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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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| Rodrigues,Eliseu; Rockenbach,Ismael Ivan; Cataneo,Ciriele; Gonzaga,Luciano Valdemiro; Chaves,Eduardo Sidinei; Fett,Roseane. |
| Physalis peruviana is an exotic fruit that belongs to the Solanaceae family and which has recently started to be produced in Brazil, mainly in the Southern region. Once there is few data regarding its chemical composition, this work presents the centesimal and mineral composition and the fatty acid profile of the lipidic fraction of Physalis peruviana. Concerning the centesimal composition, Physalis presented high contents of ashes and total lipids, 0.8 and 3.16 g.100 g-1, respectively. In its mineral composition, K, Mg, Ca and Fe were the main elements, and Fe is present in concentrations higher than those in the common sources such as beans. The lipidic fraction presented predominance of the linoleic acid (72,42%) in its composition. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Physalis; Chemical composition; Fatty acids; Minerals. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612009000300029 |
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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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