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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido; Embrapa Uva e Vinho. |
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Data corrente: |
19/12/2011 |
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Data da última atualização: |
26/12/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
OLIVEIRA, E. A. de; PEREIRA, C. A.; GAVA, C. A. T.; PEREIRA, G. E. |
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Afiliação: |
EUDBERG ALVES DE OLIVEIRA; CARLIANA ARAÚJO PEREIRA; CARLOS ALBERTO TUAO GAVA, CPATSA; GIULIANO ELIAS PEREIRA, CNPUV / CPATSA. |
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Título: |
Resistance of contaminant yeasts and impacts of different antioxidant concentrations on analytical characteristics of Brazilian tropical wines. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: CONGRESO LATINOAMERICANO DE VITICULTURA Y ENOLOGIA, 13., 2011, Santiago do Chile. Sustentabilidad y cambio climático: impacto para la industria vitivinícola. Santiago: Asociación Nacional de Ingenieros Agrónomos Enólogos de Chile, 2011. |
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Páginas: |
Não paginado. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
Yeast contaminants in wines can cause refermentation and formation of defect compounds, occurring lost of flavor quality and deterioration. This study aimed to determine the resistance of wild yeasts in tropical wines under different concentrations of potassium metabisulphite and sorbate used as antioxidants. Aliquots of 1 ml of wines were added to 9 ml Broth Tryptone Glucose Yeast Extract containing concentrations of the antioxidants potassium metabisulphite (90, 100, 110, 120 mg.L-1) and potassium sorbate (200, 250, 275, 280 mg.L-1) according to the ceiling recommended for wines. Yeast extracts were placed in Durhan tubes and incubated at 30 °C for 72 hours and then read on a fluorescence microscope, NucleoCounter ® YC-100TM to determine the cells still viable. The results were expressed in the form of the mortality curve of yeast cells. The concentrations of antioxidants that inhibited successfully the development of the contaminant yeasts were used in microvinifications to determine the impact on the phenolic compounds in the wines and results are discussed. |
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Palavras-Chave: |
Brasil; Levedura; Região Nordeste; Vale do São Francisco; Vinho tropical; Wine. |
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Thesagro: |
Análise química; Antioxidante; Contaminação; Enologia; Fermentação; Microbiologia; Resistência; Uva; Vinho. |
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Thesaurus Nal: |
Grapes. |
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Categoria do assunto: |
--
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/143147/1/1.M.P.Resistenciadelevadurascontaminantesysuimpactoendiferentesconcentracionesdeantioxidantes..pdf
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Marc: |
LEADER 02255nam a2200349 a 4500
001 1912781
005 2023-12-26
008 2011 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, E. A. de
245 $aResistance of contaminant yeasts and impacts of different antioxidant concentrations on analytical characteristics of Brazilian tropical wines.
260 $aIn: CONGRESO LATINOAMERICANO DE VITICULTURA Y ENOLOGIA, 13., 2011, Santiago do Chile. Sustentabilidad y cambio climático: impacto para la industria vitivinícola. Santiago: Asociación Nacional de Ingenieros Agrónomos Enólogos de Chile$c2011
300 $aNão paginado.$c1 CD-ROM.
520 $aYeast contaminants in wines can cause refermentation and formation of defect compounds, occurring lost of flavor quality and deterioration. This study aimed to determine the resistance of wild yeasts in tropical wines under different concentrations of potassium metabisulphite and sorbate used as antioxidants. Aliquots of 1 ml of wines were added to 9 ml Broth Tryptone Glucose Yeast Extract containing concentrations of the antioxidants potassium metabisulphite (90, 100, 110, 120 mg.L-1) and potassium sorbate (200, 250, 275, 280 mg.L-1) according to the ceiling recommended for wines. Yeast extracts were placed in Durhan tubes and incubated at 30 °C for 72 hours and then read on a fluorescence microscope, NucleoCounter ® YC-100TM to determine the cells still viable. The results were expressed in the form of the mortality curve of yeast cells. The concentrations of antioxidants that inhibited successfully the development of the contaminant yeasts were used in microvinifications to determine the impact on the phenolic compounds in the wines and results are discussed.
650 $aGrapes
650 $aAnálise química
650 $aAntioxidante
650 $aContaminação
650 $aEnologia
650 $aFermentação
650 $aMicrobiologia
650 $aResistência
650 $aUva
650 $aVinho
653 $aBrasil
653 $aLevedura
653 $aRegião Nordeste
653 $aVale do São Francisco
653 $aVinho tropical
653 $aWine
700 1 $aPEREIRA, C. A.
700 1 $aGAVA, C. A. T.
700 1 $aPEREIRA, G. E.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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