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Onion vs. Oatmeal — In-Depth Nutrition Comparison

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A recap on differences between onions and oatmeal

  • Onions have more vitamin C; however, oatmeal is higher in iron, manganese, vitamin B3, vitamin B1, vitamin B2, vitamin B6, vitamin A, selenium, and phosphorus.
  • Oatmeal covers your daily iron needs 72% more than onions.
  • The glycemic index of oatmeal is higher.

Food varieties used in this article are Onions, raw and Cereals, oats, instant, fortified, plain, prepared with water (boiling water added or microwaved).

Infographic

Onion vs Oatmeal infographic
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Mineral Comparison

Mineral comparison score is based on the number of minerals by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
Onion
2
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 7.1% 6.9% 13% 7.9% 13% 4.6% 12% 0.52% 17% 2.7%
Magnesium Magnesium Calcium Calcium Potassium Potassium Iron Iron Copper Copper Zinc Zinc Phosphorus Phosphorus Sodium Sodium Manganese Manganese Selenium Selenium 19% 24% 5.4% 224% 22% 17% 33% 6.4% 73% 27%
Contains more PotassiumPotassium +139.3%
Contains less SodiumSodium -91.8%
Contains more MagnesiumMagnesium +160%
Contains more CalciumCalcium +247.8%
Contains more IronIron +2738.1%
Contains more CopperCopper +69.2%
Contains more ZincZinc +264.7%
Contains more PhosphorusPhosphorus +165.5%
Contains more ManganeseManganese +332.6%
Contains more SeleniumSelenium +900%

Vitamin Comparison

Vitamin comparison score is based on the number of vitamins by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
Onion
2
Vitamin C Vit. C Vitamin A Vit. A Vitamin E Vit. E Vitamin D Vit. D Vitamin B1 Vit. B1 Vitamin B2 Vit. B2 Vitamin B3 Vit. B3 Vitamin B5 Vit. B5 Vitamin B6 Vit. B6 Vitamin B12 Vit. B12 Vitamin K Vit. K Folate Folate Choline Choline 25% 0% 0.4% 0% 12% 6.2% 2.2% 7.4% 28% 0% 1% 14% 3.3%
Vitamin C Vit. C Vitamin A Vit. A Vitamin E Vit. E Vitamin D Vit. D Vitamin B1 Vit. B1 Vitamin B2 Vit. B2 Vitamin B3 Vit. B3 Vitamin B5 Vit. B5 Vitamin B6 Vit. B6 Vitamin B12 Vit. B12 Vitamin K Vit. K Folate Folate Choline Choline 0% 43% 1.4% 0% 65% 50% 57% 19% 67% 0% 1% 33% 2.6%
Contains more Vitamin CVitamin C +∞%
Contains more CholineCholine +29.8%
Contains more Vitamin AVitamin A +∞%
Contains more Vitamin EVitamin E +250%
Contains more Vitamin B1Vitamin B1 +465.2%
Contains more Vitamin B2Vitamin B2 +696.3%
Contains more Vitamin B3Vitamin B3 +2507.8%
Contains more Vitamin B5Vitamin B5 +157.7%
Contains more Vitamin B6Vitamin B6 +141.7%
Contains more FolateFolate +131.6%
~equal in Vitamin D ~0µg
~equal in Vitamin B12 ~0µg
~equal in Vitamin K ~0.4µg

