URMC / Encyclopedia / Content Search Encyclopedia Nutrition Facts Onions, young green, tops only, 1 tbsp Protein (g) 0.11 Total lipid (fat) (g) 0.01 Carbohydrate, by difference (g) 0.34 Energy (kcal) 1.5 Sugars, total (g) 0.13 Fiber, total dietary (g) 0.21 Calcium, Ca (mg) 3.66 Iron, Fe (mg) 0.12 Magnesium, Mg (mg) 1.2 Phosphorus, P (mg) 1.98 Potassium, K (mg) 15.6 Sodium, Na (mg) 0.24 Zinc, Zn (mg) 0.03 Copper, Cu (mg) 0 Manganese, Mn (mg) 0.01 Selenium, Se (mcg) 0.03 Vitamin A, IU (IU) 240 Retinol (mcg) 0 Carotene, beta (mcg) 144 Carotene, alpha (mcg) 0 Vitamin E (alpha-tocopherol) (mg) 0.01 Cryptoxanthin, beta (mcg) 0 Lycopene (mcg) 0 Lutein + zeaxanthin (mcg) 54.96 Vitamin C, total ascorbic acid (mg) 2.74 Thiamin (mg) 0 Riboflavin (mg) 0.01 Niacin (mg) 0.01 Pantothenic acid (mg) 0 Vitamin B-6 (mg) 0 Folate, total (mcg) 0.84 Vitamin B-12 (mcg) 0 Vitamin K (phylloquinone) (mcg) 1.36 Folic acid (mcg) 0 Folate, DFE (mcg_DFE) 0.84 Cholesterol (mg) 0 Fatty acids, total saturated (g) 0 Fatty acids, total monounsaturated (g) 0 Fatty acids, total polyunsaturated (g) 0