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Grapefruit

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(Redirected fromDuncan grapefruit)
Citrus fruit

This article is about the fruit. For other uses, seeGrapefruit (disambiguation).Not to be confused withGrape.

Grapefruit
Scientific classificationEdit this classification
Kingdom:Plantae
Clade:Tracheophytes
Clade:Angiosperms
Clade:Eudicots
Clade:Rosids
Order:Sapindales
Family:Rutaceae
Genus:Citrus
Species:
C. × paradisi
Binomial name
Citrus× paradisi
Macfad.

Thegrapefruit (Citrus ×paradisi) is a subtropicalcitrus tree known for its relatively large,sour to semi-sweet, somewhatbitter fruit.[1] The flesh of the fruit is segmented and varies in color from pale yellow to dark red.

Grapefruits originated inBarbados in the 18th century. They are a citrushybrid that was created through an accidental cross between thesweet orange (C. ×sinensis) and thepomelo (C. maxima), both of which were introduced to the Caribbean from Asia in the 17th century.[2] It has also been called the 'forbidden fruit'.[1] In the past it was called thepomelo,[3] but that term is now mostly used as the common name forCitrus maxima.[4]

Grapefruit–drug interactions are common, as the juice containsfuranocoumarins that interfere with the metabolism of many drugs. This can prolong and intensify the effects of those drugs, leading to multiple side-effects such as abnormal heart rhythms, bleeding inside the stomach, low blood pressure, difficulty breathing, and dizziness.

Description

[edit]
Grapefruit growing in the grape-like clusters from which their name may derive

The evergreen grapefruit trees usually grow to around 4.5–6 m (15–20 ft) tall, although they may reach 13.7 m (45 ft).[1] The leaves are up to 15 cm (6 in) long, thin, glossy, and dark green. They produce 5 cm (2 in) white flowers with four or five petals. The fruit is yellow-orange skinned and generally anoblate spheroid in shape; it ranges in diameter from 10 to 15 cm (4 to 6 in). Its flesh is segmented and acidic, varying in color depending on thecultivars, which include white, pink, and red pulps of varying sweetness (generally, the redder varieties are the sweetest).[1]

Varieties

[edit]
"Star Ruby" redirects here. For star stone, seeAsterism (gemology).
"Red" grapefruit

White grapefruit varieties include Camulos, Cecily, Duncan, Frost Marsh, Genetic Dwarf Marsh, Hall, Jochimsen, Marsh seedy, Nicholson navel, Perlis, Reed Marsh, Tetraploid, Warren Marsh, and Whitney Marsh.[5]

Red or pink grapefruit varieties include Flame, Foster Pink, Henderson Ruby, Hudson Foster, Marsh Pink, Ray Ruby, Redblush, Rio Red, Shambar, and Star Ruby.[6]

The 1929 'Ruby Red' (or 'Redblush') patent was associated with real commercial success, which came after the discovery of a red grapefruit growing on a pink variety.[1] TheTexas Legislature designated this variety the official "State Fruit of Texas" in 1993.[7]

Usingradiation to trigger mutations, new varieties were developed to retain the red tones that typically faded to pink.[8] The 'Rio Red' variety is a 1984 registered Texas grapefruit with registered trademarksRio Star andRuby-Sweet, also sometimes promoted asReddest andTexas Choice. The 'Rio Red' is amutation-bred variety that was developed by treatment of bud sticks withthermal neutrons. Its improved attributes of mutant variety are fruit and juice color, deeper red, and wide adaptation.[9]

The 'Star Ruby' is the darkest of the red varieties.[1] Developed from an irradiated 'Hudson' grapefruit ('Hudson' being a limb sport of 'Foster', itself a limb sport of the 'Walters'),[10] it has found limited commercial success because it is more difficult to grow than other varieties.[11][12]

As food

[edit]

