NON ENZYMATIC ELECTROCHEMICAL DETECTION OF GLUCOSE AT RICE STARCH-NANOPARTICLES MODIFIED ELECTRODE

Abstract

The need for a more rapid, reliable, specific, and sensitive non enzymatic method of detecting of glucose, at low cost is the focus of this work. In this paper, nanoparticles obtained from rice starch (RSNP) have been used to fabricate an electrode for electrochemical detection of glucose. The voltammetric behaviour of glucose on RSNP electrode was investigated by cyclic voltammetry and differential pulse voltammetry. The oxidation peak currents showed a linear range from 10^-2 to 10^-6 M glucose with correlation coefficient ( R² = 0.99753 ). The biosensor shows a short response time of 7s and lower detection limit of 0.1 µM. The RSNP modified electrode in the determination of glucose in acidic solution demonstrated that it has the potential to speed up the detection, increase specificity and sensitivity throughout the analysis.