Abstract
ABSTRACTCondensed tannins were extracted from beach pea, Cyclone canola hulls, evening primrose and faba bean using 70% aqueous acetone. The dried crude tannin extracts were purified on a Sephadex LH‐20 column using first 95% ethanol as a mobile phase for elution of nontannin phenolics and then 50% aqueous acetone to elute tannins. The total content of polyphenolics in tannin extracts ranged between 10 and 405 mg catechin equivalents per 1 g extract. All tannins extracts displayed a marked antioxidant activity in a β‐carotene‐linoleate model system. Evening primrose and faba bean tannin extracts exhibited the best
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