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| Registros recuperados : 23 | |
| 11. |  | 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.| Biblioteca(s): Embrapa Florestas. |
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| 13. | | SIQUEIRA, G. L. de A. de; LAZZAROTTO, S. R. da S.; HORNUNG, P. S.; LOURENÇON, T. V.; SILVEIRA, A. C. da; SCHNITZLER, E.; LAZZAROTTO, M. Effect of acid alcoholic solution in waxy maize starch treatment. In: CONGRESSO BRASILEIRO DE ANÁLISE TÉRMICA E CALORIMETRIA, 10.; CONGRESSO PAN AMERICANO DE ANÁLISE TÉRMICA E CALORIMETRIA, 4., 2016, São Paulo. Trabalhos. [S.l.]: ABRATEC, 2016. 4 p. Disponível online.| Biblioteca(s): Embrapa Florestas. |
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| 14. | | LAZZAROTTO, S. R. da S.; HORNUNG, P. S.; SIQUEIRA, G. L. de A. de; SILVEIRA, A. C. da; SCHNITZLER, E.; LAZZAROTTO, M. Effect of the KMnO4 treatment on the "pinhão" starch. In: CONGRESSO BRASILEIRO DE ANÁLISE TÉRMICA E CALORIMETRIA, 10.; CONGRESSO PAN AMERICANO DE ANÁLISE TÉRMICA E CALORIMETRIA, 4., 2016, São Paulo. Trabalhos. [S.l.]: ABRATEC, 2016. 4 p. Disponível online.| Biblioteca(s): Embrapa Florestas. |
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| 15. | | SIQUEIRA, G. L. de A. de; SILVEIRA, A. C. da; LAZZAROTTO, S. R. da S.; GODOY, R. C. B. de; SCHNITZLER, E.; LAZZAROTTO, M. Hydrolysis of the low gelatinization temperature Araucaria angustifolia pine seed starch. Journal of Thermal Analysis and Calorimetry, v. 138, n. 2, p. 1269-1278, Oct. 2019.| Biblioteca(s): Embrapa Florestas. |
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| 16. | | SIQUEIRA, G. L. de A. de; HORNUNG, P. S.; SILVEIRA, A. C. da; LAZZAROTTO, S. R. da S.; CORDOBA, L. do P.; SCHNITZLER, E.; LAZZAROTTO, M. Impact of treatment with HCL/alcoholic in the modification of corn starch. Journal of Thermal Analysis and Calorimetry, v. 129, n. 3, p. 1705-1713, Dec. 2017.| Biblioteca(s): Embrapa Florestas. |
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| 17. | | SILVEIRA, A. C. da; SIQUEIRA, G. L. de A. de; MAYER, F. M.; MIGUEL, O. G.; ZINI, C. A.; LAZZAROTTO, M. Estudo da Composição dos Óleos Essenciais de três Genótipos de Eucalyptus spp. In: SEMANA DE APERFEIÇOAMENTO EM ENGENHARIA FLORESTAL DA UFPR, 2., 2018, Curitiba. Anais. Curitiba: CIFLOMA, 2018. 4 p.| Biblioteca(s): Embrapa Florestas. |
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| 18. | | SIQUEIRA, G. L. de A. de; LAZZAROTTU, S. R. da S.; HORNUNG, P. S.; SILVEIRA, A. C. da; BANNACH, G.; SCHNITZLER, E.; LAZZAROTTO, M. Evaluation of double treated starches using thermal tools. In: CONGRESSO BRASILEIRO DE ANÁLISE TÉRMICA E CALORIMETRIA, 10.; CONGRESSO PAN AMERICANO DE ANÁLISE TÉRMICA E CALORIMETRIA, 4., 2016, São Paulo. Trabalhos. [S.l.]: ABRATEC, 2016. 4 p. Disponível online.| Biblioteca(s): Embrapa Florestas. |
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| 19. | | LAZZAROTTO, S. R. da S.; SCHERRUTH, M. S. de F.; CALIXTO, P. S.; CARRARO, M. de M.; SILVEIRA, A. C. da; LAZZAROTTO, M. Método de Folin Ciocalteau adaptado para quantificar polifenóis em extratos de erva-mate. Movimenta, v. 13, n. 3, p. 419-426, 2020.| Biblioteca(s): Embrapa Florestas. |
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| 20. | | HORNUNG, P. S.; SILVEIRA, A. C. da; LAZZAROTTO, S. R. da S.; SIQUEIRA, G. L. de A. de; SCHNITZLER, E.; RIBANI, R. H.; LAZZAROTTO, M. Thermogravimetric alterations of cassava starch granules induced by hydrogen peroxide, UV rays and microwave. In: CONGRESSO BRASILEIRO DE ANÁLISE TÉRMICA E CALORIMETRIA, 10.; CONGRESSO PAN AMERICANO DE ANÁLISE TÉRMICA E CALORIMETRIA, 4., 2016, São Paulo. Trabalhos. [S.l.]: ABRATEC, 2016. 4 p. Disponível online.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 23 | |
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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: |
12/09/2019 |
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Data da última atualização: |
10/12/2019 |
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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: |
SIQUEIRA, G. L. de A. de; SILVEIRA, A. C. da; LAZZAROTTO, S. R. da S.; GODOY, R. C. B. de; SCHNITZLER, E.; LAZZAROTTO, M. |
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Afiliação: |
Geisa Liandra de Andrade de Siqueira, Mestranda da UEPG; Ana Claudia da Silveira, UFPR; Simone Rosa da Silveira Lazzarotto, Doutoranda da UEPG; ROSSANA CATIE BUENO DE GODOY, CNPF; Egon Schnitzler, UEPG; MARCELO LAZZAROTTO, CNPF. |
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Título: |
Hydrolysis of the low gelatinization temperature Araucaria angustifolia pine seed starch. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Thermal Analysis and Calorimetry, v. 138, n. 2, p. 1269-1278, Oct. 2019. |
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DOI: |
10.1007/s10973-019-08180-1 |
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Idioma: |
Inglês |
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Conteúdo: |
