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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
28/06/2006 |
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Data da última atualização: |
28/06/2006 |
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Autoria: |
VERGARA, S. C.; CALDAS, M. P. |
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Título: |
Paradigma interpretacionista: a busca da superação do objetivismo funcionalista nos anos 1980 e 1990. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Revista de Administração de Empresas, São Paulo, v. 45, n. 4, p. 66-72, out./dez. 2005. |
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Idioma: |
Português |
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Conteúdo: |
Os autores apresentam os dois artigos que compõem a quarta parte da série no quadro da abordagem interpretacionista, que se mostra uma alternativa ao funcionalismo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00614naa a2200133 a 4500
001 1118417
005 2006-06-28
008 2005 bl uuuu u00u1 u #d
100 1 $aVERGARA, S. C.
245 $aParadigma interpretacionista$ba busca da superação do objetivismo funcionalista nos anos 1980 e 1990.
260 $c2005
520 $aOs autores apresentam os dois artigos que compõem a quarta parte da série no quadro da abordagem interpretacionista, que se mostra uma alternativa ao funcionalismo.
700 1 $aCALDAS, M. P.
773 $tRevista de Administração de Empresas, São Paulo$gv. 45, n. 4, p. 66-72, out./dez. 2005.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
18/04/2022 |
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Data da última atualização: |
23/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
DIAS, M. C.; BELGACEM, M. N.; RESENDE, J. V. de; MARTINS, M. A.; DAMÁSIO, R. A. P.; TONOLI, G. H. D.; FERREIRA, S. R. |
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Afiliação: |
MARIA ALICE MARTINS, CNPDIA. |
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Título: |
Eco-friendly laccase and cellulase enzymes pretreatment for optimized production of high content lignin-cellulose nanofibrils. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
International Journal of Biological Macromolecules, v. 209, 2022. |
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Páginas: |
413-425 |
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ISSN: |
0141-8130 |
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DOI: |
https://doi.org/10.1016/j.ijbiomac.2022.04.005 |
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Idioma: |
Inglês |
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Conteúdo: |
Lignin-cellulose nanofibrils (LCNF) are of attracting an increasing interest due to the benefits of maintaining the lignin in the nanomaterial composition. The production of LCNF requires considerable energy consumption, which has been suppressed employing pretreatment of biomass, in which it highlights those that employ enzymes that have the advantage of being more environmentally friendly. Some negative aspects of the presence of lignin in the fiber to obtain cellulose nanofibrils is that it can hinder the delamination of the cell wall and act as a physical barrier to the action of cellulase enzymes. This study aimed to evaluate the impact of a combined enzymatic pretreatment of laccase and endoglucanase for high content lignin LCNF production. The morphological and chemical properties, visual aspect and stability, crystallinity, mechanical properties, rheology, barrier properties and quality index were used to characterize the LCNF. The laccase loading used was efficient in modifying the lignin to facilitate the action of the endoglucanase on cellulose without causing the removal of this macromolecule. This pretreatment improved the quality of LCNF (61 ± 3 to 71 ± 2 points) with an energy saving of 42% and, therefore, this pretreatment could be suitable for industrial production for a variety of applications. |
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Palavras-Chave: |
Cell wall; Cellulose nanofibers; Nanofibrillated cellulose. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1142273/1/P-Eco-friendly-laccase-and-cellulase-enzymes-pretreatment-for-optimized.pdf
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Marc: |
LEADER 02191naa a2200265 a 4500
001 2142273
005 2024-01-23
008 2022 bl uuuu u00u1 u #d
022 $a0141-8130
024 7 $ahttps://doi.org/10.1016/j.ijbiomac.2022.04.005$2DOI
100 1 $aDIAS, M. C.
245 $aEco-friendly laccase and cellulase enzymes pretreatment for optimized production of high content lignin-cellulose nanofibrils.$h[electronic resource]
260 $c2022
300 $a413-425
520 $aLignin-cellulose nanofibrils (LCNF) are of attracting an increasing interest due to the benefits of maintaining the lignin in the nanomaterial composition. The production of LCNF requires considerable energy consumption, which has been suppressed employing pretreatment of biomass, in which it highlights those that employ enzymes that have the advantage of being more environmentally friendly. Some negative aspects of the presence of lignin in the fiber to obtain cellulose nanofibrils is that it can hinder the delamination of the cell wall and act as a physical barrier to the action of cellulase enzymes. This study aimed to evaluate the impact of a combined enzymatic pretreatment of laccase and endoglucanase for high content lignin LCNF production. The morphological and chemical properties, visual aspect and stability, crystallinity, mechanical properties, rheology, barrier properties and quality index were used to characterize the LCNF. The laccase loading used was efficient in modifying the lignin to facilitate the action of the endoglucanase on cellulose without causing the removal of this macromolecule. This pretreatment improved the quality of LCNF (61 ± 3 to 71 ± 2 points) with an energy saving of 42% and, therefore, this pretreatment could be suitable for industrial production for a variety of applications.
653 $aCell wall
653 $aCellulose nanofibers
653 $aNanofibrillated cellulose
700 1 $aBELGACEM, M. N.
700 1 $aRESENDE, J. V. de
700 1 $aMARTINS, M. A.
700 1 $aDAMÁSIO, R. A. P.
700 1 $aTONOLI, G. H. D.
700 1 $aFERREIRA, S. R.
773 $tInternational Journal of Biological Macromolecules$gv. 209, 2022.
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Embrapa Instrumentação (CNPDIA) |
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