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Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
20/09/2019 |
Data da última atualização: |
11/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ESPÍRITO SANTO, M. C. do; CARDOSO, E. B.; GUIMARAES, F. E. G.; AZEVEDO, E. R. de; CUNHA, G. P. da; NOVOTNY, E. H.; PELLEGRINI, V. de O. A.; CHANDEL, A. K.; SILVEIRA, M. H. L.; POLIKARPOV, I. |
Afiliação: |
MELISSA CRISTINA DO ESPÍRITO SANTO, USP; ELIANO BRITO CARDOSO, CENTRO DE TECNOLOGIA CANAVIEIRA-SP; FRANCISCO EDUARDO GONTIJO GUIMARAES, USP; EDUARDO RIBEIRO DE AZEVEDO, USP; GIOVANNI PARO DA CUNHA, USP; ETELVINO HENRIQUE NOVOTNY, CNPS; VANESSA DE OLIVEIRA ARNOLDI PELLEGRINI, USP; ANUJ KUMAR CHANDEL, CENTRO DE TECNOLOGIA CANAVIEIRA-SP / USP; MARCOS HENRIQUE LUCIANO SILVEIRA, CENTRO DE TECNOLOGIA CANAVIEIRA-SP / FATEP-SP; IGOR POLIKARPOV, USP. |
Título: |
Multifaceted characterization of sugarcane bagasse under different steam explosion severity conditions leading to distinct enzymatic hydrolysis yields. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Industrial Crops & Products, v. 139, 111542, 2019. |
DOI: |
https://doi.org/10.1016/j.indcrop.2019.111542 |
Idioma: |
Inglês |
Conteúdo: |
Pretreatment is an important technological step for the lignocellulose conversion into fuels and biochemicals. Steam explosion (STEX) pretreatment is a fast method for affecting of plant cell wall architecture by a sharp pressure change at high temperatures. Here, eight different STEX conditions were applied to sugarcane bagasse (SCB) samples using auto-catalyzed and sulfuric acid catalyzed processes under a range of combined severity factors (CSFs; from 0.37 to 1.34). Our results showed that STEX of auto-catalyzed and sulfuric acid-catalyzed SCB led to the removal of 70-80 % and 82-92 % of xylose, respectively. Enzymatic hydrolysis of auto-catalyzed and sulfuric acid catalyzed bagasse was performed of washed and un-washed pretreated material to access the impact of soluble inhibitors on overall cellulosic sugars recovery. Auto-catalyzed bagasse after washing showed significantly higher glucan conversion (96%) than washed bagasse after pretreatment (62%). On the other hand, sulfuric acid-catalyzed bagasse after washing had 94% glucan conversion as opposed to unwashed material which again had significantly smaller conversion levels (73%). Physical properties and chemical composition were characterized using high performance liquid chromatography, X-ray diffraction, 13C solid-state nuclear magnetic resonance and confocal laser scanning microscopy. The obtained results contribute to understanding of an influence of the morphological changes resulting from pretreatments on the efficiency of enzymatic hydrolysis. We show that the changes in physical structure and chemical composition of the pretreated biomass might not be determined solely by combined severity factor of the pretreatments, but by the whole complexity of chemical modifications that different conditions of pretreatments introduce in the plant biomass samples. MenosPretreatment is an important technological step for the lignocellulose conversion into fuels and biochemicals. Steam explosion (STEX) pretreatment is a fast method for affecting of plant cell wall architecture by a sharp pressure change at high temperatures. Here, eight different STEX conditions were applied to sugarcane bagasse (SCB) samples using auto-catalyzed and sulfuric acid catalyzed processes under a range of combined severity factors (CSFs; from 0.37 to 1.34). Our results showed that STEX of auto-catalyzed and sulfuric acid-catalyzed SCB led to the removal of 70-80 % and 82-92 % of xylose, respectively. Enzymatic hydrolysis of auto-catalyzed and sulfuric acid catalyzed bagasse was performed of washed and un-washed pretreated material to access the impact of soluble inhibitors on overall cellulosic sugars recovery. Auto-catalyzed bagasse after washing showed significantly higher glucan conversion (96%) than washed bagasse after pretreatment (62%). On the other hand, sulfuric acid-catalyzed bagasse after washing had 94% glucan conversion as opposed to unwashed material which again had significantly smaller conversion levels (73%). Physical properties and chemical composition were characterized using high performance liquid chromatography, X-ray diffraction, 13C solid-state nuclear magnetic resonance and confocal laser scanning microscopy. The obtained results contribute to understanding of an influence of the morphological changes resulting from pretreatments on the e... Mostrar Tudo |
