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Methods of precooling for fresh cod (Gadus morhua) and influences on quality during chilled-storage at -1.5°C.

Méthodes de pré-refroidissement de la morue fraîche (Gadus morhua) et influences sur la qualité pendant l'entreposage frigorifique à -1,5 °C.

Numéro : pap. C3-092

Auteurs : GAO H. Y., ARASON S., WANG Q. K., et al.

Résumé

The demand for fresh fish has been increased during these years. The objective of this work was to evaluate the influences of different pre-cooling methods: slurry ice, CBC (combined blast and contact freezing) and usage of cooling mats on quality for fresh cod fillets during further storage at -1.5 ± 0.5°C. Analysis of variance (Anova) was carried out on QDA data in the statistical program NCSS 2000 (NCSS, Utah, USA). PCA (principal component analysis) was performed both for QDA and comparison of measurements in the program Uncrambler (Version 9.5, CAMO Trondheim, Norway). During the early storage period all of the three different cooling methods slowed down the rate of formation of TVN and TMA spoilage compared to the group without any cooling method applied. The three pre-cooling methods had similar effects on prohibition of growth of bacteria if hygienic handling with slurry ice was performed. The treatment with slurry ice and further chilled storage had an effect on prolonging the process from neutral quality to spoilage with regard to sensory results. According to QDA scores, groups A, B and C had passed their shelf life on storage day 17, but group D on storage day 14.

Documents disponibles

Format PDF

Pages : 9 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Methods of precooling for fresh cod (Gadus morhua) and influences on quality during chilled-storage at -1.5°C.
  • Identifiant de la fiche : 30005157
  • Langues : Anglais
  • Source : ACRA2010. Asian conference on refrigeration and air conditioning: Tokyo, Japan, June 7-9, 2010.
  • Date d'édition : 07/06/2010

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