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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
23/08/2024 |
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Data da última atualização: |
23/08/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SIMPLICIO, E. da S.; BRITO NETA, M. de S.; BRITO, G. F. da S.; ANDREANI, L.; CARVALHO, F. B. de P.; RODRIGUES, D. de S.; MACHADO, F.; VALADARES, L. F. |
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Afiliação: |
ELIANE DA SILVA SIMPLICIO; MARIA DE SOUSA BRITO NETA; GABRIEL FERREIRA DA SILVA BRITO, UNIVERSIDADE DE BRASÍLIA; LARISSA ANDREANI CARVALHO, CNPAE; FELIPE BRANDAO DE PAIVA CARVALHO, CNPAE; DASCIANA DE SOUSA RODRIGUES, CNPAE; FABRICIO MACHADO, UNIVERSIDADE DE BRASÍLIA; LEONARDO FONSECA VALADARES, CNPAE. |
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Título: |
Enzymatic hydrolysis of sugarcane and oil palm residues after hydrothermal pretreatment: the attainment of cellulose nanofbers. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Cellulose, 2024. |
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DOI: |
https://doi.org/10.1007/s10570-024-06115-0 |
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Idioma: |
Inglês |
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Conteúdo: |
In the present work, the use of enzymatic hydrolysis to obtain cellulose nanofbers composed of purifed cellulose from sugarcane bagasse (SCB) and oil palm empty fruit bunches (OPEFBs)was addressed. First, the cellulose was purifed by applying hydrothermal treatments conducted at various temperatures (180 and 200 °C) and times (10, 20and 30 min) and then 2% (m/v) sodium chlorite treatment. Then, enzymatic hydrolysis was conducted for 24, 48 or 72 h using cellulase from Trichoderma reesei at 50 °C and pH=5.0 to isolate the cellulose nanofbers. The composition, morphology, crystallinity, thermal stability and zeta potential characteristics were evaluated for each cellulosic material. The crystallinity index increased signifcantly after hydrothermal pretreatment and bleaching from 42.6% to 87.3% and from 42.5% to 86.1% for SCB and OPEFB, respectively. In addition, the obtained pulps showed better thermal stability than residues when used as feedstock. Enzymatic hydrolysis was efective at extracting cellulose nanofbers, as long as the reaction time was controlled to less than 48 h, to avoid compromising the crystallinity and thermal stability of the isolated nanostructures. The enzymatic pathway is a promising alternative to the use of acid catalysts. |
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Thesaurus Nal: |
Cellulose; Enzymatic hydrolysis; Nanofibers; Oil palm products; Sugarcane bagasse. |
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Categoria do assunto: |
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Marc: |
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Registro original: |
Embrapa Agroenergia (CNPAE) |
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| 1. |  | PLAPP JUNIOR, F. W.; JACKMAN, J. A.; CAMPANHOLA, C.; FRISBIE, R. E.; GRAVES, J. B.; LUTTRELL, R. G.; KITTEN, W. F.; WALL, M. Monitoring and management of pyrethroid resistance in the tobacco budworm (Lepidoptera: Noctuidae) in Texas, Mississippi, Louisiana, Arkansas and Oklahoma. Journal of Economic Entomology, v.83, n.2, p.335-341, Apr. 1990.| Tipo: Artigo em Periódico Indexado |
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