✦ Quercetin
✦ Prebiotic fibre
✦ Low calorie
✦ Sulphur compounds
Onions are alliums that provide quercetin, sulphur compounds and prebiotic fibres such as inulin, which feed gut bacteria. They are low in calories and add flavour with few drawbacks.
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Preparation note
Boil briefly in a small amount of water; folate and quercetin can leach into the liquid, so use it in the dish where possible.
Sources:
CoFID 2021
Where Onions, boiled in unsalted water Stands Out
Micronutrient
Potassium
105 mg
per 100g · tap to explore →
Micronutrient
Chloride
49.0 mg
per 100g · tap to explore →
Micronutrient
Calcium
25.0 mg
per 100g · tap to explore →
Micronutrient
Phosphorus
23.0 mg
per 100g · tap to explore →
Flavonols
Quercetin
10.6 mg
per 100g · USDA Flavonoid DB 3.3 (2018); NDB_No 99082 · tap to explore →
Macronutrients per 100g
108
kJ
Energy
0.70
g
Protein
5.40
g
Carbs
1.30
g
Fibre
0.30
g
Fat
4.20
g
Sugars
0.01
g
Salt
Vitamins & Minerals
| Nutrient | Per 100g | % Daily Value* | Level |
|---|---|---|---|
| Potassium | 105 mg | 5% | |
| Chloride | 49.0 mg | 6% | |
| Calcium | 25.0 mg | 3% | |
| Phosphorus | 23.0 mg | 3% | |
| Folate | 8.00 µg | 4% | |
| Magnesium | 7.00 mg | 2% | |
| Vitamin C | 4.00 mg | 5% | |
| Vitamin A (RAE) | 0.420 µg | 0% | |
| Vitamin E (alpha-TE) | 0.310 mg | 3% | |
| Niacin (B3) | 0.300 mg | 2% | |
| Iron | 0.290 mg | 2% | |
| Zinc | 0.200 mg | 2% | |
| Manganese | 0.110 mg | 6% | |
| Vitamin B6 | 0.070 mg | 5% | |
| Pantothenic Acid (B5) | 0.060 mg | 1% | |
| Copper | 0.050 mg | 5% | |
| Thiamin (B1) | 0.030 mg | 3% | |
| Vitamin B12 | 0.000 µg | 0% | |
| Vitamin D | 0.000 µg | 0% | |
| Iodine | 2.00 µg | 1% | |
| Polyunsaturated fat (PUFA) | 0.140 g | — | |
| Trans fat | 0.000 g | — | |
| Glucose (dextrose) | 1.60 g | — | |
| Sucrose | 1.40 g | — | |
| Fructose | 1.20 g | — | |
| Cholesterol | 0.000 mg | — | |
| Beta-carotene | 5.00 µg | — | |
| Biotin (Vitamin B7) | 0.700 µg | 1% | |
| Retinol (vitamin A) | 0.000 µg | 0% |
* % Daily Value based on EU Nutrient Reference Values (NRVs). — indicates no EU NRV established.
Primary data source for this entry:
McCance & Widdowson's Composition of Foods Integrated Dataset (CoFID 2021), Public Health England. Source record tag: CoFID 2021.
Phytochemical data: USDA Flavonoid Database Release 3.3 (2018) and published analytical literature as indicated on each compound.
All values are per 100g fresh weight unless stated.
% Daily Values based on EU Nutrient Reference Values (NRVs) per Regulation (EU) No 1169/2011.
Nutriofia is a research and information resource — nothing on this page constitutes medical advice.
Page generated from Nutriofia database · Argarth Collective Ltd · Company No. 16864945.