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Please use this identifier to cite or link to this item: http://uvadoc.uva.es/handle/10324/21106
Title: Evaluation of red wines antioxidant capacity by means of a voltammetric e-tongue with an optimized sensor array
Authors: Cetó, Xavier
Apetrei, C.
Del Valle, Manel
Rodríguez Méndez, María Luz
Issue Date: 2014
Publisher: Elsevier
Description: Producción Científica
Citation: Electrochimica Acta, Febrero 2014, vol. 120, p. 180-186
Abstract: In this work, two sets of voltammetric sensors -prepared using different strategies- have been combined in an electronic tongue to evaluate the complete antioxidant profile of red wines. To this aim, wine samples were analyzed with the whole set of sensors. In order to reduce the large dimensionality of the data set while keeping the relevant information provided by the sensors, two different methods of feature selection and data compression were used (the kernels method and Discrete Wavelet Transform feature extraction method). Then, the coefficients obtained were used as the input variables of Principal Component Analysis (to evaluate the capability of discrimination. Partial-least squares regression (PLS) and artificial neural networks (ANNs) were performer to build the quantitative prediction models that allowed the quantification of the antioxidant capacity of the tested wines.
Keywords: antioxidants
Electronic tongue
polyphenols
voltammetric sensors
wine
ISSN: 00134686
Peer Review: SI
DOI: 10.1016/j.electacta.2013.12.079
Sponsor: Spanish Ministry of Science and Innovation, MICINN (Madrid) a través de los proyectos CTQ2010-17099 y AGL2009-12660/ALI, Junta de Castilla y León (VA032U13) y programa ICREA Academia
Rights Owner: Elsevier B.V.
Language: eng
URI: http://uvadoc.uva.es/handle/10324/21106
Rights: info:eu-repo/semantics/embargoedAccess
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Appears in Collections:DEP63 - Artículos de revista

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