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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
21/08/2003 |
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Data da última atualização: |
24/02/2010 |
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Autoria: |
CORRADINI, E.; CARVALHO, A. J. F. de; CURVELO, A. A. S.; MATTOSO, L. H. C. |
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Afiliação: |
Embrapa Instrumentação Agropecuária, São Carlos, SP. |
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Título: |
Preparation and characterization of starch and zein blends. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
In: MATTOSO, L. H. C.; LEÃO, A.; FROLLINI, E. (Ed.). Natural polymers and compósites IV. [São Carlos: EMBRAPA: USP; S.l.: UNESP, 2002]. 4 f. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
In this work blends of starch and zein, a hidrophobic corn protein, were prepared varying the content of zein from 0% to 80% and using glycerol as plasticizer. Blends were processed in a intensive batch mixer connected to a torque rheometer. The mixtures obtained were moded by compression at 160°C from which the specimens for mechanical test were prepared. The results show that the additon of zein improves the mixing process since it decreases the melting viscosity. Tensile strength presents small variation with addition of zein, while Young's Modulus increases and elongation decrease sharply. |
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Palavras-Chave: |
Blends; Natural polymers; Polímero natural; Tensile test. |
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Thesaurus Nal: |
starch; zein. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01309naa a2200229 a 4500
001 1028091
005 2010-02-24
008 2002 bl --- 0-- u #d
100 1 $aCORRADINI, E.
245 $aPreparation and characterization of starch and zein blends.
260 $c2002
520 $aIn this work blends of starch and zein, a hidrophobic corn protein, were prepared varying the content of zein from 0% to 80% and using glycerol as plasticizer. Blends were processed in a intensive batch mixer connected to a torque rheometer. The mixtures obtained were moded by compression at 160°C from which the specimens for mechanical test were prepared. The results show that the additon of zein improves the mixing process since it decreases the melting viscosity. Tensile strength presents small variation with addition of zein, while Young's Modulus increases and elongation decrease sharply.
650 $astarch
650 $azein
653 $aBlends
653 $aNatural polymers
653 $aPolímero natural
653 $aTensile test
700 1 $aCARVALHO, A. J. F. de
700 1 $aCURVELO, A. A. S.
700 1 $aMATTOSO, L. H. C.
773 $tIn: MATTOSO, L. H. C.; LEÃO, A.; FROLLINI, E. (Ed.). Natural polymers and compósites IV. [São Carlos: EMBRAPA: USP; S.l.: UNESP, 2002]. 4 f. 1 CD-ROM.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Pesca e Aquicultura; Embrapa Soja. |
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Data corrente: |
09/09/2021 |
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Data da última atualização: |
27/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CAMPOS, L. J. M.; ALMEIDA, R. E. M. de; SILVA, D. D. da; COTA, L. V.; NAOE, A. M. L.; PELUZIO, J. M.; BERNARDES, F. P.; COSTA, R. V. da. |
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Afiliação: |
LEONARDO JOSE MOTTA CAMPOS, CNPSO; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; DAGMA DIONISIA DA SILVA, CNPMS; LUCIANO VIANA COTA, CNPMS; Universidade Federal do Tocantins, Palmas, TO 77001-090, Brazil; Universidade Federal do Tocantins, Palmas, TO 77001-090, Brazil; Faculdade Católica do Tocantins, Unidade II, Palmas, TO 77000-000, Brazil; RODRIGO VERAS DA COSTA, CNPMS. |
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Título: |
Physiological and biophysical alterations in maize plants caused by Colletotrichum graminicola infection verified by OJIP study. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Tropical Plant Pathology, v. 46, p. 674-683, 2021. |
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DOI: |
10.1007/s40858-021-00465-x |
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Idioma: |
Inglês |
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Conteúdo: |
Anthracnose caused by Colletotrichum graminicola (Ces.) Wils is among the most aggressive maize diseases worldwide, considerably hindering crop productivity. To investigate the responses underlying the host-pathogen interaction involved in anthracnose infection, we conducted two feld experiments in some of the main grain producing areas of the State of Tocantins, in Brazil. Four maize hybrids (with diferential tolerance to C. graminicola) were sown in February and March, 2017. Chlorophyll fuorescence measures were performed according to the OJIP protocol; additionally, SPAD readings were conducted and productivity components were assessed. Inoculation with the fungus spore suspension afected the response curve of the chlorophyll fuorescence transient, SPAD index, and productivity components. Anthracnose stalk rot caused 20-25% reduction in grain weight, 6?8% reduction in maize ear size, and 20-23% reduction in ear weight. Furthermore, plants experiencing C. graminicola rot showed reduced SPAD index and a 24-34% reduction in the activity indicator of PSII (PITotal). These changes in the photosynthetic apparatus were successfully observed via chlorophyll fuorescence measurements. |
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Palavras-Chave: |
Fotossistema; Fuorescência da clorofila. |
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Thesagro: |
Antracnose; Colletotrichum Graminicola; Doença de Planta; Milho; Perda da Produção; Produtividade. |
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Thesaurus NAL: |
Anthracnose; Chlorophyll; Corn; Photosystem II. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal
H Saúde e Patologia
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/232916/1/ID-40408-Campos2021-Article-PhysiologicalAndBiophysicalAlt.pdf
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Marc: |
LEADER 02268naa a2200361 a 4500
001 2141301
005 2023-03-27
008 2021 bl uuuu u00u1 u #d
024 7 $a10.1007/s40858-021-00465-x$2DOI
100 1 $aCAMPOS, L. J. M.
245 $aPhysiological and biophysical alterations in maize plants caused by Colletotrichum graminicola infection verified by OJIP study.$h[electronic resource]
260 $c2021
520 $aAnthracnose caused by Colletotrichum graminicola (Ces.) Wils is among the most aggressive maize diseases worldwide, considerably hindering crop productivity. To investigate the responses underlying the host-pathogen interaction involved in anthracnose infection, we conducted two feld experiments in some of the main grain producing areas of the State of Tocantins, in Brazil. Four maize hybrids (with diferential tolerance to C. graminicola) were sown in February and March, 2017. Chlorophyll fuorescence measures were performed according to the OJIP protocol; additionally, SPAD readings were conducted and productivity components were assessed. Inoculation with the fungus spore suspension afected the response curve of the chlorophyll fuorescence transient, SPAD index, and productivity components. Anthracnose stalk rot caused 20-25% reduction in grain weight, 6?8% reduction in maize ear size, and 20-23% reduction in ear weight. Furthermore, plants experiencing C. graminicola rot showed reduced SPAD index and a 24-34% reduction in the activity indicator of PSII (PITotal). These changes in the photosynthetic apparatus were successfully observed via chlorophyll fuorescence measurements.
650 $aAnthracnose
650 $aChlorophyll
650 $aCorn
650 $aPhotosystem II
650 $aAntracnose
650 $aColletotrichum Graminicola
650 $aDoença de Planta
650 $aMilho
650 $aPerda da Produção
650 $aProdutividade
653 $aFotossistema
653 $aFuorescência da clorofila
700 1 $aALMEIDA, R. E. M. de
700 1 $aSILVA, D. D. da
700 1 $aCOTA, L. V.
700 1 $aNAOE, A. M. L.
700 1 $aPELUZIO, J. M.
700 1 $aBERNARDES, F. P.
700 1 $aCOSTA, R. V. da
773 $tTropical Plant Pathology$gv. 46, p. 674-683, 2021.
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Embrapa Soja (CNPSO) |
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