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Retention of vitamin C in homogenized raw fruits and vegetables stored under routine conditions prior to analysis was investigated. Raw collard greens (Brassica oleracea var. viridis), clementines (Citrus clementina hort. ex Tanaka), and potatoes (Solanum tuberosum) were chosen, being representative of foods to be sampled in USDA's National Food and Nutrient Analysis Program (NFNAP), and having different...
Vitamin C is one of the most important antioxidant supplied by fruits and vegetables. Therefore a reliable and easy method is needed for its determination. In this work, two UV-HPLC methods for the determination of ascorbic acid were validated and compared in strawberries, tomatoes and apples. In addition, two different reducing agents [dl-1,4-dithiotreitol (DTT) or 2,3-dimercapto-1-propanol (BAL)]...
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