The coastal regions of Odisha are rich in marine biodiversity and contribute significantly to India’s fish production. However, a substantial portion of the total catch is discarded as processing by-products, including fish heads, frames, viscera, skin, and scales. These by-products, though often treated as waste, are rich sources of valuable nutrients such as proteins, lipids, essential fatty acids, and minerals. This study investigates the nutritional composition of selected marine fish processing by-products collected from fish landing centers and processing units along the Odisha coast. Proximate analysis revealed high protein content in frames and heads, significant lipid concentrations in viscera and skin, and notable levels of calcium and phosphorus in bones and scales. The study also explores the potential valorization routes for these by-products, including their application in animal feed, biofertilizers, collagen and gelatin production, and as sources of bioactive compounds for nutraceuticals. By highlighting their nutritional and commercial value, this research underscores the importance of adopting sustainable utilization practices for fish processing waste, thereby promoting environmental conservation and supporting local livelihoods in coastal communities.
Keywords: Balasore coast, overfishing, nutrition, fish processing