Nutritional Analysis of Rainbow Trout (Oncorhynchus mykiss): A Comprehensive Study

Abstract

This study presents a comprehensive nutritional analysis of farmed rainbow trout (Oncorhynchus mykiss). The investigation encompasses the proximate composition, amino acid, fatty acid, vitamin, and mineral profiles of the fish flesh. The results confirm that rainbow trout is an exceptional protein source, exhibiting a protein content of 72% on a dry weight basis. Notably, the essential amino acids lysine (4.46%) and leucine (4.29%) are present in substantial proportions. The flesh contains a fat content of 5.83%, with a fatty acid profile characterized by notable concentrations of linoleic acid (1.17%), docosahexaenoic acid (DHA) (0.51%), and eicosapentaenoic acid (EPA) (0.10%). The vitamin analysis reveals a high concentration of vitamin B3 (152.37 mg/100g), while the mineral assessment indicates a predominant potassium content (12,077.87 mg/kg). Furthermore, the moisture and ash content of the rainbow trout flesh are estimated to be 8.32% and 6.09%, respectively. These findings provide valuable insights into the nutritional value of rainbow trout, contributing significantly to our understanding of its potential benefits for human consumption and aquaculture research.