Rev. biol. mar. oceanogr. 50(3): 535-543

Article

Biochemical composition of the nereidid Perinereis cultrifera from the Egyptian Mediterranean Coast

Esta dirección de correo electrónico está siendo protegida contra los robots de spam. Necesita tener JavaScript habilitado para poder verlo.¹, Rasha Hamdy¹, Hoda Hassan¹ Al-Rasheedy¹ and Manal Mohamed Atta¹

¹Department of Oceanography, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt

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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).

Key words:  Carbohydrates, lipids, fatty acids, amino acids