The proxidant action of Vitamin C is potentiated by:: (A) Selenium, (B) Copper, (C) Calcium, (D) Iron
Answer is B. Ans. B. Copper(Ref: Harper 31/e page 533-540)Ascorbate is antioxidant, but it can be a source of hydroxyl radical by reacting with Cu2+ ions. Antioxidant vitamins that can act as prooxidants are:Beta caroteneAscorbateTocopherol