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      Antioxidant capacities of individual and combined phenolics in a model system

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      Food Chemistry
      Elsevier BV

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          Total Antioxidant Capacity of Fruits

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            Chlorogenic acids and other cinnamates - nature, occurrence, dietary burden, absorption and metabolism

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              Phenol antioxidant quantity and quality in foods: fruits.

              The free and bound phenols have been measured in 20 fruits commonly consumed in the American diet. Phenols were measured colorimetrically using the Folin-Ciocalteu reagent with catechin as the standard after correction for ascorbic acid contribution. On a fresh weight basis, cranberry had the highest total phenols, and was distantly followed by red grape. Free and total phenol quality in the fruits was analyzed by using the inhibition of lower density lipoprotein oxidation promoted by cupric ion. Ascorbate had only a minor contribution to the antioxidants in fruits with the exception of melon, nectarine, orange, white grape, and strawberry. The fruit extracts' antioxidant quality was better than the vitamin antioxidants and most pure phenols, suggesting synergism among the antioxidants in the mixture. Using our assay, fruits had significantly better quantity and quality of phenol antioxidants than vegetables. Fruits, specifically apples and cranberries, have phenol antioxidants that can enrich lower density lipoproteins and protect them from oxidation. The average per capita consumption of fruit phenols in the U.S. is estimated to be 255 mg/day of catechin equivalents.
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                Author and article information

                Journal
                Food Chemistry
                Food Chemistry
                Elsevier BV
                03088146
                January 2007
                January 2007
                : 104
                : 1
                : 87-92
                Article
                10.1016/j.foodchem.2006.11.002
                10ad3199-03b4-4170-b3fe-d0878074cfcf
                © 2007

                http://www.elsevier.com/tdm/userlicense/1.0/

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