Nutrition

[edit]
Grapefruit, raw, white, all areas
Nutritional value per 100 g (3.5 oz)
Energy138 kJ (33 kcal)
8.41 g
Sugars7.31 g
Dietary fiber1.1 g
0.10 g
0.8 g
Vitamins and minerals
VitaminsQuantity
Thiamine (B1)
3%
0.037 mg
Riboflavin (B2)
2%
0.020 mg
Niacin (B3)
2%
0.269 mg
Pantothenic acid (B5)
6%
0.283 mg
Vitamin B6
3%
0.043 mg
Folate (B9)
3%
10 μg
Choline
1%
7.7 mg
Vitamin C
37%
33.3 mg
Vitamin E
1%
0.13 mg
MineralsQuantity
Calcium
1%
12 mg
Iron
0%
0.06 mg
Magnesium
2%
9 mg
Manganese
1%
0.013 mg
Phosphorus
1%
8 mg
Potassium
5%
148 mg
Zinc
1%
0.07 mg
Other constituentsQuantity
Water90.48 g

Percentages estimated usingUS recommendations for adults,[13] except for potassium, which is estimated based on expert recommendation fromthe National Academies.[14]

Raw white grapefruit is 90% water, 8% carbohydrates, 1% protein, and contains negligible fat (table). In a reference amount of 100 grams (3+12 ounces), raw grapefruit provides 138 kilojoules (33 kilocalories) offood energy and is a rich source ofvitamin C (37% of theDaily Value), with no othermicronutrients in significant amounts (table).

Culinary

[edit]

Like other citrus fruits, grapefruits are sour because of theircitric acid content; grapefruit juice contains about half the citric acid content of lemon juice, and nearly 50% more than orange juice.[15] In Costa Rica, especially inAtenas, grapefruit are often cooked with sugar to balance their sourness, rendering them assweets; or they are stuffed withdulce de leche as adessert.[16] In Haiti, grapefruit is used primarily for its juice (jus de Chadèque), but also is used to make jam (confiture de Chadèque).[17][18]

Grapefruit varieties are differentiated by the flesh color of fruit they produce. Common varieties are yellow and pink pulp colors. Flavors range from highly acidic and somewhat sour to sweet and tart, resulting from composition of sugars (mainlysucrose), organic acids (mainly citric acid), andmonoterpenes andsesquiterpenes providing aromas.[19]Grapefruit mercaptan, asulfur-containingterpene, is one of thearoma compounds influencing the taste and odor of grapefruit, compared with other citrus fruits.[20]

  • Caramelized grapefruit
    Caramelized grapefruit
  • Roasted grapefruit chicken
    Roasted grapefruit chicken
  • Salmon tartar with spinach and red grapefruit
    Salmon tartar with spinach and red grapefruit
  • Greyhound cocktail, with gin and juice
    Greyhound cocktail, with gin and juice

Drug interactions

[edit]
Main article:Grapefruit–drug interactions
Grapefruit juice containsbergamottin, one of thefuranocoumarins which inhibit the metabolism of many drugs, causing multiple side-effects.[21]

Grapefruit andgrapefruit juiceinteract with many drugs, resulting in numerousadverse effects includingbone marrow suppression,nephrotoxicity,abnormal heart rhythm,rhabdomyolysis,hypotension,gastrointestinal bleeding,dizziness, andrespiratory depression, according to the drug involved.[21]

One interaction occurs from grapefruitfuranocoumarins, such asbergamottin and6',7'-dihydroxybergamottin, which occur in both flesh and peel. Furanocoumarins inhibit theCYP3A4enzyme (among others from thecytochrome P450 enzyme family responsible for metabolizing 90% of drugs).[22] The action of the CYP3A4 enzyme itself is to metabolize many medications.[23] If a drug's breakdown for removal is lessened, then the level of that drug in the blood may become and remain high, leading to adverse effects.[21] On the other hand, some drugs must be metabolized to become active, and inhibiting CYP3A4 may lead to reduced drug effects.[21]

Another effect is that grapefruit compounds may inhibit the absorption of drugs in the intestine. If a drug is not absorbed, then not enough of it is in the blood to have a therapeutic effect. Each affected drug has either a specific increase of effect or decrease.[24]

One whole grapefruit or a glass of 200 ml (7 US fl oz) of grapefruit juice is enough to cause drug overdose toxicity.[21] Typically, drugs that are incompatible with grapefruit are marked as such on the container orpackage insert.[21]

Production

[edit]
Production – 2022
CountryMillions oftonnes
 China5.2
 Vietnam1.1
 Mexico0.5
 South Africa0.4
 United States0.3
World9.8
Source:FAOSTAT of theUnited Nations[25]

In 2022, world production of grapefruits (combined withpomelos) was 9.8 milliontonnes, led by China with 53% of the world total withVietnam as a secondary producer (table).

