|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Agrossilvipastoril. Para informações adicionais entre em contato com cpamt.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Agrossilvipastoril. |
Data corrente: |
02/12/2021 |
Data da última atualização: |
02/12/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FIRMINO, F. H. T.; CAMÊLO, D. de L.; NASCIMENTO, A. F. do; LIMA, J. R. de S.; SOUZA JUNIOR, V.; ALMEIDA, B. G. de; CORRÊA, M. M. |
Afiliação: |
FRANCIS HENRIQUE TENÓRIO FIRMINO, UFRPE, Recife-PE; DANILO DE LIMA CAMÊLO, UFES, Alegre-ES; ALEXANDRE FERREIRA DO NASCIMENTO, CPAMT; JOSÉ ROMUALDO DE SOUZA LIMA, UFAPE, Garanhuns-PE; VALDOMIRO SOUZA JUNIOR, UFRPE, Recife-PE; BRIVALDO GOMES DE ALMEIDA, UFRPE, Recife-PE; MARCELO METRI CORRÊA, UFAPE, Garanhuns-PE. |
Título: |
Genesis of lamellae in sandy soils: A case study in a semi-arid region in NE-Brazil. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Geoderma, v. 406, 115447, 2022. |
ISSN: |
0016-7061 |
DOI: |
https://doi.org/10.1016/j.geoderma.2021.115447 |
Idioma: |
Inglês |
Conteúdo: |
The occurrence of lamellae in soils and sediments has direct implications for agricultural production, and for stratigraphic and geomorphological studies. Although lamellae have been studied for more than a century, their origin remains controversial. The aim of this study was to identify the origin and formation mechanisms of lamellae in autochthonous soils developed from metamorphic rocks in a semi-arid area of Northeast Brazil. As such, the spatial organization of soil profiles was evaluated in a topolithosequence, through structural analysis of the pedological coverage for subsequent soil sampling. Morphological, chemical, physical, sedimentological, mineralogical, and micromorphological analyses were carried out on the studied slope and in greater detail in four soil profiles. The results indicated that clay particles predominantly smaller than 0.2 µm are eluviated in a sandy soil matrix, infilling voids and coating quartz grains, which are organized in layers of densely packed fine sand, impeding clay translocation and helping form lamellae. Although the micromorphological properties of the lamellae demonstrate their pedogenic origin, the contribution of strips of polycrystalline quartz constitutes a petrogenic component of the illuviation process. Therefore, the genesis of the lamellae is better described based on a petro-pedogenic origin. We suggest a restructuring of the concept of petro-pedogenic origins, including the structural influence of metamorphic rocks, as illuviated clay deposition occurs in accordance with a physical barrier provoked by the increase and organization of fine sand particles, distributed horizontally and in parallel, arising from the disintegration of polycrystalline quartz grains, which indicates geological control in the genesis of lamellae, corresponding to petrogenic evidence. Furthermore, the morphological distinction of the lamellae seems to be more associated with the fine sand content (<0.25 mm), and its packing with larger grains of quartz in the soils. MenosThe occurrence of lamellae in soils and sediments has direct implications for agricultural production, and for stratigraphic and geomorphological studies. Although lamellae have been studied for more than a century, their origin remains controversial. The aim of this study was to identify the origin and formation mechanisms of lamellae in autochthonous soils developed from metamorphic rocks in a semi-arid area of Northeast Brazil. As such, the spatial organization of soil profiles was evaluated in a topolithosequence, through structural analysis of the pedological coverage for subsequent soil sampling. Morphological, chemical, physical, sedimentological, mineralogical, and micromorphological analyses were carried out on the studied slope and in greater detail in four soil profiles. The results indicated that clay particles predominantly smaller than 0.2 µm are eluviated in a sandy soil matrix, infilling voids and coating quartz grains, which are organized in layers of densely packed fine sand, impeding clay translocation and helping form lamellae. Although the micromorphological properties of the lamellae demonstrate their pedogenic origin, the contribution of strips of polycrystalline quartz constitutes a petrogenic component of the illuviation process. Therefore, the genesis of the lamellae is better described based on a petro-pedogenic origin. We suggest a restructuring of the concept of petro-pedogenic origins, including the structural influence of metamorphic rocks, as ... Mostrar Tudo |
