Antioxidant phytonutrients are provided by all varieties of corn. The exact phytonutrient combination, however, depends on the variety itself. Yellow corn is richer in carotenoids, especially lutein and zeaxanthin. Blue corn has unique concentrations of anthocyanins. Purple corn provides unusual amounts of protocatechuic acid. Ferulic acid, beta-carotene, vanillic acid, coumaric acid, caffeic acid, and syringic acid are other key phytonutrients provided by corn. Corn is a good source of pantothenic acid, phosphorus, niacin, dietary fiber, manganese, and vitamin B6.