Citrus maxima (or Citrus grandis), (Common names: shaddock, pomelo, pummelo, pommelo, pamplemousse, or shaddok) is a natural (non-hybrid) citrus fruit, with the appearance of a big grapefruit, native to South and Southeast Asia.
Citrus maxima was originally called "shaddock" in English, after the captain of an East India Company ship who introduced it to Jamaica in 1696. Recently the word "pomelo" has become the more common name, although "pomelo" has historically been used for grapefruit. (The 1973 printing of the American Heritage Dictionary, for example, gives grapefruit as the only meaning of "pomelo".)
The etymology of the word "pomelo" is uncertain. It is thought to perhaps be an alteration of the Dutch pompelmoes (meaning Citrus maxima, although modern regional Dutch use may additionally refer to the yellow/white grapefruit, while the pink grapefruit may be called roze pompelmoes, and "pomelo" refers to Citrus maxima × Citrus × paradisi) or alternatively, perhaps an alteration of a compound of pome ("apple") + melon.
Citrus maxima is native to Southeast Asia where it is known under a wide variety of names. In large parts of South East Asia, it is a popular dessert, often eaten raw sprinkled with, or dipped in, a salt mixture. It is also eaten in salads and drinks.
Description and uses
It is usually pale green to yellow when ripe, with sweet white (or, more rarely, pink or red) flesh and very thick albedo (rind pith). It is a large citrus fruit, 15–25 centimetres (5.9–9.8 in) in diameter, usually weighing 1–2 kilograms (2.2–4.4 lb). Leaf petioles are distinctly winged.
The fruit tastes like a sweet, mild grapefruit (which is itself believed to be a hybrid of Citrus maxima and the orange), though the typical shaddock is much larger than the grapefruit. It has none, or very little, of the common grapefruit's bitterness, but the enveloping membranous material around the segments is bitter, considered inedible, and thus is usually discarded. The peel is sometimes used to make marmalade, can be candied, and is sometimes dipped in chocolate. In Brazil, the thick skin is often used for making a sweet conserve, while the middle[clarification needed] is discarded. Citrus maxima is usually grafted onto other citrus rootstocks but can be grown from seed, provided the seeds are not allowed to dry out before planting.
The fruit is said to have been introduced to Japan by a Cantonese captain in the An'ei era (1772–1781). There are two varieties: a sweet kind with white flesh and a sour kind with pinkish flesh, the latter more likely to be used as an altar decoration than actually eaten. Pomelos are often eaten in Asia during the mid-autumn festival or mooncake festival.
Main article: Grapefruit–drug interactions
Possible non-hybrid pummelos
The pomelo is one of the four original citrus species (the others being citron, mandarin, and papeda), from which the rest of cultivated citrus hybridized. In particular, the common orange and the grapefruit are assumed to be natural occurring hybrids between the pomelo and the mandarin, with the pomelo providing the bigger size and greater firmness.
The pomelo is also employed today in artificial breeding programs:
- The common sweet orange (Citrus × sinensis) is a pummelo × mandarin hybrid
- The bitter orange (Citrus × aurantium) is another pummelo × mandarin hybrid
- The tangelo is any hybrid between Citrus maxima and a tangerine. It generally has a thicker skin than a tangerine and is less sweet.
- 'K–Early' ('Sunrise Tangelo')
- Grapefruit is a pummelo backcross: pummelo × sweet orange (see above). The grapefruit is itself a parent to many hybrids:
- 'Minneola': Bowen grapefruit × Dancy tangerine
- 'Orlando' (formerly Take'): Bowen grapefruit × Dancy tangerine(pollen parent)
- 'Nova': Clementine × Orlando tangelo cross
- 'Seminole': Bowen grapefruit × Dancy tangerine
- 'Thornton': tangerine × grapefruit, unspecified
- 'Ugli': mandarine × grapefruit, probable (wild seedling)
- The Oroblanco and Melogold grapefruits are hybrids between Citrus maxima and the grapefruit.
- Mandelos: pummelo × mandarine (Citrus maxima).
- Hyuganatsu may be a pumelo hybrid
- "Shaddock". Britannica Online. Encyclopedia Britannica, Inc. Retrieved 13 January 2013.
- American Heritage Dictionary, 1973.
- “pomelo, n.” listed in the Oxford English Dictionary [Draft revision; June 2008]
- "Pummelo". Hort.purdue.edu. Retrieved 2012-01-07.
- Growing the granddaddy of grapefruit, SFGate.com, December 25, 2004
- Grapefruit "Grapefruit" Check
|url=scheme (help). Hort.purdue.edu. Retrieved 2012-05-12.
- "阿久根市： 観光・特産品（ボンタン）". City.akune.kagoshima.jp. Retrieved 2012-01-07.
- Grapefruit–medication interactions: Forbidden fruit or avoidable consequences? CMAJ March 5, 2013 vol. 185 no. 4 First published November 26, 2012, doi: 10.1503/cmaj.120951 David G. Bailey, George Dresser, J. Malcolm O. Arnold, 
- Morton, J. 1987. Tangelo. p. 158–160. In: Fruits of warm climates. Julia F. Morton, Miami, FL. http://www.hort.purdue.edu/newcrop/morton/tangelo.html
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