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| Registros recuperados : 164 | |
| 41. |  | MORAIS, A. C.; ROSENTHAL, A.; TIBURSKI, J.; MARTINS, T.; DELIZA, R.; ELISA FERREIRA; AUGUSTIN, M. A.; JULIANO, P. Functional non-fermented whey-grape juice beverage as an alternative for whey utilization. In: INTERNATIONAL ISEKI_FOOD CONFERENCE, 4., 2016, Vienna, Austria. Responsible research and innovation in the food value chain: book of abstracts. Austria: ISEKI-Food Association, 2016. #292. p. 269| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 46. | | PEREIRA, S. M.; MARTINS, T. B.; CARNEIRO, A. V.; BETETTO, M. J. R.; BUENO, A. de F. Seletividade de agrotóxicos a adultos do parasitoide de ovos Trichogramma pretiosum em condições de laboratório segundo as normas da IOBC. In: JORNADA ACADÊMICA DA EMBRAPA SOJA, 6., 2011, Londrina. Resumos expandidos. Londrina: Embrapa Soja, 2011. p. 60-64. (Embrapa Soja. Documentos 328). Editado por Odilon Ferreira Saraiva, Paula Geron Saiz Melo. Disponível em: .| Biblioteca(s): Embrapa Soja. |
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| 48. | | MARTINS, T.; ROSA, A. F.; CASTELANI, L.; MIRANDA, M. S. de; ARCARO, J. R. P.; POZZI, C. R. Intramammary treatment with gentamicin in lactating cows with clinical and subclinical mastitis. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 4, p. 283-289, abr. 2016.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 49. | | SCHINKE, C.; MARTINS, T.; SILVA, F. S. P. da; SOUZA, D. T.; MELO, I. S. de; REYES, F. G. R. Atividade antibacteriana de metabólitos de actinomicetos marinhos contra patógenos de peixes. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 3., 2014, Santos. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2014. Resumo 427.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 51. | | SCHINKE, C.; MARTINS, T.; QUEIROZ, S. C. do N. de; MELO, I. S. de; REYES, F. G. R. Antibacterial compounds from marine bacteria, 2010-2015. Journal of Natural Products, Cincinnati, v. 80, n. 4, p. 1215?1228, 2017.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 52. | | SCHINKE, C.; MARTINS, T.; SILVA, F. S. P. da; SOUZA, D. T.; MELO, I. S. de; REYES, F. G. R. Antibacterianos de actinomicetos marinhos contra o patógeno oportunista Aeromonas spp. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 3., 2014, Santos. Anais... Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2014. Resumo 726.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 53. | | BOTELHO, S. A.; MARTINS, T. P.; DUARTE, M. F.; BARBOSA, A. V.; LAU, D.; FERNANDES, F. R.; SANCHES, M. M. Development of methodologies for diagnosis of viruses in soybean and wheat seeds. MethodsX, v. 3, p. 62-68, 2016.| Biblioteca(s): Embrapa Quarentena Vegetal. |
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| 54. | | MARTINS, T. N.; STORCK, L.; LOPES, S. J.; SANTOS, P. M. dos; CARVALHO, M. P. de; DAMO, H. P. Definição de plano experimental para comparação de cultivares de milho em áreas limitadas. Revista Brasileira de Milho e Sorgo, Sete Lagoas, v. 3, n. 3, p. 325-332, 2004.| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 55. | | CASTELINI, L.; MARTINS, T.; ZAFALON, L. F.; MIRANDA, M. S.; POZZI, C. R.; POZZI, J. R. P. Detecção dos genes icaA e icaD em Staphylococcus aureus isolados de mastite em novilhas. In: CONGRESSO LATINOAMERICANO DE MICROBIOLOGIA, 21., 2012, Santos. Resumos... Santos: Associação Latinoamericano de Microbiologia, 2012.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 56. | | NIERI-BASTOS, F. A.; MARTINS, T. F.; CANCADO, P. H. D.; FACCINI, J. L. H.; LABRUNA, M. B. Detection of a spotted fever group rickettsia in Amblyomma parvum (Acari: Ixodidae) from the Pantanal biome, Brazil. Biomédica, v.31, p. 87-102, 2011. Supplement. Edição dos resumos do CONGRESSO LATINOAMERICANO DE ENFERMEDADES RICKETTSIALES, 3., ENCUENTRO NACIONAL DE FIEBRES HEMORRÁGICAS, 1., 2011, Bogotá. Presentaciones orales. Bogotá: Pontificia Universidad Javeriana, 2011. p. 94| Biblioteca(s): Embrapa Gado de Corte. |
