title: Vitamin enhanced waters and polyphenol rich beverages analyzed for antioxidant capacity and antioxidants/calorie.
abstract: The purpose of this study was to analyze polyphenol rich beverages (vitamin enhanced waters (VEWs), fruit juices and berry juices) to determine free polyphenol concentrations and free polyphenols per Calorie based on a serving size. The Folin-Ciocalteu reagent was used in a colorimetric assay based on a catechin standard. Fruit and berry juices contained, on average, more than eight-times the concentration of free polyphenols when compared to VEWs. When Calories per serving were taken into consideration, fruit and berry juices contained more than twice the free polyphenols per Calorie.
authors.affiliation: Loyola Hall of Science, Department of Chemistry, Scranton, Pennsylvania 18510, USA. pdonnell@princeton.edu
authors.forename: Patrick E
authors.initials: PE
authors.lastname: Donnelly
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Churilla
authors.forename: Michael G
authors.initials: MG
authors.lastname: Coco
authors.forename: Joe A
authors.initials: JA
authors.lastname: Vinson
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D001628:Beverages / Q000032:analysis*; D003124:Colorimetry; D005638:Fruit / Q000737:chemistry*; D006801:Humans; D007202:Indicators and Reagents; D008982:Molybdenum; D059808:Polyphenols / Q000032:analysis*; D017973:Tungsten Compounds; D014815:Vitamins / Q000032:analysis; D014867:Water / Q000032:analysis*
chemical_list: D000975:Antioxidants; C029556:Folin's phenol reagent; D007202:Indicators and Reagents; D059808:Polyphenols; D017973:Tungsten Compounds; D014815:Vitamins; D014867:Water; D008982:Molybdenum