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Analytical Letters Volume 43, 2010 - Issue 10-11: In Memory of Founding
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RESEARCH: BIOANALYTICAL

Investigation of Oxidoreductase Enzyme Catalysis in Water-Ionic Liquid (IL) Solvent Mixtures

Boglárka Takács Department of General and Physical Chemistry, University of Pécs, Ifjúság, Pécs, Hungary
,
Livia Nagy Department of General and Physical Chemistry, University of Pécs, Ifjúság, Pécs, Hungary
,
László Kollár Department of Inorganic Chemistry, University of Pécs, Ifjúság, Pécs, Hungary
&
Géza Nagy Department of General and Physical Chemistry, University of Pécs, Ifjúság, Pécs, HungaryCorrespondence[email protected]
Pages 1734-1745 | Received 04 Aug 2009, Accepted 05 Jan 2010, Published online: 21 Jul 2010
 
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Abstract

The stability and catalytic action of glucose oxidase has been investigated in different water-butyl-methyl imidazolium tetrafluoroborate (BMIM(BF4)) mixtures. A flat amperometric measurement cell was fabricated embedding silver and platinum wires in dental cement. The rate of the enzyme catalyzed reaction was observed amperometrically detecting the hydrogen peroxide produced in the enzyme catalyzed reaction. The arrangement used allowed to carry out one measurement in reaction media volume as small as 12 μl. The rate of the enzyme catalyzed reaction decreased by increasing the BMIM(BF4) content of the solvent. The half life of the enzyme, however, was found longer in BMIM(BF4) containing media measured at different temperatures than in aqueous buffer.

This article was submitted as part of a Special Memorial Issue honoring Prof. George G. Guilbault.

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