Decolorization of Drimaren Brilliant Blue dye by Trametes villosa CCB176 and Pycnoporus sanguineus UFMGCB03 grown in the presence of different nitrogen concentrations: (_, _) 1.2 mm; (_, _) 12 mm; (_, _) 22.4 mm. Biomass (filled symbols), decolorization (open symbols).

Decolorization was calculated considering the color of the no inoculated control to be 100%. The bars indicate the standard deviation between duplicate experiments. Consisting of nine dyes (final concentration of 0.5 g L-1) within seven days of culture (8). Phlebia tremellosa reduced by 96% the color of a synthetic effluent consisting of a mixture of eight reactive dyes (final concentration of 0.2 mg L-1) after 14 days of stationary culture (9). In the mixed culture of P.

Sanguineus and T. villosa, a greater biomass was obtained in the presence of the synthetic effluent and no glucose exhaustion was observed. Dye decolorization was faster in the mixed culture compared to the pure culture, with approximately 80% and 90% color reduction at 7 and 17 days, respectively (Fig. 5). These results support the importance of studies involving mixed cultures in order to better understand the possible relationship between different ligninolytic systems in the degradation of pollutant molecules.

Growth of Trametes villosa CCB76 and Pycnoporus sanguineus UFMGCB03 in the presence of synthetic effluent. (_) Biomass, (_) residual color, (_) glucose consumption. Control: growth in the absence of dye. (_) Biomass and (_) glucose consumption. The bars indicate the standard deviation Between duplicate experiments.

Growth of a mixed culture of Trametes villosa CCB76 and Pycnoporus sanguineus UFMGCB03 in the presence of synthetic effluent. (_) Biomass, (_) residual color, (_) glucose consumption. Control: growth in the absence of dye. (_) Biomass and (_) glucose consumption. The bars indicate the standard deviation between duplicate experiments. Cultures in terms of their ability to degrade reactive textile dyes. The excellent performance of T. villosa and P. sanguineus in the decolorization of dyes of different chemical structures reinforces the potential of these fungi for environmental decontamination

ACKNOWLEDGMENTS

This study was supported by CETEC. We are indebted to Cia de Tecidos Cataguases for providing the dyes and to Dr. Dácio R. Mathe us for revising the manuscript.

Palavras-chave: indústria têxtil, efluente sintético, corantes Reativos

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