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http://link.springer.com/article/10.1023/A:1020606416605
Continuous production of lignin-degrading enzymes by Bjerkandera adusta immobilized on polyurethane foam gave maximum activities of 220 U lignin peroxidase ml−1, 150 U manganese peroxidase ml−1, 50 U laccase ml−1 and 6.2 U protease ml−1 at the retention time of 24 h for 60 days. Protease secretion destabilized the produced lignin peroxidase, manganese peroxidase and laccase.