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  • Title: Not-from-concentrate pilot plant 'Wonderful' cultivar pomegranate juice changes: Quality.
    Author: Beaulieu JC, Lloyd SW, Obando-Ulloa JM.
    Journal: Food Chem; 2020 Jul 15; 318():126453. PubMed ID: 32143128.
    Abstract:
    Colorful fruits conveying astringent beverages providing well documented health-benefits may present clarification, turbidity and sedimentation problems. Hydraulic pressing whole 'Wonderful' pomegranates and ultrafiltration followed by high temperature short-time pasteurization was used to mimic the dominant U.S. commercial juicing protocol, delivering not-from-concentrate juices, stored at 4 and 25 °C for 3 months. A goal was to avoid expensive and complicated clarification and fining steps. Data were subjected to an analysis of variance and principal components analysis. Changes in quality attributes, organic acids and anthocyanidins are presented. Hydraulic pressing, ultrafiltration and initial pasteurization had minor effects on color parameters, organic acids and anthocyanidins. There were no significant temperature, time or factorial effects for all color parameters during storage of the not-from-concentrate pasteurized juices. However, there were significant time- and temperature-effect decreases in organic acids and anthocyanidins. This is the first report on quality attributes in ultrafiltered, pasteurized and stored not-from-concentrate 'Wonderful' pomegranate juice.
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