Vitamin Enhanced Waters and Polyphenol Rich Beverages Analyzed for Antioxidant Capacity and Antioxidants/Calorie

Nutrients

Patrick E. Donnelly¹  Thomas M. Churilla²  Michael G. Coco² 

[1] Loyola Hall of Science, Department of Chemistry, Scranton, Pennsylvania, 18510, USA;

关键词: polyphenols;    antioxidant capacity;    flavonoids;    Folin-Ciocalteu;   

DOI  :  10.3390/nu2121290

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland.