Selection of Pyenoporus cinnabarinus strains for laccase production

A comparison of Pycnoporus cinnabarinus strains for laccase production was carried our. A dikaryotic strain, I-937 strain, producing a high level of l accase (9500 U l(-1)) was selected. The study of the life cycle in vitro of this dikaryotic strain led to isolation of monokaryons. Forty-eight monoka ryotic strains were isolated and screened for laccase production. One of th ese strains, ss3, produced a higher level of laccase than the parental stra in I-937. The maximum production reached 19 000 U l(-1) in medium supplemen ted with ferulic acid. (C) 2000 Federation of European Microbiological Soci eties. Published by Elsevier Science B.V. All rights reserved.