Variability of fat, water and protein content in the flesh of beaked redfish (Sebastes mentella) and Greenland halibut (Reinhardtius hippoglossoides) from artic fishing grounds
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Beaked redfish (Sebastes mentella) and Greenland halibut (Reinhardtius hippoglossoides) were collected from fishing grounds of the Barents Sea to study the composition and lipid distribution of the muscle tissue. The belly flaps of beaked redfish showed higher lipid contents (mean 4.6%) compared to anterior dorsal muscle. The protein content was relatively constant in all parts (18–19%). The variation in the muscle lipid composition among individual redfish was greater than the variation among different anatomical locations of the fillets. No significant differences were found in the composition of Greenland halibut muscle parts. The protein content was generally low and ranged between 12.2–13.9%. The lipid content varied considerably between approximately 6 and 17%, displaying large variations of the lipid contents between different Greenland halibut individuals from one catch. The variability of lipid content should be considered in the risk assessment and management of lipophilic contaminants in fish fillets. A correlation between water and lipid content was found for both species (r = −0.8750, beaked redfish; r = −0.8732, Greenland halibut).
KeywordsProximate composition Muscle tissue Water–lipid correlation Abdominal flaps Lipophilic contaminants
We would like to thank Dorit Bloch for critically proofreading the manuscript.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.
- Antonacopoulos N (1973) Lebensmittelchemisch-rechtliche Untersuchung und Beurteilung von Fischen und Fischerzeugnissen. In: Ludorff W, Meyer V (eds) Fische und Fischerzeugnisse. Paul Parey, Berlin, p 219Google Scholar
- AOAC (Association of Analytical Chemists) (2005) Method #968.06. In: Horwitz W, Latimer G (eds) Official methods of analysis of AOAC international, 18th edn. AOAC International, GaithersburgGoogle Scholar
- Borresen T (1992) Quality aspects of wild and reared fish. In: Huss HH, Jacobsen M, Liston J (eds) Quality assurance in the fish industry. Proceedings of an international conference, Copenhagen, Denmark, August 1991. Elsevier, Amsterdam, pp 1–17Google Scholar
- Commission Regulation (EC) No 1259/2011 of 2 December 2011 amending Regulation (EC) No 1881/2006 as regards maximum levels for dioxins, dioxin-like PCBs and non dioxin-like PCBs in foodstuffs. Off J Eur Union L 320/18Google Scholar
- Commission Regulation (2017) Commission Regulation (EU) 2017/644 of 5 April 2017. Laying down methods of sampling and analysis for the control of levels of dioxins, dioxin-like PCBs and non-dioxin-like PCBs in certain foodstuffs and repealing Regulation (EU) No 589/2014. Off J Eur Union L 92/9Google Scholar
- FAO (1995) Quality and quality changes in fresh fish. In: Huss HH (ed) FAO Fisheries Technical paper 348, RomeGoogle Scholar
- Fisch-Informationszentrum e. V. (2016) Fischwirtschaft: Daten und Fakten 2016. Fisch-Informationszentrum e.V., Hamburg. www.fischinfo.de. Accessed 05 Apr 2018
- Gristina M, Morizzo G, Bono G, Ragonese S (2006) Biological information on target species: sex-determination, maturation stages and gravimetric indexes. In: MedSudMed. 2006. Report of the workshop on standardization of trawl surveys protocol in the MedSudMed project area. GCP/RER/010/ITA/MSM-TD-04. MedSudMed Technical Documents, vol 4, p 65Google Scholar
- Havforskningsinstituttet (2018) NIFES seafood data entry for Greenland halibut fillet, dioxins and dl-PCBs in 2008. https://sjomatdata.nifes.no/#seafood/416/2/401. Accessed 22 Feb 2018
- ICES (2015) http://www.ices.dk/sites/pub/Publication%20Reports/Advice/2015/2015/ghl-arct.pdf. Accessed 11 Sept 2017
- ICES (2017) http://www.ices.dk/sites/pub/Publication%20Reports/Advice/2017/2017/ghl.27.1-2.pdf. Accessed 31 Aug 2017
- Karl H, Ostermeyer U, Rehbein H, Lehmann I, Manthey-Karl M (2013) Schwankungen von Inhaltsstoffen bei Fischen. Rundschau für Fleischhygiene und Lebensmittelüberwachung 65(4):142–145Google Scholar
- Oehlenschläger J (1992) Rohprotein (N × 6,25)-und wirklicher Proteingehalt von Seefischfilet. Infn Fischw 39(2):89–93Google Scholar
- Paz X, Expósito P (2013) Spanish bottom trawl autumn survey Fletan Artico 2013 in the slope of Svalbard Area, ICES division IIb. http://www.fiskeridir.no/content/download/7341/91792/…/130723.pdf. Accessed 11 Sept 2017