Grapefruit
GRAPEFRUIT
Grapefruit (Citrus × paradisi) is distinguished by its concentration of ascorbic acid (37.0% of the Daily Value [DV] per 100 g). Pink and red cultivars are further characterized by a significant concentration of beta-carotene (12.0%) and the carotenoid lycopene (26.0%). The mineral profile exhibits a high concentration of boron (321.0% DV per 100 g), silicon (133.0%), and rubidium (63.0%), and contains substantial quantities of vanadium (10.0%) and cobalt (10.0%).
The nutritional matrix is rich in total phytosterols (31.0% DV) and mono- and disaccharides (13.0%), within which glucose serves as the primary sugar (20.0% DV). Starch is absent from the composition, while sucrose is present in significant quantities (2.0 g per 100 g).
The total purine base content per 100 g constitutes 6.7% of the daily allowance.
Grapefruit contains the flavanones naringin and naringenin, as well as the furanocoumarin bergapten, which significantly modulate estrogen metabolism. Disruption of these metabolic pathways is clinically associated with an increased risk of mammary neoplasia in women. Detailed toxicological and pharmacological analysis can be found on the page: “Grapefruit – a danger to women?“.
Calories per 100 g: 33 kcal
Water per 100 g: 90.48 g
Ash per 100 g: 0.33 g
Water per 100 g: 90.48 g
Ash per 100 g: 0.33 g
CHEMICAL COMPOSITION
Vitamins, macro- and microelements, nutrients per 100 g
VITAMINS
| Name | Content, mass fraction per 100 g of product | % of daily allowance | |
| in numbers | visually* | ||
| Vitamin B1 (thiamine) | 0.04 | 3 |  |
| Vitamin B2 (riboflavin) | 0.02 | 1 |  |
| Vitamin B5 (pantothenic acid) | 0.28 | 6 | |
| Vitamin B6 (pyridoxine) | 0.04 | 2 | |
| Vitamin B9 (folic acid) | 10.0 | 3 | |
| Vitamin B12 (cyanocobalamin) | 0.0 | 0 | |
| Vitamin C (ascorbic acid) | 33.3 mg | 37 |  |
| Vitamin E (alpha-tocopherol) | 0.13 mg | 1 | |
| Vitamin D (ergocalciferol) | 0.0 mcg | 0 | |
| Vitamin PP (nicotinic acid) | 0.39 mg | 2 | |
| Vitamin K (phylloquinone) | 0.0 | 0 | |
| Biotin | 1.0 | 2 | |
| Beta-carotene | 14.0-21.0 mcg (white) 552.0-686.0 mcg (pink) |
0.4% (white) 12% (pink) |
and  white pink |
| Alpha-carotene | 4.0-8.0 μg | 0.1 | |
| Lutein + zeaxanthin | 5.0-10.0 μg | 0.1 | |
| Beta-cryptoxanthin | 3.0-6.0 | 0.1 | |
| Lycopene | 0.0 mcg (white) 1135.0-1419.0 mcg (pink) |
0% (white) 26% (pink) |
and  white pink |
| Choline | 7.7 mg | 2 | |
| Methylmethionine sulfonium (vitamin U) | 0 | 0 | |
| Betaine trimethylglycine | 0.1 | 0.01 | |
* Full jug – 100% of the daily norm; empty – 0-1% of the daily norm.
