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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/30786

    Título
    Biogenic Amines and Fish Freshness assessment using a multisensor system based on Voltammetric Electrodes. Comparison between CPE and screen printed electrodes
    Autor
    Rodríguez Méndez, María LuzAutoridad UVA Orcid
    Gay Martín, Mónica
    Apetrei, Constantin
    Saja Saez, José Antonio DeAutoridad UVA Orcid
    Siadat, M.
    Año del Documento
    2009
    Descripción
    Producción Científica
    Documento Fuente
    Research on Crops vol. 10 p. 376-379
    Resumen
    The present work relates to a method for determining the degree of freshness of fish by monitoring the production of spoilage products. This method comprises the global detection of the spoilage products including biogenic amines resulting from the degradation of fish by using arrays of voltammetric sensors chemically modified with phthalocyanines. The performance of an array of screen-printed electrodes (SPE) has been compared with that of an array formed by classic carbon paste electrodes (CPE). The sensors have shown good sensitivity towards model solutions of biogenic amines (ammonia, dimethylamine, trimethylamine, cadaverine and histamine). It has been evidenced that the electroactivity and basic character of amines influences considerably the electrochemical behaviour of the electrodic material. The pattern of responses provided by the array has been successfully used to evaluate fish freshness and to determine the post-mortem period. An increase of the signals associated to biogenic amines and other spoilage products is observed with increasing storage days. Signals provided by classical CPE are better resolved and show better sensor-to-sensor reproducibility than SPE. However, the modification of SPE enables simple mass-production of low-cost and miniaturised sensing units with good sensibility and repeatability. The capability of discrimination demonstrated by Principal Component Analysis (PCA) and the capability of prediction of fish freshness calculated by Partial Least Squares-Discriminant Analysis (PLS-DA) is similar in both cases.
    ISSN
    0013-4686
    Revisión por pares
    SI
    DOI
    10.1016/j.electacta.2009.07.024
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/30786
    Derechos
    openAccess
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    • DEP63 - Artículos de revista [322]
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