Clementine

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A clementine (Citrus × clementina) is a tangor, a citrus fruit hybrid between a willowleaf mandarin orange (C. × deliciosa) and a sweet orange (C. × sinensis),[1][2][3] named in honor of Clément Rodier, a French missionary who first discovered and propagated the cultivar in Algeria.[4] The exterior is a deep orange colour with a smooth, glossy appearance. Clementines can be separated into 7 to 14 segments. Similar to tangerines, they tend to be easy to peel. They are typically juicy and sweet, with less acid than oranges.[4] Their oils, like other citrus fruits, contain mostly limonene as well as myrcene, linalool, α-pinene and many complex aromatics.[5]

They are sometimes sold under the name Easy-peelers.[6][7]

History

Italian cultivar, Clementine del golfo di Taranto
The Clementine Mural painting in Puisserguier France, representing Father Abram, founder of the Misserghin orphanage where the 1st citrus clementina was selected by brother Clement, a map of the different locations mentioned, and the citrus flowers, whole smooth fruit and some of its easy to peel separated sections.
Clementine Mural in Puisserguier France, celebrating Father Abram, founder of the Misserghin orphanage where the 1st citrus clementina was selected

The clementine is a spontaneous citrus hybrid that arose in the late 19th century in Misserghin, Algeria, in the garden of the orphanage of the French missionary brother Clément Rodier, for whom it would be formally named in 1902.[8][9][10] Some sources have attributed an earlier origin for the hybrid, pointing to similar fruit native to the provinces of Guangxi and Guangdong in present-day China,[11] but these are likely distinct mandarin hybrids,[12] and genomic analysis of the clementine has shown it to have arisen from a cross between a sweet orange (Citrus × sinensis) and the Mediterranean willowleaf mandarin (Citrus × deliciosa).[1][2]

There are three types of clementines: seedless clementines, clementines (maximum of 10 seeds), and Monreal (more than 10 seeds). Clementines resemble other citrus varieties, such as the satsuma and tangerines.[13]

Cultivation

Clementines differ from other citrus in having lower heat requirements, which means the tolerance to fruit maturity and sensitivity to unfavorable conditions during the flowering and fruit-setting period is higher. However, in regions of high total heat, the Clementine bears fruit early—only slightly later than satsuma mandarins. These regions, such as North Africa, Mediterranean basin, and California, also favor maximizing the Clementine size and quality.[14]{{Page needed|date=March 2018} It was introduced into Californian commercial agriculture in 1914, though it was grown at the Citrus Research Center (now part of the University of California, Riverside) as early as 1909.[14] Clementines lose their desirable seedless characteristic when they are cross-pollinated with other fruit. In 2006, to prevent this, growers—such as Paramount Citrus in California—threatened to sue local beekeepers to keep bees away from their crops.[15]

Types

Seedless clementine, unpeeled and peeled
  • Sweetclems — are typically grown in Spain and northern Africa. Unlike other Clementine varieties, they usually have 10 slices. They are specialised to be easy to peel. They have a sweet taste, as suggested by their name, but it is not overbearing and quite mild.[16] The sweetclem has several other brand names, and can also be referred to as an easy-peeler, a clemengold, and a clemcott, amongst others.[17]

Varieties

Spanish clementine, possibly the Fina cultivar
  • Algerian, the original Rodier cultivar.[18]
  • Fina, a Spanish cultivar originally grown on a bitter orange rootstock that gave it superb flavor, but due to disease vulnerability is now grown on a broader range of rootstocks, affecting the flavor profile.[18]
  • Clemenules or Nules – A popular, seedless, easy to peel clementine with a very pleasing sweet flavor. A mutation of the Fina variety, Nules is the most widely planted clementine in Spain, where it matures from mid-November to mid to late-January. Also widely planted in California, where it matures from October to December.[19] It produces seedless fruit that is larger than the Fina, but less sweet.[18]
  • Clementine del Golfo di Taranto, a (practically) seedless Italian cultivar given Protected geographical indication (PGI) status by the European Union, produced around the Gulf of Taranto. They have a sweet flavour and an intense aroma.[20]
  • Clementine di Calabria, another Italian PGI variety, grown in the Calabria region.[21]
Production of clementines, tangerines, mandarins and satsumas* in 2016 (millions of tonnes)
 China 17.2
 Spain 7.9
 Turkey 1.3
 Morocco 1.1
 Egypt 1.0
 Brazil 1.0
World 37.8
*FAOSTAT of the United Nations, which groups these fruits together in their data[22]

