Assessment of Ash Content Composition in the Muscles of Economically Important Libyan Marine Fish Species from Tripoli, Libya

Abstract

    This study aims to evaluate the ash content in the muscles of six economically important marine fish species, namely sardine (Sardinella aurita), barracuda (Sphyraena sphyraena), dusky grouper (Epinephelus costae), red seabream (Pagellus erythrinus), chub mackerel (Scomber japonicus), and saddled seabream (Oblada melanura). A total of 18 specimens of each species were obtained from local fishermen at the Tripoli fish market. The mean lengths and weights were as follows: sardine (19.22 cm, 60.17 g), barracuda (32.35 cm, 122.5 g), dusky grouper (25.02 cm, 190.17 g), red seabream (20.55 cm, 119.5 g), chub mackerel (24.35 cm, 139.17 g), and saddled seabream (20.5 cm, 181.67 g). Ash content was determined using the AOAC 938.08 (2005) method, with the objective of quantifying the concentrations of major minerals (Ca, P, Mg, Na, K) and trace elements (Fe, Zn, Cu) in each species studied. The study further seeks to assess the nutritional value of these fish and to discuss the potential application of the findings in improving aquafeed formulations to ensure food safety.