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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
18/11/2014 |
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Data da última atualização: |
18/11/2014 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
HORNUNG, P. S.; GRANZA, A. G.; LAZZAROTTO, S. R. da R.; RIBANI, R. H.; LAZZAROTTO, M.; SCHNITZLER, E. |
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Afiliação: |
Polyanna Silveira Hornung, UFPR; Andressa Gabardo Granza, UEPG; Simone Rosa da Silveira Lazzarotto, UEPG; Rosemary Hoffmann Ribani, UFPR; MARCELO LAZZAROTTO, CNPF; Egon Schnitzler, UEPG. |
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Título: |
Thermal and rheological behavior of native and modified starch Araucaria angustifolia (pinhão). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ANÁLISE TÉRMICA E CALORIMETRIA, 9., 2014, Serra Negra. Trabalhos. [S.l.]: ABRATEC, 2014. |
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Páginas: |
6 p. |
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Descrição Física: |
Disponibilizado online. |
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Idioma: |
Inglês |
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Notas: |
CBRATEC. |
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Conteúdo: |
Araucaria angustifolia is known in Brazil as Paraná Pine is endangered due to reckless extraction. The preservation and maintenance of the culture could be stimulated by use derivative products like the starch from its seeds (pinhão). In this work were studied samples of unmodified and modified pinhão starch. The hydrogen peroxide (H2O2) were used in the concentrations 0.1, 0.2 and 0.3 mol.L-1 (a, b, c) and simultaneously exposed in ultraviolet rays (λ = 256 nm) for one hour. One sample (N) was maintained as received for comparisons of the analysis results. The samples were analyzed by the thermoanalytical techniques: thermogravimetry and differential thermal analysis (TG-DTA) and differential scanning calorimetry (DSC); and by the rheological analysis: Rapid Viscoamylographic Analysis (RVA). The TGA showed an increase on the stability values form the (N) sample to the modified ones. The DSC showed a strong decrease on the gelatinization enthalpy with increasing of the H2O2 concentrations solutions valued for the modified samples. The RVA results presented that the Setback reduced with the treatment that used hydrogen peroxide in a higher concentration. The obtained results showed that the modification method applied altered the thermal behavior of the pinhão starch. |
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Palavras-Chave: |
Amido modificado; DSC; Peróxido de hidrogênio; Ultraviolet rays. |
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Thesagro: |
Araucária Angustifólia; Espécie Nativa; Raio Ultravioleta. |
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Thesaurus Nal: |
hydrogen peroxide; modified starch. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/111819/1/2014-MarceloL-CBATC-ThermalRheological.pdf
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Marc: |
LEADER 02269nam a2200301 a 4500
001 2000387
005 2014-11-18
008 2014 bl uuuu u00u1 u #d
100 1 $aHORNUNG, P. S.
245 $aThermal and rheological behavior of native and modified starch Araucaria angustifolia (pinhão).$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE ANÁLISE TÉRMICA E CALORIMETRIA, 9., 2014, Serra Negra. Trabalhos. [S.l.]: ABRATEC$c2014
300 $a6 p.$cDisponibilizado online.
500 $aCBRATEC.
520 $aAraucaria angustifolia is known in Brazil as Paraná Pine is endangered due to reckless extraction. The preservation and maintenance of the culture could be stimulated by use derivative products like the starch from its seeds (pinhão). In this work were studied samples of unmodified and modified pinhão starch. The hydrogen peroxide (H2O2) were used in the concentrations 0.1, 0.2 and 0.3 mol.L-1 (a, b, c) and simultaneously exposed in ultraviolet rays (λ = 256 nm) for one hour. One sample (N) was maintained as received for comparisons of the analysis results. The samples were analyzed by the thermoanalytical techniques: thermogravimetry and differential thermal analysis (TG-DTA) and differential scanning calorimetry (DSC); and by the rheological analysis: Rapid Viscoamylographic Analysis (RVA). The TGA showed an increase on the stability values form the (N) sample to the modified ones. The DSC showed a strong decrease on the gelatinization enthalpy with increasing of the H2O2 concentrations solutions valued for the modified samples. The RVA results presented that the Setback reduced with the treatment that used hydrogen peroxide in a higher concentration. The obtained results showed that the modification method applied altered the thermal behavior of the pinhão starch.
