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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
22/11/2019 |
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Data da última atualização: |
22/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ARAÚJO, F. S.; BARROSO, J. R.; FREITAS, L. de O.; TEODORO, M. S.; SOUZA, Z. M. de; TORRES, J. L. R. |
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Afiliação: |
FERNANDO S. ARAÚJO, UESPI, Parnaíba, PI.; JOSUÉ R. BARROSO, UESPI, Parnaíba, PI.; LUCAS DE O. FREITAS, UESPI, Parnaíba, PI.; MAURO SERGIO TEODORO, CPAMN; ZIGOMAR M. DE SOUZA, Universidade Estadual de Campinas; JOSE L. R. TORRES, Instituto Federal do Triângulo Mineiro. Uberaba, MG, Brasil. |
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Título: |
Chemical attributes and microbial activity of soil cultivated with cassava under different cover crops. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Revista Brasileira de Engenharia Agrícola e Ambiental, v. 23, n. 8, p. 614-619, 2019. |
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DOI: |
http://dx.doi.org/10.1590/1807-1929/agriambi.v23n8p614-619 |
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Idioma: |
Inglês |
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Conteúdo: |
Conservationist systems of crop management increases the amount of substrate, alters fertility and increases soil biological activity. The objective of this study was to evaluate the influence of soil management systems on the chemical attributes and microbial activity of soil under cassava crop. |
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Palavras-Chave: |
Biomassa microbiana do solo; Resíduos vegetais. |
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Thesagro: |
Canavalia Ensiformis; Crotalária Juncea; Manihot Esculenta. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/205246/1/ChemicalAttributesMicrobialMauroTeodoroAgriambiv23n8.2019.pdf
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Marc: |
LEADER 01160naa a2200253 a 4500
001 2114921
005 2019-11-22
008 2019 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1807-1929/agriambi.v23n8p614-619$2DOI
100 1 $aARAÚJO, F. S.
245 $aChemical attributes and microbial activity of soil cultivated with cassava under different cover crops.$h[electronic resource]
260 $c2019
520 $aConservationist systems of crop management increases the amount of substrate, alters fertility and increases soil biological activity. The objective of this study was to evaluate the influence of soil management systems on the chemical attributes and microbial activity of soil under cassava crop.
650 $aCanavalia Ensiformis
650 $aCrotalária Juncea
650 $aManihot Esculenta
653 $aBiomassa microbiana do solo
653 $aResíduos vegetais
700 1 $aBARROSO, J. R.
700 1 $aFREITAS, L. de O.
700 1 $aTEODORO, M. S.
700 1 $aSOUZA, Z. M. de
700 1 $aTORRES, J. L. R.
773 $tRevista Brasileira de Engenharia Agrícola e Ambiental$gv. 23, n. 8, p. 614-619, 2019.
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Embrapa Meio-Norte (CPAMN) |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
24/03/2020 |
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Data da última atualização: |
09/06/2020 |
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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: |
DUTRA, L. M.; SANTOS, A. D. da C.; LOURENÇO, A. V. F.; NAGATA, N.; HEIDEN, G.; CAMPOS, F. R.; BARISON, A. |
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Afiliação: |
LIVIA MACEDO DUTRA; ALAN DIEGO DA CONCEIÇÃO SANTOS; ALLAN VINICIUS FELIX LOURENÇO; NOEMI NAGATA; GUSTAVO HEIDEN, CPACT; FRANCINETE RAMOS CAMPOS; ANDERSSON BARISON. |
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Título: |
1H HR-MAS NMR and chemometric methods for discrimination and classification of Baccharis (Asteraceae): A proposal for quality control of Baccharis trimera. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Journal of Pharmaceutical and Biomedical Analysis, v. 184, 113200, 2020. |
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ISSN: |
0731-7085 |
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DOI: |
https://doi.org/10.1016/j.jpba.2020.113200 |
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Idioma: |
Inglês |
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Conteúdo: |
Baccharis trimera is a species recognized by health agencies and recommended by the Brazilian Pharmacopoeia by having medicinal properties. In this work, HR-MAS NMR spectroscopy combined with chemometric tools, such as Principal Components Analysis (PCA), Partial Least Squares Discriminant Analysis (PLS-DA) and Soft Independent Modeling by Class Analogy (SIMCA), were used to evaluate the quality control and authenticity of commercial samples of Baccharis, as well as to discriminate B. trimera samples from other species of the Caulopterae section (B. articulata, B. trimera, B. junciformis, B. milleflora, and B. myriocephala). The high morphological similarity of these species makes it difficult for their identifications and discriminations, even by taxonomists. Different PCA pre-processing (autoscaling, Pareto