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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/40958

    Título
    Monitoring the phenolic ripening of red grapes using a multisensor system based on metal-oxide nanoparticles
    Autor
    García Hernández, CeliaAutoridad UVA
    Medina Plaza, CristinaAutoridad UVA
    García Cabezón, Ana CristinaAutoridad UVA Orcid
    Blanco Val, María YolandaAutoridad UVA Orcid
    Fernández Escudero, José AntonioAutoridad UVA
    Barajas Tola, EnriqueAutoridad UVA
    Rodríguez Pérez, Miguel ÁngelAutoridad UVA Orcid
    Martín Pedrosa, FernandoAutoridad UVA Orcid
    Rodríguez Méndez, María LuzAutoridad UVA Orcid
    Año del Documento
    2018
    Editorial
    Frontiers
    Descripción
    Producción Científica
    Documento Fuente
    Frontiers in Chemistry, 2018, vol. 6. 8 p.
    Resumen
    The maturity of grapes is usually monitored by means of the sugar concentration. However, the assessment of other parameters such as the phenolic content is also important because the phenolic maturity has an important impact on the organoleptic characteristics of wines. In this work, voltammetric sensors able to detect phenols in red grapes have been developed. They are based on metal oxide nanoparticles (CeO2, NiO, and TiO2,) whose excellent electrocatalytic properties toward phenols allows obtaining sensors with detection limits in the range of 10−8 M and coefficients of variation lower than 7%. An electronic tongue constructed using a combination of the nanoparticle-based sensors is capable to monitor the phenolic maturity of red grapes from véraison to maturity. Principal Component Analysis (PCA) can be successfully used to discriminate samples according to the ripeness. Regression models performed using Partial Least Squares (PLS-1) have established good correlations between voltammetric data obtained with the electrochemical sensors and the Total Polyphenolic Index, the Brix degree and the Total Acidity, with correlation coefficients close to 1 and low number of latent variables. An advantage of this system is that the electronic tongue can be used for the simultaneous assessment of these three parameters which are the main factors used to monitor the maturity of grapes. Thus the electronic tongue based on metal oxide nanoparticles can be a valuable tool to monitor ripeness. These results demonstrate the exciting possible applications of metal oxide nanoparticles in the field of electronic tongues.
    Materias Unesco
    2303 Química Inorgánica
    Palabras Clave
    Electronic tongue
    Lengua electrónica
    Phenolic maturity
    Maduración fenólica
    Grapes
    Uvas
    ISSN
    2296-2646
    Revisión por pares
    SI
    DOI
    10.3389/fchem.2018.00131
    Patrocinador
    Ministerio de Economía, Industria y Competitividad - Fondo Europeo de Desarrollo Regional (project AGL2015-67482- R)
    Junta de Castilla y Leon - Fondo Europeo de Desarrollo Regional (project VA011U16)
    Junta de Castilla y León (grant BOCYL-D-24112015-9)
    Version del Editor
    https://www.frontiersin.org/articles/10.3389/fchem.2018.00131/full
    Propietario de los Derechos
    © 2018 Frontiers
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/40958
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
    Aparece en las colecciones
    • BioEcoUVa - Artículos de revista [195]
    • DEP63 - Artículos de revista [322]
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    Monitoring-the-phenolic-ripening.pdf
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