Production and use of microbial biomass helping sustainability in tilapia production chain.

In this study, the cultivation of in fish industry effluent was carried out to cause the depollution of the by-product and generate a protein-carotenoid-rich biomass suitable to be used in tilapia feed. The bacterium was grown in the effluent (inoculum 1% v/v, 30 ± 5 °C, 2000 ± 500 lx, 7 days) and recovered as a biomass (microfiltration + centrifugation + lyophilization), resulting in a decrease of ca. 80% in the chemical oxygen demand of the industry by-product and so putting it within the required limits for wastewater discard in Brazil.