scaling, and mean centering) allowed to discriminate B. trimera and B. myriocephala from the other species, mainly due to the presence of carquejyl acetate, indicated their chemical similarity. The 1H HR-MAS NMR spectral profile offers the possibility of tracking not only the chemical markers, such as the presence of carquejyl acetate, which can also be helpful in the B. trimera authentication/identification. The application of classification methods in standard samples revealed that PLS-DA models showed better performance on the calibration and validation sets than SIMCA model. However, PLS-DA and SIMCA applied to commercial samples showed that none ofthe commercial samples were classified as B. trimera, which suggested the lack of strict quality control regarding these products. The methodology developed in the present work might contribute to chemotaxonomy of the genus Baccharis. MenosBaccharis trimera is a species recognized by health agencies and recommended by the Brazilian Pharmacopoeia by having medicinal properties. In this work, HR-MAS NMR spectroscopy combined with chemometric tools, such as Principal Components Analysis (PCA), Partial Least Squares Discriminant Analysis (PLS-DA) and Soft Independent Modeling by Class Analogy (SIMCA), were used to evaluate the quality control and authenticity of commercial samples of Baccharis, as well as to discriminate B. trimera samples from other species of the Caulopterae section (B. articulata, B. trimera, B. junciformis, B. milleflora, and B. myriocephala). The high morphological similarity of these species makes it difficult for their identifications and discriminations, even by taxonomists. Different PCA pre-processing (autoscaling, Pareto scaling, and mean centering) allowed to discriminate B. trimera and B. myriocephala from the other species, mainly due to the presence of carquejyl acetate, indicated their chemical similarity. The 1H HR-MAS NMR spectral profile offers the possibility of tracking not only the chemical markers, such as the presence of carquejyl acetate, which can also be helpful in the B. trimera authentication/identification. The application of classification methods in standard samples revealed that PLS-DA models showed better performance on the calibration and validation sets than SIMCA model. However, PLS-DA and SIMCA applied to commercial samples showed that none ofthe commercial sa... Mostrar Tudo |
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Palavras-Chave: |
Baccharis trimera; Caulopterae; Espectroscopia; Quimiotaxonomia. |
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Thesagro: |
Baccharis; Taxonomia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02640naa a2200289 a 4500
001 2121354
005 2020-06-09
008 2020 bl uuuu u00u1 u #d
022 $a0731-7085
024 7 $ahttps://doi.org/10.1016/j.jpba.2020.113200$2DOI
100 1 $aDUTRA, L. M.
245 $a1H HR-MAS NMR and chemometric methods for discrimination and classification of Baccharis (Asteraceae)$bA proposal for quality control of Baccharis trimera.$h[electronic resource]
260 $c2020
520 $aBaccharis trimera is a species recognized by health agencies and recommended by the Brazilian Pharmacopoeia by having medicinal properties. In this work, HR-MAS NMR spectroscopy combined with chemometric tools, such as Principal Components Analysis (PCA), Partial Least Squares Discriminant Analysis (PLS-DA) and Soft Independent Modeling by Class Analogy (SIMCA), were used to evaluate the quality control and authenticity of commercial samples of Baccharis, as well as to discriminate B. trimera samples from other species of the Caulopterae section (B. articulata, B. trimera, B. junciformis, B. milleflora, and B. myriocephala). The high morphological similarity of these species makes it difficult for their identifications and discriminations, even by taxonomists. Different PCA pre-processing (autoscaling, Pareto scaling, and mean centering) allowed to discriminate B. trimera and B. myriocephala from the other species, mainly due to the presence of carquejyl acetate, indicated their chemical similarity. The 1H HR-MAS NMR spectral profile offers the possibility of tracking not only the chemical markers, such as the presence of carquejyl acetate, which can also be helpful in the B. trimera authentication/identification. The application of classification methods in standard samples revealed that PLS-DA models showed better performance on the calibration and validation sets than SIMCA model. However, PLS-DA and SIMCA applied to commercial samples showed that none ofthe commercial samples were classified as B. trimera, which suggested the lack of strict quality control regarding these products. The methodology developed in the present work might contribute to chemotaxonomy of the genus Baccharis.
650 $aBaccharis
650 $aTaxonomia
653 $aBaccharis trimera
653 $aCaulopterae
653 $aEspectroscopia
653 $aQuimiotaxonomia
700 1 $aSANTOS, A. D. da C.
700 1 $aLOURENÇO, A. V. F.
700 1 $aNAGATA, N.
700 1 $aHEIDEN, G.
700 1 $aCAMPOS, F. R.
700 1 $aBARISON, A.
773 $tJournal of Pharmaceutical and Biomedical Analysis$gv. 184, 113200, 2020.
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