A novel method for flow injection analysis of total antioxidant capacity using enzymatically produced ABTS*+ and biamperometric detector containing interdigitated electrode.

Application of interdigitated array microelectrodes as electrochemical sensors for determination of antioxidant capacity is reported. Electrochemical measurements with interdigitated electrodes (IDE) were studied in both stationary solutions and the flow system. The method is based on biamperometric measurements using ABTS(*+)|ABTS redox couple in phosphate buffer solution, pH 7.