Influence of cultivation temperature on the ligninolytic activity of selected fungal strains

-. Many reports have shown that extracellular peroxidases and laccases oxidize persistent organic pollutants. In this study, the ligninolitic activities of selected strains were determined in a nitrogen-sufficient liquid medium. In order to determine the effect of temperature on ligninolytic activities, selected white rot fungi were incubated at different temperatures (15, 20, 25 and 30PPC). The activities of manganese peroxidase and laccase were determined but no lignin peroxidase was detected for all strains. Significant differences were revealed among strains of the same species. The maximum laccase and manganese peroxidase activity was obtained by Pleurotus ostreatus sp.3 attaining 27.8 and 26 U/l after 11 and 13 days of cultivation at 30PPC. Key-Words: Ligninolytic enzymes, White rot fungi, Peroxidases, Lignin peroxidase, Manganese peroxidase, Laccase.

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