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NÚMERO 3

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Ecología trófica de siete especies de batoideos (Batoidea) en el Pacífico Central Mexicano

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Seaweeds agarophytes and associated epiphytic bacteria along Alexandria coastline, Egypt, with emphasis on the evaluation and extraction of agar and agarose

ARTÍCULO

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

Autores

CORRESPONSAL

Mohamed Moussa Dorgham

mdorgham1947@yahoo.com

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1

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

Rasha Hamdy

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1

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

Hoda Hassan

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1

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

Al-Rasheedy

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1

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

Manal Mohamed Atta

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1

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

Resumen

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).

Palabras clave

Carbohydrates, lipids, fatty acids, amino acids

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