alexa Abstract | Bioelectrochemical Behavior of the Composite PVP-Os/chitosan as a Mediator with Different Types of Enzymes at Graphite Electrode

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Research Article Open Access

Abstract

Chitosan was cross-linked to an osmium redox polymer, poly(4-vinylpyridine) osmium bipyridyl [PVP-Os-(bpy)2-Cl], to form PVP-Os-(bpy)2-Cl/chitosan composite known to make a porous and hydrophilic film with an enzyme. In this work we demonstrate such a composite is a useful trestle, for hosting various sugars oxidizing enzymes to construct biosensors. Glucose sensing ability has been proven with the following glucose oxidizing redox enzymes; Aspergillus niger glucose oxidase (AnGOX), Myriococcum thermophilum cellobiose dehydrogenase, (MtCDH), glycosylated Agaricus meleagris pyranose dehydrogenase (gAmPDH), fragmented deglycosylated Agaricus meleagris pyranose dehydrogenase (fdgAmPDH), and Aspergillus sp. glucose dehydrogenase (AspGDH), as well as recombinant Glomerella cingulata glucose dehydrogenase (rGcGDH).

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Author(s): Najat Beden Harishchandra Digambar Jirimali Woonsup Shin Roland Ludwig Clemens K Peterbauer Lo Gorton

Keywords

Composite PVP-Os-(bpy)2-Cl/chitosan, Chitosan, GDH, PDH, CDH, Potentiometry, Voltammetry, Analytical Methods

 
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