Fish & Marine By-Products

Global demand for healthy protein is steadily increasing the strategic importance of wild-caught fisheries and aquaculture. This growth makes it essential to reclassify by-products generated in fish processing plants, such as heads, bones, skins, internal organs, and shells, from waste into valuable raw materials.

Through modern rendering processes, these biological materials are transformed into nutrient-rich fishmeal, fish oil, and protein hydrolysates, providing valuable ingredients for the aquaculture feed and pet food industries.

The success of these processes depends on maintaining continuous, high-efficiency plant operation, particularly when dealing with seasonal fluctuations in wild-catch volumes or the steady supply of raw materials from aquaculture operations. This integrated approach ensures that every recoverable fraction of marine resources is put to use, minimizing environmental impact and creating a sustainable value chain that connects the food processing industry with the feed sector.

The core of rendering operations in seafood processing plants lies in the precise separation of fat, protein, and water phases. Polat Makina ensures process stability at the most critical stages through high-speed decanter centrifuges and separator solutions specifically developed for fish processing applications.

In fishmeal and fish oil production, press water generated after cooking and pressing is processed by Polat Makina decanters to remove suspended solids. This decanter stage stabilizes the load on the system, improving the efficiency of the subsequent separation stage.

High-speed separators then perform a final polishing step on the oil, removing fine particles and nearly all residual moisture to produce clear, stable fish oil with an extended shelf life that meets the demands of global markets.

Designed for continuous 24/7 operation, Polat Makina’s wear-resistant equipment helps reduce operating costs while lowering suspended solids and oil loads, thereby reducing the burden on wastewater treatment units. This integrated engineering approach provides fish processing plants with more than just a production line: it delivers a professional technological infrastructure designed to maximize recovery and ensure consistent product quality.