Download – Plasma Antioxidant Capacity Changes

Journal of the American College of Nutrition 26, no.2 (2007):170-181. Prior, R. L., Gu, L., Wu, S., Jacob, R.A., Sotoudeh, G., Kader, A.A. and Cook, R.A

This study was undertaken to determine if the consumption of meals of blueberries, grapes, kiwifruit, strawberry, cherry and dried plums increased plasma antioxidant capacity (AOC) measured as Oxygen Radical Absorbance Capacity (ORACfl); whether macronutrient composition of the meal alters postprandial changes in AOC; and whether preliminary recommendations can be developed for antioxidant intake. Results suggest that certain berries and fruits increased postprandial AOC. Plasma AOC did not change after a meal with dried plums or prune juice. The authors comment that chlorogenic acid or its isomers which predominate in dried plums may be poorly absorbed. Low absorption of these compounds or metabolism into compounds with lower AOC may account for the limited in vivoantioxidant response to these phytochemicals.