Pests and diseases

[edit]

Grapefruits are hosts for fruit flies (familyTephritidae) such asA. suspensa, which lay their eggs in overripe or spoiled grapefruits, sometimes causing serious damage in plantations in the Americas.[26] In sub-Saharan Africa, the Citrus swallowtail,Papilio demodocus, is a minor pest ofCitrus plantations.[27] Grapefruits are subject to several diseases ofCitrus trees, includingcitrus tristeza virus,citrus canker (caused by a bacterium,Xanthomonas), and thevector-transmittedcitrus greening disease, where the vector is apsyllid bug, and the pathogen is a bacterium,Liberibacter.[28]

History

[edit]
Further information:Citrus taxonomy
The grapefruit, like many cultivatedCitrus species, is a hybrid, in its case of thesweet orange andpomelo.[29]

Grapefruit originated as a natural hybrid.[30] One ancestor of the grapefruit was the Jamaican sweet orange (Citrus sinensis), itself an ancient hybrid of Asian origin; the other was the Indonesianpomelo (C. maxima).[1] The pomelo was the female ancestor; the sweet orange, itself a hybrid, was the male.[29] BothC. sinensis andC. maxima were present in the West Indies by 1692. One story of the fruit's origin is that a 17th-century trader named 'Captain Shaddock'[1][31] brought pomelo seeds to Jamaica and bred the first fruit, which were then calledshaddocks.[32] The grapefruit then probably originated as a naturally occurring hybrid between the two plants some time after they had been introduced there.[1][2]

Kimball Chase Atwood founded the Atwood Grapefruit Company in the late 19th century. It became the largest grapefruit grove in the world.[33]

A hybrid fruit, calledforbidden fruit, was first documented in 1750 (along with 14 other citrus fruits including the guiney orange) by a Welshman, the Rev. Griffith Hughes, in hisThe Natural History of Barbados.[1] However, Hughes's forbidden fruit may have beena plant distinct from grapefruit although still closely related to it.[34]

In 1814, the British naturalist and plantation ownerJohn Lunan published the termgrapefruit to describe a similar Jamaican citrus plant.[32] Lunan reported that the name was due to its similarity in taste to the grape (Vitis vinifera).[35] An alternative explanation is that this name may allude to clusters of the fruit on the tree, which often appear similar to bunches of grapes.[36][37]

In 1830, the Jamaican version of the plant was given the botanical nameCitrus paradisi by the Scottish physician and botanistJames Macfadyen. Macfadyen identified two varieties – one calledforbidden fruit, the otherBarbadoes Grape Fruit. Macfadyen distinguished between the two plants by fruit shape with the Barbados grapefruit being piriform (pear shaped) while the forbidden fruit was "maliformis".[38] Macfadyen's and Hughes's descriptions differ, so it is not clear that the two reports are describing the same plant. It has been suggested that Hughes's golden orange may actually have been a grapefruit, while his forbidden fruit was a different variety that may since have been lost.[31] A citrus calledforbidden fruit orshaddette has been discovered inSaint Lucia; it may be the plant described by Hughes and Macfadyen.[34]

The namegrape-fruit was used during the 19th century to refer to pomelos.[36] It was brought to Florida by the French businessman CountOdet Philippe in 1823, in what is now known asSafety Harbor.[1] Further crosses have produced thetangelo (1905), theMinneola tangelo (1931), and theoroblanco (1984). Its true origins were not determined until the 1940s, at which point its official name was altered toCitrus ×paradisi, the× identifying it as a hybrid.[39] An early pioneer in the American citrus industry was Kimball C. Atwood, a wealthy entrepreneur who founded the Atwood Grapefruit Company in the late 19th century. The Atwood Grove became the largest grapefruit grove in the world, with a yearly output of 80,000 boxes of fruit.[33] There, pink grapefruit was discovered in 1906.[1]

