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Registro Completo |
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
12/02/2014 |
Data da última atualização: |
10/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
AGUIAR, N. O.; NOVOTNY, E. H.; OLIVEIRA, A. L.; RUMJANEK, V. M.; OLIVARES, F. L.; CANELLAS, L. P. |
Afiliação: |
Núcleo de Desenvolvimento de Insumos Biológicos para a Agricultura (Nudiba), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF); ETELVINO HENRIQUE NOVOTNY, CNPS; Laboratório de Química do Núcleo de Criminalística da Superintendência da Polícia Federal no Estado do Rio de Janeiro; Laboratório de Química do Núcleo de Criminalística da Superintendência da Polícia Federal no Estado do Rio de Janeiro; Núcleo de Desenvolvimento de Insumos Biológicos para a Agricultura (Nudiba), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF); L.P. Canellas, Núcleo de Desenvolvimento de Insumos Biológicos para a Agricultura (Nudiba), Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF). |
Título: |
Prediction of humic acids bioactivity using spectroscopy and multivariate analysis. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Journal of Geochemical Exploration, v. 129, p. 95-102, Jun. 2013. |
DOI: |
https://doi.org/10.1016/j.gexplo.2012.10.005 |
Idioma: |
Inglês |
Conteúdo: |
Humic substances (HS) represent the organic material most widespread in nature and have positive effects on plant physiology influencing nutrient uptake and root architecture. Understanding the structure-activity relationship has been considered an essential step to drive technological approaches to produce HS with enhanced plant growth promotion performance. In this studywe used solid state nuclear magnetic resonance (CP-MAS 13C NMR) and infrared spectroscopy with diffuse reflectance (DRIFT), a collection of data from humic acid-like substances (HA) obtained from vermicompost produced with different sources of raw material and maturation stage. The bioactivity was evaluated using the ability of HA to induce lateral root emergence sites as well acidification of the liquidmediumby treated-maize root seedlings. The structure-activity relationshipwas done using multivariate analysis including principal component analysis (PCA), principal component regression (PCR) and Spearman correlation joined with NMR and DRIFT results. The main variables (higher loadings) correlated with HA bioactivity were for NMR positive loadings for lignin (56 ppm, 124 ppm, 148 and 153 ppm) and COOH groups (174 ppm) and negative loadings for carbohydrates (64, 75 and 102 ppm). For DRIFT the main positive loadings were aryl stretching and bending (1560, 1480, 860 and 780 cm-1) probably from lignins; for 2926 cm-1 and 2852 cm-1 due to C-H asymmetric and symmetric stretching, respectively, probably from long chain fat acids due to the presence of rocking absorption band of (CH2)n with n>4 at 720 cm-1 and negative loadings due to carbohydrate moieties (around 1100 cm-1, C-O stretching) and carboxylic acids (1724 cm-1, C-O stretching and 1220 cm-1, C-OH stretching and CO-H bending). The use of spectroscopy data to attempt to relate structure to bioactivity may be of practical interest in developing plant growth promoters using renewed source of humic materials. MenosHumic substances (HS) represent the organic material most widespread in nature and have positive effects on plant physiology influencing nutrient uptake and root architecture. Understanding the structure-activity relationship has been considered an essential step to drive technological approaches to produce HS with enhanced plant growth promotion performance. In this studywe used solid state nuclear magnetic resonance (CP-MAS 13C NMR) and infrared spectroscopy with diffuse reflectance (DRIFT), a collection of data from humic acid-like substances (HA) obtained from vermicompost produced with different sources of raw material and maturation stage. The bioactivity was evaluated using the ability of HA to induce lateral root emergence sites as well acidification of the liquidmediumby treated-maize root seedlings. The structure-activity relationshipwas done using multivariate analysis including principal component analysis (PCA), principal component regression (PCR) and Spearman correlation joined with NMR and DRIFT results. The main variables (higher loadings) correlated with HA bioactivity were for NMR positive loadings for lignin (56 ppm, 124 ppm, 148 and 153 ppm) and COOH groups (174 ppm) and negative loadings for carbohydrates (64, 75 and 102 ppm). For DRIFT the main positive loadings were aryl stretching and bending (1560, 1480, 860 and 780 cm-1) probably from lignins; for 2926 cm-1 and 2852 cm-1 due to C-H asymmetric and symmetric stretching, respectively, probably from lo... Mostrar Tudo |
Palavras-Chave: |
