Data/hora: 05/06/2024 04:31:50

Provedor de dados: | 63
País: | Brazil
Título: | Low carbon/nitrogen ratio increases laccase production from basidiomycetes in solid substrate cultivation
Autores: | D'Agostini,Érica Clarissa; Mantovani,Talita Rafaele D'Agostini; Valle,Juliana Silveira do; Paccola-Meirelles,Luzia Doretto; Colauto,Nelson Barros; Linde,Giani Andrea.
Data: | 2011-06-01
Ano: | 2011
Palavras-chave: | Industrial byproduct; Lignocellulolytic; Enzyme; Lignolytic; Soybean hull.
Resumo: | Basidiomycetes are laccase producers used for hydrolysis of lignocellulosic byproducts in fermentative processes and could be used on biofuel production or ruminant feeding. The objective of this study was to evaluate the effect of concentrations of non-protein nitrogen sources on laccase production and mycelial growth of Pleurotus ostreatus, Lentinula edodes and Agaricus blazei. The fungi were grown on soybean hulls to which urea (U), ammonium sulfate (AS) or mixture of AS:U (1:1) were added to achieve carbon/nitrogen (C/N) ratios of 5, 15, 20 or 30. The average longitudinal mycelial growth was measured and laccase activity was determined by the oxidation of 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid. Higher C/N ratios increased mycelial growth and decreased laccase production. The highest activities were obtained with a C/N ratio of 5. P. ostreatus, L. edodes and A. blazei produced more laccase when AS, AS:U and U, respectively, were added. In addition, C/N ratios lower than 30 induced laccase syntheses, inhibited mycelial growth and were a better condition for pre-hydrolysis of plant residues.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000300004
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90162011000300004
Formato: | text/html
Fonte: | Scientia Agricola  v.68 n.3 2011
Fonte: | info:eu-repo/semantics/openAccess