Estimation of chemical continents of lateral muscles for teleost fish species collection from supermarket in Misurata, Libya

Abstract

The current study was conducted on four teleost species. The chemical content was detected, protein precipitation and identified types of myofibres in the lateral muscles of study fishes. Furthermore, studying the concentration of essential metals in the lateral muscles in Pagrus pagrus, Sparisoma cretense, Siganus rivulatus and Euthynnus alletteratus. Essential metals were estimated by Flame photometer (JENWAY, No: 11573), in the Biological Research Center (Faculty of science, Misurata university). The present study indicated that, a difference in the percentage of chemical content between the studded fishes. Where the highest percentage of protein content  in myofibrils of P. pagrus (23.18%), while the percentage was lowest in S. cretense (23.03%). Lipid content in all the four species ranged between 7.64-8.47. While the percentage of ash was highest in S. cretense (2%) and the lowest in S. rivulatus (1%). The percentage of moisture content in all the four species ranged between 75.07-79.73%. Moreover, there was a variation in the relationship between the essential metals (Ca, K and Na) and continental of proteins in all myofibrils of fishes. in conclusion, The chemical content of lateral muscles were different between fish species can be used to taxonomic criterion to differentiate among fishes