Thesagro: |
Solo Arenoso. |
Thesaurus Nal: |
Clay; Geomorphology; Infiltration (hydrology); Metamorphic rocks; Quartz; Regosols; Sandy soils; Sediments; Semiarid soils; Semiarid zones; Stratigraphy. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 03044naa a2200361 a 4500 001 2136974 005 2021-12-02 008 2022 bl uuuu u00u1 u #d 022 $a0016-7061 024 7 $ahttps://doi.org/10.1016/j.geoderma.2021.115447$2DOI 100 1 $aFIRMINO, F. H. T. 245 $aGenesis of lamellae in sandy soils$bA case study in a semi-arid region in NE-Brazil.$h[electronic resource] 260 $c2022 520 $aThe occurrence of lamellae in soils and sediments has direct implications for agricultural production, and for stratigraphic and geomorphological studies. Although lamellae have been studied for more than a century, their origin remains controversial. The aim of this study was to identify the origin and formation mechanisms of lamellae in autochthonous soils developed from metamorphic rocks in a semi-arid area of Northeast Brazil. As such, the spatial organization of soil profiles was evaluated in a topolithosequence, through structural analysis of the pedological coverage for subsequent soil sampling. Morphological, chemical, physical, sedimentological, mineralogical, and micromorphological analyses were carried out on the studied slope and in greater detail in four soil profiles. The results indicated that clay particles predominantly smaller than 0.2 µm are eluviated in a sandy soil matrix, infilling voids and coating quartz grains, which are organized in layers of densely packed fine sand, impeding clay translocation and helping form lamellae. Although the micromorphological properties of the lamellae demonstrate their pedogenic origin, the contribution of strips of polycrystalline quartz constitutes a petrogenic component of the illuviation process. Therefore, the genesis of the lamellae is better described based on a petro-pedogenic origin. We suggest a restructuring of the concept of petro-pedogenic origins, including the structural influence of metamorphic rocks, as illuviated clay deposition occurs in accordance with a physical barrier provoked by the increase and organization of fine sand particles, distributed horizontally and in parallel, arising from the disintegration of polycrystalline quartz grains, which indicates geological control in the genesis of lamellae, corresponding to petrogenic evidence. Furthermore, the morphological distinction of the lamellae seems to be more associated with the fine sand content (<0.25 mm), and its packing with larger grains of quartz in the soils. 650 $aClay 650 $aGeomorphology 650 $aInfiltration (hydrology) 650 $aMetamorphic rocks 650 $aQuartz 650 $aRegosols 650 $aSandy soils 650 $aSediments 650 $aSemiarid soils 650 $aSemiarid zones 650 $aStratigraphy 650 $aSolo Arenoso 700 1 $aCAMÊLO, D. de L. 700 1 $aNASCIMENTO, A. F. do 700 1 $aLIMA, J. R. de S. 700 1 $aSOUZA JUNIOR, V. 700 1 $aALMEIDA, B. G. de 700 1 $aCORRÊA, M. M. 773 $tGeoderma$gv. 406, 115447, 2022.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
07/12/2016 |
Data da última atualização: |
29/12/2017 |
Autoria: |
ALMEIDA, A. C. de; MORÃO, R. P.; MARTINS, E. R.; FONSECA, F. S. A. da; SOUZA, C. N. de; PRATES, J. P. B.; OLIVEIRA, F. D. de; SILVA, L. M. V. |
Afiliação: |
ANNA CHRISTINA DE ALMEIDA, UFMG; RODRIGO PEREIRA MORÃO, UFMG; ERNANE RONIE MARTINS, UFMG; FRANCINE SOUZA ALVES DA FONSECA, UFMG; CINTYA NEVES DE SOUZA, UFMG; JOÃO PAULO BICALHO PRATES, UFMG; FÁBIO DIAS DE OLIVEIRA, UFMG; LÍVIA MARA VITORINO DA SILVA, UFMG. |
Título: |