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| 58. | | COELHO FILHO, M. A. C.; CRUZ, J. L.; COELHO, E. F.; MARTINS, T. S.; MARIN, F. R. Aptidão agroclimática do estado da Bahia para o cultivo do mamoeiro. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 16, 2009, Belo Horizonte. Anais... Viçosa, MG: UFV; Sete Lagoas: Embrapa Milho e Sorgo, 2009. Não paginado. 1 CD-ROM. CBA 2009.| Biblioteca(s): Embrapa Agricultura Digital. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
17/05/2024 |
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Data da última atualização: |
17/05/2024 |
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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: |
GENTIL, M.; MAGALHAES, W. L. E.; MARTINS, T. R.; MALLMANN, A. S.; MALUCELLI, L. C.; COLDEBELLA, R.; PEDRAZZI, C. |
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Afiliação: |
MARINA GENTIL, UNIVERSIDADE FEDERAL DE SANTA MARIA; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; THIAGO RODRIGUES MARTINS, UNIVERSIDADE FEDERAL DE SANTA MARIA; ANDERSON STOFFELS MALLMANN, TANAC; LUCCA CENTA MALUCELLI; RODRIGO COLDEBELLA, UNIVERSIDADE FEDERAL DE SANTA MARIA; CRISTIANE PEDRAZZI, UNIVERSIDADE FEDERAL DE SANTA MARIA. |
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Título: |
Influence of residual lignin on Acacia mearnsii De Wild nanofibrillated cellulose suspensions and films. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Cellulose, v. 30, n. 17, p. 10867-10877, 2023. |
|
DOI: |
https://doi.org/10.1007/s10570-023-05546-5 |
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Idioma: |
Português |
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Conteúdo: |
Studies on plant-derived nanocellulose are mainly carried out with lignin-free materials. However, lignocellulosic materials can be used as an alternative raw material, mainly due to their low cost and low environmental impact. This work aimed to study and compare the influence of residual lignin on the nanofibrillation process, on the properties of the nanofibrils and the films formed from the cel- lulose nanofibrils of Acacia mearnsii De Wild. The cellulosic pulp was subjected to bleaching to remove the lignin and obtain the bleached pulp. Bleach and unbleached pulps were subjected to mechanical defi- brillation to obtain cellulose nanofibrils. The effects of defibrillation and residual lignin content were ana- lyzed by characterizing the suspensions and nanocel- lulose films formed from this material. In addition, an energetic study of the production process of dif- ferent cellulose nanofibrils was carried out, consid- ering the different levels of residual lignin present in the material. The results demonstrated that the residual lignin presence preserved the thermal prop- erties and provided changes in the morphology of the films, the suspensions showed colloidal stability from pH 5.0 (between |25| and |30| kV), the increase of the lignin content in the pulp caused a slight expres- sive improvement in the antioxidant activity and a decrease in the suspension viscosities, which fitted the Herschel–Bulkley model well (R2 > 0.98). The mechanical properties of the films [127 MPa (NBR) and 75 MPa (N16)] and the energy consumption to produce nanofibrils [0.324 kWh (NBR) and 0.180 kWh (N16)] showed significant differences, point- ing to the influence of residual lignin present in the materials. MenosStudies on plant-derived nanocellulose are mainly carried out with lignin-free materials. However, lignocellulosic materials can be used as an alternative raw material, mainly due to their low cost and low environmental impact. This work aimed to study and compare the influence of