Estimation of chemical components and caloric values for muscles of some local fish in Karbala province, Iraq

Abstract

The present work aimed at conducting a comparative study of the chemical components of the muscles of four teleosts in two different regions of each Coptodon zillii belonging to the Cichlidae and members of Cyprinidae, Carabarbus luteus, Cyprinus carpio and Cyprinion macrostomum. This study concentrated on the determination of differences in the values of the chemical components of the muscles and calories for protein and lipid contents. In addition to this, it concentrated on the determination of the nutritional value of the studied fish. Samples were collected between November/2018 and January/2019 from Al-Hindiyia market in Karbala province, Iraq. The results showed that the protein content was higher in the region 1 (R1] compared to the region 2 (R2] while the lipid content of the R2 was higher than that for the R1. These results were associated with the red muscle ratio in the two regions. The total protein content was recorded 19.69% in C. zillii, 25.42% in C.luteus, 21.92% in C. carpio and 23.51% in C.macrostomum while the total lipid content was 4.25% in C. zillii, 2.23% in C. luteus, 4.10% in C. carpio and 6.42% in C. macrostomum. Therefore, the statistical results indicated significant differences (P<0.05] between the studied species in protein and lipid contents, while the differences were not significant (P>0.05] among the C.zillii, C.luteus and C.carpio in the values of moisture content and between the C.luteus and C.macrostomum in ash content values. According to the lipid content values in the studied fish muscles, the C. luteus fish (2.23%] were in a low-lipid fish while the C.carpio (4.10%], C.zillii (4.52%] and C.macrostomum fish(6.24%] were in a medium-lipid fish.