Interference of a commercial catalase preparation in laccase and peroxidase activities

The influence of commercial catalase preparations (fungal and bovine origin) on laccase and peroxidase activity assays was evaluated using enzymatic extracts obtained from several basidiomycetes grown under different culture conditions. No hydrogen peroxide was detected in the extracts. Inhibition o...

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Bibliographic Details
Main Authors: Nara Ballaminut, Renata Yamanaka, Katia Maria Gomes Machado
Format: Article
Language:English
Published: Instituto de Tecnologia do Paraná (Tecpar) 2009-10-01
Series:Brazilian Archives of Biology and Technology
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500017
Description
Summary:The influence of commercial catalase preparations (fungal and bovine origin) on laccase and peroxidase activity assays was evaluated using enzymatic extracts obtained from several basidiomycetes grown under different culture conditions. No hydrogen peroxide was detected in the extracts. Inhibition of laccase activity by 40 to 80% was related to the catalase source. In addition, oxidation of the substrate (ABTS) by fungal catalase in the absence of the enzymatic extract from basidiomycetes was observed. The results demonstrated the need for the evaluation of interference of the commercial catalase preparation when its use was required in the reaction mixture.<br>A influência da preparação comercial de catalase (origem fúngica e bovina) nos ensaios de atividade absence and presence of a fungal or bovine de lacase e de peroxidases foi avaliada empregando-se extratos enzimáticos obtidos do crescimento de diversos basidiomicetos em diferentes condições de cultivo. Não foi detectado H2O2 nos extratos. Inibição de 40 a 80% da atividade de lacase foi relacionada à fonte de catalase. Além disso, foi observada oxidação do substrato (ABTS) pela catalase fúngica, na ausência de extrato enzimático do basidiomiceto. Os resultados evidenciaram a necessidade de se proceder a uma avaliação da interferência da preparação comercial de catalase, quando o seu uso se fizer necessário na mistura reacional.
ISSN:1516-8913
1678-4324