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| Falcão,Leila D; Chaves,Eduardo S; Burin,Vivian M; Falcão,Ana Paula; Gris,Eliana F; Bonin,Valdir; Bordignon-Luiz,Marilde T. |
| The wine grape (Vitis vinifera) cv. Cabernet Sauvignon has recently been introduced at a 1160 m altitude in the São Joaquim área (Santa Catarina State, Southern Brazil). The aim of this work was to evalúate the maturation of Cabernet Sauvignon grapes subjected to a Y training system or a vertical shoot positioning trellis (VSP). Grapes were sampled at 10-day intervals throughout their maturation during two consecutive vintage years (2004-2005 and 2005-2006). Climate data were assessed. Based on the results obtained in both vintage years at maturity, titratable acidities (TA) ranged from 0.67 to 0.85 g-100 mL-1 of tartaric with the pH fluctuating between 3.49 and 3.77. The maturation Índex (total soluble solids/TA) at maturity ranged from 26 to 35, and was... |
| Tipo: Journal article |
Palavras-chave: Cabernet Sauvignon grape; Ripening; Mesoclimate; Vertical shoot positioning trellis; Y system. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202008000300010 |
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| Falcão,Ana Paula; Chaves,Eduardo Sidinei; Kuskoski,Eugênia Marta; Fett,Roseane; Falcão,Leila Denise; Bordignon-Luiz,Marilde Terezinha. |
| Antocianinas são pigmentos fenólicos com potencial para substituição dos corantes artificiais vermelhos; porém, estes se apresentam instáveis frente ao processamento de alimentos, sendo a temperatura um dos principais fatores envolvidos na degradação da cor destes pigmentos. O objetivo deste trabalho foi avaliar a concentração de compostos fenólicos e a capacidade antioxidante de um sistema modelo de geléia de uvas (SMG) Isabel (Vitis labrusca) e Refosco (Vitis vinifera L.) elaborado a 45 °C, utilizando como agente espessante uma mistura de gomas xantana e locusta. Nos SMGs elaborados, avaliou-se a estabilidade dos pigmentos antociânicos e determinou-se polifenóis totais (IPT), antocianinas totais (AT). A atividade antioxidante foi medida utilizando os... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Uva; Antocianinas; Compostos fenólicos; Atividade antioxidante; Estabilidade. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612007000300032 |
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| Falcão,Ana Paula; Chaves,Eduardo Sidinei; Falcão,Leila Denise; Gauche,Cony; Barreto,Pedro Luiz Manique; Bordignon-Luiz,Marilde Terezinha. |
| Anthocyanins are the pigments responsible for the color of most red grapes and are easily degraded following various reaction mechanisms affected by oxygen, enzymes, pH, and temperature among other variables. In this study, a jam model system was developed using Merlot and Bordô grape extracts and polysaccharides (xanthan and locust bean gums) and different temperatures (45, 55 and 65 °C). The stability of the anthocyanin pigments and the rheological behavior of the jam model system were studied. For the determination of the stability, the half-life time and first-order reaction rate constants for the anthocyanin pigments were calculated. The rheological behavior was determined through the Power law model. The jam model system produced using a temperature... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera L.; Vitis labrusca L.; Anthocyanin; Xanthan gum; Rheological behavior. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612009000400024 |
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