Análise multivariada; Efeitos fisiológicos; Espectroscopia RMN; Relação bioatividade estrutural; Tração. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02769naa a2200253 a 4500 001 1979549 005 2021-11-10 008 2013 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.gexplo.2012.10.005$2DOI 100 1 $aAGUIAR, N. O. 245 $aPrediction of humic acids bioactivity using spectroscopy and multivariate analysis.$h[electronic resource] 260 $c2013 520 $aHumic substances (HS) represent the organic material most widespread in nature and have positive effects on plant physiology influencing nutrient uptake and root architecture. Understanding the structure-activity relationship has been considered an essential step to drive technological approaches to produce HS with enhanced plant growth promotion performance. In this studywe used solid state nuclear magnetic resonance (CP-MAS 13C NMR) and infrared spectroscopy with diffuse reflectance (DRIFT), a collection of data from humic acid-like substances (HA) obtained from vermicompost produced with different sources of raw material and maturation stage. The bioactivity was evaluated using the ability of HA to induce lateral root emergence sites as well acidification of the liquidmediumby treated-maize root seedlings. The structure-activity relationshipwas done using multivariate analysis including principal component analysis (PCA), principal component regression (PCR) and Spearman correlation joined with NMR and DRIFT results. The main variables (higher loadings) correlated with HA bioactivity were for NMR positive loadings for lignin (56 ppm, 124 ppm, 148 and 153 ppm) and COOH groups (174 ppm) and negative loadings for carbohydrates (64, 75 and 102 ppm). For DRIFT the main positive loadings were aryl stretching and bending (1560, 1480, 860 and 780 cm-1) probably from lignins; for 2926 cm-1 and 2852 cm-1 due to C-H asymmetric and symmetric stretching, respectively, probably from long chain fat acids due to the presence of rocking absorption band of (CH2)n with n>4 at 720 cm-1 and negative loadings due to carbohydrate moieties (around 1100 cm-1, C-O stretching) and carboxylic acids (1724 cm-1, C-O stretching and 1220 cm-1, C-OH stretching and CO-H bending). The use of spectroscopy data to attempt to relate structure to bioactivity may be of practical interest in developing plant growth promoters using renewed source of humic materials. 653 $aAnálise multivariada 653 $aEfeitos fisiológicos 653 $aEspectroscopia RMN 653 $aRelação bioatividade estrutural 653 $aTração 700 1 $aNOVOTNY, E. H. 700 1 $aOLIVEIRA, A. L. 700 1 $aRUMJANEK, V. M. 700 1 $aOLIVARES, F. L. 700 1 $aCANELLAS, L. P. 773 $tJournal of Geochemical Exploration$gv. 129, p. 95-102, Jun. 2013.
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Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
19/02/2001 |
Data da última atualização: |
12/06/2023 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
PRIMAVESI, O. M. A. S. P. R.; PRIMAVESI, A. C. P. de A.; CORREA, L. de A.; CANTARELLA, H.; SILVA, A. G. |
Afiliação: |
ODO MARIA ARTUR S P R PRIMAVESI, CPPSE; ANA CANDIDA PACHECO DE A PRIMAVESI, CPPSE; LUCIANO DE ALMEIDA CORREA, CPPSE; H. CANTARELLA, IAC; ALIOMAR GABRIEL SILVA, CPPSE. |
Título: |
Soil nitrate level variation under intensive nitrogen fertilized coastcross pasture. |
Ano de publicação: |
2001 |
Fonte/Imprenta: |
In: INTERNATIONAL GRASSLAND CONGRESS, 19., 2001, São Pedro, SP. Proceedings... Piracicaba: FEALQ, 2001. |
Páginas: |
p. 195-196. |
Idioma: |
Inglês |
Conteúdo: |
Nitrate levels in soil profile after the first N application on coastcross pasture, grown on a dark red latosol (Hapludox), in Sao Carlos, SP, Brazil, under tropical altitude climate, were measured at 7-day intervals, to monitor possible losse in depth. Soil nitrate rates varied with high rates of N-ammonium nitrate (200kg ha per cutting) in surface layers. Danger of environmental impact was low in the studied conditions. |
Palavras-Chave: |
coastcross; Cynodom dactylon cv; Pasture; Soil nitrate. |
Thesaurus NAL: |
ammonium nitrate; urea. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/251654/1/SoilNitrateLeveiVariation.pdf
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Marc: |
LEADER 01186nam a2200241 a 4500 001 1045250 005 2023-06-12 008 2001 bl uuuu u00u1 u #d 100 1 $aPRIMAVESI, O. M. A. S. P. R. 245 $aSoil nitrate level variation under intensive nitrogen fertilized coastcross pasture.$h[electronic resource] 260 $aIn: INTERNATIONAL GRASSLAND CONGRESS, 19., 2001, São Pedro, SP. Proceedings... Piracicaba: FEALQ$c2001 300 $ap. 195-196. 520 $aNitrate levels in soil profile after the first N application on coastcross pasture, grown on a dark red latosol (Hapludox), in Sao Carlos, SP, Brazil, under tropical altitude climate, were measured at 7-day intervals, to monitor possible losse in depth. Soil nitrate rates varied with high rates of N-ammonium nitrate (200kg ha per cutting) in surface layers. Danger of environmental impact was low in the studied conditions. 650 $aammonium nitrate 650 $aurea 653 $acoastcross 653 $aCynodom dactylon cv 653 $aPasture 653 $aSoil nitrate 700 1 $aPRIMAVESI, A. C. P. de A. 700 1 $aCORREA, L. de A. 700 1 $aCANTARELLA, H. 700 1 $aSILVA, A. G.
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