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Revista de biología marina y oceanografía

On-line version ISSN 0718-1957

Abstract

MOUSSA DORGHAM, Mohamed et al. Biochemical composition of the nereidid Perinereis cultrifera from the Egyptian Mediterranean Coast. Rev. biol. mar. oceanogr. [online]. 2015, vol.50, n.3, pp.535-543. ISSN 0718-1957.  http://dx.doi.org/10.4067/S0718-19572015000400011.

The present study documents the seasonal biochemical composition of the nereidid polychaete Perinereis cultrifera (carbohydrates, protein, lipids, fatty acids and amino acids) collected from a shallow area on the Alexandria coast, southeast Mediterranean. The results of this study showed that P. cultrifera contained 85.34-87.76% of the wet weight as water, 14.7-20.53% of dry weight (DW) as ash, 8.3-14.84% of DW as carbohydrates, 57.33-59.9% of DW as protein and 11.59-13.36% of DW as lipids. The total fatty acids varied seasonally from 45.9 to 100% of the total lipids with the absolute dominance (37.44-91.53%) of the polyunsaturated eicosapentaenoic acid (EPA) (C20:5n-3), accompanied by a small amount of the saturate stearic acid (C18:0). Eighteen amino acids were identified, including 10 essential (59.62-61.02% of protein) and 8 nonessential (38.98-40.38% of protein).

Keywords : Carbohydrates; lipids; fatty acids; amino acids.

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