RESUMO -As indústrias de frutas destacam-se pelo volume de resíduo gerado e, principalmente, pela composição dos mesmos. O Brasil vem-se consolidando como um importante produtor mundial de suco de uva, gerando grande quantidade de resíduos diversos, como o bagaço, que corresponde a aproximadamente 20% da fruta processada. O bagaço constitui-se de casca e semente, e apresenta uma composição rica e heterogênea em compostos fenólicos (flavonoides e não flavonoides), razão pela qual foi empregado como matéria-prima no presente trabalho para a obtenção de um extrato bioativo. As extrações enzimática e etanólica foram avaliadas para a recuperação destes compostos para fins alimentícios. Dentre as condições avaliadas nos dois planejamentos experimentais, a extração hidroetanólica foi mais eficiente na recuperação dos compostos bioativos (p< 0,01), cujo extrato apresentou uma capacidade antioxidante de 1.965 µmol Trolox por 100 g de bagaço, 25% superior à do extrato obtido com a melhor condição enzimática (1.580 µmol Trolox por 100 g de bagaço). Termos de indexação: reaproveitamento de coprodutos, Vitis sp., compostos fenólicos, antioxidantes, extração etanólica; extração enzimática. RECOVERY OF BIOACTIVE COMPOUNDS FROM GRAPE POMACEABSTRACT -Fruit industries are highlighted by the residue amount and especially, for its composition. Brazil thereby is consolidating as an important grape juice producer, generating a large amount of diverse residues like grape pomace, which corresponds around 20% of total fruit processed. Grape pomace is constituted by seeds and peel and presents rich and heterogeneous composition in phenolic compounds (flavonoids and non flavonoids), reason why it was employed as raw material to obtain a bioactive extract in this study. Enzymatic and ethanolic extractions were evaluated to recover these compounds as they are able for application in food products. Between the evaluated conditions in both experimental design, ethanolic extraction was more efficient for the recovery of bioactive compounds (p<0,01), which extract presented an antioxidant activity of 1.965 µmol Trolox per 100 g of grape pomace, 25% higher than the extract obtained in the better enzymatic extraction (1.580 µmol Trolox per 100 g of grape pomace).
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