Changes during chilled storage of whole tilapia and short-term frozen storage of tilapia fillets
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Data
2013-05-30
Autores
Viegas, Elisabete Maria MacEdo
Barbieri de Carvalho, Maria Regina [UNESP]
Campagnoli de Oliveira Filho, Paulo Roberto
Kirschnik, Peter Gaberz
Aiura, Felipe Shindy
Vargas, Sheyla Cristina
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Resumo
This study evaluated the physicochemical changes in Nile tilapia (n = 82, 373.71 ± 61.91 g) refrigerated for up to 92 h and in the frozen fillets. The tilapias were captured with nets, slaughtered by ice and water shock (1:1) in a temperature of approximately 2°C for 30 min, and stored refrigerated at 4°C in polystyrene boxes containing ice. The fish were filleted, and filets were weighed and frozen. The drip loss and protein were determined after 23 days of frozen storage. After 4 h of storage, all fish were in full rigor mortis. The pH of the muscles decreased for up to 45 h of the storage period. The fillets obtained from tilapia stored for more than 72 h lost more weight and protein. Thus, the filleting or processing of tilapia should be done before 72 h of cold storage, since deterioration of the fish starts to occur after this period. Copyright © Taylor & Francis Group, LLC.
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Drip loss, Oreochromis niloticus, Quality, Rigor mortis, Shelf life, Chilled storage, Physico-chemical changes, Storage periods, Tilapia fillets, Cold storage, Image quality, Polystyrenes, Proteins, Fish
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Journal of Aquatic Food Product Technology, v. 22, n. 2, p. 192-200, 2013.