Glucose-eliminating enzyme electrode for direct sucrose determination in glucose-containing samples

Abstract Direct determination of sucrose in glucose-containing samples is achieved by a multilayer enzyme electrode. The glucose is eliminated by an outer layer containing glucose oxidase and catalase, whilst the sucrose reaches a glucose oxidase—invertase layer, thus producing hydrogen peroxide which is measured by the indicating electrode. Up to 2 mM glucose can be tolerated. Food products were analyzed successfully.