URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Onions, raw, 1 large Protein (g) 1.38 Total lipid (fat) (g) 0.12 Carbohydrate, by difference (g) 15.16 Energy (kcal) 63 Sugars, total (g) 6.42 Fiber, total dietary (g) 2.1 Calcium, Ca (mg) 33 Iron, Fe (mg) 0.28 Magnesium, Mg (mg) 15 Phosphorus, P (mg) 40.5 Potassium, K (mg) 216 Sodium, Na (mg) 4.5 Zinc, Zn (mg) 0.24 Copper, Cu (mg) 0.06 Manganese, Mn (mg) 0.2 Selenium, Se (mcg) 0.75 Vitamin A, IU (IU) 3 Retinol (mcg) 0 Carotene, beta (mcg) 1.5 Carotene, alpha (mcg) 0 Vitamin E (alpha-tocopherol) (mg) 0.03 Cryptoxanthin, beta (mcg) 0 Lycopene (mcg) 0 Lutein + zeaxanthin (mcg) 7.5 Vitamin C, total ascorbic acid (mg) 9.6 Thiamin (mg) 0.07 Riboflavin (mg) 0.04 Niacin (mg) 0.12 Pantothenic acid (mg) 0.18 Vitamin B-6 (mg) 0.22 Folate, total (mcg) 28.5 Vitamin B-12 (mcg) 0 Vitamin K (phylloquinone) (mcg) 0.6 Folic acid (mcg) 0 Folate, DFE (mcg_DFE) 28.5 Cholesterol (mg) 0 Fatty acids, total saturated (g) 0.04 Fatty acids, total monounsaturated (g) 0.03 Fatty acids, total polyunsaturated (g) 0.09