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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
24/09/2012 |
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Data da última atualização: |
09/11/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
BORTOLIN, A.; AOUADA, F. A.; LONGO, E.; MATTOSO, L. H. C. |
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Afiliação: |
LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA. |
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Título: |
Investigação detalhada do processo de absorção de água de hidrogéis polissacarídicos |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 6., 2012, Fortaleza. Anais... São Carlos: Embrapa Instrumentação; Fortaleza: Embrapa Agroindústria Tropical, 2012. p. 315-317. Editores: Maria Alice Martins, MOrsyleide de Freitas Rosa, Men de Sá Moreira de Souza Filho, Nicodemos Moreira dos Santos Junior, Odílio Benedito Garrido de Assis, Caue Ribeiro, Luiz Henrique Capparelli Mattoso. |
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ISSN: |
2175-8395 |
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Idioma: |
Português |
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Palavras-Chave: |
Difusão Fickiana; Hidrogéis biodegradáveis; Propriedades cinéticas; Propriedades espectroscópicas; Propriedades morfológicas. |
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Thesagro: |
Absorção de Água. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/81087/1/Proci-12.00093.pdf
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Marc: |
LEADER 01050nam a2200217 a 4500
001 1934417
005 2018-11-09
008 2012 bl uuuu u00u1 u #d
022 $a2175-8395
100 1 $aBORTOLIN, A.
245 $aInvestigação detalhada do processo de absorção de água de hidrogéis polissacarídicos
260 $aIn: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 6., 2012, Fortaleza. Anais... São Carlos: Embrapa Instrumentação; Fortaleza: Embrapa Agroindústria Tropical, 2012. p. 315-317. Editores: Maria Alice Martins, MOrsyleide de Freitas Rosa, Men de Sá Moreira de Souza Filho, Nicodemos Moreira dos Santos Junior, Odílio Benedito Garrido de Assis, Caue Ribeiro, Luiz Henrique Capparelli Mattoso.$c2012
650 $aAbsorção de Água
653 $aDifusão Fickiana
653 $aHidrogéis biodegradáveis
653 $aPropriedades cinéticas
653 $aPropriedades espectroscópicas
653 $aPropriedades morfológicas
700 1 $aAOUADA, F. A.
700 1 $aLONGO, E.
700 1 $aMATTOSO, L. H. C.
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Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
19/07/2019 |
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Data da última atualização: |
19/11/2019 |
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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: |
AQUINO, A. M. de; CANELLAS, L. P.; SILVA, A. P. S. da; CANELLAS, N. O.; LIMA, L. da S.; OLIVARES, F. L.; PICCOLO, A.; SPACCINI, R. |
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Afiliação: |
ADRIANA MARIA DE AQUINO, CNPAB; UENF; UENF; UENF; UENF; UENF; Università di Napoli Federico; Università di Napoli Federico. |
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Título: |
Evaluation of molecular properties of humic acids from vermicompost by 13 C CPMAS NMR spectroscopy and thermochemolysis GC MS |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Analytical and Applied Pyrolysis, v .141, 104634, August 2019. |
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DOI: |
https://doi.org/10.1016/j.jaap.2019.104634 |
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Idioma: |
Inglês |
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Conteúdo: |
The molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hence represent a useful requirement to select the most suitable application of bulk biomasses and derived fractions for soil organic matter managements. MenosThe molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hen... Mostrar Tudo |
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Palavras-Chave: |
Cotton residues Humic extracts; Cow manure; Molecular characterization; Structura ctivity; Vermicompost. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02560naa a2200277 a 4500
001 2110756
005 2019-11-19
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jaap.2019.104634$2DOI
100 1 $aAQUINO, A. M. de
245 $aEvaluation of molecular properties of humic acids from vermicompost by 13 C CPMAS NMR spectroscopy and thermochemolysis GC MS$h[electronic resource]
260 $c2019
520 $aThe molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hence represent a useful requirement to select the most suitable application of bulk biomasses and derived fractions for soil organic matter managements.
653 $aCotton residues Humic extracts
653 $aCow manure
653 $aMolecular characterization
653 $aStructura ctivity
653 $aVermicompost
700 1 $aCANELLAS, L. P.
700 1 $aSILVA, A. P. S. da
700 1 $aCANELLAS, N. O.
700 1 $aLIMA, L. da S.
700 1 $aOLIVARES, F. L.
700 1 $aPICCOLO, A.
700 1 $aSPACCINI, R.
773 $tJournal of Analytical and Applied Pyrolysis, v .141, 104634, August 2019.
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