The proxidant action of Vitamin C is potentiated by:
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
Selenium
Copper
Calcium
Iron
Nutrition & Digestion