Moreira, Patrícia RaquelAlmeida-Vara, ElsaMalcata, F. XavierDuarte, José Cardoso2010-10-112010-10-112007"International biodeterioration & biodegradation". ISSN 0964-8305. 59: 3 (2007) 234-2380964-8305http://hdl.handle.net/10400.14/2834A versatile peroxidase, purified from a novel strain of Bjerkandera sp. (B33/3), was tested for its reactivity on a lignin fraction obtained from straw pulping. The effects of such processing parameters as reaction time, pH, and lignin:enzyme ratio were evaluated. Gel filtration chromatography was employed to characterise the molecular mass distribution of the lignin fragments produced by the enzyme-mediated reaction. Our results have shown that such a versatile peroxidase can directly bring about transformations of lignin, even in the absence of external mediators.engEnzymeWood materialGel filtration chromatographyjournal article10.1016/j.ibiod.2006.11.002