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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
23/11/2017 |
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Data da última atualização: |
04/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LAZZAROTTO, S. R. da S.; BET, C. D.; HORNUNG, P. S.; LAZZAROTTO, M.; SCHNITZLER, E. |
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Afiliação: |
Simone Rosa da Silveira Lazzarotto, Doutoranda da UEPG; Camila Delinski Bet, UEPG; Polyanna Silveira Hornung, UFPR; MARCELO LAZZAROTTO, CNPF; Egon Schnitzler, UEPG. |
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Título: |
Induced effects by oxidation with potassium permanganate on the thermal, morphological, colorimetric and pasting properties of corn starch. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Ukrainian Food Journal, v. 6, n. 2, p. 197-210, 2017. |
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DOI: |
10.24263/2304- 974X-2017-6-2-3 |
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Idioma: |
Inglês |
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Conteúdo: |
Introduction. Native starches are the most consumed polysaccharides in human diet. They are used in several industries as food, textile, pharmaceutic, etc. However due to some limitations starches should be modified chemically. Materials and methods. Corn starch modified with standard solutions of potassium permanganate (KMnO4) was analysed by simultaneous thermogravimetry-differential thermal analysis, differential scanning calorimetry, rapid viscoamylographic analysis, field emission gun-scanning electron microscopy/energy dispersive spectroscopy, X-ray powder diffraction and colorimetric analysis. Results and discussion. Corn starch was oxidised with KMnO4 at different concentrations (0.01; 0.02 and 0.05 mol L-1) at pH = 6.0 for 1 hour. (0.01; 0.02 and 0.05 mol L-1), pH = 6.0 for 1 hour. After filtered, washed and dried at 40 oC by 24 hours, the properties of the samples were investigated. Thermogravimetric curves showed an endothermic peak attributed to evaporation of water and two exothermic peaks, which refer to the decomposition and oxidation of organic matter until the formation of ash. A period of stability was observed, which decrease after modification. The gelatinisation of oxidised starch occurred at higher peak temperatures and also required higher gelatinisation enthalpy. The viscosity of the samples was significantly reduced and the relative crystallinity increased in proportion to the oxidant concentration used. Manganese and potassium content increased with the modification. There were no morphological changes after oxidation; however a darkening of the samples was identified due to the presence of potassium and manganese observed by energy dispersive spectroscopy (EDS). Conclusions. The obtained fluid paste with low retrogradation tendency suggests the application of oxidised starch in the paper industry. MenosIntroduction. Native starches are the most consumed polysaccharides in human diet. They are used in several industries as food, textile, pharmaceutic, etc. However due to some limitations starches should be modified chemically. Materials and methods. Corn starch modified with standard solutions of potassium permanganate (KMnO4) was analysed by simultaneous thermogravimetry-differential thermal analysis, differential scanning calorimetry, rapid viscoamylographic analysis, field emission gun-scanning electron microscopy/energy dispersive spectroscopy, X-ray powder diffraction and colorimetric analysis. Results and discussion. Corn starch was oxidised with KMnO4 at different concentrations (0.01; 0.02 and 0.05 mol L-1) at pH = 6.0 for 1 hour. (0.01; 0.02 and 0.05 mol L-1), pH = 6.0 for 1 hour. After filtered, washed and dried at 40 oC by 24 hours, the properties of the samples were investigated. Thermogravimetric curves showed an endothermic peak attributed to evaporation of water and two exothermic peaks, which refer to the decomposition and oxidation of organic matter until the formation of ash. A period of stability was observed, which decrease after modification. The gelatinisation of oxidised starch occurred at higher peak temperatures and also required higher gelatinisation enthalpy. The viscosity of the samples was significantly reduced and the relative crystallinity increased in proportion to the oxidant concentration used. Manganese and potassium content increased with... Mostrar Tudo |
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Thesagro: |
Amido; Milho; Oxidação; Permanganato de potássio. |
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Thesaurus Nal: |
Corn starch; Oxidation; Potassium permanganate. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/167360/1/2017-MarceloL-UFJ-Induced.pdf
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Marc: |
LEADER 02682naa a2200265 a 4500
001 2080555
005 2018-01-04
008 2017 bl uuuu u00u1 u #d
024 7 $a10.24263/2304- 974X-2017-6-2-3$2DOI
100 1 $aLAZZAROTTO, S. R. da S.
245 $aInduced effects by oxidation with potassium permanganate on the thermal, morphological, colorimetric and pasting properties of corn starch.$h[electronic resource]
260 $c2017
520 $aIntroduction. Native starches are the most consumed polysaccharides in human diet. They are used in several industries as food, textile, pharmaceutic, etc. However due to some limitations starches should be modified chemically. Materials and methods. Corn starch modified with standard solutions of potassium permanganate (KMnO4) was analysed by simultaneous thermogravimetry-differential thermal analysis, differential scanning calorimetry, rapid viscoamylographic analysis, field emission gun-scanning electron microscopy/energy dispersive spectroscopy, X-ray powder diffraction and colorimetric analysis. Results and discussion. Corn starch was oxidised with KMnO4 at different concentrations (0.01; 0.02 and 0.05 mol L-1) at pH = 6.0 for 1 hour. (0.01; 0.02 and 0.05 mol L-1), pH = 6.0 for 1 hour. After filtered, washed and dried at 40 oC by 24 hours, the properties of the samples were investigated. Thermogravimetric curves showed an endothermic peak attributed to evaporation of water and two exothermic peaks, which refer to the decomposition and oxidation of organic matter until the formation of ash. A period of stability was observed, which decrease after modification. The gelatinisation of oxidised starch occurred at higher peak temperatures and also required higher gelatinisation enthalpy. The viscosity of the samples was significantly reduced and the relative crystallinity increased in proportion to the oxidant concentration used. Manganese and potassium content increased with the modification. There were no morphological changes after oxidation; however a darkening of the samples was identified due to the presence of potassium and manganese observed by energy dispersive spectroscopy (EDS). Conclusions. The obtained fluid paste with low retrogradation tendency suggests the application of oxidised starch in the paper industry.
