Fatty acid composition of phospholipids and triacylglycerols in the flesh of the thick-lipped grey mullet (Chelon labrosus) living in Tunisian geothermal water and seawater: A comparative study





Fatty acid composition, Geothermal water, Phospholipids, Seawater thick-lipped grey mullet (Chelon labrosus), Triacylglycerols


This study was conducted to elucidate the effects of rearing conditions on the composition of different phospholipid (PLs) classes and triacylglycerols (TAG) of the thick-lipped grey mullet (Chelon labrosus), a muscle originating from seawater and geothermal water. The major fatty acids in the examined lipid classes of the two fish groups were palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1n-9), linoleic acid (C18:2n-6), arachidonic acid (C20:4n-6), eicosapentaenoic acid (C20:5n-3), and docosahexaenoic acid (C22:6n-3). The analyses demonstrated that the fatty acid profiles of the PL classes in the seawater fish group were characterized by the predominance of n-3 polyunsaturated fatty acids (PUFA). By contrast, in geothermal fish, the distribution of PUFA series proportions differed between the phospholipid fractions. It was found PUFA n-3 was particularly abundant in PS and PI, while the n-6 series dominated the PC and PE PUFA group. Nonetheless, it was found that neutral lipid fatty acids were characterized by saturated fatty acids (SFA) followed by monounsaturated fatty acids (MUFA) in the seawater fish and by PUFA in the geothermal fish. The results presented here give useful information on the role of lipid classes in the physiological adaptation of C. labrosus which can serve for the optiminzation of these aquaculture systems.


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How to Cite

Rabeh I, Telahigue K, Hajji T, Kheriji S, Besbes A, Besbes R, El Cafsi M. Fatty acid composition of phospholipids and triacylglycerols in the flesh of the thick-lipped grey mullet (Chelon labrosus) living in Tunisian geothermal water and seawater: A comparative study. grasasaceites [Internet]. 2022Mar.30 [cited 2022May23];73(1):e448. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1922