Blood Orange
Food · Fruit · Food, Typed Supps
Blood oranges look different because of a special red pigment — not because they have way more vitamin C than regular oranges.
Stage by stage
- Release (Mouth): Chewing ruptures the fruit's juice vesicles, releasing vitamin C, natural sugars, potassium, and red anthocyanin pigments.
- Breakdown (Stomach): Gastric acid and churning further break down fiber and cell walls to free nutrients for absorption, while ascorbic acid and anthocyanins remain largely stable in the acidic environment.
- Absorption (Small Intestine): The small intestine actively absorbs vitamin C via dedicated transporters and takes up a smaller share of anthocyanins, while unabsorbed fiber moves on to the colon.
- Circulation (Bloodstream): Circulating vitamin C supports immune function and collagen synthesis, while anthocyanins and their metabolites contribute a short-lived boost to blood antioxidant activity.
Timing
Blood oranges can be eaten any time, with or without food, though pairing them with iron-rich plant foods can boost non-heme iron absorption.
Time to effect
- Hours: Blood levels of vitamin C rise within 1-2 hours of eating a blood orange and typically peak around 2-3 hours after ingestion.
Allergens
None of the fourteen major allergens. Derived from what this food is, not from a product label.
Eating patterns
Fits: Vegan, Vegetarian, Pescatarian, Halal, Kosher, Low-FODMAP, Gluten-free. Depends on the product: Keto.
In season
December to March in the northern hemisphere, June to September in the southern.
Satiety
205 on the satiety index, where white bread is 100 — very high. Modelled from the Holt et al. (1995) measurements.
Environmental footprint
0.4 kg CO2e and 83 litres of freshwater per kg, matched to "Citrus fruit" in Poore & Nemecek (2018), Science 360.
Cost band
Cheap — roughly £2 per kg, as a band midpoint rather than a price.
Key nutrients
Nutrition per 100g
- Calories: 52
- Protein: 0.7g
- Carbohydrate: 13.6g
- of which sugars: 14g
- Fat: 0g
- of which saturated: 0g
- Fibre: 3.6g
- Sodium: 0mg
Food vs. supplement
A medium blood orange provides about 70 mg of vitamin C plus fiber, potassium, and anthocyanin antioxidants that isolated vitamin C supplements lack entirely.
Kitchen tip
Eat blood oranges fresh and peeled — segments hold up well in salads, but avoid prolonged cooking or long storage, which gradually degrades their vitamin C content.
Common myth
"Blood oranges are a nutritional 'super' upgrade over regular oranges because their red color means they're packed with way more vitamin C." In reality: The crimson flesh comes from anthocyanins, a pigment virtually absent in other orange varieties, not from a vitamin C surplus — blood oranges' vitamin C content, roughly 70 mg per medium fruit, is comparable to standard navel or Valencia oranges.
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