650 $aCorn starch
650 $aOxidation
650 $aPotassium permanganate
650 $aAmido
650 $aMilho
650 $aOxidação
650 $aPermanganato de potássio
700 1 $aBET, C. D.
700 1 $aHORNUNG, P. S.
700 1 $aLAZZAROTTO, M.
700 1 $aSCHNITZLER, E.
773 $tUkrainian Food Journal$gv. 6, n. 2, p. 197-210, 2017.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Registros recuperados : 124 | |
| 61. |  | WELKE, J. E.; BARBARÁ, J. A.; ZANUS, M. C.; LAZZAROTTO, M.; ZINI, C. A. Determination of the possible contribution to aroma using odor activity values of volatile compounds of wines analyzed by comprehensive two dimensional gas chromatography. In: CONGRESSO LATINOAMERICANO DE CROMATOGRAFIA Y TÉCNICAS AFINES, 15.; CONGRESSO COLOMBIANO DE CROMATOGRAFIA, 7., 2014, Cartagena de Indias, Colombia. Presentaciones en poster: alimientos y bebidas. Bogotá: Sociedad Colombiana de Ciencias Químicas, 2014. p. 205| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas; Embrapa Uva e Vinho. |
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| 62. | | FERRAREZE, J. P.; SILVA, G. A. da; LAZZAROTTO, M.; FABBRIS, F.; GIRARDI, C. L. Eficácia de diferentes extratores de polifenóis totais e antioxidantes em maçã. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA UVA E VINHO, 5., ENCONTRO DE PÓS-GRADUANDOS DA EMBRAPA UVA E VINHO, 1., 2007, Bento Gonçalves. Resumos. Bento Gonçalves: Embrapa Uva e Vinho, 2007. p. 44. (Embrapa Uva e Vinho. Documentos, 63). Resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| 65. | | HORNUNG, P. S.; LAZZAROTTO, S, R. da S.; OLIVEIRA, C. S. de; LAZZAROTTO, M.; SCHNITZLER, E. Simultaneous TG-DTA and DSC techniques on pinhão starch double modified. Brazilian Journal of Thermal Analysis, v. 7, p. 104-107, 2015. Disponível na internet. Edição dos Anais do 7º Simpósio de Análise Térmica, 2015, Bauru.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 66. | | MIRESKI, M. C.; MEDEIROS, A. C. de S.; WENDLING, I.; PEÑA PEÑA, M. L.; LAZZAROTTO, M. Seeds dehydration and embryonic development of Ilex paraguariensis. Informativo ABRATES, Brasília, DF, v. 25, n. 2, set. 2015. Edição de resumos do 19º Congresso Brasileiro de Sementes, Foz do Iguaçu, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 68. | | HORNUNG, P. S.; OLIVEIRA, C. S. de; LAZZAROTTO, M.; LAZZAROTTO, S. R. da S.; SCHNITZLER, E. Investigation of the photo-oxidation of cassava starch granules: thermal, rheological and structural behaviour. Journal of Thermal Analysis and Calorimetry, v. 123, n. 3, p. 2129-2137, Mar. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| 72. | | LEMES, B. M.; RISTOW, N.; BET, C. D.; OLIVEIRA, C. S.; LAZZAROTTO, M.; SCHNITZLER, E. Study of isolated starches of pinhão seeds marketed in the Brazilian Southern region. Brazilian Journal of Thermal Analysis, v. 6, n. 4, p. 39-47, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
| Biblioteca(s): Embrapa Florestas. |
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| 76. | | LAZZAROTTO, M.; RIBEIRO, L. S.; CORDOBA, L. do P.; GODOY, R. C. B. de; SCHNITZLER, E. Thermal tool in the evaluation of the "pinhão'' (seed of Araucaria angustifolia) starch aimed agroindustrial process. Brazilian Journal of Thermal Analysis, v. 7, p. 144-147, 2015. Disponível na internet. Edição dos Anais do 7º Simpósio de Análise Térmica, 2015, Bauru.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| 80. | | BRITO, F. C. de; ÁVILA, S.; PACHECO, S. D. G.; SILVEIRA, A. C. da; VARGAS, V. M. F.; LAZZAROTTO, M. Avaliação do desenvolvimento dos frutos de Ilex paraguariensis St.Hil. In: SEMANA DE APERFEIÇOAMENTO EM ENGENHARIA FLORESTAL DA UFPR, 2., 2018, Curitiba. Anais. Curitiba: CIFLOMA, 2018. 4 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 124 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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