Published 2014

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Publication details

Journal : Journal of Food Science , vol. 79 , p. E881–E886 , 2014

International Standard Numbers :
Printed : 0022-1147
Electronic : 1750-3841

Publication type : Academic article

Contributors : Rotabakk, Bjørn Tore; Bleie, Hogne; Stien, Lars Helge; Roth, Bjørn

Issue : 5

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Kjetil Aune
Chief Librarian


A total of 40 farmed Atlantic cod (Gadus morhua) were in 2 groups either fillet directly after stunning and spray washed or produced into fillets according to traditional slaughter methods including exsanguination for 30 min, gutting and washing. Both groups were either stored superchilled or traditionally on ice. After 7 d postmortem color (CIE L*, a*, b*) and fillet shrinkage was measured by computer imaging along with drip loss and texture hardness. Results show that superchilled fillets had significant lower core temperature than fillets stored on ice during the entire 7 d storage period. This resulted in reduced fillet shrinkage from 14.7% to 6.9% and less drip loss dropping from 9.45% to 3.99% in average. Processing the fish directly into fillets resulted in satisfactory blood drainage, where all groups were in particularly well exsanguinated with a* values below zero. No color difference was observed between filleting groups or chilling methods. Spray washing of the fillets resulted in water uptake and higher drip loss in interaction with chilling method. We conclude that filleting farmed fish in one step is feasible.