Effect of Codend Design and Postponed Bleeding on Hemoglobin in Cod Fillets Caught by Bottom Trawl in the Barents Sea Demersal Fishery
Permanent lenke
https://hdl.handle.net/10037/26921Dato
2022-08-03Type
Journal articleTidsskriftartikkel
Peer reviewed
Forfatter
Jensen, Tonje Kristin; Tobiassen, Torbjørn Inge; Heia, Karsten; Møllersen, Kajsa; Larsen, Roger B.; Esaiassen, MargretheSammendrag
Previous studies have reported that cod caught using a newly developed dual
sequential codend showed significant reduction in external catch-related
damage compared to cod caught by a conventional codend. In this study, it
was investigated whether this new codend affects residual blood in cod fillets
and/or mitigates the effect of postponed bleeding. Residual blood was
assessed by measuring hemoglobin using VIS/NIR hyperspectral imaging. No
significant differences in hemoglobin content between fish caught by the two
different codends were proven, and this was true for whole fillets and fillet
compartments (loin, belly, and tail). However, a significant effect of postponed
bleeding on the hemoglobin concentration in cod was demonstrated, and this
effect was similar whether the fish was caught using the conventional or the
sequential codend. Fish bled 40 min after catch had significantly higher levels
of hemoglobin compared to fish bled immediately after catch. When comparing the hemoglobin content in the different fillet sections, significantly higher
levels of hemoglobin were found in the belly compared to the loin and tail.
Forlag
Taylor & FrancisSitering
Jensen, Tobiassen, Heia, Møllersen, Larsen, Esaiassen. Effect of Codend Design and Postponed Bleeding on Hemoglobin in Cod Fillets Caught by Bottom Trawl in the Barents Sea Demersal Fishery. Journal of Aquatic Food Product Technology. 2022Metadata
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