Polypyrrole-based enzyme electrode with immobilized glucose oxidase for electrochemical determination of glucose

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Назив:	Polypyrrole-based enzyme electrode with immobilized glucose oxidase for electrochemical determination of glucose
Аутори:	Jugović, Branimir Grgur, Branimir Antov, Mirjana Knežević-Jugović, Zorica Stevanović, Jamina Gvozdenović, Milica
Датум издавања:	2016
Издавач:	Elsevier
Часопис:	International Journal of Electrochemical Science
Сажетак:	Polypyrrole enzyme electrode was formed by immobilization of glucose oxidase via glutaraldehyde into electrochemically synthesized polypyrrole on glassy carbon electrode. Electrochemical synthesis was performed in 0.5 mol dm-3 HCl and 0.2 mol dm-3 pyrrole at constant current density of 2 mA cm-2. Chronopotentiometric curves of polypyrrole enzyme electrode were recorded at current density of 42 nA cm-2 for different glucose concentrations. The determined value of the apparent Michaelis-Menten constant was 0.045 mmol dm-3 which is significantly lower than that of free enzyme indicating enhanced enzyme efficiency when it is immobilized into electroconducting polymer matrix.
URI:	https://open.uns.ac.rs/handle/123456789/5232
ISSN:	14523981
DOI:	https://doi.org/10.1016/S1452-3981(23)15912-8
Налази се у колекцијама:	TF Publikacije/Publications