Factores que influyen sobre la degradación de colorantes sintéticos por sobrenadantes de cultivo del hongo ligninolítico Trametes trogii.

L. LEVIN; S. TRUPKIN; F. FORCHIASIN; V.L. PAPINUTTI; A. VIALE

Segundo libro SETAC América Latina, Salud ambiental y humana. Una versión Holística.

Sociedad de Toxicología y Química Ambiental (SETAC) Press

Lugar: Buenos Aires; Año: 2006; p. 150 - 152

Factors influencing synthetic dye decolorization by culture fluids of the white-rot fungus Trametes trogii. White rot fungi are the most efficient ligninolytic organisms described to date. This capability to degrade lignin is due to their extracellular nonspecific and nonstereoselective enzyme system composed by laccases, lignin- and Mn- peroxidases, which function together with H2O2-producing oxidases and secondary metabolites. This system also allows them to degrade a wide range of pollutants. The white-rot fungus Trametes trogii has received little research attention although it is an outstanding laccase producer and its ability to degrade high priority pollutants such as polychlorinated biphenyls, polyaromatic dyes and polycyclic aromatic hydrocarbons has been recently demonstrated. In this work we investigated the ability of culture fluids of T. trogii (strain BAFC 212) to decolorize a wide range of synthetic textile dyes and the role of the ligninolytic enzymes in the decolorization process. The effect of different enzyme mediators on the rate of decolorization, and the stability of the ligninolytic enzymes in the presence of heavy metals and other enzyme inhibitors was also evaluated.