The present study was supported by the Danish Ministry of Food, Agriculture, and Fisheries. The authors thank Inge Holmberg and Rie Sørensen for technical assistance.
Sarcoplasmic Reticulum Ca2+-ATPase and Cytochrome Oxidase as Indicators of Frozen Storage in Cod (Gadus morhua)
Article first published online: 20 JUL 2006
Journal of Food Science
Volume 68, Issue 8, pages 2579–2585, October 2003
How to Cite
Godiksen, H., Hyldig, G. and Jessen, R. (2003), Sarcoplasmic Reticulum Ca2+-ATPase and Cytochrome Oxidase as Indicators of Frozen Storage in Cod (Gadus morhua). Journal of Food Science, 68: 2579–2585. doi: 10.1111/j.1365-2621.2003.tb07064.x
- Issue published online: 20 JUL 2006
- Article first published online: 20 JUL 2006
- MS 20020611 Submitted 10/25/02, Revised 2/11/03, Accepted 8/21/03.
- cytochrome oxidase;
- frozen storage;
- ice storage;
- SR Ca2+-ATPase
ABSTRACT: Activities of 2 membrane-bound enzymes, Ca2+-ATPase from the sarcoplasmic reticulum and cytochrome oxidase from the inner mitochondria membrane, were measured during frozen storage of cod. Enzyme activities were higher in cod muscle samples frozen at −30°C than at −20°C. Freezing-induced activation of both enzymes was observed and the activation was amplified by ice storage prior to freezing. Sensory evaluation conducted at 9 mo of frozen storage showed differences between the sensory properties of cod frozen immediately after catch and frozen after 3 d of storage on ice. These results indicated that the enzymes might be useful as indicators of quality changes by frozen storage.