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EDTA which had 94.8%. The iron chelators, with the exception of BHA, showed good reducing ability than vitamin C. Caffeic acid showed significant DPPH, hydrogen peroxide and hydroxyl radical scavenging activities of 84.7%, 99.8% and 14.5%, respectively. All the iron chelators were observed to show significant activities in all five antioxidant assays.
Adjimani et al. (Thu,) studied this question.