Produção de enzimas lignocelulósicas por fermentação em estado sólido por espécimes do gênero Trichoderma para sacarificação do bagaço de cana de açúcar tratado com micro-ondas
| Ano de defesa: | 2015 |
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| Autor(a) principal: | |
| Orientador(a): | |
| Banca de defesa: | |
| Tipo de documento: | Tese |
| Tipo de acesso: | Acesso aberto |
| Idioma: | por |
| Instituição de defesa: |
Universidade Estadual Paulista (Unesp)
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| Programa de Pós-Graduação: |
Não Informado pela instituição
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| Departamento: |
Não Informado pela instituição
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| País: |
Não Informado pela instituição
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| Palavras-chave em Português: | |
| Link de acesso: | http://hdl.handle.net/11449/139426 http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/10-05-2016/000864718.pdf |
Resumo: | This study was divided in two steps, the first investigated the production of lignocelullosic enzymes for specimens of Trichoderma cultivated by state solid fermentation under different conditions physical-chemical. For ten specimens available, four showed satisfactory results of enzymatic production, being identified three species. T. virens, T. harzianum e T. aspereloides). The greatest production of CMCase (23 U/g), was obtained by T. asperelloides and the greatest production of β-glicosidase (4U/g) and xilanase (1640U/g) were obtained by T. virens. In the second investigation, was tested the efficiency of pre-treatment of bagasse sugar cane with microwave radiation in presence of acid phosphoric (0.05M), sodium hydroxide (0.01M), glycerol (10%) all diluted in water in fiber structure. About the treatments of the bagasse, the most efficient in the liberation of phenolic compounds (4.24 mg/g) and reducing sugars (0.06±0 mg/g) was the solution in microwave with NaOH and glycerol, respectively. The dry weight results after the treatment were significant, with a maximum of 14% loss of the initial in treatment with NaOH. The thermogravimetry and morphological analysis of treated bagasse with a microwave and NaOH, showed changes in the structure of the material showing the effectiveness of treatment in biomass breakdown |