Abstract: The present invention relates to a new antioxidant sensor based on metallic or metallic oxide modified electrode and its associated method for electrochemically generating hydroxyl radicals and their subsequent use for the electrochemical measurement of antioxidant activities based on hydroxyl radical scavenging properties of the tested sample.

Abstract: The method according to the invention consists of generating an electrochemical signature of the analyzed substance(s), obtained by carrying out a numerical pseudo-titration and to express the result of the measurements in antioxidant power units. It involves the processing of a current-potential response of the oxidation of the analyzed substance(s) by a predefined mathematical dimensionless function representing a virtual and ideal oxidizing agent. The method is useful for the identification and/or detection and/or titration of antioxidant substances in the tested material, including directly on wet biological tissues.

Abstract: The present invention relates to a method for fabricating a nucleic acid composite material, and to a sensor fabricated with this composite material. This composite material sensor can be used as the working electrode in a conventional electrochemical system, for the measurement of any nucleic acid modifying factors. Protective and/or damaging effects of oxidants/anti-oxidants present in the solution can then be analyzed based on their action on nucleic acids.