title: Contact probe voltammetry for in situ monitoring of the reactivity of phenolic tomato (Solanum lycopersicum L.) compounds with ROS.
abstract: The application of an in situ electrochemical contact probe methodology for monitoring reactivity of antioxidant polyphenolic compounds in tomato fruits is described. Upon electrochemical generation of reactive oxygen species (ROS), characteristic voltammetric responses were recorded for compounds resulting from the reaction of such species with tomato compounds. This suggests that new electrochemically oxidizable compounds are generated from the oxidation of highly reactive polyphenolic compounds with ROS. Therefore, an evaluation of the antioxidant capacity of such species could be made from voltammetric data for different tomato varieties.
authors.affiliation: Analytical Chemistry Department, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain. Electronic address: antonio.domenech@uv.es.
authors.forename: Antonio
authors.initials: A
authors.lastname: Doménech-Carbó
authors.affiliation: Packaging Lab., Instituto de Agroquímica y Tecnología de Alimentos, IATA-CSIC, Av. Agustín Escardino 7, 46980 Paterna, Valencia, Spain.
authors.forename: Rafael
authors.initials: R
authors.lastname: Gavara
authors.affiliation: Packaging Lab., Instituto de Agroquímica y Tecnología de Alimentos, IATA-CSIC, Av. Agustín Escardino 7, 46980 Paterna, Valencia, Spain.
authors.forename: Pilar
authors.initials: P
authors.lastname: Hernández-Muñoz
authors.affiliation: Packaging Lab., Instituto de Agroquímica y Tecnología de Alimentos, IATA-CSIC, Av. Agustín Escardino 7, 46980 Paterna, Valencia, Spain. Electronic address: idominguez@iata.csic.es.
authors.forename: Irene
authors.initials: I
authors.lastname: Domínguez
mesh_terms: D004563:Electrochemistry / Q000379:methods*; D016166:Free Radical Scavengers / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D018551:Solanum lycopersicum / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D017382:Reactive Oxygen Species / Q000737:chemistry*
chemical_list: D016166:Free Radical Scavengers; D010636:Phenols; D010936:Plant Extracts; D017382:Reactive Oxygen Species
keywords: Antioxidant capacity; Electrochemistry; Polyphenolic compounds; Reactive oxygen species; Tomato varieties