residual lignin on the nanofibrillation process, on the properties of the nanofibrils and the films formed from the cel- lulose nanofibrils of Acacia mearnsii De Wild. The cellulosic pulp was subjected to bleaching to remove the lignin and obtain the bleached pulp. Bleach and unbleached pulps were subjected to mechanical defi- brillation to obtain cellulose nanofibrils. The effects of defibrillation and residual lignin content were ana- lyzed by characterizing the suspensions and nanocel- lulose films formed from this material. In addition, an energetic study of the production process of dif- ferent cellulose nanofibrils was carried out, consid- ering the different levels of residual lignin present in the material. The results demonstrated that the residual lignin presence preserved the thermal prop- erties and provided changes in the morphology of the films, the suspensions showed colloidal stability from pH 5.0 (between |25| and |30| kV), the increase of the lignin content in the pulp caused a slight expres- sive improvement in the antioxidant activity and a decrease in the suspension viscosities, which fitted the Herschel–Bulkley model well (R2 > 0.98). The mechanical properties of the films [12... Mostrar Tudo |
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Palavras-Chave: |
Cellulose nanofilms; Kappa number; Nanocellulose; Nanocelulose. |
|
Thesagro: |
Acácia Mearnsii; Celulose. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
Marc: |
LEADER 02557naa a2200277 a 4500
001 2164308
005 2024-05-17
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10570-023-05546-5$2DOI
100 1 $aGENTIL, M.
245 $aInfluence of residual lignin on Acacia mearnsii De Wild nanofibrillated cellulose suspensions and films.$h[electronic resource]
260 $c2023
520 $aStudies on plant-derived nanocellulose are mainly carried out with lignin-free materials. However, lignocellulosic materials can be used as an alternative raw material, mainly due to their low cost and low environmental impact. This work aimed to study and compare the influence of residual lignin on the nanofibrillation process, on the properties of the nanofibrils and the films formed from the cel- lulose nanofibrils of Acacia mearnsii De Wild. The cellulosic pulp was subjected to bleaching to remove the lignin and obtain the bleached pulp. Bleach and unbleached pulps were subjected to mechanical defi- brillation to obtain cellulose nanofibrils. The effects of defibrillation and residual lignin content were ana- lyzed by characterizing the suspensions and nanocel- lulose films formed from this material. In addition, an energetic study of the production process of dif- ferent cellulose nanofibrils was carried out, consid- ering the different levels of residual lignin present in the material. The results demonstrated that the residual lignin presence preserved the thermal prop- erties and provided changes in the morphology of the films, the suspensions showed colloidal stability from pH 5.0 (between |25| and |30| kV), the increase of the lignin content in the pulp caused a slight expres- sive improvement in the antioxidant activity and a decrease in the suspension viscosities, which fitted the Herschel–Bulkley model well (R2 > 0.98). The mechanical properties of the films [127 MPa (NBR) and 75 MPa (N16)] and the energy consumption to produce nanofibrils [0.324 kWh (NBR) and 0.180 kWh (N16)] showed significant differences, point- ing to the influence of residual lignin present in the materials.
650 $aAcácia Mearnsii
650 $aCelulose
653 $aCellulose nanofilms
653 $aKappa number
653 $aNanocellulose
653 $aNanocelulose
700 1 $aMAGALHAES, W. L. E.
700 1 $aMARTINS, T. R.
700 1 $aMALLMANN, A. S.
700 1 $aMALUCELLI, L. C.
700 1 $aCOLDEBELLA, R.
700 1 $aPEDRAZZI, C.
773 $tCellulose$gv. 30, n. 17, p. 10867-10877, 2023.
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