Submerged fermentation in a stirred bioreactor of the white rot fungus Cerrena unicolor C-139 was done at a 120-L scale in the presence of wheat bran as a cheap lignocellulosic substrate for fungus growth and laccase production. Enzyme monitoring showed that laccase production started after 2 days of cultivation, attaining a maximum activity of 416.4 U·mL ⁻¹ at day 12 of fermentation. After treatment of culture liquid by successive micro- and ultrafiltration (5 kDa), a liquid concentrate containing 22203176 units of laccase was obtained. Obtaining large amount of laccase is essential for various industrial applications, including detoxification of industrial effluents, textile and petrochemical industries, polymer synthesis, bioremediation of contaminated area, stabilization of beverages, production of cosmetics, manufacture of anti-cancer drugs, and nanobiotechnology. The cultivation method and the fungal strain used here provided a substantial amount of enzyme produced at a price lower than 0.01 € cent/unit enzyme.

The evaluation of continuous elimination and transformation of toxic endocrine disruptors micropollutants (MPs) (Bisphenol A, Nonylphenol [NP] and Triclosan [TCS]) using immobilized laccase of Coriolopsis sp. showed the high potential of this laccase as a bio-agent for the elimination and transformation process of selected MPs. A toxicology test using Escherichia coli has shown that toxicity completely disappeared after transformation and elimination of Bisphenol A, while in cases of NP and TCS 95% and 90% toxicity, respectively, disappeared. As compared to initial activity, immobilized laccase activity remained practically constant at the end of several runs of elimination and transformation processes of MPs. This feature is promising for the use of immobilized Coriolopsis sp. laccase in a future industrial depollution process.