In addition to vitamins and minerals, research documented by Potatoes USA shows potatoes contain an assortment of phytochemicals with antioxidant potential, most notably carotenoids and anthocyanins. According to Potatoes USA’s Nutritional Handbook, anthocyanins are found in the greatest quantities in purple and red potatoes while carotenoids are found largely in yellow and red potatoes. Also referenced in Potatoes USA’s Nutritional Handbook; a research study examined the total antioxidant capacity of more than 100 different foods including fruits, vegetables, nuts and more. Researchers found that out of the 42 vegetables that were tested, Russet potatoes ranked fifth highest in their total antioxidant levels, coming in behind small red beans, kidney beans, pinto beans and artichokes. However, potatoes scored higher than other vegetables often more commonly known for their antioxidant potential including broccoli, cabbage and tomatoes.