Indicadores de calidad sanitaria y del deterioro en filetes de dorada (Spaurus Aurata) refrigerados sometidos a un tratamiento de agua ozonizada y sal de glicina

Autores/as

  • María Jesús Periago Castón Universidad de Murcia
  • Marina Santaella Pascual Universidad de Murcia
  • Carmen Martínez-Graciá Universidad de Murcia
  • I. Navarro-González Universidad de Murcia
  • C. Puche Universidad de Murcia
Palabras clave: dorada, nbvt, n-tma, bacterias del deterioro, calidad microbiológica

Resumen

En el presente trabajo hemos estudiado el efecto del lavado con agua ozonizada y el lavado por inmersión durante 2 min con una solución de sal sódica de glicina comercial a una concentración de 5 ppm, sobre los parámetros de calidad de los filetes de dorada (Sparus aurata). Los filetes de dorada con ambos tratamientos fueron envasados individualmente y almacenado en hielo, realizando los análisis a tiempo cero a los 6, 10 y 17 días de almacenamiento. Como indicadores químicos fueron analizadas las concentraciones de Nitrógeno Básico Volátil Total (NBVT) y Nitrógeno de Trimetilamina (N-TMA). Para evaluar la calidad microbiológica se aislaron y cuantificaron los microorganismos marcadores de higiene (aerobios mesófilos totales, Enterobacteriaceae y coliformes) y microorganismos específicos del deterioro del pescado (Pseudomonas spp., Brochotrix thermosphacta y Shewanella putrefaciens). Durante el almacenamiento en refrigeración se observó un incremento significativo de los diferentes grupos microbianos y de los indicadores químicos de calidad en los filetes de dorada, alcanzando valores inaceptables a partir de los 10 días de almacenamiento. De forma general, la utilización de la sal de glicina comercial a 5 ppm no tiene un efecto en la disminución de los microorganismos alterantes de los filetes de dorada, en comparación con los filetes tratados con agua ozonizada, aunque sí se observó una ralentización en el crecimiento de Enterobacterias.

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Publicado
20-03-2019
Cómo citar
Periago Castón, M. J., Santaella Pascual, M., Martínez-Graciá, C., Navarro-González, I., & Puche, C. (2019). Indicadores de calidad sanitaria y del deterioro en filetes de dorada (Spaurus Aurata) refrigerados sometidos a un tratamiento de agua ozonizada y sal de glicina. Anales de Veterinaria de Murcia, 32, 45–58. Recuperado a partir de https://revistas.um.es/analesvet/article/view/369171
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