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Registro Completo |
Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
Data corrente: |
25/11/2002 |
Data da última atualização: |
25/11/2002 |
Autoria: |
GUIMARAES, I. S. de S.; GOTTLIEB, O. R.; ANDRADE, C. H. S.; MAGALHAES, M. T. |
Título: |
The Chemistry of Brazilian Leguminosae: flavonoids from Dalbergia cearensis. |
Ano de publicação: |
1975 |
Fonte/Imprenta: |
Phytochemistry, New York, v. 14, p. 1452-1453, 1975. |
Idioma: |
Inglês |
Palavras-Chave: |
Flavonoides; Produto naturais. |
Thesagro: |
Dalbergia Cearensis; Leguminosa; Química. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00592naa a2200205 a 4500 001 1414243 005 2002-11-25 008 1975 bl --- 0-- u #d 100 1 $aGUIMARAES, I. S. de S. 245 $aThe Chemistry of Brazilian Leguminosae$bflavonoids from Dalbergia cearensis. 260 $c1975 650 $aDalbergia Cearensis 650 $aLeguminosa 650 $aQuímica 653 $aFlavonoides 653 $aProduto naturais 700 1 $aGOTTLIEB, O. R. 700 1 $aANDRADE, C. H. S. 700 1 $aMAGALHAES, M. T. 773 $tPhytochemistry, New York$gv. 14, p. 1452-1453, 1975.
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Embrapa Agroindústria de Alimentos (CTAA) |
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Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
08/06/2004 |
Data da última atualização: |
27/08/2018 |
Autoria: |
CANELLAS, L. P.; FAÇANHA, A. R. |
Afiliação: |
Luciano Pasqualoto Canellas; Arnoldo Rocha Façanha, Universidade Estadual do Norte Fluminense Darcy Ribeiro/Centro de Ciências e Tecnologias Agropecuárias, Laboratório de Solos. |
Título: |
Chemical nature of soil humified fractions and their bioactivity. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 39, n. 3, p. 233-240, mar. 2004 |
Idioma: |
Inglês |
Notas: |
Título em português: Natureza química do húmus do solo e sua bioatividade. |
Conteúdo: |
The aim of this work was to evaluate the humus composition from an Ultisol from Campos dos Goytacazes, RJ, Brazil. Soil samples of four depths (0-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m) and its chemical nature were analysed by elemental composition, E4/E6 ratios and Fourier transformed infrared spectroscopy. The bioactivity of these humified substances was evaluated through their action on maize root growth and H+-ATPase activity of root´s microsomes. In topsoil, the content of high condensed alkaline soluble humic substances is greater than that found in the subsuperficial layers. The chemical nature of humic and fulvic acids also varied with the soil depth. The humic acids isolated from the soil samples exhibited higher bioactivity compared with the fulvic acids. Moreover, the results suggest that more condensed humic substances can promote highest stimulation of the microsomal H+-ATPases from maize roots. These data reinforce the concept that the activity of the H+ pumps can be used as a biochemical marker for evaluation of humic substances bioactivity. |
Palavras-Chave: |
ácidos fúlvicos; ácidos húmicos; H+-ATPase. |
Thesaurus NAL: |
fulvic acids; humic acids. |
Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/108425/1/Chemical.pdf
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Marc: |
LEADER 01729naa a2200205 a 4500 001 1110092 005 2018-08-27 008 2004 bl uuuu u00u1 u #d 100 1 $aCANELLAS, L. P. 245 $aChemical nature of soil humified fractions and their bioactivity. 260 $c2004 500 $aTítulo em português: Natureza química do húmus do solo e sua bioatividade. 520 $aThe aim of this work was to evaluate the humus composition from an Ultisol from Campos dos Goytacazes, RJ, Brazil. Soil samples of four depths (0-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m) and its chemical nature were analysed by elemental composition, E4/E6 ratios and Fourier transformed infrared spectroscopy. The bioactivity of these humified substances was evaluated through their action on maize root growth and H+-ATPase activity of root´s microsomes. In topsoil, the content of high condensed alkaline soluble humic substances is greater than that found in the subsuperficial layers. The chemical nature of humic and fulvic acids also varied with the soil depth. The humic acids isolated from the soil samples exhibited higher bioactivity compared with the fulvic acids. Moreover, the results suggest that more condensed humic substances can promote highest stimulation of the microsomal H+-ATPases from maize roots. These data reinforce the concept that the activity of the H+ pumps can be used as a biochemical marker for evaluation of humic substances bioactivity. 650 $afulvic acids 650 $ahumic acids 653 $aácidos fúlvicos 653 $aácidos húmicos 653 $aH+-ATPase 700 1 $aFAÇANHA, A. R. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 39, n. 3, p. 233-240, mar. 2004
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