White grapefruit juice, canned or bottled and unsweetened, is juice from pale-fleshed grapefruit without added sugar. It retains useful vitamin C but loses the fibre of the whole fruit, and pasteurisation and storage reduce vitamin C compared with fresh juice.
Canning and bottling involve heat pasteurisation and long storage, which reduces vitamin C; juicing also removes the fibre of the whole fruit. Grapefruit juice can interact with certain medications.
Where Grapefruit juice, white, canned or bottled, unsweetened Stands Out
Macronutrients per 100g
Glycemic Index & Load
Low GI food — causes a slow, steady rise in blood sugar. Ideal for sustained energy, blood glucose control, and reducing insulin demand.
Glycemic Load (GL = GI × carbs ÷ 100) accounts for portion size. A low GL means this food has minimal real-world blood sugar impact.
Vitamins & Minerals
| Nutrient | Per 100g | % Daily Value* | Level |
|---|---|---|---|
| Potassium | 141 mg | 7% | |
| Vitamin C | 39.4 mg | 49% | |
| Phosphorus | 17.0 mg | 2% | |
| Calcium | 16.0 mg | 2% | |
| Folate | 12.0 µg | 6% | |
| Magnesium | 9.60 mg | 3% | |
| Pantothenic Acid (B5) | 0.280 mg | 5% | |
| Niacin (B3) | 0.253 mg | 2% | |
| Vitamin E (alpha-TE) | 0.220 mg | 2% | |
| Iron | 0.070 mg | 1% | |
| Thiamin (B1) | 0.062 mg | 6% | |
| Zinc | 0.040 mg | 0% | |
| Copper | 0.032 mg | 3% | |
| Riboflavin (B2) | 0.020 mg | 1% | |
| Manganese | 0.020 mg | 1% | |
| Vitamin B6 | 0.000 mg | 0% | |
| Fructose | 3.32 g | — | |
| Glucose (dextrose) | 3.22 g | — | |
| Sucrose | 1.17 g | — |
* % Daily Value is the proportion of an adult
EU Nutrient Reference Value (NRV) supplied by 100g of this food.
NRVs are the labelling standard — the same basis as the “%RI” figures printed on
food packaging — so these percentages are directly comparable with a shop label.
They are a single adult figure and do not vary by age or sex, which is why they
sometimes differ from UK dietary reference values: the NRV for vitamin C is 80mg
where the UK RNI is 40mg. When Nutriofia assesses your own intake in the
reports and trackers, it uses the age- and sex-specific UK values instead.
Fibre is shown without a percentage. Our fibre values use the UK
Englyst NSP method, while the published 30g daily goal is an AOAC figure — the two
are measured differently and a single percentage would mislead.
How we source and normalise our data →
Phytochemicals
Bioactive plant compounds — not classified as essential nutrients but associated with a range of health benefits.