Reagentless D-sorbitol biosensor based on D-sorbitol dehydrogenase immobilized in a sol-gel carbon nanotubes-poly(methylene green) composite - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Analytical and Bioanalytical Chemistry Année : 2013

Reagentless D-sorbitol biosensor based on D-sorbitol dehydrogenase immobilized in a sol-gel carbon nanotubes-poly(methylene green) composite

Résumé

A reagentless D-sorbitol biosensor based on NAD-dependent D-sorbitol dehydrogenase (DSDH) immobilized in a sol-gel carbon nanotubes-poly(methylene green) composite has been developed. It was prepared by durably immobilizing the NAD(+) cofactor with DSDH in a sol-gel thin film on the surface of carbon nanotubes functionalized with poly(methylene green). This device enables selective determination of D-sorbitol at 0.2 V with a sensitivity of 8.7 mu Ammol(-1)Lcm(-2) and a detection limit of 0.11 mmolL(-1). Moreover, this biosensor has excellent operational stability upon continuous use in hydrodynamic conditions.

Dates et versions

hal-01505609 , version 1 (11-04-2017)

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Citer

Zhijie Wang, Mathieu Etienne, Veronika Urbanova, Gert-Wieland Kohring, Alain Walcarius. Reagentless D-sorbitol biosensor based on D-sorbitol dehydrogenase immobilized in a sol-gel carbon nanotubes-poly(methylene green) composite. Analytical and Bioanalytical Chemistry, 2013, 405 (11), pp.3899-3906. ⟨10.1007/s00216-013-6820-6⟩. ⟨hal-01505609⟩
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