Among the nutritional properties of the onion, it should be noted that it has the following nutrients: 0.27 mg. of iron, 1.19 g. of proteins, 25.40 mg. of calcium, 1.80 g. of fiber, 162 mg. of potassium, 8.90 mg. of iodine, 0.26 mg. of zinc, 5.30 g. of carbohydrates, 4.20 mg. of magnesium, 3 mg. of sodium, 1.40 ug. of vitamin A, 0.03 mg. of vitamin B1, 0.03 mg. of vitamin B2, 0.72 mg. of vitamin B3, 0.11 ug. of vitamin B5, 0.13 mg. of vitamin B6, 3.50 ug. of vitamin B7, 7 ug. of vitamin B9, 0 ug. of vitamin B12, 6.90 mg. of vitamin C, 0 ug. of vitamin D, 0.45 mg. of vitamin E, 0.70 ug. of vitamin K, 33 mg. of phosphorus, 31.85 kcal. of calories, 0 mg. of cholesterol, 0.25 g. of fat, 5.30 g. of sugar and 13 mg. of purines.