Glucose Oxidase-Immobilized Benzoquinone-Carbon Paste Electrode as a Glucose Sensor

Abstract

Glucose oxidase was immobilized on the surface of a p-benzoquinone-carbon paste electrode by coating the enzyme-loaded surface with a nitrocellulose film. The electrode was able to oxidize glucose electrocatalytically. It showed high current response to glucose, and was stable for more than a week. The electrode can be used as a glucose sensor that is relatively insensitive to variations of oxygen tension in sample solutions.