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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
02/12/2020 |
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Data da última atualização: |
11/01/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
JAROSCH, K.; HURTARTE, L. C. C.; GAVAZOV, K.; MUNIZ, A. W.; MÜLLER, C.; SCHWEIZER, S. |
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Afiliação: |
Klaus Jarosch, University of Bern; Luis Carlos Colocho Hurtarte, Technical University of Munich; Konstantin Gavazov, Swiss Federal Institute for Forest; ALEKSANDER WESTPHAL MUNIZ, CPAA; Christoph Müller, Justus-Liebig University Giessen; Steffen Schweizer, Technical University of Munich. |
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Título: |
Land use change in Amazonian Dark Earth and Acrisol: responses of organic carbon, organic matter composition and microbial carbon utilisation. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
In: EGU GENERAL ASSEMBLY, 2020, Vienna, Austria. Abstracts... Vienna, EGU, 2020. |
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DOI: |
https://doi.org/10.5194/egusphere-egu2020-19752 |
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Idioma: |
Inglês |
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Conteúdo: |
The conversion of tropical forest for cassava cultivation is widely known to decrease the soil organic matter (OM) and nutrient contents of highly weathered soils in the tropics. Amazonian Dark Earth (ADE) might be affected less due to their historical anthropogenic amelioration with e.g. charcoal, ceramics and bones, leading to higher soil OM and nutrient concentrations. In this study, we analysed the effect of land use change on the OM dynamics and its composition under tropical conditions, using ADE and an adjacent Acrisol (ACR) as model systems. |
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Palavras-Chave: |
Terra Preta de Índio. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/218592/1/EGU2020-19752-print.pdf
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Marc: |
LEADER 01257nam a2200193 a 4500
001 2127465
005 2021-01-11
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5194/egusphere-egu2020-19752$2DOI
100 1 $aJAROSCH, K.
245 $aLand use change in Amazonian Dark Earth and Acrisol$bresponses of organic carbon, organic matter composition and microbial carbon utilisation.$h[electronic resource]
260 $aIn: EGU GENERAL ASSEMBLY, 2020, Vienna, Austria. Abstracts... Vienna, EGU$c2020
520 $aThe conversion of tropical forest for cassava cultivation is widely known to decrease the soil organic matter (OM) and nutrient contents of highly weathered soils in the tropics. Amazonian Dark Earth (ADE) might be affected less due to their historical anthropogenic amelioration with e.g. charcoal, ceramics and bones, leading to higher soil OM and nutrient concentrations. In this study, we analysed the effect of land use change on the OM dynamics and its composition under tropical conditions, using ADE and an adjacent Acrisol (ACR) as model systems.
653 $aTerra Preta de Índio
700 1 $aHURTARTE, L. C. C.
700 1 $aGAVAZOV, K.
700 1 $aMUNIZ, A. W.
700 1 $aMÜLLER, C.
700 1 $aSCHWEIZER, S.
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
08/04/2016 |
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Data da última atualização: |
11/04/2016 |
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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: |
HORNUNG, P. S.; OLIVEIRA, C. S. de; LAZZAROTTO, M.; LAZZAROTTO, S. R. da S.; SCHNITZLER, E. |
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Afiliação: |
Polyanna Silveira Hornung, UEPG; Cristina Soltovski de Oliveira, UEPG; MARCELO LAZZAROTTO, CNPF; Simone Rosa da Silveira Lazzarotto, UEPG; Egon Schnitzler, UEPG. |
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Título: |
Investigation of the photo-oxidation of cassava starch granules: thermal, rheological and structural behaviour. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Thermal Analysis and Calorimetry, v. 123, n. 3, p. 2129-2137, Mar. 2016. |
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DOI: |
10.1007/s10973-015-4706-x |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, the combined and simultaneous actions of H2O2 and UV radiation on cassava starch granules were applied and the thermal, rheological, structural and colour properties were investigated. Samples of native cassava starch were oxidised with standard H2O2 solutions (0.1, 0.2 and 0.5 mol L-1) and exposed for 1 h under UV light (UVC radiation with k = 256 nm), with constant stirring. The solutions were subsequently filtered, washed, dried and analysed. The thermogravimetric curves showed similar behaviour, with three main mass losses and an increase in the thermal stability of each sample. The oxidative modification performed caused a strong decrease in the setback and final viscosity parameters (RVA), a gradual decrease in the gelatinisation enthalpy (DSC) and relative crystallinity (XRD) and significant differences in the average roughness of the granules (NC-AFM). The X-ray diffraction powder patterns displayed the ??A?? type for all the starch granules. The colour parameters showed a decrease in the -a* value (trend to green) for all the treated samples. |
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Palavras-Chave: |
Análise térmica; Difração de raio X; Peróxido hidrogenado. |
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Thesagro: |
Amido; Mandioca. |
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Thesaurus NAL: |
Cassava starch; Hydrogen peroxide; Thermal analysis; Ultraviolet radiation; X-ray diffraction. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02034naa a2200301 a 4500
001 2042926
005 2016-04-11
008 2016 bl uuuu u00u1 u #d
024 7 $a10.1007/s10973-015-4706-x$2DOI
100 1 $aHORNUNG, P. S.
245 $aInvestigation of the photo-oxidation of cassava starch granules$bthermal, rheological and structural behaviour.$h[electronic resource]
260 $c2016
520 $aIn this study, the combined and simultaneous actions of H2O2 and UV radiation on cassava starch granules were applied and the thermal, rheological, structural and colour properties were investigated. Samples of native cassava starch were oxidised with standard H2O2 solutions (0.1, 0.2 and 0.5 mol L-1) and exposed for 1 h under UV light (UVC radiation with k = 256 nm), with constant stirring. The solutions were subsequently filtered, washed, dried and analysed. The thermogravimetric curves showed similar behaviour, with three main mass losses and an increase in the thermal stability of each sample. The oxidative modification performed caused a strong decrease in the setback and final viscosity parameters (RVA), a gradual decrease in the gelatinisation enthalpy (DSC) and relative crystallinity (XRD) and significant differences in the average roughness of the granules (NC-AFM). The X-ray diffraction powder patterns displayed the ??A?? type for all the starch granules. The colour parameters showed a decrease in the -a* value (trend to green) for all the treated samples.
650 $aCassava starch
650 $aHydrogen peroxide
650 $aThermal analysis
650 $aUltraviolet radiation
650 $aX-ray diffraction
650 $aAmido
650 $aMandioca
653 $aAnálise térmica
653 $aDifração de raio X
653 $aPeróxido hidrogenado
700 1 $aOLIVEIRA, C. S. de
700 1 $aLAZZAROTTO, M.
700 1 $aLAZZAROTTO, S. R. da S.
700 1 $aSCHNITZLER, E.
773 $tJournal of Thermal Analysis and Calorimetry$gv. 123, n. 3, p. 2129-2137, Mar. 2016.
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Embrapa Florestas (CNPF) |
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