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Grape Consumption Improves Antioxidant Capacity in Humans
Date:10/12/2007

Bioactive Grape Antioxidants Shown to Prevent Post-Meal Oxidative Stress

FRESNO, Calif., Oct. 12 /PRNewswire/ -- A side of grapes with that burger? It is probably a good idea based on health research findings presented at the Second International Symposium on Human Health Effects of Fruits and Vegetables in Houston, Texas this week.

The symposium presented evidence that high antioxidant foods should be consumed with each meal to prevent periods of post-meal oxidative stress. Oxidative stress is linked to aging and the onset of chronic diseases. Antioxidants are known for their ability to neutralize free radicals that are generated by an array of environmental stresses on the body -- from natural processes to external assaults such as smoking and pollution.

Among the fruits specifically highlighted as beneficial were grapes, which, after consumption resulted in almost double the amount of recommended total antioxidant capacity needed to counteract the deficit associated with consuming 1000 calories of food.

Dr. Ronald L. Prior of the USDA's Arkansas Children's Nutrition Center, widely recognized as a pioneer of the ORAC (Oxygen Radical Absorbance Capacity) technique for measuring antioxidant capacity in foods, shared his findings regarding the natural state of oxidative stress in the body that results from eating a meal and the ability to counteract it in humans following consumption of certain fruits.

Prior showed that the metabolic process of digesting a meal with no antioxidants -- just fat, carbohydrate and protein -- causes a decline in antioxidant capacity of the blood which creates a temporary state of oxidative stress. This deficit can be prevented by consuming high antioxidant fruits such as grapes, which in this study provided almost double the amount needed to bring the body back in balance following the meal. His work also showed that some fruits that typically score high in antioxidant content, may not significantly im
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SOURCE California Table Grape Commission
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