title: Determination of polyphenol content and colour index in wines through PEDOT-modified electrodes.
abstract: Poly(3,4-ethylenedioxythiophene)-modified electrodes have been used for the estimation of the polyphenolic content and of the colour index of different samples of wines. Synthetic wine solutions, prepared with different amount of oenocyanins, have been analysed spectrophotometrically and electrochemically in order to find a correlation between the total polyphenolic content or colour index and the current peak. The regression curves obtained have been used as external calibration lines for the analysis of several commercial wines, ranging from white to dark red wines. In this way, a rapid estimation of the total polyphenolic content and of the colour index may be accomplished from a single voltammetric measurement. Furthermore, principal component analysis has also been used to evaluate the effect of total polyphenolic content and colour index on the whole voltammetric signals within a selected potential range, both for the synthetic solutions and for the commercial products. Graphical abstract Electrochemical sensors for the rapid determination of colour index and polyphenol content in wines.
authors.affiliation: Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Via G. Campi 103, 41125, Modena, Italy. laura.pigani@unimore.it.
authors.forename: Laura
authors.initials: L
authors.lastname: Pigani
authors.affiliation: Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Via G. Campi 103, 41125, Modena, Italy.
authors.forename: Cristina
authors.initials: C
authors.lastname: Rioli
authors.affiliation: Dipartimento di Scienze della Vita, Università di Modena e Reggio Emilia, Via Amendola, 2 - Padiglione Besta, 42122, Reggio Emilia, Italy.
authors.forename: Giorgia
authors.initials: G
authors.lastname: Foca
authors.affiliation: Dipartimento di Scienze della Vita, Università di Modena e Reggio Emilia, Via Amendola, 2 - Padiglione Besta, 42122, Reggio Emilia, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Ulrici
authors.affiliation: Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Via G. Campi 103, 41125, Modena, Italy.
authors.forename: Renato
authors.initials: R
authors.lastname: Seeber
authors.affiliation: Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Via G. Campi 103, 41125, Modena, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Terzi
authors.affiliation: Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Via G. Campi 103, 41125, Modena, Italy.
authors.forename: Chiara
authors.initials: C
authors.lastname: Zanardi
mesh_terms: D019086:Bridged Bicyclo Compounds, Heterocyclic / Q000737:chemistry*; D003116:Color; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D011108:Polymers / Q000737:chemistry*; D059808:Polyphenols / Q000032:analysis*; D025341:Principal Component Analysis; D014920:Wine / Q000032:analysis*
chemical_list: D019086:Bridged Bicyclo Compounds, Heterocyclic; D011108:Polymers; D059808:Polyphenols; C121383:poly(3,4-ethylene dioxythiophene)
keywords: Colour index; Differential pulse voltammetry; PEDOT-modified electrodes; Polyphenols; Principal component analysis; Wines