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Electron Transfer Reactivity and Catalytic Activity of Choline Oxidase in Didodecyldimethylammonium Bromide Film and Its Application for Sensitive Choline Monitoring

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The direct electrochemistry of choline oxidase was achieved with the help of didodecyldimethylammonium bromide. For a 0.1 M pH 7.0 phosphate buffer solution, the anodic and cathodic peaks potentials were located at –0.358 V and −0.386 V, respectively. The enzyme could also maintain its bioactivity and electrocatalyze the reduction of its substrate, choline, which might provide the possibility to develop third generation choline biosensor.


Document Type: Research Article


Publication date: 2008-02-01

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