Chemical composition, fatty acids profile and cholesterol content of commercialized marine fishes captured in Northeastern Atlantic

Nogueira, Natacha; Cordeiro, Nereida; Aveiro, Maria João

http://hdl.handle.net/10400.13/3349

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Authors

Nogueira, Natacha

Cordeiro, Nereida

Aveiro, Maria João

Abstract(s)

Information available on the chemical composition and nutritional value of commercialized marine fish is very limited. The aim of this study was to investigate major nutrients of raw fish muscle and liver. Protein, moisture ash and lipid content were estimated for 14 commercialized species captured in Northeastern Atlantic. Proximate compositions were found to be varied among the studied species. Cluster analysis revealed two major groups based on proximate composition. Pontinus kuhlii and Trachurus picturatus formed one group, while the second group was formed by ten other species. Protein content was high in all species, varying between 18.51% in Phycis phycis and 32.69 % in Diplodus sargus. Fat content, on the other hand, was low and fish could be considered lean (lipid content <4%). Muscle fatty acid compositions consisted of 26.2-35.8% saturated fatty acids (SFA), 10.5-37.6% monounsaturated fatty acids (MUFA) and 28.7-57.5% polyunsaturated fatty acids (PUFA). Fish livers presented lower amounts of PUFA’s than muscles, mainly due to a reduction of the docosahexaenoic acid (DHA) content. Cholesterol content in liver revealed significant differences, ranging from 0.05 ±0.01 mg/g in Scorpaena scrofa to 7.58 ±0.19 mg/g in Aphanopus carbo. In fish muscle, cholesterol was low and was not correlated with lipids, fatty acids or PUFA content of the muscle.

Keywords

Chemical composition Cholesterol Fatty acids profile Lipids Seawater fish Northeastern Atlantic . Faculdade de Ciências Exatas e da Engenharia

URI

http://hdl.handle.net/10400.13/3349

Citation

Nogueira, N., Cordeiro, N., & Aveiro, M. J. (2013). Chemical composition, fatty acids profile and cholesterol content of commercialized marine fishes captured in Northeastern Atlantic. Journal of FisheriesSciences. com, 7(3), 271.