Sarcoplasmic Reticulum Ca 2+ ‐ATPase and Cytochrome Oxidase as Indicators of Frozen Storage in Cod ( Gadus morhua)
ABSTRACT: Activities of 2 membrane‐bound enzymes, Ca 2+ ‐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...
| Published in: | Journal of Food Science |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
2003
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1111/j.1365-2621.2003.tb07064.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2621.2003.tb07064.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1365-2621.2003.tb07064.x/fullpdf |
| Summary: | ABSTRACT: Activities of 2 membrane‐bound enzymes, Ca 2+ ‐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. |
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