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DIGITAL.CSIC
Doctoral thesis . 2018 . Peer-reviewed
Data sources: DIGITAL.CSIC
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Docta Complutense
Doctoral thesis . 2016
Data sources: Docta Complutense
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Desarrollo de metodología para estimar la calidad del músculo de merluza ("Merluccius merluccius L.") conservado en estado congelado. Aplicación de la relaxometría ₑH RMN de bajo campo

Authors: Sánchez Valencia, Javier;

Desarrollo de metodología para estimar la calidad del músculo de merluza ("Merluccius merluccius L.") conservado en estado congelado. Aplicación de la relaxometría ₑH RMN de bajo campo

Abstract

[ES]: La calidad de un alimento se puede estimar en base a unos indicadores que pueden ser cuantificados mediante diferentes métodos analíticos y que suelen ser específicos para cada producto. Es deseable que los indicadores utilizados se obtengan por métodos instrumentales rápidos, no destructivos y no invasivos. La espectroscopía permite idealmente de forma no destructiva o sin tratamiento previo del producto determinar varias propiedades o compuestos simultáneamente y monitorizar sus cambios en función de los tratamientos tecnológicos al que éste ha sido sometido. Una de estas espectroscopías es la Resonancia Magnética Nuclear del protón (1H RMN) de bajo campo. Los productos de la pesca son muy perecederos por lo que es necesario aplicar frío inmediatamente para evitar su deterioro y la conservación en estado congelado es un método muy efectivo para prolongar su vida útil, ya que disminuye la velocidad de muchos procesos físico-químicos y paraliza el crecimiento microbiano. Sin embargo en función del método de congelación utilizado, el tiempo y temperatura de conservación, la especie, el procesado previo a la congelación, etc., pueden ocurrir diferentes alteraciones en el producto que se traduzcan en una pérdida de calidad pudiendo llegar al fin de su periodo de vida comercial o al rechazo por parte del consumidor.

[EN]: Food quality can be estimated based on indicators that can be quantified by different analytical methods that are usually specific to each product. It is desirable that these indicators are obtained by rapid, non-destructive and non-invasive instrumental methods. Ideally, spectroscopy allows non-destructively or without pretreatment of the product to determine various properties or compounds simultaneously and to monitor changes in food products occuring due to technological treatments given to the food. One of these spectroscopies is low field nuclear magnetic resonance of proton (1H NMR). Fishery products are highly perishable, so it is necessary to apply low temperatures immediately to prevent deterioration. Frozen storage is a very effective method to prolong shelf life, as it decreases the rate of many physical and chemical processes and paralyzes microbial growth. However depending on the freezing method used, time and storage temperatures, the species, type of processing prior to freezing, etc., changes in the product can occur, that result in a loss of quality, and the product may reach the end of their shelf life or be rejected by consumers.

Esta Tesis Doctoral ha sido realizada gracias a una beca de Formación de Personal Investigador (FPI) referencia BES-2008-007283 otorgada a D. Javier Sánchez Valencia dentro del programa de formación de personal investigador de la convocatoria de 2008. El trabajo de Tesis ha sido realizado dentro del proyecto “Desarrollo de metodología para el control de la historia térmica de merluza congelada por espectroscopía vibracional” Investigador principal: Mercedes Careche. Octubre 2007-Diciembre 2010. MEC. AGL2007 ─ 65661.

Memoria para optar al grado de Doctor presentada por Javier Sánchez Valencia, y que ha sido realizada en el ICTAN.

Peer Reviewed

Country
Spain
Keywords

Frozen fish, Bromatología, 3105.02 Piscicultura, Pescado congelado, Bromatología (Veterinaria), 664.8-037(043.2), Piscicultura

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Green