ORAC, or Oxygen Radical Absorbance Capacity, is a method of measuring antioxidant capacities in biological samples. The higher the ORAC score, the higher the food's potential antioxidant capacity.

Out of the fruits and vegetables mentioned, the Purple Sweet Potato, specifically its flesh, might have the highest ORAC value. The purple color of the sweet potato is due to anthocyanins, a type of flavonoid with potent antioxidant effects.

However, it's important to note that ORAC values can vary greatly depending on how the food is prepared and consumed. Cooking methods can significantly influence a food's antioxidant activity. Furthermore, consuming foods high in ORAC values as part of a balanced diet is beneficial, but relying on high-ORAC foods alone won't ensure optimal health. It's the overall pattern of your eating that is most important in disease prevention and achieving good health.
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