Original paper

Archives of Microbiology

, Volume 171, Issue 1, pp 31-36

First online:

Studies of the production and characterization of laccase activity in the basidiomycete Coriolopsis gallica, an efficient decolorizer of alkaline effluents

  • A. M. CalvoAffiliated withCentro de Investigaciones Biológicas, CSIC, Velázquez 144, E-28006, Madrid, Spain e-mail: cibg117@fresno.csic.es Tel. +341-91-5611800, Ext 4413; Fax 34-91-5627518 Tel. +34-915611800, Ext 4413; Fax +34-915627518
  • , José L. Copa-PatiñoAffiliated withDepartamento de Microbiología y Parasitología, Universidad de Alcalá de Henares, 28771 Alcalá de Henares, Madrid, Spain
  • , Oriele AlonsoAffiliated withInstituto de Microbiología, Facultad de Ciencias, UACH, Casilla 567, Valdivia, Chile
  • , A. E. GonzálezAffiliated withCentro de Investigaciones Biológicas, CSIC, Velázquez 144, E-28006, Madrid, Spain e-mail: cibg117@fresno.csic.es Tel. +341-91-5611800, Ext 4413; Fax 34-91-5627518 Tel. +34-915611800, Ext 4413; Fax +34-915627518

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Abstract

The basidiomycete Coriolopsis gallica decolorizes alkaline paper effluents efficiently. In this work, we found that C. gallica produces laccase during this decolorization process. This enzymatic activity was produced in all media studied; however, the highest enzymatic activity was obtained in a medium containing paper effluent, where laccase was detected on the 2nd day of the experiment. The laccase activity of C. gallica was purified and characterized. The amino-terminal sequence of this protein showed the highest similarity with the laccase I of the basidiomycete PM1 and with Coriolus hirsutus laccase.

Key words Laccase Coriolopsis gallica Decolorization Alkali lignin