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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
11/03/2019 |
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Data da última atualização: |
30/10/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HORNUNG, P. S.; LAZZAROTTO, S. R. da S.; BELLETTINI, M. B.; LAZZAROTTO, M.; BETA, T.; RIBANI, R. H.; SCHNITZLER, E. |
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Afiliação: |
Polyanna S. Hornung, UFPR; Simone Rosa da Silveira Lazzarotto, Doutoranda da UEPG; Marcelo B. Bellettini, UFPR; MARCELO LAZZAROTTO, CNPF; Trust Beta, University of Manitoba; Rosemary H. Ribani, UFPR; Egon Schnitzler, UEPG. |
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Título: |
Novel oxidized and UV-irradiated Araucaria angustifolia pine seed starch for enhanced functional properties. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Starch, v. 71, n. 3/4, 1800140, March 2019. 10 p. |
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DOI: |
10.1002/star.201800140 |
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Idioma: |
Inglês |
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Conteúdo: |
Starch is an important raw material for industrial processes. Therefore, an investigation of new sources of starch and starch modification methods is necessary. The dual oxidation effect on the properties of the native pine seed starch is investigated. Native starch is extracted from pine seeds and its proximate composition determined. The starch is then subjected to a dual oxidation process in standard NaClO or H2O2 solutions (0.2; 0.5; 0.8 mol L1) and simultaneous exposure to ultraviolet light irradiation (UVC ? ¼ 254 nm). Thermogravimetric (TG-DTA) curves reveal enhanced stability to thermal degradation of the dual NaClO/UV process modified starch up to 20%. Differential scanning calorimetry (DSC) shows a strong decrease in gelatinization enthalpy due to the action of the UV-rays coupled with the sodium hypochlorite (NaClO) solution. The H2O2/UV modified starch has a high final viscosity while the NaClO/UV starch pastes have a low tendency to recrystallize. Furthermore, structural analysis using an X-ray diffractometer and scanning electron microscopy (SEM) show crystallinity patterns of type A starch and that the shape of the starch granules are unaltered following the modification processes. Color parameters show a strong increase in the L value (for whiteness) for the NaClO/UV treated samples. The modified starches demonstrate improved physicochemical properties which are suitable for several industrial applications including as stabilizers for frozen bakery products, whitening agents for paper products, and tableting agents for cosmetic and pharmaceuticals products. MenosStarch is an important raw material for industrial processes. Therefore, an investigation of new sources of starch and starch modification methods is necessary. The dual oxidation effect on the properties of the native pine seed starch is investigated. Native starch is extracted from pine seeds and its proximate composition determined. The starch is then subjected to a dual oxidation process in standard NaClO or H2O2 solutions (0.2; 0.5; 0.8 mol L1) and simultaneous exposure to ultraviolet light irradiation (UVC ? ¼ 254 nm). Thermogravimetric (TG-DTA) curves reveal enhanced stability to thermal degradation of the dual NaClO/UV process modified starch up to 20%. Differential scanning calorimetry (DSC) shows a strong decrease in gelatinization enthalpy due to the action of the UV-rays coupled with the sodium hypochlorite (NaClO) solution. The H2O2/UV modified starch has a high final viscosity while the NaClO/UV starch pastes have a low tendency to recrystallize. Furthermore, structural analysis using an X-ray diffractometer and scanning electron microscopy (SEM) show crystallinity patterns of type A starch and that the shape of the starch granules are unaltered following the modification processes. Color parameters show a strong increase in the L value (for whiteness) for the NaClO/UV treated samples. The modified starches demonstrate improved physicochemical properties which are suitable for several industrial applications including as stabilizers for frozen bakery products, ... Mostrar Tudo |
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Palavras-Chave: |
Chlorine compounds; Dual modification; Proximate compositions; Sodium hypochlorites; Ultraviolet light irradiation; X ray diffractometers. |
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Thesagro: |
Amido; Pinhão. |
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Thesaurus Nal: |
Differential scanning calorimetry; Functional properties; Gelation; Oxidation; Pasting properties; Physicochemical properties; Scanning electron microscopy. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02777naa a2200385 a 4500
001 2106821
005 2019-10-30
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1002/star.201800140$2DOI
100 1 $aHORNUNG, P. S.
245 $aNovel oxidized and UV-irradiated Araucaria angustifolia pine seed starch for enhanced functional properties.$h[electronic resource]
260 $c2019
520 $aStarch is an important raw material for industrial processes. Therefore, an investigation of new sources of starch and starch modification methods is necessary. The dual oxidation effect on the properties of the native pine seed starch is investigated. Native starch is extracted from pine seeds and its proximate composition determined. The starch is then subjected to a dual oxidation process in standard NaClO or H2O2 solutions (0.2; 0.5; 0.8 mol L1) and simultaneous exposure to ultraviolet light irradiation (UVC ? ¼ 254 nm). Thermogravimetric (TG-DTA) curves reveal enhanced stability to thermal degradation of the dual NaClO/UV process modified starch up to 20%. Differential scanning calorimetry (DSC) shows a strong decrease in gelatinization enthalpy due to the action of the UV-rays coupled with the sodium hypochlorite (NaClO) solution. The H2O2/UV modified starch has a high final viscosity while the NaClO/UV starch pastes have a low tendency to recrystallize. Furthermore, structural analysis using an X-ray diffractometer and scanning electron microscopy (SEM) show crystallinity patterns of type A starch and that the shape of the starch granules are unaltered following the modification processes. Color parameters show a strong increase in the L value (for whiteness) for the NaClO/UV treated samples. The modified starches demonstrate improved physicochemical properties which are suitable for several industrial applications including as stabilizers for frozen bakery products, whitening agents for paper products, and tableting agents for cosmetic and pharmaceuticals products.
