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Changes in some components of the muscle lipids of three freshwater fish species under natural extreme cold and temperate conditions
- Source :
- Fish physiology and biochemistry. 34(4)
- Publication Year :
- 2007
-
Abstract
- Fatty acid composition, conjugated linoleic acid and cholesterol contents in the muscles of three freshwater fish species (Barbus plebejus escherichi, Capoeta capoeta capoeta and Rutilus rutilus) were determined under natural extreme temperate (July) and cold (January) conditions. The aim of the study was to determine whether there were differences in these components of the muscle lipids among these three fish species under extreme natural conditions. Samples were analyzed using gas chromatography. Palmitic, oleic, docosahexaenoic and eicosapentaenoic acids were the predominant fatty acids in all fish in both months. The percentages of polyunsaturated fatty acids, n - 3 polyunsaturated fatty acids, n - 6 polyunsaturated fatty acids and eicosapentaenoic + docosahexaenoic acids in the muscle of B. plebejus escherichi and C. capoeta capoeta were significantly higher in January (P < 0.05) than in July. The ratio of n - 6 to n - 3 polyunsaturated fatty acids was lower than 0.60 in all fish species, with C. capoeta capoeta showing the lowest ratio in January (0.36). The levels of cholesterol and conjugated linoleic acid ranged from 103.46 to 150.10 mg/100 g oil and from 16.27 to 35.45 mg/100 g oil, respectively, for all samples in both months. There were no statistical differences in cholesterol levels among the three fish species in July and January. Conjugated linoleic acid contents were significantly higher in January in B. plebejus escherichi and C. capoeta capoeta. Of the three species tested, the extreme temperate and cold conditions affected B. plebejus escherichi the most. © Springer Science+Business Media B.V. 2008.
- Subjects :
- Physiology
Conjugated linoleic acid
Cyprinidae
Fresh Water
Aquatic Science
Biochemistry
chemistry.chemical_compound
Barbus plebejus
Species Specificity
Botany
Animals
Linoleic Acids, Conjugated
Food science
Muscle, Skeletal
Capoeta capoeta
chemistry.chemical_classification
Gas chromatography
biology
Cholesterol
Fatty Acids
Temperature
General Medicine
biology.organism_classification
Cold Temperature
Capoeta
chemistry
Freshwater fish
Fatty Acids, Unsaturated
Seasons
Rutilus
Polyunsaturated fatty acid
Subjects
Details
- ISSN :
- 15735168
- Volume :
- 34
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Fish physiology and biochemistry
- Accession number :
- edsair.doi.dedup.....ff59111bb77d8a3a59f8106542f79e6a