Benzoquinone-mediated enzyme biosensor for amperometric determination of glucose
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An amperometric enzyme sensor for the analysis of glucose is described. The sensor uses benzoquinone as a mediator for electron transfer between immobilized glucose oxidase and a pyrolytic graphite electrode. A linear current response, proportional to glucose concentration in the range 1–50mM, is observed. The influence of oxygen,pH and operating potential on the sensor performance is examined.
KeywordsBenzoquinone amperometric biosensors glucose oxidase enzyme sensor cyclic voltammetry
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