Electrochemical Study of the Stevia as an Alternative to the Sugar in Blood Medium Using Nano-Sensor by Cyclic Voltammetry

Abstract

Stevia contains natural compounds that are plant herbs that estimated to be 150–400 times sweeter than saccharide. The study included the effect of different concentrations, different pH in present, and without a present ascorbic acid solution. A potentiostat was used as a cyclic voltammetric technique by a modified glassy carbon electrode (GCE) with multiwall carbon nanotubes (MWCNT) as a nanosensor (MWCNT/GCE) to enhance the oxidation-reduction current peaks of stevia compound in blood medium. The oxidation current peak of stevia appeared at 0.028 gm/ml. The study has been found the safety dose used before oxidation of the blood components from the appearing of oxidation current peak of stevia which characterized at -600 mV. Alkaline blood medium in the presence of ascorbic acid acted as an anti-oxidative reagent with present ascorbic acid by enhanced the reduction current peak at -500 mV, so, stevia compound can be used as a safe sweetener alternative of saccharide.