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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
17/03/2022 |
Data da última atualização: |
23/01/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BONDANCIA, T. J.; FLORENCIO, C.; BACCARIN, G.; FARINAS, C. S. |
Afiliação: |
CRISTIANE SANCHEZ FARINAS, CNPDIA. |
Título: |
Cellulose nanostructures obtained using enzymatic cocktails with different compositions. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
International Journal of Biological Macromolecules, v. 207, 2022. |
Páginas: |
299-307 |
ISSN: |
0141-8130 |
DOI: |
https://doi.org/10.1016/j.ijbiomac.2022.03.007 |
Idioma: |
Inglês |
Conteúdo: |
Cellulose nanostructures obtained from lignocellulosic biomass by the enzymatic route can offer advantages in terms of material properties and processing sustainability. However, most of the enzymatic cocktails commonly used in the saccharification of biomass are designed to promote the complete depolymerization of the cellulose structure into soluble sugars. Here, investigation was made of the way that the action of different commercially available cellulase enzyme cocktails can affect the production of nanocellulose. For this, enzymatic cocktails designed for complete or partial saccharification were compared, using eucalyptus cellulose pulp as a model feedstock. The results showed that all the enzymatic cocktails were effective in the formation of nanocellulose structures, with the complete saccharification enzymes being more efficient in promoting the coproduction of glucose (36.5 g/L, 87% cellulose conversion). The presence of auxiliary enzymes, especially xylanases, acted cooperatively to favor the production of nanostructures with higher crystallinity (up to 79%), higher surface charge (zeta potential up to − 30.9 mV), and more uniform dimensions within the size range of cellulose nanocrystals (80 to 350 nm). Interestingly, for the enzymatic cocktails designed for partial saccharification, the xylanase activity was more important than the endoglucanase activity in the production of nanocellulose with improved properties. The findings showed that the composition of the enzymatic cocktails already used for complete biomass saccharification can be suitable for obtaining nanocellulose, together with the release of a glucose stream, in a format compatible with the biorefinery concept. MenosCellulose nanostructures obtained from lignocellulosic biomass by the enzymatic route can offer advantages in terms of material properties and processing sustainability. However, most of the enzymatic cocktails commonly used in the saccharification of biomass are designed to promote the complete depolymerization of the cellulose structure into soluble sugars. Here, investigation was made of the way that the action of different commercially available cellulase enzyme cocktails can affect the production of nanocellulose. For this, enzymatic cocktails designed for complete or partial saccharification were compared, using eucalyptus cellulose pulp as a model feedstock. The results showed that all the enzymatic cocktails were effective in the formation of nanocellulose structures, with the complete saccharification enzymes being more efficient in promoting the coproduction of glucose (36.5 g/L, 87% cellulose conversion). The presence of auxiliary enzymes, especially xylanases, acted cooperatively to favor the production of nanostructures with higher crystallinity (up to 79%), higher surface charge (zeta potential up to − 30.9 mV), and more uniform dimensions within the size range of cellulose nanocrystals (80 to 350 nm). Interestingly, for the enzymatic cocktails designed for partial saccharification, the xylanase activity was more important than the endoglucanase activity in the production of nanocellulose with improved properties. The findings showed that the composition ... Mostrar Tudo |
Palavras-Chave: |
Biorefinery; Cellulose nanocrystal. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/232637/1/P-Cellulose-nanostructures-obtained-using-enzymatic-cocktails-with.pdf
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Marc: |
LEADER 02398naa a2200217 a 4500 001 2141011 005 2024-01-23 008 2022 bl uuuu u00u1 u #d 022 $a0141-8130 024 7 $ahttps://doi.org/10.1016/j.ijbiomac.2022.03.007$2DOI 100 1 $aBONDANCIA, T. J. 245 $aCellulose nanostructures obtained using enzymatic cocktails with different compositions.$h[electronic resource] 260 $c2022 300 $a299-307 520 $aCellulose nanostructures obtained from lignocellulosic biomass by the enzymatic route can offer advantages in terms of material properties and processing sustainability. However, most of the enzymatic cocktails commonly used in the saccharification of biomass are designed to promote the complete depolymerization of the cellulose structure into soluble sugars. Here, investigation was made of the way that the action of different commercially available cellulase enzyme cocktails can affect the production of nanocellulose. For this, enzymatic cocktails designed for complete or partial saccharification were compared, using eucalyptus cellulose pulp as a model feedstock. The results showed that all the enzymatic cocktails were effective in the formation of nanocellulose structures, with the complete saccharification enzymes being more efficient in promoting the coproduction of glucose (36.5 g/L, 87% cellulose conversion). The presence of auxiliary enzymes, especially xylanases, acted cooperatively to favor the production of nanostructures with higher crystallinity (up to 79%), higher surface charge (zeta potential up to − 30.9 mV), and more uniform dimensions within the size range of cellulose nanocrystals (80 to 350 nm). Interestingly, for the enzymatic cocktails designed for partial saccharification, the xylanase activity was more important than the endoglucanase activity in the production of nanocellulose with improved properties. The findings showed that the composition of the enzymatic cocktails already used for complete biomass saccharification can be suitable for obtaining nanocellulose, together with the release of a glucose stream, in a format compatible with the biorefinery concept. 653 $aBiorefinery 653 $aCellulose nanocrystal 700 1 $aFLORENCIO, C. 700 1 $aBACCARIN, G. 700 1 $aFARINAS, C. S. 773 $tInternational Journal of Biological Macromolecules$gv. 207, 2022.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
26/04/1999 |
Data da última atualização: |
07/02/2020 |
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
Autoria: |
HOMMA, A. K. O. |
Afiliação: |
ALFREDO KINGO OYAMA HOMMA, CPATU. |
Título: |
Extrativismo vegetal na Amazônia: limites e possibilidades. |
Ano de publicação: |
1996 |
Fonte/Imprenta: |
In: CLUSENER-GODT, M.; SACHS, I. (Ed.). Extrativismo na Amazônia brasileira: perspectivas sobre o desenvolvimento regional. Montevideo: UNESCO, 1996. |
Páginas: |
p. 35-61. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Extrativismo; Protected forests; Reserva extrativista. |
Thesagro: |
Economia; Exploração Florestal; Mercado; Produto Florestal. |
Thesaurus NAL: |
Amazonia; economics; forest products; marketing; resource management. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/210417/1/Extrativismo-vegetal-na-Amazonia.pdf
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Marc: |
LEADER 00835naa a2200277 a 4500 001 1394922 005 2020-02-07 008 1996 bl uuuu u00u1 u #d 100 1 $aHOMMA, A. K. O. 245 $aExtrativismo vegetal na Amazônia$blimites e possibilidades. 260 $c1996 300 $ap. 35-61. 650 $aAmazonia 650 $aeconomics 650 $aforest products 650 $amarketing 650 $aresource management 650 $aEconomia 650 $aExploração Florestal 650 $aMercado 650 $aProduto Florestal 653 $aBrasil 653 $aExtrativismo 653 $aProtected forests 653 $aReserva extrativista 773 $tIn: CLUSENER-GODT, M.; SACHS, I. (Ed.). Extrativismo na Amazônia brasileira: perspectivas sobre o desenvolvimento regional. Montevideo: UNESCO, 1996.
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