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Muscle Lipids and Fatty Acid Profiles of the Sea Catfish ( Arius madagascariensis ) in Madagascar Inland Waters
Author(s) -
Rasoarahona J. R. E.,
Ramanoelina P. A. R.,
Bianchini J.P.,
Gaydou E. M.
Publication year - 2008
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-008-1211-4
Subject(s) - docosapentaenoic acid , docosahexaenoic acid , polyunsaturated fatty acid , eicosapentaenoic acid , catfish , arachidonic acid , fatty acid , oleic acid , palmitic acid , food science , biology , stearic acid , chemistry , freshwater fish , biochemistry , fishery , fish <actinopterygii> , organic chemistry , enzyme
Muscle lipids and fatty acids (FA) of catfish Arius madagascariensis were determined in catfish caught in the Betsiboka River, Madagascar, during a 5‐month sampling period. Total lipids from muscle were extracted and quantified. Fatty acids were identified by means of gas chromatography–mass spectrometry of FA methyl esters and FA pyrrolidides, leading to the identification of 42 FA. Lipid content was relatively high in our fish sample and ranged from 4.3 to 6.6% of wet muscle. Three FA dominated the FA composition: palmitic acid (C16:0, 22.9–32.6%), oleic acid (C18:1n‐9, 11.3–13.4%) and stearic acid (C18:0, 10.8–12.0%). A number of polyunsaturated FA (PUFA) were present in appreciable amounts, including arachidonic acid (C20:4n‐6, 4.7–7.6%), docosahexaenoic acid (C22:4n‐6, 3.0–8.1%), eicosapentaenoic acid (C20:5n‐3, 0.6–1.0%), n‐3 docosapentaenoic acid (C22:5n‐3, 1.1–1.6%), n‐6 docosatetraenoic acid (C22:4n‐6, 0.7–1.2%) and n‐6 docosapentaenoic acid (22:5n‐6, 0.9–1.8%). The sum of the n‐6 PUFA and n‐3 PUFA was 11.3–18.8 and 7.5–13.4%, respectively. These results indicate that A. madagascariensis , an abundant freshwater fish in Madagascar rivers, may be good source of dietary PUFA.