Vegetables Alliums Phytochemical data available High fibre 🇬🇧 CoFID 2021 · 13-590
✦ Concentrated quercetin ✦ Prebiotic fibre ✦ Long shelf life ✦ Convenient

Dried onions are sliced or granulated onions with the water removed. Drying concentrates sugars, prebiotic fibres and quercetin per gram, but vitamin C is largely lost.

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Preparation note

Rehydrate in cooking liquid to recover flavour; the dried form shows how drying preserves fibre and minerals but reduces heat-sensitive vitamins.

Sources: CoFID 2021

Macronutrients per 100g

1,317
kJ
Energy
8.80
g
Protein
70.2
g
Carbs
9.60
g
Fibre
1.20
g
Fat
54.4
g
Sugars
0.25
g
Salt

Vitamins & Minerals

Nutrient Per 100g % Daily Value* Level
Potassium 1,209 mg 60%
Calcium 263 mg 33%
Phosphorus 201 mg 29%
Chloride 130 mg 16%
Magnesium 69.0 mg 18%
Vitamin C 33.0 mg 41%
Vitamin A (RAE) 7.33 µg 1%
Iron 2.63 mg 19%
Vitamin E (alpha-TE) 2.54 mg 21%
Zinc 1.20 mg 12%
Manganese 0.900 mg 45%
Niacin (B3) 0.800 mg 5%
Pantothenic Acid (B5) 0.700 mg 12%
Copper 0.350 mg 35%
Thiamin (B1) 0.230 mg 21%
Vitamin B12 0.000 µg 0%
Vitamin D 0.000 µg 0%
Iodine 16.0 µg 11%
Polyunsaturated fat (PUFA) 0.610 g —
Trans fat 0.000 g —
Glucose (dextrose) 20.2 g —
Sucrose 18.4 g —
Fructose 15.8 g —
Cholesterol 0.000 mg —
Beta-carotene 88.0 µg —
Retinol (vitamin A) 0.000 µg 0%

* % Daily Value based on EU Nutrient Reference Values (NRVs). — indicates no EU NRV established.

Phytochemicals

Flavonols
Quercetin
12.6 mg / 100g
USDA Flavonoid DB 3.3 (2018); NDB_No 99383
Flavonols
Kaempferol
4.10 mg / 100g
USDA Flavonoid DB 3.3 (2018); NDB_No 99383
Flavonols
Isorhamnetin
0.490 mg / 100g
USDA Flavonoid DB 3.3 (2018); NDB_No 99056
Flavonols
Myricetin
0.000 mg / 100g
USDA Flavonoid DB 3.3 (2018); NDB_No 99056
Flavones
Apigenin
0.000 mg / 100g
USDA Flavonoid DB 3.3 (2018); NDB_No 99056
Flavones
Luteolin
0.000 mg / 100g
USDA Flavonoid DB 3.3 (2018); NDB_No 99056
Anthocyanins
Cyanidin (total glycosides)
0.000 mg / 100g
USDA Flavonoid DB 3.3 (2018); NDB_No 99056
Why are some phytochemicals missing? Nutriofia tracks over 50 bioactive plant compounds — including allicin, betanin, glucosinolates, lignans, and polyphenols — but comprehensive measurement data simply doesn't exist yet for most foods. Unlike vitamins and minerals, phytochemical analysis is still an active area of food science research. When a compound doesn't appear here, it means no published measurement exists for this food, not that the food lacks it. We update our database as new data becomes available.
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.