Atividade antisséptica do óleo essencial de Lippia origanoides Cham. (Alecrim-pimenta) na presença de leite bovino. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 9, p. 905-911, set. 2016. |
Idioma: |
Português |
Conteúdo: |
Objetivou-se determinar atividade antisséptica do óleo essencial de Lippia origanoides na presença de leite bovino. A composição química do óleo essencial de alecrim pimenta foi determinada por cromatografia gasosa acoplada à espectrometria de massas (CG-EM), sendo detectados 53 compostos, dos quais 16 foram identificados (>0,1% área total). O carvacrol (32,7%), p-cimeno (23%), timilmetil éter, cariofileno (7,98%) e o γ-terpineno (5,40%) foram os componentes mais abundantes. A concentração inibitória mínima para Staphylococcus aureus ATCC 25923 e E. coli ATCC 8739 foi de 60μL/mL, enquanto para Salmonella Choleraesuis ATCC 35640 foi de 90μL/mL. A concentração bactericida mínima foi de 120μL/mL para as três bactérias. Avaliou-se a atividade antisséptica do óleo essencial na concentração de 120μL/mL na presença de leite bovino sobre as mesmas cepas bacterianas. O óleo em estudo apresentou efeito inibitório do crescimento das cepas em diferentes tempos de ação (p<0,05). S. aureus apresentou maiores índices de inibição após 5 min de contato e Escherichia coli e Salmonella Choleraesuis após 15 min. O óleo essencial de alecrim-pimenta revelou ser um potencial antimicrobiano natural, mesmo na presença de matéria orgânica constituída de uma matriz nutricional complexa que é o leite bovino. |
Palavras-Chave: |
Alecrim-pimenta; Antimicrobiano natural; Antiseptic activity; Atividade antisséptica; Efeito inibitório; Inhibitory effect; Leite bovino; Natural antimicrobials; Timol. |
Thesagro: |
Óleo essencial. |
Thesaurus NAL: |
Carvacrol; Essential oils; Lippia origanoides; Milk; Thymol. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/151444/1/Atividade-antisseptica-do-oleo.pdf
|
Marc: |
LEADER 02504naa a2200385 a 4500 001 2058219 005 2017-12-29 008 2016 bl uuuu u00u1 u #d 100 1 $aALMEIDA, A. C. de 245 $aAtividade antisséptica do óleo essencial de Lippia origanoides Cham. (Alecrim-pimenta) na presença de leite bovino. 260 $c2016 520 $aObjetivou-se determinar atividade antisséptica do óleo essencial de Lippia origanoides na presença de leite bovino. A composição química do óleo essencial de alecrim pimenta foi determinada por cromatografia gasosa acoplada à espectrometria de massas (CG-EM), sendo detectados 53 compostos, dos quais 16 foram identificados (>0,1% área total). O carvacrol (32,7%), p-cimeno (23%), timilmetil éter, cariofileno (7,98%) e o γ-terpineno (5,40%) foram os componentes mais abundantes. A concentração inibitória mínima para Staphylococcus aureus ATCC 25923 e E. coli ATCC 8739 foi de 60μL/mL, enquanto para Salmonella Choleraesuis ATCC 35640 foi de 90μL/mL. A concentração bactericida mínima foi de 120μL/mL para as três bactérias. Avaliou-se a atividade antisséptica do óleo essencial na concentração de 120μL/mL na presença de leite bovino sobre as mesmas cepas bacterianas. O óleo em estudo apresentou efeito inibitório do crescimento das cepas em diferentes tempos de ação (p<0,05). S. aureus apresentou maiores índices de inibição após 5 min de contato e Escherichia coli e Salmonella Choleraesuis após 15 min. O óleo essencial de alecrim-pimenta revelou ser um potencial antimicrobiano natural, mesmo na presença de matéria orgânica constituída de uma matriz nutricional complexa que é o leite bovino. 650 $aCarvacrol 650 $aEssential oils 650 $aLippia origanoides 650 $aMilk 650 $aThymol 650 $aÓleo essencial 653 $aAlecrim-pimenta 653 $aAntimicrobiano natural 653 $aAntiseptic activity 653 $aAtividade antisséptica 653 $aEfeito inibitório 653 $aInhibitory effect 653 $aLeite bovino 653 $aNatural antimicrobials 653 $aTimol 700 1 $aMORÃO, R. P. 700 1 $aMARTINS, E. R. 700 1 $aFONSECA, F. S. A. da 700 1 $aSOUZA, C. N. de 700 1 $aPRATES, J. P. B. 700 1 $aOLIVEIRA, F. D. de 700 1 $aSILVA, L. M. V. 773 $tPesquisa Veterinária Brasileira, Rio de Janeiro$gv. 36, n. 9, p. 905-911, set. 2016.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|