Tytuł pozycji:
Removal of a textile dye (RBBR) from the water environment by fungi isolated from lignocellulosic composts
A representative group of hydrophilic fungi from the genus Trichoderma isolated from lignocellulose
composts with varying degrees of maturity was analyzed for their ability to biodegrade a harmful anthraquinone
dye, i.e. Remazol Brilliant Blue R (RBBR). In RBBR-containing post-culture liquids, there were determined the
degree of RBBR decolorization, horseradish peroxidase-like, superoxide dismutase-like, and xylanase activities,
and the concentrations of low-molecular phenolic compounds.
The study results demonstrated that Trichoderma asperellum, T. harzianum, and T. lixii strains isolated from
compost containing larger amounts of easily available lignocellulose fractions, i.e. grasses, exhibit higher RBBR
decolorization efficiency ranging from 0.3 to 62% than T. citrinoviride strains isolated from compost II, which
contained greater quantities of hardly degradable lignocellulose. The decolorization of remazol blue R by the
investigated Trichoderma strains intensified significantly with the increase in peroxidase activity and it was
correlated with a decline in the content of low-molecular phenolic compounds. The dynamics of changes in the
horseradish peroxidase-like, superoxide dismutase, and xylanase activities in the aqueous post-culture liquids of
the investigated fungal strains depended largely on the duration of the culture.
Given their ability to adapt to water environments, e.g. wastewater, and to decolorize and detoxify the RBBR
anthraquinone dye, Trichoderma fungi can be used for bioremediation of such environments.