Thesagro: |
Bagaço; Biocombustível; Cana de Açúcar. |
Thesaurus Nal: |
Biofuels; Sugarcane bagasse. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02825naa a2200301 a 4500 001 2112344 005 2021-11-11 008 2019 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.indcrop.2019.111542$2DOI 100 1 $aESPÍRITO SANTO, M. C. do 245 $aMultifaceted characterization of sugarcane bagasse under different steam explosion severity conditions leading to distinct enzymatic hydrolysis yields.$h[electronic resource] 260 $c2019 520 $aPretreatment is an important technological step for the lignocellulose conversion into fuels and biochemicals. Steam explosion (STEX) pretreatment is a fast method for affecting of plant cell wall architecture by a sharp pressure change at high temperatures. Here, eight different STEX conditions were applied to sugarcane bagasse (SCB) samples using auto-catalyzed and sulfuric acid catalyzed processes under a range of combined severity factors (CSFs; from 0.37 to 1.34). Our results showed that STEX of auto-catalyzed and sulfuric acid-catalyzed SCB led to the removal of 70-80 % and 82-92 % of xylose, respectively. Enzymatic hydrolysis of auto-catalyzed and sulfuric acid catalyzed bagasse was performed of washed and un-washed pretreated material to access the impact of soluble inhibitors on overall cellulosic sugars recovery. Auto-catalyzed bagasse after washing showed significantly higher glucan conversion (96%) than washed bagasse after pretreatment (62%). On the other hand, sulfuric acid-catalyzed bagasse after washing had 94% glucan conversion as opposed to unwashed material which again had significantly smaller conversion levels (73%). Physical properties and chemical composition were characterized using high performance liquid chromatography, X-ray diffraction, 13C solid-state nuclear magnetic resonance and confocal laser scanning microscopy. The obtained results contribute to understanding of an influence of the morphological changes resulting from pretreatments on the efficiency of enzymatic hydrolysis. We show that the changes in physical structure and chemical composition of the pretreated biomass might not be determined solely by combined severity factor of the pretreatments, but by the whole complexity of chemical modifications that different conditions of pretreatments introduce in the plant biomass samples. 650 $aBiofuels 650 $aSugarcane bagasse 650 $aBagaço 650 $aBiocombustível 650 $aCana de Açúcar 700 1 $aCARDOSO, E. B. 700 1 $aGUIMARAES, F. E. G. 700 1 $aAZEVEDO, E. R. de 700 1 $aCUNHA, G. P. da 700 1 $aNOVOTNY, E. H. 700 1 $aPELLEGRINI, V. de O. A. 700 1 $aCHANDEL, A. K. 700 1 $aSILVEIRA, M. H. L. 700 1 $aPOLIKARPOV, I. 773 $tIndustrial Crops & Products$gv. 139, 111542, 2019.
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Embrapa Solos (CNPS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
27/06/1995 |
Data da última atualização: |
27/06/1995 |
Autoria: |
SA, N. M. M. de; PAIVA, E.; DOBEREINER, J.; FRANCO, A. A. |
Título: |
Seleção e caracterização de estirpes de Rhizobium estaveis e eficientes na fixacao de N2 em feijoeiro (P. vulgaris). |
Ano de publicação: |
1992 |
Fonte/Imprenta: |
In: Anais da Academia Brasileira de Ciencias. (No prelo)., v., p.-, 1992. |
Idioma: |
Português |
Palavras-Chave: |
FBN; UAPNPBS. |
Thesagro: |
Feijão; Phaseolus Vulgaris; Rhizobium. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00618naa a2200205 a 4500 001 1616010 005 1995-06-27 008 1992 bl --- 0-- u #d 100 1 $aSA, N. M. M. de 245 $aSeleção e caracterização de estirpes de Rhizobium estaveis e eficientes na fixacao de N2 em feijoeiro (P. vulgaris). 260 $c1992 650 $aFeijão 650 $aPhaseolus Vulgaris 650 $aRhizobium 653 $aFBN 653 $aUAPNPBS 700 1 $aPAIVA, E. 700 1 $aDOBEREINER, J. 700 1 $aFRANCO, A. A. 773 $tIn: Anais da Academia Brasileira de Ciencias. (No prelo).$gv., p.-, 1992.
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