| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
07/10/1992 |
|
Data da última atualização: |
07/10/1992 |
|
Autoria: |
SIMS, C. A.; BATES, R. P.; MORTENSEN, J. A. |
|
Afiliação: |
Food Science and Human Nutrition Department, University of Florida, Gainesville, FL 32611. |
|
Título: |
Effects of must polyphenoloxidase activity and timing of sulfite addition on the color and quality of Vitis rotundifolia and Euvitis hybrid white wines. |
|
Ano de publicação: |
1990 |
|
Fonte/Imprenta: |
American Journal of Enology and Viticulture, v.42, n.2, p.128-132, 1990. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The effects of initial polyphenoloxidase activity (PPO) in the must and timing of the initial sulfite addition on the color of a white Euvitis hybrid wine and a white Vitis rotundifolia wine were evaluated. The non-sulfited Euvitis juice had high PPO and browned extensively if sulfite was not added at crush. However, delaying sulfite addition until after cold sttling (before fermentation) or after fermentation reduced total phenolics and produced wines with vbetter color as compared to addition of sulfite at crush, but did not significantly effect overall sensory quality. The same wine treatments with limited or no PPO activity in the must (inactivated by temporary low pH) generally browned to a greater extent than the same wines with full PPO acitivity. In contrast, the Vitis rotundifolia juice was very light due to a lack of indigenous PPO. Sulfite additions after cold settiling or fermentation reduced total phenolics and were as effective as a sulfite addition at crush in preserving wine color. V. rotundifolia wine produced by delaying sulfite addition until after fermentation was sifnicantly different in sensory quality (less astringent) than the sulfite-at-crush wine. |
|
Palavras-Chave: |
Phenolics compounds; Polyphenoloxidase. |
|
Thesagro: |
Composto Fenólico; Polifenoloxidase. |
|
Thesaurus Nal: |
sulfites; white wines. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01890naa a2200217 a 4500
001 1458208
005 1992-10-07
008 1990 bl --- 0-- u #d
100 1 $aSIMS, C. A.
245 $aEffects of must polyphenoloxidase activity and timing of sulfite addition on the color and quality of Vitis rotundifolia and Euvitis hybrid white wines.
260 $c1990
520 $aThe effects of initial polyphenoloxidase activity (PPO) in the must and timing of the initial sulfite addition on the color of a white Euvitis hybrid wine and a white Vitis rotundifolia wine were evaluated. The non-sulfited Euvitis juice had high PPO and browned extensively if sulfite was not added at crush. However, delaying sulfite addition until after cold sttling (before fermentation) or after fermentation reduced total phenolics and produced wines with vbetter color as compared to addition of sulfite at crush, but did not significantly effect overall sensory quality. The same wine treatments with limited or no PPO activity in the must (inactivated by temporary low pH) generally browned to a greater extent than the same wines with full PPO acitivity. In contrast, the Vitis rotundifolia juice was very light due to a lack of indigenous PPO. Sulfite additions after cold settiling or fermentation reduced total phenolics and were as effective as a sulfite addition at crush in preserving wine color. V. rotundifolia wine produced by delaying sulfite addition until after fermentation was sifnicantly different in sensory quality (less astringent) than the sulfite-at-crush wine.
650 $asulfites
650 $awhite wines
650 $aComposto Fenólico
650 $aPolifenoloxidase
653 $aPhenolics compounds
653 $aPolyphenoloxidase
700 1 $aBATES, R. P.
700 1 $aMORTENSEN, J. A.
773 $tAmerican Journal of Enology and Viticulture$gv.42, n.2, p.128-132, 1990.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Gado de Corte. |
|
Data corrente: |
19/12/2013 |
|
Data da última atualização: |
19/12/2013 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
C - 0 |
|
Autoria: |
FIGUEIREDO, U. J. de; NUNES, J. A. R.; VALLE, C. B. do; BARRIOS, S. C. L.; ALVES, G. F. |
|
Afiliação: |
ULISSES JOSÉ DE FIGUEIREDO, Mestrando em Genética e Melhoramento de Plantas, DBI/ UFLA; JOSÉ AIRTON RODRIGUES NUNES, UFLA; CACILDA BORGES DO VALLE, CNPGC; SANZIO CARVALHO LIMA BARRIOS, CNPGC; GEOVANI FERREIRA ALVES, Bolsista CNPGC. |
|
Título: |
Effects of season and year of evaluation in the selection of Brachiaria humidicola hybrids. |
|
Ano de publicação: |
2013 |
|
Fonte/Imprenta: |
Tropical Grasslands - Forrajes Tropicales, v. 1, p. 76-77, 2013. |
|
Idioma: |
Português |
|
Palavras-Chave: |
Environmental effects; Genotype by environment interaction; Tropical grasses. |
|
Thesaurus NAL: |
nutritive value. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/94352/1/Figueiredo-et-al.-748.pdf
|
|
Marc: |
LEADER 00674naa a2200205 a 4500
001 1974443
005 2013-12-19
008 2013 bl uuuu u00u1 u #d
100 1 $aFIGUEIREDO, U. J. de
245 $aEffects of season and year of evaluation in the selection of Brachiaria humidicola hybrids.$h[electronic resource]
260 $c2013
650 $anutritive value
653 $aEnvironmental effects
653 $aGenotype by environment interaction
653 $aTropical grasses
700 1 $aNUNES, J. A. R.
700 1 $aVALLE, C. B. do
700 1 $aBARRIOS, S. C. L.
700 1 $aALVES, G. F.
773 $tTropical Grasslands - Forrajes Tropicales$gv. 1, p. 76-77, 2013.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Corte (CNPGC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
