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	Provedor de dados BABT (1) BJM (1) Autor Yamanaka,Renata (2) Ballaminut,Nara (1) Machado,Katia Maria Gomes (1) Machado,Kátia M.G. (1) Matheus,Dácio R. (1) Soares,Clarissa F. (1) Mais... Palavra-chave Basidiomycetes (1) Enzymatic inhibition (1) Fungi (1) Hydrogen peroxide (1) Laccase (1) Metals (1) MnP (1) Peroxidase (1) Surfactants (1) Vegetable oil (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2009 (1) 2008 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Interference of a commercial catalase preparation in laccase and peroxidase activities BABT Ballaminut,Nara; Yamanaka,Renata; Machado,Katia Maria Gomes. 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. Tipo: Info:eu-repo/semantics/article Palavras-chave: Peroxidase; Fungi; Basidiomycetes; Hydrogen peroxide; Enzymatic inhibition. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500017 Lignolytic enzymes produced by Trametes villosa ccb176 under different culture conditions BJM Yamanaka,Renata; Soares,Clarissa F.; Matheus,Dácio R.; Machado,Kátia M.G.. The expression of the enzymatic system produced by basidiomycetous fungi, which is involved in the degradation of xenobiotics, mainly depends on culture conditions, especially of the culture medium composition. Trametes villosa is a strain with a proven biotechnological potential for the degradation of organochlorine compounds and for the decolorization of textile dyes. The influence of glucose concentration, addition of a vegetable oil-surfactant emulsion, nature of the surfactant and the presence of manganese and copper on the growth, pH and production of laccase, total peroxidase and manganese-dependent peroxidase activities were evaluated. In general, acidification of the medium was observed, with the pH reaching a value close to 3.5 within the first... Tipo: Info:eu-repo/semantics/article Palavras-chave: Laccase; Metals; MnP; Vegetable oil; Surfactants. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100019 Registros recuperados: 2 Primeira ... 1 ... Última

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