Ellagic acid
Ellagic acid is a compound found in numerous fruits and vegetables, including, raspberries; strawberries; cranberries; walnuts; pecans; pomegranates; and other plant foods. It is often regarded as an antioxidant.
Plant life
Plants produce ellagic acid and glucose that combine to form ellagitannins, which are water-soluble compounds that are easier for animals and humans to absorb into their diets.