Sol-gel-derived prussian blue-silicate amperometric glucose biosensor.

S Bharathi; O Lev

doi:10.1385/abab:89:2-3:209

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Sol-gel-derived prussian blue-silicate amperometric glucose biosensor.

S Bharathi·O Lev

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Abstract

A new type of inorganic biosensor is introduced. The sensor comprises glucose oxidase enzymes encapsulated in a sol-gel-derived Prussian blue-silicate hybrid network. Glucose is detected by the biocatalytic reduction of oxygen followed by catalytic reduction of hydrogen peroxide by the Prussian blue catalyst. The sol-gel silicate entails a rigid encapsulating matrix, the Prussian blue provides chemical catalysis and charge mediation from the reduction site to the supporting electrode, and the enzyme is responsible for the biocatalysis. The feasibility of a dual optical/electrochemical mode of analysis is also demonstrated.

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Biosensing Techniques Calibration Catalysis Coloring Agents Dose-Response Relationship, Drug Electrodes Ferrocyanides Gels Glucose Glucose Oxidase Hydrogen Peroxide Models, Chemical Optics and Photonics Silicates Software Time Factors Journal Article Research Support, Non-U.S. Gov't

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S Bharathi, O Lev. Sol-gel-derived prussian blue-silicate amperometric glucose biosensor.. https://doi.org/10.1385/abab%3A89%3A2-3%3A209

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