%0 Journal Article
%T Polycyclic aromatic hydrocarbons (PAHs) degradation by laccase from a tropical white rot fungus Ganoderma lucidum
%A H Punnapayak
%A S Prasongsuk
%A K Messner
%A K Danmek
%A P Lotrakul
%J African Journal of Biotechnology
%D 2009
%I Academic Journals
%X Laccase enzyme was produced from an isolate of the white rot fungus, Ganoderma lucidum Chaaim-001 BCU. The enzyme was subsequently evaluated for its degradative ability towards sixteen types of polycyclic aromatic hydrocarbons (PAHs). The G. lucidum laccase degraded antracene completely with or without a redox mediator (2 mM 1-hydroxybenzotriazole) and also degraded benzo[a]pyrene, fluorine, acenapthene, acenaphthylene and benzo[a]anthracene up to 100.0, 98.6, 95.4, 90.1 and 85.3 %, respectively, when the mediator was present. In the absence of the mediator, the ability to degrade these compounds dropped to 71.71, 62.9, 80.49, 85.85 and 9.14% respectively. Compared to the laccase enzyme from Trametes vesicolor, G. lucidum laccase appeared to retain more of its capability to degrade these PAHs when the mediator was absent.
%U http://www.ajol.info/index.php/ajb/article/view/66070