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Onion vs. Eggplant — In-Depth Nutrition Comparison

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Differences between onions and eggplant

  • Onions have more vitamin C, while eggplant has more fiber.
  • Onions have a lower glycemic index. The glycemic index of onions is 15, while the glycemic index of eggplant is 30.

The food types used in this comparison are Onions, raw and Eggplant, raw.

Infographic

Onion vs Eggplant infographic
Infographic link

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
3
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 10% 2.7% 20% 8.6% 27% 4.4% 10% 0.26% 30% 1.6%
Contains more CalciumCalcium +155.6%
Contains more PhosphorusPhosphorus +20.8%
Contains more SeleniumSelenium +66.7%
Contains more MagnesiumMagnesium +40%
Contains more PotassiumPotassium +56.8%
Contains more CopperCopper +107.7%
Contains less SodiumSodium -50%
Contains more ManganeseManganese +79.8%
~equal in Iron ~0.23mg
~equal in Zinc ~0.16mg

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
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 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 7.3% 0.33% 6% 0% 9.8% 8.5% 12% 17% 19% 0% 8.8% 17% 3.8%
Contains more Vitamin CVitamin C +236.4%
Contains more Vitamin B1Vitamin B1 +17.9%
Contains more Vitamin B6Vitamin B6 +42.9%
Contains more Vitamin AVitamin A +∞%
Contains more Vitamin EVitamin E +1400%
Contains more Vitamin B2Vitamin B2 +37%
Contains more Vitamin B3Vitamin B3 +459.5%
Contains more Vitamin B5Vitamin B5 +128.5%
Contains more Vitamin KVitamin K +775%
Contains more FolateFolate +15.8%
Contains more CholineCholine +13.1%
~equal in Vitamin D ~0µg
~equal in Vitamin B12 ~0µg

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
Onion
2
9% 89%
Protein: 1.1 g
Fats: 0.1 g
Carbs: 9.34 g
Water: 89.11 g
Other: 0.35 g
6% 92%
Protein: 0.98 g
Fats: 0.18 g
Carbs: 5.88 g
Water: 92.3 g
Other: 0.66 g
Contains more ProteinProtein +12.2%
Contains more CarbsCarbs +58.8%
Contains more FatsFats +80%
Contains more OtherOther +88.6%
~equal in Water ~92.3g

Fat Type Comparison

Fat type breakdown side-by-side comparison
Onion
0
58% 18% 24%
Saturated fat: Sat. Fat 0.042 g
Monounsaturated fat: Mono. Fat 0.013 g
Polyunsaturated fat: Poly. Fat 0.017 g
27% 13% 60%
Saturated fat: Sat. Fat 0.034 g
Monounsaturated fat: Mono. Fat 0.016 g
Polyunsaturated fat: Poly. Fat 0.076 g
Contains less Sat. FatSaturated fat -19%
Contains more Mono. FatMonounsaturated fat +23.1%
Contains more Poly. FatPolyunsaturated fat +347.1%

Carbohydrate type comparison

Carbohydrate type breakdown side-by-side comparison
Onion
2
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
8% 47% 46%
Starch: 0 g
Sucrose: 0.26 g
Glucose: 1.58 g
Fructose: 1.54 g
Lactose: 0 g
Maltose: 0 g
Galactose: 0 g
Contains more SucroseSucrose +280.8%
Contains more GlucoseGlucose +24.7%
Contains more FructoseFructose +19.4%
~equal in Starch ~0g
~equal in Lactose ~0g
~equal in Maltose ~0g
~equal in Galactose ~0g

Comparison summary table

Pay attention to the rightmost column. It displays the amounts side by side, giving a clearer understanding of the difference.
Onion Eggplant
Lower in Glycemic Index ok
Lower in Sugar ok
Lower in Sodium ok
Lower in Saturated fat ok
Rich in vitamins ok
Lower in Cholesterol Equal
Lower in price Equal
Rich in minerals Equal

All nutrients comparison - raw data values

Nutrient Onion Eggplant DV% diff.
Vitamin C 7.4mg 2.2mg 6%
Fiber 1.7g 3g 5%
Copper 0.039mg 0.081mg 5%
Manganese 0.129mg 0.232mg 4%
Vitamin K 0.4µg 3.5µg 3%
Vitamin B6 0.12mg 0.084mg 3%
Vitamin B5 0.123mg 0.281mg 3%
Vitamin B3 0.116mg 0.649mg 3%
Vitamin E 0.02mg 0.3mg 2%
Potassium 146mg 229mg 2%
Calories 40kcal 25kcal 1%
Folate 19µg 22µg 1%
Vitamin B2 0.027mg 0.037mg 1%
Vitamin B1 0.046mg 0.039mg 1%
Calcium 23mg 9mg 1%
Phosphorus 29mg 24mg 1%
Magnesium 10mg 14mg 1%
Carbs 9.34g 5.88g 1%
Protein 1.1g 0.98g 0%
Fats 0.1g 0.18g 0%
Net carbs 7.64g 2.88g N/A
Iron 0.21mg 0.23mg 0%
Sugar 4.24g 3.53g N/A
Zinc 0.17mg 0.16mg 0%
Sodium 4mg 2mg 0%
Vitamin A 0µg 1µg 0%
Selenium 0.5µg 0.3µg 0%
Choline 6.1mg 6.9mg 0%
Saturated fat 0.042g 0.034g 0%
Monounsaturated fat 0.013g 0.016g 0%
Polyunsaturated fat 0.017g 0.076g 0%
Tryptophan 0.014mg 0.009mg 0%
Threonine 0.021mg 0.037mg 0%
Isoleucine 0.014mg 0.045mg 0%
Leucine 0.025mg 0.064mg 0%
Lysine 0.039mg 0.047mg 0%
Methionine 0.002mg 0.011mg 0%
Phenylalanine 0.025mg 0.043mg 0%
Valine 0.021mg 0.053mg 0%
Histidine 0.014mg 0.023mg 0%
Fructose 1.29g 1.54g 0%

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Onion Eggplant
Low Calories diet ok
Low Fats diet ok
Low Carbs diet ok
Low Glycemic Index diet ok

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Vitamins & Minerals Daily Need Coverage Score

The summary scores indicate the extent to which this food can fulfill your daily vitamin and mineral requirements if you consume 3 servings, consisting of 100 grams of each (an approximation of 3 serving sizes).
Vitamins Daily Need Coverage Score
8%
Onion
8%
Eggplant
Minerals Daily Need Coverage Score
8%
Onion
12%
Eggplant

Comparison summary

Which food is lower in glycemic index?
Onion
Onion is lower in glycemic index (difference - 15)
Which food is lower in Sugar?
Eggplant
Eggplant is lower in Sugar (difference - 0.71g)
Which food contains less Sodium?
Eggplant
Eggplant contains less Sodium (difference - 2mg)
Which food is lower in Saturated fat?
Eggplant
Eggplant is lower in Saturated fat (difference - 0.008g)
Which food is richer in vitamins?
Eggplant
Eggplant is relatively richer in vitamins
Which food contains less Cholesterol?
?
The foods are relatively equal in Cholesterol (0 mg)
Which food is cheaper?
?
The foods are relatively equal in price ($0.2)
Which food is richer in minerals?
?
It cannot be stated which food is richer in vitamins. See the charts below for detailed information. See the charts below for detailed information. See the charts below for detailed information.

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. Eggplant - https://fdc.nal.usda.gov/fdc-app.html#/food-details/169228/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.