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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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| Burin,Vívian Maria; Falcão,Leila Denise; Gonzaga,Luciano Valdemiro; Fett,Roseane; Rosier,Jean Pierre; Bordignon-Luiz,Marilde Terezinha. |
| Viticultural practices in the State of Santa Catarina, Brazil, have shown economic growth, with the production of grapes used to produce wines and grape juice. Grapes are rich in phenolic compounds which have drawn attention not only because of their important role in the development of products derived from grapes, but also for their potential beneficial health effects. The objective of this study was to evaluate commercial, organic and homemade grape juices produced in Santa Catarina. Grape juices were analyzed for total phenolic content, colour, and antioxidant activity. The commercial juices had the highest average values for total monomeric anthocyanins and total phenolics. There was a strong positive correlation (R = 0.9566) between the antioxidant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthocyanins; Phenolics compounds; Vitis labrusca. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000400030 |
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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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| Burin,Vívian Maria; Silva,Aparecido Lima da; Malinovski,Luciane Isabel; Rosier,Jean Pierre; Falcão,Leila Denise; Bordignon-Luiz,Marilde Teresinha. |
| The objective of this work was to assess and characterize two clones, 169 and 685, of Cabernet Sauvignon grapes and to evaluate the wine produced from these grapes. The experiment was carried out in São Joaquim, SC, Brazil, during the 2009 harvest season. During grape ripening, the evolution of physical-chemical properties, phenolic compounds, organic acids, and anthocyanins was evaluated. During grape harvest, yield components were determined for each clone. Individual and total phenolics, individual and total anthocyanins, and antioxidant activity were evaluated for wine. The clones were also assessed regarding the duration of their phenological cycle. During ripening, the evolution of phenolic compounds and of physical-chemical parameters was similar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phenolic compounds; Phenology; Ripeness. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000500004 |
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