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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
30/11/2022 |
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Data da última atualização: |
30/11/2022 |
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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: |
MARTINS, M. A.; MATTOSO, L. H. C. |
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Afiliação: |
MARIA ALICE MARTINS, CNPDIA; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA. |
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Título: |
Manufacture and performance of peanut skin cellulose nanocrystals. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Scientia Agricola, v. 79, n. 6, e20210010, 2022. |
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Páginas: |
1 - 10 |
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ISSN: |
1678-992X |
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DOI: |
http://doi.org/10.1590/1678-992X-2021-0010 |
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Idioma: |
Inglês |
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Conteúdo: |
Due to their remarkable characteristics, cellulose nanocrystals are strategic
materials that has various industrial applications, and are capable of being produced from
vegetable fibers derived from the discards of agricultural practices. Peanut (Arachis hypogaea L.)
peel is a residue considered of low commercial value and high polluting potential that needs new
applications in order to mitigate these problems. Thus, in this study the feasibility of extracting
cellulose nanocrystals was investigated. Two chemical routes were followed for this extraction.
In the first, the fibers were bleached before acid hydrolysis whereas mercerization was used
in the second. The second route was more efficient, as it enabled the elimination of proteins
and phenolic compounds, which could be confirmed through solid-state 13 C nuclear magnetic
resonance (NMR) that revealed no signs of lignin residues. The cellulose nanocrystals composed
of mainly type I cellulose presented a high degree of crystallinity index, 75 %, a thermal stability
up to 200 °C, considerable stability in suspension (zeta potential of ?48.1 ± 2.1 mV), and an
aspect ratio of 125. They represent options that could add value to this residue, which would
ease environmental problems. |
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Palavras-Chave: |
Agricultural residue; Waste. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01833naa a2200193 a 4500
001 2149008
005 2022-11-30
008 2022 bl uuuu u00u1 u #d
022 $a1678-992X
024 7 $ahttp://doi.org/10.1590/1678-992X-2021-0010$2DOI
100 1 $aMARTINS, M. A.
245 $aManufacture and performance of peanut skin cellulose nanocrystals.$h[electronic resource]
260 $c2022
300 $a1 - 10
520 $aDue to their remarkable characteristics, cellulose nanocrystals are strategic materials that has various industrial applications, and are capable of being produced from vegetable fibers derived from the discards of agricultural practices. Peanut (Arachis hypogaea L.) peel is a residue considered of low commercial value and high polluting potential that needs new applications in order to mitigate these problems. Thus, in this study the feasibility of extracting cellulose nanocrystals was investigated. Two chemical routes were followed for this extraction. In the first, the fibers were bleached before acid hydrolysis whereas mercerization was used in the second. The second route was more efficient, as it enabled the elimination of proteins and phenolic compounds, which could be confirmed through solid-state 13 C nuclear magnetic resonance (NMR) that revealed no signs of lignin residues. The cellulose nanocrystals composed of mainly type I cellulose presented a high degree of crystallinity index, 75 %, a thermal stability up to 200 °C, considerable stability in suspension (zeta potential of ?48.1 ± 2.1 mV), and an aspect ratio of 125. They represent options that could add value to this residue, which would ease environmental problems.
653 $aAgricultural residue
653 $aWaste
700 1 $aMATTOSO, L. H. C.
773 $tScientia Agricola$gv. 79, n. 6, e20210010, 2022.
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