See also

[edit]

References

[edit]
  1. ^abcdefghijklMorton, Julia Frances (1987).Grapefruit,Citrus paradisi, In: Fruits of Warm Climates. NewCROP, New Crop Resource Online Program, Center for New Crops and Plant Products, Department of Horticulture and Landscape Architecture,Purdue University. pp. 152–158.ISBN 978-0-9610184-1-2.OCLC 16947184.Archived from the original on 2000-10-06. Retrieved2003-03-28.
  2. ^abCarrington, Sean; Fraser, Henry C. (2003). "Grapefruit".A~Z of Barbados Heritage. Macmillan Caribbean. pp. 90–91.ISBN 978-0-333-92068-8.One of many citrus species grown in Barbados. This fruit is believed to have originated in Barbados as a natural cross between sweet orange (C. sinesis) and pomelo (C. grandis), both of which originated in Asia and were introduced by Europeans in the 17th century. The grapefruit first appeared as an illustration entitled 'The Forbidden Fruit Tree' inThe Natural History of Barbados (1750) by Rev. Griffith Hughes. This accords with the scientific name, which literally is 'citrus of paradise'. The fruit seems to have been fairly commonly available around that time, sinceGeorge Washington in his Barbados Journal (1750–1751) mentions 'the Forbidden Fruit' as one of the local fruit available at a dinner party he attended. The plant was later described in the 1837Flora of Jamaica as the Barbados Grapefruit. The historical arguments and experimental work on leaf enzymes and oils from possible parents all support a Barbadian origin for the fruit.
  3. ^TheAmerican Heritage Dictionary of the English Language (1973) defines "pomelo" simply as "The grapefruit".
  4. ^Li, Xiaomeng; Xie, R.; Lu, Z.; Zhou, Z. (July 2010)."The Origin of Cultivated Citrus as Inferred from Internal Transcribed Spacer and Chloroplast DNA Sequence and Amplified Fragment Length Polymorphism Fingerprints".Journal of the American Society for Horticultural Science.135 (4): 341.doi:10.21273/JASHS.135.4.341.
  5. ^"White grapefruits". University of California Riverside. Retrieved31 December 2024.
  6. ^"Red/Pink grapefruits". University of California Riverside. Retrieved31 December 2024.
  7. ^Hatch, Rosie, ed. (2022).Texas Almanac 2022-2023. Austin, Texas: Texas State Historical Association. p. 21.ISBN 978-1-62511066-4.
  8. ^Broad, William J. (28 August 2007)."Useful Mutants, Bred With Radiation".The New York Times.Archived from the original on 1 February 2017. Retrieved22 February 2017.
  9. ^"MVD".mvgs.iaea.org.Archived from the original on 2014-03-19. Retrieved2017-03-30.
  10. ^Ahloowalia, B.S.; Maluszynski, M.; Nichterlein, K. (2004). "Global impact of mutation-derived varieties".Euphytica.135 (2):187–204.doi:10.1023/B:EUPH.0000014914.85465.4f.S2CID 34494057.
  11. ^Sauls, Julian W. (1998)."Home fruit Production-Grapefruit".Archived from the original on 2013-07-30. Retrieved2013-07-22.
  12. ^"Star Ruby grapefruit".Citrus Variety Collection.Archived from the original on 2013-06-19. Retrieved2013-07-22.
  13. ^United States Food and Drug Administration (2024)."Daily Value on the Nutrition and Supplement Facts Labels".FDA.Archived from the original on 2024-03-27. Retrieved2024-03-28.
  14. ^"TABLE 4-7 Comparison of Potassium Adequate Intakes Established in This Report to Potassium Adequate Intakes Established in the 2005 DRI Report". p. 120. In:Stallings, Virginia A.; Harrison, Meghan; Oria, Maria, eds. (2019). "Potassium: Dietary Reference Intakes for Adequacy".Dietary Reference Intakes for Sodium and Potassium. pp. 101–124.doi:10.17226/25353.ISBN 978-0-309-48834-1.PMID 30844154.NCBI NBK545428.