650 $aDifferential scanning calorimetry
650 $aFunctional properties
650 $aGelation
650 $aOxidation
650 $aPasting properties
650 $aPhysicochemical properties
650 $aScanning electron microscopy
650 $aAmido
650 $aPinhão
653 $aChlorine compounds
653 $aDual modification
653 $aProximate compositions
653 $aSodium hypochlorites
653 $aUltraviolet light irradiation
653 $aX ray diffractometers
700 1 $aLAZZAROTTO, S. R. da S.
700 1 $aBELLETTINI, M. B.
700 1 $aLAZZAROTTO, M.
700 1 $aBETA, T.
700 1 $aRIBANI, R. H.
700 1 $aSCHNITZLER, E.
773 $tStarch$gv. 71, n. 3/4, 1800140, March 2019. 10 p.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Registros recuperados : 12 | |
| 1. |  | GHINI, R.; HAMADA, E.; OLIVEIRA, E.; NOGUEIRA, S. M. C. Efeito das mudanças climáticas sobre a favorabilidade à ferrugem comum do milho no Brasil. Summa Phytopathologica, Jaguariúna, v. 37, supplement, 2011. Edição dos resumos do 34 Congresso Paulista de Fitopatologia, Campinas, 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 5. | | BASSANEZI, R. B.; BELASQUE JR. J.; HAMADA, E.; GHINI, R.; NOGUEIRA, S. M. C. Efeito das mudanças climáticas sobre o cancro cítrico. Tropical Plant Pathology, Brasília, DF, v. 35, p. S130, ago. 2010. Suplemento, ref. 04.023. Edição dos resumos do XLIII Congresso Brasileiro de Fitopatologia, Cuiabá, ago. 2010.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 6. | | BASSANEZI, R. R.; BELASQUE JR. J.; HAMADA, E.; GHINI, R.; NOGUEIRA, S. M. C. Efeito das mudanças climáticas sobre doenças dos citros: estudo de caso do cancro cítrico. In: CONGRESSO PAULISTA DE FITOPATOLOGIA, 35., 2012, Jaguariúna. Anais... Summa Phytopathologica, Botucatu, v. 38, 2012. 1 CD ROM. 2 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 8. | | HAMADA, E.; OLIVEIRA, E. de; LANDAU, E. C.; NOGUEIRA, S. M. C.; GHINI, R. Impacto das mudanças climáticas sobre a distribuição geográfica das ferrugens do milho. In: BETTIOL, W.; HAMADA, E.; ANGELOTTI, F.; AUAD, A. M.; GHINI, R. (Ed.). Aquecimento global e problemas fitossanitários. Brasília, DF: Embrapa, 2017. p. 221-242.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Milho e Sorgo. |
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| 10. | | HAMADA, E.; ANGELOTTI, F.; GARRIDO, L. da R.; GHINI, R.; NOGUEIRA, S. M. C.; PEDRO JÚNIOR, M. J. Efeito das mudanças climáticas sobre a distribuição espacial da podridão amarga(Greeneria uvicola) da videira no Brasil. In: Summa Phytopathologica, v. 38, supl. resumo 099, 2012. Edição dos resumos do 35º Congresso Paulista de Fitopatologia, 2012, Jaguariúna.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Semiárido. |
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| 11. | | HAMADA, E.; MAIA, A. de H. N.; GHINI, R.; LANA, J. T. de O.; NOGUEIRA, S. M. C. Perfomance de modelos climáticos globais para o nordeste brasileiro: avaliação da precipitação pluviométrica. In: CONGRESO LATINOAMERICANO Y DEL CARIBE DE INGENIERÍA AGRICOLA, 9.; CONGRESSO BRASILEIRO DE ENGENHARIA AGRÍCOLA, 39., 2010, Vitória. A engenharia agrícola e o desenvolvimento das propriedades familiares. Vitória: SBEA, 2010. 1 CD-ROM. TC 0339-1 8 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 12. | | HAMADA, E.; ANGELOTTI, F.; GARRIDO, L. da R.; GHINI, R.; NOGUEIRA, S. M. C.; PEDRO JÚNIOR, M. J. Mapeamento da favorabilidade climática do míldio da videira (Plasmopora viticola) no Brasil. In: Summa Phytopathologica, v. 38, supl. resumo 035, 2012. Edição dos resumos do 35º Congresso Paulista de Fitopatologia, 2012, Jaguariúna.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Semiárido. |
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| Registros recuperados : 12 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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