Influence of chilled and frozen storage on the stability of trout and herring fillet

Beyrer, Michael and Rüsch, Mark (2006) Influence of chilled and frozen storage on the stability of trout and herring fillet. Informationen aus der Fischereiforschung = Information on Fishery Research, 53(1), pp. 27-34. DOI: 10.3220/Infn53_27-34_2006

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Official URL: http://aquacomm.fcla.edu/2968/

Abstract

Effects of chilled and frozen storage on specific enthalpy (ΔH) and transition temperature (Td) of protein denaturation as well as on selected functional properties of muscle tissue of rainbow trout and herring were investigated. The Td of myosin shifted from 39 to 33 °C during chilling of trout post mortem, but was also influenced by pH. Toughening during frozen storage of trout fillet was characterized by an increased storage modulus of a gel made from the raw fillet. Differences between long term and short term frozen stored, cooked trout fillet were identified by a compression test and a consumer panel. These changes did not affect the Td and ΔH of heat denaturation during one year of frozen storage at –20 °C. In contrast the Td of two myosin peaks of herring shifted during frozen storage at –20 °C to a significant lower value and overlaid finally. Myosin was aggregated by hydrophobic protein-protein interactions. Both thermal properties of myosin and chemical composition were sample specific for wild herring, but were relative constant for farmed trout samples over one year. Determination of Td was very precise (standard deviation <2 %) at a low scanning rate (≤ 0.25 K·min-1) and is useful for monitoring the quality of chilled and frozen stored trout and herring.

Item Type: Article
Title: Influence of chilled and frozen storage on the stability of trout and herring fillet
Personal Creator/Author:
CreatorsEmail
Beyrer, Michaelbeyrer@hs-nb.de
Rüsch, Mark
Refereed: No
Journal or Publication Title: Informationen aus der Fischereiforschung = Information on Fishery Research
Volume: 53
Number: 1
Page Range: pp. 27-34
Date: 2006
ISSN: 1861-2164
Contact Email Address: beyrer@hs-nb.de
Issuing Agency: Bundesforschungsanstalt für Fischerei
Additional Information: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung - Information Fishery Research in 2010. University of Applied Sciences, Department of Technology, PB 110121, 17041 Neubrandenburg, Germany
Uncontrolled Keywords: Clupea harengus; Oncorhynchus mykiss; storage time; chemical comosition;denatuartion; protein;
Subjects:
Fisheries
Chemistry
Item ID: 2968
Depositing User: Horst Bahl
Date Deposited: 10 Mar 2010 12:34
Last Modified: 29 Sep 2011 18:05
Related URLs:
URI: http://aquaticcommons.org/id/eprint/2968

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