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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
03/11/2016 |
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Data da última atualização: |
11/07/2017 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
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. |
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Afiliação: |
Polyanna Silveira Hornung, UFPR; Ana Claudia da Silveira, UFPR; Simone Rosa da Silveira Lazzarotto, Doutoranda da UEPG; Geisa Liandra de Andrade de Siqueira, Doutoranda da UEPG; Egon Schnitzler, UEPG; Rosemary Hoffmann Ribani, UFPR; MARCELO LAZZAROTTO, CNPF. |
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Título: |
Thermogravimetric alterations of cassava starch granules induced by hydrogen peroxide, UV rays and microwave. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
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. |
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Páginas: |
4 p. |
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Descrição Física: |
Disponível online. |
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Idioma: |
Inglês |
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Conteúdo: |
Starches are applied in several fields of industry. Amylose and amylopectin (natural polymers) constitute the starch in vegetable cells. In some processes native starches cannot support high stress conditions (high temperatures/acidity). Then, modification methods are developed aiming the improving of starch technological utilization. Oxidative modification with H2O2 has been the subject of many researches. UV rays as well microwave irradiation can be used. The aim was to confirm possible thermogravimetric alterations in native cassava starch (A) granules due to a double starch modification: 1st step) H2O2 standard solutions 0.1 mol L-1 (B), 0.2 mol L-1 (C) and 0.3 mol L-1 (D) and UV rays exposure for 1h; 2nd step) microwave irradiation for 5 min. The results of thermogravimetric curves (TG-DTA) show that the behaviors of the starch proprieties were modified. Highlighting, the modified samples C and D showed a decrease on the thermal stability step. This alteration turned them suitable to many field of industry like the paper one. |
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Palavras-Chave: |
Active oxygen; Environment-friendly reagent. |
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Thesagro: |
Amido; Mandioca. |
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Thesaurus Nal: |
Cassava; Starch. |
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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/149549/1/2016-MarceloL-CBATC-Thermogravimetric.pdf
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Marc: |
LEADER 01983nam a2200265 a 4500
001 2055836
005 2017-07-11
008 2016 bl uuuu u00u1 u #d
100 1 $aHORNUNG, P. S.
245 $aThermogravimetric alterations of cassava starch granules induced by hydrogen peroxide, UV rays and microwave.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE ANÁLISE TÉRMICA E CALORIMETRIA, 10.; CONGRESSO PAN AMERICANO DE ANÁLISE TÉRMICA E CALORIMETRIA, 4., 2016, São Paulo. Trabalhos. [S.l.]: ABRATEC$c2016
300 $a4 p.$cDisponível online.
520 $aStarches are applied in several fields of industry. Amylose and amylopectin (natural polymers) constitute the starch in vegetable cells. In some processes native starches cannot support high stress conditions (high temperatures/acidity). Then, modification methods are developed aiming the improving of starch technological utilization. Oxidative modification with H2O2 has been the subject of many researches. UV rays as well microwave irradiation can be used. The aim was to confirm possible thermogravimetric alterations in native cassava starch (A) granules due to a double starch modification: 1st step) H2O2 standard solutions 0.1 mol L-1 (B), 0.2 mol L-1 (C) and 0.3 mol L-1 (D) and UV rays exposure for 1h; 2nd step) microwave irradiation for 5 min. The results of thermogravimetric curves (TG-DTA) show that the behaviors of the starch proprieties were modified. Highlighting, the modified samples C and D showed a decrease on the thermal stability step. This alteration turned them suitable to many field of industry like the paper one.
650 $aCassava
650 $aStarch
650 $aAmido
650 $aMandioca
653 $aActive oxygen
653 $aEnvironment-friendly reagent
700 1 $aSILVEIRA, A. C. da
700 1 $aLAZZAROTTO, S. R. da S.
700 1 $aSIQUEIRA, G. L. de A. de
700 1 $aSCHNITZLER, E.
700 1 $aRIBANI, R. H.
700 1 $aLAZZAROTTO, M.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
14/02/2005 |
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Data da última atualização: |
17/07/2019 |
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Autoria: |
GONCALVES, P. de S. |
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Afiliação: |
PAULO DE SOUZA GONCALVES, CNPSD. |
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Título: |
Report on present status of Hevea germplasm in Brazil collected in 1981 IRRDB expedition, 18 June, Brasilia-Brazil. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Manaus: EMBRAPA-CNPSD, 1982. |
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Páginas: |
15 p. |
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Idioma: |
Inglês |
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Conteúdo: |
This report presents, details of the grafted germplasm at CNPSD, as to inform the situation of this material and the availability of the material for dispatching to the Intermediate Quarentine Nursery in Guadaloupe. |
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Palavras-Chave: |
Banco; Brasil. |
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Thesagro: |
Germoplasma; Hevea; Seringueira. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/199632/1/REPORT-ON-PRESENT-STATUS-OF-HEVEA....pdf
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Marc: |
LEADER 00711nam a2200181 a 4500
001 1674824
005 2019-07-17
008 1982 bl uuuu t 00u1 u #d
100 1 $aGONCALVES, P. de S.
245 $aReport on present status of Hevea germplasm in Brazil collected in 1981 IRRDB expedition, 18 June, Brasilia-Brazil.
260 $aManaus: EMBRAPA-CNPSD$c1982
300 $a15 p.
520 $aThis report presents, details of the grafted germplasm at CNPSD, as to inform the situation of this material and the availability of the material for dispatching to the Intermediate Quarentine Nursery in Guadaloupe.
650 $aGermoplasma
650 $aHevea
650 $aSeringueira
653 $aBanco
653 $aBrasil
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Registro original: |
Embrapa Amazônia Ocidental (CPAA) |
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