MINERAL ELEMENTS
Macroelements
| Name | Content, mass fraction per 100 g of product | % of daily requirement | |
| in numbers | Visually | ||
| Potassium | 148.0-184.0 mg | 6.4 | |
| Calcium | 12.0-23.0 mg | 1.5 | |
| Silicon | 40.0 mg | 133 |  |
| Magnesium | 9.0 | 2 | |
| Sodium | 13.0 mg | 1 | |
| Sulfur | 9.0 mg | 1 | |
| Phosphorus | 8.0-18.0 mg | 1.6 | |
| Chlorine | 3.0 mg | 0.1 | |
Trace elements and ultra-trace elements
| Name | Content, mass fraction per 100 g of product | % of daily requirement | |
| in numbers | Visually | ||
| Aluminum | 110.0 μg | 0.3 | |
| Boron | 204.0-245.0 μg | 321 |  |
| Vanadium | 4.0 | 10 | |
| Iron | 0.08-0.19 mg | 0.9 | |
| Iodine | 2.0 | 1.3 | |
| Cobalt | 1.0 | 10 | |
| Lithium | 3.3 | 3.3 | |
| Manganese | 10.0-55.0 μg | 1.5 | |
| Copper | 30.0-51.0 μg | 4.2 | |
| Molybdenum | 6.0 | 8.6 | |
| Arsenic | 0.02 | 0.2 | |
| Nickel | 3.1 | 2.1 | |
| Tin | 3.0 | 0.2 | |
| Rubidium | 63.0 μg | 63 |  |
| Lead | 0.04 | 0.4 | |
| Selenium | 0.1-1.4 μg | 1.4 | |
| Strontium | 10.0 | 1.3 | |
| Thallium | 0.05 | 2.5 | |
| Fluorine | 17.0 μg | 0.4 | |
| Chromium | 0.1 | 0.2 | |
| Zinc | 45.0-100.0 mcg | 0.5 | |
PROTEINS AND AMINO ACIDS
| Name | Content, mass fraction per 100 g of product | % of daily requirement | |
| in numbers | Visually | ||
| Total protein content | 0.69 g | 1 | |
| Essential amino acid content | 0.14 g | 0.6 | |
| Content of replaceable amino acids | 0.52 | 0.9 | |
Essential amino acids
| Name of acid | Content, g per 100 g of product | % of daily requirement | |
| in numbers | Visually | ||
| Valine | 0.01 | 1 | |
| Histidine | 0.01 g | 1 | |
| Isoleucine | 0.01 g | 1 | |
| Leucine | 0.01 g | 0.2 | |
| Lysine | 0.02 | 1 | |
| Methionine | 0.01 g | 1 | |
| Threonine | 0.01 g | 1 | |
| Tryptophan | 0.01 g | 3 | |
| Phenylalanine | 0.05 g | 2 | |
Non-essential amino acids
| Acid name | Content, g per 100 g of product | % of daily requirement | |
| in numbers | Visually | ||
| Alanine | 0.02 | 0.3 | |
| Arginine | 0.08 g | 1.3 | |
| Aspartic acid | 0.12 | 1.0 | |
| Glycine | 0.01 g | 0.3 | |
| Glutamic acid | 0.18 | 1.3 | |
| Proline | 0.06 g | 1.3 | |
| Serine | 0.03 g | 0.4 | |
| Tyrosine | 0.01 g | 0.3 | |
| Cystine | 0.01 g | 0.6 | |
FATS AND FATTY ACIDS
| Name | Content, mass fraction per 100 g of product | % of daily allowance | |
| in numbers | Visually | ||
| Total fat content | 0.1 | 0.1 | |
| Unsaturated fatty acid content | 0.164 g | 0.4 | |
| Omega-3 unsaturated fatty acid content | 0.024 g | 2.4 | |
| Omega-6 unsaturated fatty acid content | 0.086 g | 0.9 | |
| Saturated fatty acid content | 0.076 g | 0.3 | |
Unsaturated fatty acids
| Acid name | Content, g per 100 g of product |
| Palmitoleic C 16:1 (omega-7) | 0.006 g |
| Oleic C 18:1 (omega-9) | 0.048 |
| Linoleic C 18:2 (omega-6) | 0.086 g |
| Linolenic C 18:3 (omega-3) | 0.024 |
| Stearidonic C 18:4 (omega-3) | 0.0 |
| Gadoleic C 20:1 (omega-11) | 0.0 |
| Arachidonic C 20:4 (omega-6) | 0.0 |
| Eicosapentaenoic C 20:5 (omega-3) | 0.0 |
| Erucic acid C 22:1 (omega-9) | 0.0 |
| Clupanoid C 22:5 (omega-3) | 0.0 |
| Docosahexaenoic C 22:6 (omega-3) | 0.0 |
| Nervon C 24:1 (omega-9) | 0.0 |
Saturated fatty acids
| Acid name | Content, g per 100 g of product |
| Lauric C 12:0 | 0.0 |
| Myristic C 14:0 | 0.0 |
| Palmitic acid C 16:0 | 0.067 g |
| Stearic acid C 18:0 | 0.009 g |
| Arachidic C 20:0 | 0.0 |
| Behenic C 22:0 | 0.0 |
| Lignoceric acid C 24:0 | 0.0 |
Sterols
| Name | Content, mass fraction per 100 g of product | % of daily allowance | |
| in numbers | Visually | ||
| Total phytosterols | 17.0 mg | 31 | |
| Campesterol | No data | ||
| Beta-sitosterol | No data | ||
| Stigmasterol | No data | ||
| Cholesterol | 0.0 mg | 0 | – |
CARBOHYDRATES
PURINE BASES
Units of measurement:
Medium fruit (peeled): 130.0 g
Standard cup: 250.0 g
Faceted glass: 200.0 g
Teaspoon: 7.0 g
Tablespoon: 20.0 g