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PublicationSensors & Actuators: B. Chemical
Year2013
Volume183
Pages96-101
International

Electrochemical determination of berberine at a multi-walled carbon nanotubes modified glassy carbon electrode

Authors:Alemnew Geto , Marcos Pita Martínez, Antonio López de Lacey, Merid Tessema , Shimelis Admassie
Groups of research:BioElectroCatalysis
An electrochemical method was developed for voltammetric determination of berberine, an alkaloid of pharmacological interest, using a glassy carbon electrode modified with multi-walled carbon nanotubes. The modified electrode exhibited higher electrocatalytic activity toward the oxidation of berberine than the bare glassy carbon electrode. After optimizing the experimental conditions and square wave voltammetry parameters a linear current response toward berberine was obtained in the 0.25–30 M range with a detection limit (3, n = 10) of 0.14 M. The proposed procedure was successfully applied to  determine total berberine in Argemone mexicana seed sample with good recovery.
Keywords:Berberine, Carbon nanotube, Argemone mexicana, modified electrode, alkaloid
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