Decolorization of Humic Acids and Alkaline Lignin Derivative by an Anamorphic Bjerkandera Adusta R59 Strain Isolated from Soil
T. Korniłłowicz-Kowalska1, G. Ginalska2, A. Belcarz2, H. Iglik1
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1Department of Microbiology, Mycological Laboratory, University of Life Sciences, Leszczynskiego 7, 20-069 Lublin, Poland
2Department of Biochemistry Chair, Medical University of Lublin, Chodzki 1, 20-093 Lublin, Poland
Pol. J. Environ. Stud. 2008;17(6):903–909
An anamorphic Bjerkandera adusta R59 strain, isolated from soil, was found to decolorize post-industrial lignin alkaline fraction, humic acids isolated from two kinds of soil and from brown coal. The drop of methoxyphenolic compound levels in liquid B. adusta cultures containing lignin or humic acids was correlated with decolorization of studied biopolymers, which suggests their partial biodegradation. It was shown that this process was coupled with the induction of secondary metabolism (idiophase), and highest peroxidase activity in culture medium and appearance of aerial mycelium. Decolorization of lignin and humic acids from lessive soil and brown coal depended on glucose presence (cometabolism). Decolorization of humic acid from chernozem was related partially to adsorption by fungal mycelium.