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Valorization of recurrently discarded fish species in trawler fisheries in North-West Spain

AuthorsBlanco Comesaña, M. ; Domínguez-Timón, F.; Pérez Martín, Ricardo Isaac ; Fraguas, Javier; Ramos, Patricia ; Vázquez, José Antonio ; Borderías, A. Javier ; Moreno, H. M.
KeywordsLanding obligation
Fish discards
Fish mince
Fish muscle valorization
Frozen storage
Issue Date2018
CitationJournal of Food Science and Technology 55(11): 4477-4484 (2018)
AbstractThe progressive elimination of fish discards established by the European Union Council in 2013 has stimulated the valorization of flesh from discarded high-quality species with good protein functional properties but which frequently have excessive fish-bones, fat, strange flavours, soft texture, etc. The present study therefore focuses on valorization of the extracted muscle (minced muscle), from several fish species frequently discarded in north-western Spanish fisheries (Atlantic Ocean): Blue whiting (Micromesistius poutassou), Mackerel (Scomber scombrus), Red scorpionfish (Scorpaena scrofa), Pouting (Trisoreptus luscus) and Gurnard (Trigla spp.). Valorization of these discarded fish resources is a key objective for the survival of the fishery sector in this area. In this regard present study was planned to examine the behaviour of the mince during 6 months of frozen storage by means of physicochemical and sensory analyses, and to test consumer acceptance of three technologically different products (burgers, nuggets and structured fingers) prepared with fish mince from different species. Results indicated that protein aggregation started at the outset of frozen storage but progressed very slowly, with the exception of non-washed blue whiting and red scorpionfish minces. Moreover, during frozen storage lipid oxidation increased in all samples; the increase was with two objectives highest in minced mackerel, a fatty fish, but no rancid flavour was detected. All mince samples presented acceptable physicochemical properties and good sensory acceptability after 6 months of frozen storage. Acceptability of final products made with these minces was high in all cases. Burgers were more acceptable for consumers aged over 40 and fingers and nuggets more for younger people
Description8 pages
Publisher version (URL)https://doi.org/10.1007/s13197-018-3376-7
Appears in Collections:(IIM) Artículos
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