| Registro completo |
| Provedor de dados: |
63
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| País: |
Brazil
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| Título: |
Low carbon/nitrogen ratio increases laccase production from basidiomycetes in solid substrate cultivation
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| Autores: |
D'Agostini,Érica Clarissa
Mantovani,Talita Rafaele D'Agostini
Valle,Juliana Silveira do
Paccola-Meirelles,Luzia Doretto
Colauto,Nelson Barros
Linde,Giani Andrea
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| Data: |
2011-06-01
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| Ano: |
2011
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| Palavras-chave: |
Industrial byproduct
Lignocellulolytic
Enzyme
Lignolytic
Soybean hull
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000300004
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/S0103-90162011000300004
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.68 n.3 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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