ELECTROCHEMICALLY ASSISTED CATALYST FOR ENZYMATIC GLUCOSE-OXIDATION

A catalyst was made by entrapping glucose oxidase in a polymeric film deposited on an electrode surface. Its efficiency was studied by measu ring the transformation of glucose by oxygen into gluconic acid. A num erical model was elaborated and validated with respect to experimental data. The electrochemical step affected the enzymatic catalysis in tw o ways: the reactant oxygen was regenerated, and the product, hydrogen peroxide which is a glucose oxidase inhibitor, was consumed. By monit oring these two concentrations, the electrochemical assistance signifi cantly enhanced catalyst efficiency.