  15. ^Penniston, Kristina L.; Nakada, Stephen Y.; Holmes, Ross P.; Assimos, Dean G. (2008)."Quantitative Assessment of Citric Acid in Lemon Juice, Lime Juice, and Commercially-Available Fruit Juice Products".Journal of Endourology.22 (3):567–570.doi:10.1089/end.2007.0304.PMC 2637791.PMID 18290732.
  16. ^Ben Box, ed. (1993). "Costa Rica - The Meseta Central".1994 Mexico & Central America Handbook. Sarah Cameron, Sebastian Ballard (4 ed.). Trade and Travel Publications. p. 682.ISBN 978-0900751462.
  17. ^Monrose, Gregory Salomon (ed.)."Standardisation d'une formulation de confiture de chadèque et évaluation des paramètres physico-chimiques, microbiologiques et sensoriels" [Standardization of a chadek jam formulation and evaluation of physicochemical, microbiological and sensory parameters] (in French). Université d'Etat d'Haiti (UEH / FAMV) - Ingenieur Agronome 2009.Archived from the original on 7 June 2017. Retrieved5 June 2017 – via Memoire Online.
  18. ^Bidault, Blandine; Gattegno, Isabelle, eds. (1984).Le point sur la transformation des fruits tropicaux [Update on the processing of tropical fruits] (in French). Paris: Groupe de recherche et d'echanges technologiques (GRET). p. 46.
  19. ^Zheng, Huiwen; Zhang, Qiuyun; Quan, Junping; Zheng, Qiao; Xi, Wanpeng (2016). "Determination of sugars, organic acids, aroma components, and carotenoids in grapefruit pulps".Food Chemistry.205:112–121.doi:10.1016/j.foodchem.2016.03.007.PMID 27006221.S2CID 41172984.
  20. ^Buettner, A.; Schieberle, P. (1999). "Characterization of the Most Odor-Active Volatiles in Fresh, Hand-Squeezed Juice of Grapefruit (Citrus paradisi Macfayden)".J. Agric. Food Chem.47 (12):5189–5193.Bibcode:1999JAFC...47.5189B.doi:10.1021/jf990071l.PMID 10606593.
  21. ^abcdefBailey, D. G.; Dresser, G.; Arnold, J. M. O. (2012)."Grapefruit-medication interactions: Forbidden fruit or avoidable consequences?".Canadian Medical Association Journal.185 (4):309–316.doi:10.1503/cmaj.120951.PMC 3589309.PMID 23184849.
  22. ^Kakar, S.M.; Paine, M.F.; Stewart, P.W.; Watkins, P.B. (2004). "6',7'-Dihydroxybergamottin contributes to the grapefruit juice effect".Clinical Pharmacology and Therapeutics.75 (6):569–579.doi:10.1016/j.clpt.2004.02.007.hdl:2027.42/109773.PMID 15179411.
  23. ^Public Domain This article incorporatespublic domain material from"CYP3A4 cytochrome P450 family 3 subfamily A member 4 [Homo sapiens (human)]".Reference Sequence collection.National Center for Biotechnology Information.
  24. ^"How the "Don't take this medication with grapefruit juice" warning originated | Science-Based Medicine".sciencebasedmedicine.org. 2022-09-29.Archived from the original on 2022-11-04. Retrieved2022-11-04.
  25. ^"Grapefruit production in 2022, Crops/Regions/World list/Production Quantity (pick lists)". UN Food and Agriculture Organization, Corporate Statistical Database (FAOSTAT). 2024. Retrieved6 April 2024.
  26. ^van Whervin, L. Walter (March 1974). "Some Fruitflies (Tephritidae) in Jamaica".Pest Articles & News Summaries.20 (1):11–19.doi:10.1080/096708774094123313 (inactive 29 December 2024).{{cite journal}}: CS1 maint: DOI inactive as of December 2024 (link)
  27. ^Areces-Berazain, Fabiola (2022)."Papilio demodocus (citrus swallowtail)".CABI Compendium. CABI Compendium. CABI: 38757.doi:10.1079/cabicompendium.38757.
