The analysis of protein, lipid, moisture, ash and heavy metal some fish species consumed in Giresun

This research is conducted to determine the levels of protein, lipid, moisture, ash and heavy metals in the muscle tissue of five different species of fish consumed in Giresun. Heavy metal values in the muscle tissues of the five fish species have been measured by ICP-MS device (Inductively Coupled Plasma-Mass Spectrometer). The average values (%) of protein, lipid, moisture and ash in fish species are analysed seasonally and it is respectively as follows: 12.71, 3.91, 74.68, 1.40 during the winter months and 14.73, 2.21, 78.81, 1.12 during the summer months. The research shows that there is an increase of fat and ash during winter and a decrease in protein and moisture levels. Heavy metal values (ppm) in the muscle tissues of fish are as follows; Cr: 0.861-0.350, Mn: 1.203-2.262, Fe: 27.076-75.789, Co: 0.001-0.075, Ni: 11.581-18.617, Cu: 1.125-4.507, Zn: 19.318-48.061, Cd: 0.004-0.044, Pb: 1.935-4.486, These values are compared to the daily intake which can be tolerated by humans beings. As a result, this study shows that the heavy metal concentration in the five fish species that are found and sold in Giresun is below the daily intake level that can be tolerated by human beings. Keywords: Fish, Protein, Lipid, Moist, Ash, Heavy Metal, Black Sea.