Grape seed extract oligomeric proanthocyanidins, a bioflavonoid with special molecular structure, is recognized as the most effective natural antioxidant in the world. Grape seed extract is reddish brown powder, slightly airy, astringent, soluble in water and most organic solvents. Experiments showed that the antioxidant capacity of grape seed extract oligomeric proanthocyanidins was 50 times of vitamin E and 20 times of vitamin C, and the absorption rate was fast and complete.
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