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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
23/03/2022 |
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Data da última atualização: |
24/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SQUINCA, P.; BILATTO, S.; BADINO, A. C.; FARINAS, C. S. |
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Afiliação: |
CRISTIANE SANCHEZ FARINAS, CNPDIA. |
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Título: |
Nanocellulose production in future biorefineries: An integrated approach using Tailor-Made enzymes. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
ACS Sustainable Chemistry & Engineering, v. 8, 2020. |
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Páginas: |
2277–2286 |
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DOI: |
https://dx.doi.org/10.1021/acssuschemeng.9b06790 |
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Idioma: |
Inglês |
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Conteúdo: |
The development of process engineering approaches to integrate the production of biofuels and high value-added biobased products, such as enzymes and nanocellulose, is crucial to improve the financial performance and sustainability of lignocellulosic biomass biorefineries. Here, the feasibility of applying enzymes produced on-site to obtain nanocellulose was evaluated using eucalyptus cellulose pulp as a model feedstock. A systematic analysis of the structural properties of the nanomaterials obtained after hydrolysis using a cellulolytic enzymatic complex with high endoglucanase specific activity (17.09 IU/mgprotein), produced by Aspergillus niger, followed by sonication, revealed that longer ball milling pretreatment and reaction times favored extraction of the cellulose nanocrystals (CNCs). The highest yield (24.6%) of CNCs was achieved using 96 h of enzymatic hydrolysis of the ball-milled cellulose pulp, followed by sonication for 5 min. The CNCs presented approximate lengths of 294.0 nm and diameters of 24.0 nm, and the crystallinity index increased from 57.5% to 78.3%, compared to the cellulose pulp that was only ball milled. These findings demonstrated that nanocelluloses could be successfully extracted using on-site produced enzymes and that the sustainable integrated process reported here could contribute to the development of the nascent biobase economy. |
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Palavras-Chave: |
Cellulose nanocrystals; Integrated biorefinery; On-site production; Solid-state fermentation. |
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Categoria do assunto: |
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Marc: |
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