Starch is the most abundant carbohydrate found in grains, roots and tubers. Modified starches are employed to overcome most of native starch limitations in industrial applications. Pinhão is the seed of Araucaria angustifolia and starch is approximately 36% of its composition. Acid hydrolysis changes the starch physicochemical properties without impairing the granular structure. The native and hydrochloric acid- modified (0.1 and 0.5 mol L−1) pinhão starches were investigated using thermal (TG-DTA and DSC), rheological (RVA), structural (XRD and SEM) and statistical analysis (ANOVA and Tukey). The aim of this study was to evaluate the effects of acid modification of pinhão starches in aqueous solutions. The starches were chosen because of their low gelatinization temperature (below 60 °C). TG-DTA results in air atmosphere showed that treated samples presented higher thermal stability. The same analysis using nitrogen atmosphere showed similarities between the samples. DSC results indicate that highest acid concentrations promoted crystallinity reduction and losses in the internal structure of the granule. The genetic sources demonstrated different behaviors. The viscosity parameters decreased with the intensity of acid treatment. The XRD identified the type C pattern for the starches and the relative crystallinity increased according to the intensity of the acid hydrolysis. Superficial changes in the granules were observed by SEM. Therefore, modified pinhão starch has potential use for industrial applications. Further studies are necessary to extend these applications. MenosStarch is the most abundant carbohydrate found in grains, roots and tubers. Modified starches are employed to overcome most of native starch limitations in industrial applications. Pinhão is the seed of Araucaria angustifolia and starch is approximately 36% of its composition. Acid hydrolysis changes the starch physicochemical properties without impairing the granular structure. The native and hydrochloric acid- modified (0.1 and 0.5 mol L−1) pinhão starches were investigated using thermal (TG-DTA and DSC), rheological (RVA), structural (XRD and SEM) and statistical analysis (ANOVA and Tukey). The aim of this study was to evaluate the effects of acid modification of pinhão starches in aqueous solutions. The starches were chosen because of their low gelatinization temperature (below 60 °C). TG-DTA results in air atmosphere showed that treated samples presented higher thermal stability. The same analysis using nitrogen atmosphere showed similarities between the samples. DSC results indicate that highest acid concentrations promoted crystallinity reduction and losses in the internal structure of the granule. The genetic sources demonstrated different behaviors. The viscosity parameters decreased with the intensity of acid treatment. The XRD identified the type C pattern for the starches and the relative crystallinity increased according to the intensity of the acid hydrolysis. Superficial changes in the granules were observed by SEM. Therefore, modified pinhão starch has ... Mostrar Tudo |
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Palavras-Chave: |
Amido de pinhão modificado; DSC; Modified pinhão starch; RVA; Starch structural evaluation; TG-DTA. |
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Thesaurus NAL: |
Thermal analysis. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02481naa a2200277 a 4500
001 2112143
005 2019-12-10
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1007/s10973-019-08180-1$2DOI
100 1 $aSIQUEIRA, G. L. de A. de
245 $aHydrolysis of the low gelatinization temperature Araucaria angustifolia pine seed starch.$h[electronic resource]
260 $c2019
520 $aStarch is the most abundant carbohydrate found in grains, roots and tubers. Modified starches are employed to overcome most of native starch limitations in industrial applications. Pinhão is the seed of Araucaria angustifolia and starch is approximately 36% of its composition. Acid hydrolysis changes the starch physicochemical properties without impairing the granular structure. The native and hydrochloric acid- modified (0.1 and 0.5 mol L−1) pinhão starches were investigated using thermal (TG-DTA and DSC), rheological (RVA), structural (XRD and SEM) and statistical analysis (ANOVA and Tukey). The aim of this study was to evaluate the effects of acid modification of pinhão starches in aqueous solutions. The starches were chosen because of their low gelatinization temperature (below 60 °C). TG-DTA results in air atmosphere showed that treated samples presented higher thermal stability. The same analysis using nitrogen atmosphere showed similarities between the samples. DSC results indicate that highest acid concentrations promoted crystallinity reduction and losses in the internal structure of the granule. The genetic sources demonstrated different behaviors. The viscosity parameters decreased with the intensity of acid treatment. The XRD identified the type C pattern for the starches and the relative crystallinity increased according to the intensity of the acid hydrolysis. Superficial changes in the granules were observed by SEM. Therefore, modified pinhão starch has potential use for industrial applications. Further studies are necessary to extend these applications.
650 $aThermal analysis
653 $aAmido de pinhão modificado
653 $aDSC
653 $aModified pinhão starch
653 $aRVA
653 $aStarch structural evaluation
653 $aTG-DTA
700 1 $aSILVEIRA, A. C. da
700 1 $aLAZZAROTTO, S. R. da S.
700 1 $aGODOY, R. C. B. de
700 1 $aSCHNITZLER, E.
700 1 $aLAZZAROTTO, M.
773 $tJournal of Thermal Analysis and Calorimetry$gv. 138, n. 2, p. 1269-1278, Oct. 2019.
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