Muscle Lipids and Fatty Acid Profiles of the Sea Catfish (Arius madagascariensis) in Madagascar Inland Waters |
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Authors: | J R E Rasoarahona P A R Ramanoelina J-P Bianchini E M Gaydou |
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Affiliation: | 1. Laboratoire des IAA, Ecole Supérieure des Sciences Agronomiques, Université d’Antananarivo, BP 175, Antananarivo, Madagascar 2. Laboratoire de Chimie Analytique Appliquée, Université de la Polynésie Fran?aise, 98702, Faa’a, Tahiti, French Polynesia 3. Laboratoire de Phytochimie de Marseille, UMR CNRS 6171 Systèmes Chimiques Complexes, Faculté des Sciences et Techniques de Saint-Jér?me, Université Paul Cézanne, Case 461, Avenue Escadrille Normandie-Niémen, 13397, Marseille Cedex 20, France
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Abstract: | 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. |
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Keywords: | Arachidonic acid Ariidae Arius madagascariensis Docosahexaenoic acid Eicosapentaenoic acid Fatty acid Lipid Madagascar PUFA |
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