650 $ahydrogen peroxide
650 $amodified starch
650 $aAraucária Angustifólia
650 $aEspécie Nativa
650 $aRaio Ultravioleta
653 $aAmido modificado
653 $aDSC
653 $aPeróxido de hidrogênio
653 $aUltraviolet rays
700 1 $aGRANZA, A. G.
700 1 $aLAZZAROTTO, S. R. da R.
700 1 $aRIBANI, R. H.
700 1 $aLAZZAROTTO, M.
700 1 $aSCHNITZLER, E.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
12/05/2020 |
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Data da última atualização: |
12/05/2020 |
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Autoria: |
DIAS FILHO, M. B.; SIMÃO NETO, M.; SERRÃO, E. A. S. |
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Afiliação: |
MOACYR BERNARDINO DIAS FILHO, CPATU; Miguel Simão Neto, CPATU; Emanuel A. S. Serrão, CPATU. |
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Título: |
Cluster analysis for assessing the agronomic adaptation of Panicum maximum Jacq. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 29, n. 10, p. 1508-1516, set. 1994. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Análise de agrupamento na avaliação da adaptação agronômica de acesso de Panicum maximum Jacq. |
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Conteúdo: |
Cluster analysis techniques were conducted using the degree of agronomic adaptation - an integrated measure of susceptibility to diseases and insects, growth of vigor, recovery from simulated herbivority, soil cover, and potential for dry matter production - of 118 accessions of the forage grass Panicum maximum jacq., evaluated during a two-year period, in eastern Brazilian Amazonia. The objective was to determine the feasibility of clustering procedures to classify the studied accessions according to their agronomic adaptation. Hierarchical (complete linkage) cluster and nonhierarchical (k-means) cluster analysis were found to be suitable statistical tools for assigning accessions to discrete groups. The 118 P. maximum accessions were classified into four distinct clusters of 21, 40, 41, and 16 accessions with, respectively, excellent, good, regular, and poor degree of agronomic adaptation. |
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Palavras-Chave: |
Análise multivariada. |
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Thesagro: |
Análise Estatística; Gramínea Forrageira. |
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Thesaurus NAL: |
Amazonia; Multivariate analysis; Statistical analysis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/212926/1/Cluster-analysis-for-assessing-the-agronomic.pdf
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Marc: |
LEADER 01719naa a2200229 a 4500
001 2122262
005 2020-05-12
008 1994 bl uuuu u00u1 u #d
100 1 $aDIAS FILHO, M. B.
245 $aCluster analysis for assessing the agronomic adaptation of Panicum maximum Jacq.
260 $c1994
500 $aTítulo em português: Análise de agrupamento na avaliação da adaptação agronômica de acesso de Panicum maximum Jacq.
520 $aCluster analysis techniques were conducted using the degree of agronomic adaptation - an integrated measure of susceptibility to diseases and insects, growth of vigor, recovery from simulated herbivority, soil cover, and potential for dry matter production - of 118 accessions of the forage grass Panicum maximum jacq., evaluated during a two-year period, in eastern Brazilian Amazonia. The objective was to determine the feasibility of clustering procedures to classify the studied accessions according to their agronomic adaptation. Hierarchical (complete linkage) cluster and nonhierarchical (k-means) cluster analysis were found to be suitable statistical tools for assigning accessions to discrete groups. The 118 P. maximum accessions were classified into four distinct clusters of 21, 40, 41, and 16 accessions with, respectively, excellent, good, regular, and poor degree of agronomic adaptation.
650 $aAmazonia
650 $aMultivariate analysis
650 $aStatistical analysis
650 $aAnálise Estatística
650 $aGramínea Forrageira
653 $aAnálise multivariada
700 1 $aSIMÃO NETO, M.
700 1 $aSERRÃO, E. A. S.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 29, n. 10, p. 1508-1516, set. 1994.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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