  28. ^Louzada, Eliezer S.; Ramadugu, Chandrika (2021)."Grapefruit: history, use, and breeding"(PDF).Horttechnology.31 (3):243–258.doi:10.21273/HORTTECH04679-20.
  29. ^abWu, Guohong Albert; Terol, Javier; Ibanez, Victoria; López-García, Antonio; Pérez-Román, Estela; et al. (2018)."Genomics of the origin and evolution ofCitrus".Nature.554 (7692):311–316.Bibcode:2018Natur.554..311W.doi:10.1038/nature25447.hdl:20.500.11939/5741.PMID 29414943. and Supplement
  30. ^Xiaomeng Li; Rangjin Xie; Zhenhua Lu; Zhiqin Zhou."Genetic origin of cultivated citrus determined: Researchers find evidence of origins of orange, lime, lemon, grapefruit, other citrus species".Science Daily.Archived from the original on 21 September 2017. Retrieved21 September 2017.
  31. ^abKumamoto, J.; Scora, R. W.; Lawton, H. W.; Clerx, W. A. (1987-01-01). "Mystery of the forbidden fruit: Historical epilogue on the origin of the grapefruit, Citrus paradisi (Rutaceae)".Economic Botany.41 (1):97–107.Bibcode:1987EcBot..41...97K.doi:10.1007/BF02859356.S2CID 42178548.
  32. ^abGrapefruit: a fruit with a bit of a complex inArt Culinaire (Winter, 2007)
  33. ^ab"Manatee County a big part of citrus history". Herald-Tribune. 2004-08-16.Archived from the original on 2012-10-12. Retrieved2011-12-17.
  34. ^abBowman, Kim D.; Gmitter, Frederick Jr. (April 1990)."Forbidden Fruit (Citrus sp., Rutaceae) Rediscovered in Saint Lucia".Economic Botany.44 (2):165–173.Bibcode:1990EcBot..44..165B.doi:10.1007/BF02860484.JSTOR 4255226.S2CID 33098910.Archived from the original on 2022-04-11. Retrieved2022-04-11.
  35. ^Lunan, John (1814).Hortus Jamaicensis. Jamaica: St. Iago de la Vega Gazette. pp. 171–173.Archived from the original on 27 July 2020. Retrieved24 December 2020.
  36. ^abCalifornia (1895)."Report of the Secretary–the pomelo".Appendix to the Journals of the Senate and Assembly of the twenty-first Session of the Legislature of the State of California. Vol. V. Sacramento, California: Legislature of the State of California. p. 65.Archived from the original on 2023-07-13. Retrieved2020-10-07.The pomelo is now marketed under the name 'grape-fruit', which is a misnomer. This is confusing and misleading. The name 'grape-fruit' was given to this fruit in Florida, as it hangs on trees in clusters resembling the grape, but has no relation to it whatever. Growers and shippers should drop the name 'grape-fruit' and apply to it the namepomelo, which is popular, and botanically correct.
  37. ^"How did the grapefruit get its name?".Library of Congress. Everyday Mysteries.Archived from the original on November 27, 2020. RetrievedJanuary 26, 2021.
  38. ^Macfadyen, James (1830). "Some remarks on the species of genusCitrus which are cultivated in Jamaica".Botanical Miscellanea (1):295–304.
  39. ^University of Florida: IFAS Extension; The Grapefruit."Fact Sheet"(PDF). Archived fromthe original(PDF) on 2007-06-28.

External links

[edit]
Truespecies
Majorhybrids
True and hybrid
cultivars
Citrons
Mandarin oranges
Papedas
Pomelos
Kumquats group
Kumquat species
Kumquat hybrids
(×Citrofortunella)
Australian
and Papuan
wild limes group
Eromocitrus
(former genera)
Microcitrus
(former genera)
Clymenia
(former genera)
Oxanthera
(former genera)
Related genera
(perhaps
properlyCitrus)
Drinks
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Diseases
Citrus botanists
Related topics
Citrus paradisi
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