL para BA, OA e UA, respectivamente. Comparado com cromatografia líquida de alta eficiência com γ-CD como fase móvel quiral aditiva (CMPA-HPLC), CD-MEKC apresentou melhor eficiência analítica para os três ácidos e o tempo analítico (15 min) foi mais curto do que para CMPA-HPLC (80 min).

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تاریخ انتشار 2009