URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Onions, yellow, sauteed, 1 cup chopped Protein (g) 0.83 Total lipid (fat) (g) 9.4 Carbohydrate, by difference (g) 6.84 Energy (kcal) 114.84 Fiber, total dietary (g) 1.48 Calcium, Ca (mg) 17.4 Iron, Fe (mg) 0.23 Magnesium, Mg (mg) 7.83 Phosphorus, P (mg) 28.71 Potassium, K (mg) 115.71 Sodium, Na (mg) 10.44 Zinc, Zn (mg) 0.18 Copper, Cu (mg) 0.01 Manganese, Mn (mg) 0.09 Vitamin E (alpha-tocopherol) (mg) 0.59 Vitamin C, total ascorbic acid (mg) 1.57 Thiamin (mg) 0.04 Riboflavin (mg) 0.04 Niacin (mg) 0.03 Pantothenic acid (mg) 0.15 Vitamin B-6 (mg) 0.18 Folate, total (mcg) 1.74 Vitamin K (phylloquinone) (mcg) 18.79