Onions, mature

Nutrient	Value	% DV
Energy
Energy (kcal)	40 kcal
Minerals
Calcium, Ca	23 mg	2%
Iron, Fe	0.21 mg	1%
Potassium, K	146 mg	4%
Sodium, Na	4 mg	0%
Zinc, Zn	0.17 mg	1%
Magnesium, Mg	10 mg	3%
Phosphorus, P	29 mg	3%
Copper, Cu	0.039 mg	2%
Selenium, Se	0.5 ug	1%
Fibers
Fiber, total dietary	1.7 g	7%
Protein
Protein	1.1 g	2%
Carbohydrates
Carbohydrate, by difference	9.34 g	3%
Sugars, total including NLEA	4.24 g
Fats
Total lipid (fat)	0.1 g	0%
Saturated fats
Fatty acids, total saturated	0.042 g	0%
14:0	0.004 g
16:0	0.034 g
18:0	0.004 g
Monounsaturated fats
Fatty acids, total monounsaturated	0.013 g
18:1	0.013 g
Polyunsaturated fats
Omega 3 (total)	0.004 g	0%
Fatty acids, total polyunsaturated	0.017 g
18:2	0.013 g
18:3	0.004 g
Vitamins
Vitamin E (alpha-tocopherol)	0.02 mg	0%
Vitamin C, total ascorbic acid	7.4 mg	12%
Vitamin B-6	0.12 mg	6%
Folate, total	19 ug	5%
Vitamin K (phylloquinone)	0.4 ug	1%
Carotene, beta	1 ug
Lutein + zeaxanthin	4 ug
Thiamin	0.046 mg	3%
Riboflavin	0.027 mg	2%
Niacin	0.116 mg	1%
Choline, total	6.1 mg	1%
Folate, food	19 ug	5%
Folate, DFE	19 ug	5%
General
Water	89.11 g	5%

Source: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, 2019. fdc.nal.usda.gov