All nutrients comparison - raw data values

Nutrient Onion Oatmeal DV% diff.
Iron 0.21mg 5.96mg 72%
Manganese 0.129mg 0.558mg 19%
Vitamin B3 0.116mg 3.025mg 18%
Vitamin B1 0.046mg 0.26mg 18%
Vitamin B2 0.027mg 0.215mg 14%
Vitamin A 0µg 130µg 14%
Vitamin B6 0.12mg 0.29mg 13%
Vitamin C 7.4mg 0mg 8%
Selenium 0.5µg 5µg 8%
Phosphorus 29mg 77mg 7%
Folate 19µg 44µg 6%
Calcium 23mg 80mg 6%
Magnesium 10mg 26mg 4%
Zinc 0.17mg 0.62mg 4%
Starch 0g 10.37g 4%
Vitamin B5 0.123mg 0.317mg 4%
Potassium 146mg 61mg 3%
Polyunsaturated fat 0.017g 0.426g 3%
Copper 0.039mg 0.066mg 3%
Protein 1.1g 2.37g 3%
Fructose 1.29g 0g 2%
Fats 0.1g 1.36g 2%
Sodium 4mg 49mg 2%
Saturated fat 0.042g 0.226g 1%
Monounsaturated fat 0.013g 0.391g 1%
Calories 40kcal 68kcal 1%
Carbs 9.34g 11.67g 1%
Net carbs 7.64g 9.97g N/A
Sugar 4.24g 0.46g N/A
Fiber 1.7g 1.7g 0%
Vitamin E 0.02mg 0.07mg 0%
Vitamin K 0.4µg 0.4µg 0%
Trans fat 0g 0.003g N/A
Choline 6.1mg 4.7mg 0%
Tryptophan 0.014mg 0.04mg 0%
Threonine 0.021mg 0.083mg 0%
Isoleucine 0.014mg 0.105mg 0%
Leucine 0.025mg 0.2mg 0%
Lysine 0.039mg 0.135mg 0%
Methionine 0.002mg 0.04mg 0%
Phenylalanine 0.025mg 0.13mg 0%
Valine 0.021mg 0.151mg 0%
Histidine 0.014mg 0.057mg 0%

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
Onion
1
9% 89%
Protein: 1.1 g
Fats: 0.1 g
Carbs: 9.34 g
Water: 89.11 g
Other: 0.35 g
2% 12% 84%
Protein: 2.37 g
Fats: 1.36 g
Carbs: 11.67 g
Water: 84.03 g
Other: 0.57 g
Contains more ProteinProtein +115.5%
Contains more FatsFats +1260%
Contains more CarbsCarbs +24.9%
Contains more OtherOther +62.9%
~equal in Water ~84.03g

Fat Type Comparison

Fat type breakdown side-by-side comparison
Onion
1
58% 18% 24%
Saturated fat: Sat. Fat 0.042 g
Monounsaturated fat: Mono. Fat 0.013 g
Polyunsaturated fat: Poly. Fat 0.017 g
22% 37% 41%
Saturated fat: Sat. Fat 0.226 g
Monounsaturated fat: Mono. Fat 0.391 g
Polyunsaturated fat: Poly. Fat 0.426 g
Contains less Sat. FatSaturated fat -81.4%
Contains more Mono. FatMonounsaturated fat +2907.7%
Contains more Poly. FatPolyunsaturated fat +2405.9%

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
Onion
3
23% 46% 30%
Starch: 0 g
Sucrose: 0.99 g
Glucose: 1.97 g
Fructose: 1.29 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
96% 3%
Starch: 10.37 g
Sucrose: 0.29 g
Glucose: 0 g
Fructose: 0 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0.16 g
Contains more SucroseSucrose +241.4%
Contains more GlucoseGlucose +∞%
Contains more FructoseFructose +∞%
Contains more StarchStarch +∞%
Contains more GalactoseGalactose +∞%
~equal in Lactose ~0g
~equal in Maltose ~0g

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References

All the values for which the sources are not specified explicitly are taken from FDA’s Food Central. The exact link to the food presented on this page can be found below.

  1. Onion - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170000/nutrients
  2. Oatmeal - https://fdc.nal.usda.gov/fdc-app.html#/food-details/171662/nutrients

All the Daily Values are presented for males aged 31-50, for 2000-calorie diets.

Data provided by FoodStruct.com should be considered and used as information only. Please consult your physician before beginning any diet.