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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. |
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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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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 02561naa 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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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 2 | |
| 1. |  | BUENO, A. C. R.; DOMENICO, C. I.; FREITAS, R. A. de; JUSTINO, E. V.; NASCIMENTO, W. M. Envelhecimento acelerado e deterioração controlada para avaliação do vigor de sementes de lentilha. Horticultura Brasileira, Brasília, DF, v. 28, n. 2, p. S4262-S4268, jul. 2010. CD-ROM. Suplemento. Trabalho apresentado no Congresso Brasileiro de Olericultura, 50., 2010, Guarapari. Cinquenta anos contribuindo para a saúde da população brasileira. Trabalho A2754-T4555.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Hortaliças. |
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| 2. | | VILLELA, R. P.; SOUZA, R. J. de; GUIMARÃES, R. M.; NASCIMENTO, W. M.; GOMES, L. A. A.; CARVALHO, B. O.; BUENO, A. C. R. Produção e desempenho de sementes de cultivares de alface em duas épocas de plantio. Revista Brasileira de Sementes, Brasília, DF, v. 32, n. 1, p. 158-169, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Hortaliças. |
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| Registros recuperados : 2 | |
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