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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
04/10/2013 |
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Data da última atualização: |
21/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CARVALHO, M. L.; ZUÑIGA, U. F. R.; SUAREZ, C. A. G.; GIORDANO, R. C.; GIORDANO, R. L. C.; RODRIGUES, D. de S.; JUNIOR, R. S. |
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Afiliação: |
M. L. Carvalho, Universidade Federal de São Carlos; U. F. Rodríguez-Zúñiga, Universidade Federal de São Carlos; C. A. G. Suarez, Universidade Federal de São Carlos; R. C. Giordano, Universidade Federal de São Carlos; R. L. C. Giordano, Universidade Federal de São Carlos; DASCIANA DE SOUSA RODRIGUES, CNPAE; R. Sousa Jr., Universidade Federal de São Carlos. |
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Título: |
Kinetic study of the enzymatic hydrolysis of sugarcane bagasse. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Brazilian Journal of Chemical Engineering, v. 30, n. 3, p. 437-447, 2013. |
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DOI: |
10.1590/S0104-66322013000300002 |
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Idioma: |
Inglês |
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Conteúdo: |
This work presents a kinetic study of the enzymatic hydrolysis of three cellulosic substrates: filter paper (FP), used as a low recalcitrance substrate model; steam exploded sugarcane bagasse (SB); and weak acid pretreated SB (1:20 dry bagasse:H2SO4 solution 1% w/w), the last two delignified with 4% NaOH (w/w). The influence of substrate concentration was assessed in hydrolysis experiments in a shaker, using Accellerase® 1500, at pH 4.8, in 50 mM sodium citrate buffer. Cellulose loads (weightsubstrate/weighttotal) were changed between 0.5%-13% (for FP) and 0.99%-9.09% (for SB). For FP and low loads of steam exploded SB, it was possible to fit pseudo-homogeneous Michaelis-Menten models (with inhibition). For FP and higher loads of steam exploded SB, modified Michaelis-Menten models were fitted. Besides, it was observed that, after retuning of the model parameters, it is possible to apply a model fitted for one situation to a different case. Chrastil models were also fitted and they were the only feasible approach for the highly recalcitrant acid-treated SB. |
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Palavras-Chave: |
Cellulose enzymatic hydrolysis; Kinetic study. |
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Thesaurus NAL: |
sugarcane bagasse. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01822naa a2200241 a 4500
001 1967824
005 2017-09-21
008 2013 bl uuuu u00u1 u #d
024 7 $a10.1590/S0104-66322013000300002$2DOI
100 1 $aCARVALHO, M. L.
245 $aKinetic study of the enzymatic hydrolysis of sugarcane bagasse.$h[electronic resource]
260 $c2013
520 $aThis work presents a kinetic study of the enzymatic hydrolysis of three cellulosic substrates: filter paper (FP), used as a low recalcitrance substrate model; steam exploded sugarcane bagasse (SB); and weak acid pretreated SB (1:20 dry bagasse:H2SO4 solution 1% w/w), the last two delignified with 4% NaOH (w/w). The influence of substrate concentration was assessed in hydrolysis experiments in a shaker, using Accellerase® 1500, at pH 4.8, in 50 mM sodium citrate buffer. Cellulose loads (weightsubstrate/weighttotal) were changed between 0.5%-13% (for FP) and 0.99%-9.09% (for SB). For FP and low loads of steam exploded SB, it was possible to fit pseudo-homogeneous Michaelis-Menten models (with inhibition). For FP and higher loads of steam exploded SB, modified Michaelis-Menten models were fitted. Besides, it was observed that, after retuning of the model parameters, it is possible to apply a model fitted for one situation to a different case. Chrastil models were also fitted and they were the only feasible approach for the highly recalcitrant acid-treated SB.
650 $asugarcane bagasse
653 $aCellulose enzymatic hydrolysis
653 $aKinetic study
700 1 $aZUÑIGA, U. F. R.
700 1 $aSUAREZ, C. A. G.
700 1 $aGIORDANO, R. C.
700 1 $aGIORDANO, R. L. C.
700 1 $aRODRIGUES, D. de S.
700 1 $aJUNIOR, R. S.
773 $tBrazilian Journal of Chemical Engineering$gv. 30, n. 3, p. 437-447, 2013.
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