JOURNAL of the Tunisian Chemical Society

serving the Research, the Education and the Industry

Global chemical composition of the Mediterranean horse mackerel Trachurus mediterraneus: Variations according to muscle type and fish sex

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This work investigates the global chemical composition of the Mediterranean horse mackerel Trachurus mediterraneus (Steindachner, 1863), a coastal catch fish of the Gulf of Gabes (Tunisia). The moisture, protein, fat and ash contents variations of the fish muscle, according to the sex and the muscle type (white and red muscles) were examined. The global chemical composition of the eviscerated fish was also determined. These variations are considerable as regards moisture and fat contents. The male of eviscerated Trachurus mediterraneus presents a slightly more elevated fat content than the female (2.20 ± 0.01 against 1.60 ± 0.01 %). Calcium and sodium contents are high (234.51 ± 19.01 and 135.36 ? 26.29 mg / 100 g respectively) whereas those of iron and magnesium are low (1.43 ± 0.19 and 28.74 ? 5.25 mg / 100 g respectively). Unlike the red muscles which are rich in fat (9.86 ± 0.01 %), the white muscles are rich in moisture and protein (73.93 ± 0.70 % and 24.78 ± 0.14 % respectively).

I. Ketata Khitouni, N. Boudhrioua Mihoubi, A. Abdelmouleh, A. Bouain

Trachurus mediterraneus, global chemical composition, mineral elements, sex, muscle

Pages 123-132

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