Ligninolytic enzymes production during polycyclic aromatic hydrocarbons degradation: effect of soil pH, soil amendments and fungal co-cultivation

Soil microorganisms play an important role in the degradation of PAHs and use various metabolic pathways for this process. The effect soil pH, different amendments co-cultivation fungi on activity ligninolytic enzymes was evaluated. For that purpose, three were studied: Trichoderma viride, Penicillium chrysogenum Agrocybe aegerita. Biodegradation assays with a mixture 200 ppm (fluorene, pyrene, chrysene, benzo[a]pyrene—50 each) set up at room temperature 8 weeks. maximum laccase by solid state fermentation—SSF (7.43 U/g) obtained A. aegerita kiwi peels 2 weeks highest manganese peroxidase (7.21 reached 4 weeks, both pH 7. Fluorene, benzo[a]pyrene achieved higher rates 5, while chrysene more degradable About 85–90% degraded fungal remediation. fluorene P. chrysogenum, remaining 14% undegradable. Around 13% pyrene stay undegradable T. viride systems supported peels, 11% remained these fungi, peanut shells. Regarding benzo[a]pyrene, after treatment Despite increase some co-cultivation, enzyme production during observed when cultivated alone.