Veränderungen der Farbe und thermischen Stabilität der Muskelproteine von Räucherforellen während der Kühllagerung

Schubring, Reinhard (2006) Veränderungen der Farbe und thermischen Stabilität der Muskelproteine von Räucherforellen während der Kühllagerung. Informationen aus der Fischereiforschung = Information on Fishery Research, 53(1), pp. 52-58. DOI: 10.3220/Infn53_52-58_2006

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Official URL: http://aquacomm.fcla.edu/2979/

Abstract

The aim of the investigation was to prove if different farming conditions like conventional and organical farming of rainbow trout may cause differences in quality which are detectable by physical methods such as colour measurement and differential scanning calorimetry. Colour measurement revealed remarkable differences in lightness. Smoked trouts originating from conventionally farmed fish were much lighter than those of organically farmed trouts. This difference in L* could already be found when colour measurements were taken on the raw material. However, during chilled storage differences were equalized. Redness and yellowness were not significantly influenced by farming and did not change remarkably during chill storage. Based on earlier investigations on changes in thermal stability caused by heating, DSC curves of smoked trout could be used to verify that the core temperature of smoked fish had reached at least 60 °C during hot smoking process. This temperature is demanded by the guidelines of the German Food Code. In the DSC curves only the actin peak was still visible. All other proteins were obviously denatured during the hot smoking. When DSC curves were taken from smoked trout after different durations of chilled storage it could be seen that the denaturation temperature of actin decreased almost linearly with progression of storage time.

Item Type: Article
Title: Veränderungen der Farbe und thermischen Stabilität der Muskelproteine von Räucherforellen während der Kühllagerung
Personal Creator/Author:
CreatorsEmail
Schubring, Reinhardreinhard.schubring@mri.bund.de
Refereed: No
Journal or Publication Title: Informationen aus der Fischereiforschung = Information on Fishery Research
Volume: 53
Number: 1
Page Range: pp. 52-58
Date: 2006
ISSN: 1861-2164
Contact Email Address: reinhard.schubring@mri.bund.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. Max-Rubner-Institut, Bundesforschungsinstitut für Ernährung und Lebensmittel, Institut für Sicherheit und Qualität bei Milch und Fisch
Uncontrolled Keywords: quality control; quality; difference; aquaculture; organic; conventional;
Subjects:
Chemistry
Item ID: 2979
Depositing User: Horst Bahl
Date Deposited: 10 Mar 2010 12:40
Last Modified: 29 Sep 2011 18:07
Related URLs:
URI: http://aquaticcommons.org/id/eprint/2979

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