Nutrition

Clementines
Nutritional value per 100 g (3.5 oz)
Energy198 kJ (47 kcal)
12.02 g
Sugars9.18 g
Dietary fiber1.7 g
0.15 g
0.85 g
VitaminsQuantity %DV
Thiamine (B1)
7%
0.086 mg
Riboflavin (B2)
3%
0.030 mg
Niacin (B3)
4%
0.636 mg
Pantothenic acid (B5)
3%
0.151 mg
Vitamin B6
6%
0.075 mg
Folate (B9)
6%
24 μg
Choline
3%
14 mg
Vitamin C
59%
48.8 mg
Vitamin E
1%
0.20 mg
MineralsQuantity %DV
Calcium
3%
30 mg
Copper
2%
0.043 mg
Iron
1%
0.14 mg
Magnesium
3%
10 mg
Manganese
1%
0.023 mg
Phosphorus
3%
21 mg
Potassium
4%
177 mg
Selenium
0%
0.1 μg
Sodium
0%
1 mg
Zinc
1%
0.06 mg
Other constituentsQuantity
Water86.58 g

Entry in USDA Database
Percentages are roughly approximated using US recommendations for adults.
Source: USDA Nutrient Database


Potential drug interactions

A 2017 study indicated that clementine phytochemicals may interact with drugs in a manner similar to those of grapefruit.[23] A follow-up study in 2019, however, has called these results into question.[24]

See also

  • Clementine cake
  • List of foods named after people
  • Apulian Cuisine
  • List of Italian products with protected designation of origin

References

  1. 1.0 1.1 Shimizu, Tokurou (2016). "Hybrid Origins of Citrus Varieties Inferred from DNA Marker Analysis of Nuclear and Organelle Genomes". PLOS ONE 11 (11). doi:10.1371/journal.pone.0166969. PMID 27902727. Bibcode2016PLoSO..1166969S. 
  2. 2.0 2.1 Wu, GA (2014). "Sequencing of diverse mandarin, pummelo and orange genomes reveals complex history of admixture during citrus domestication". Nature Biotechnology 32 (7): 656–662. doi:10.1038/nbt.2906. PMID 24908277. 
  3. Barkley, NA; Roose, ML; Krueger, RR; Federici, CT (2006). "Assessing genetic diversity and population structure in a citrus germplasm collection utilizing simple sequence repeat markers (SSRs)". Theoretical and Applied Genetics 112 (8): 1519–1531. doi:10.1007/s00122-006-0255-9. PMID 16699791. https://naldc-legacy.nal.usda.gov/naldc/download.xhtml?id=11065&content=PDF. Retrieved 2018-12-29. 
  4. 4.0 4.1 Edible: An Illustrated Guide to the World's Food Plants. National Geographic. 2008. p. 73. ISBN 978-1-4262-0372-5. https://books.google.com/books?id=HORIzBx17DYC&pg=PA73. 
  5. Ziegler, Herta (2007). Flavourings: production, composition, applications, regulations. Wiley, John & Sons, Incorporated. p. 203. ISBN 978-3-527-31406-5. https://books.google.com/books?id=wl0gUqvBOoUC&q=Flavourings%3A+production%2C+composition%2C+applications%2C+regulations&pg=PA203. 
  6. Ball, Nick (5 February 2015). "Easy-Peeler Citrus". https://goodfruitguide.co.uk/seasonal-fruit-topics/easy-peeler-citrus/. 
  7. "Jaffa Clementine Or Sweet Easy Peeler 600G" (in en). https://www.aomart.co.uk/product-page/jaffa-clementine-or-sweet-easy-peeler-600g. 
  8. Trabut, J. L. (1902). "L'hybridation des Citrus: une nouvelle tangérine "la Clémentine"". Revue Horticole 74: 232–234. https://www.biodiversitylibrary.org/page/49660436. 
  9. Bretó, M. P.; Ruiz, C.; Pina, J.A.; Asíns, M.J. (2001). "The Diversification of Citrus clementina Hort. ex Tan., a Vegetatively Propagated Crop Species". Molecular Phylogenetics and Evolution 21 (2): 285–293. doi:10.1006/mpev.2001.1008. PMID 11697922. 
  10. Laszlo, Pierre (2007). Citrus: a history. University of Chicago Press. pp. 23–24. https://archive.org/details/isbn_9780226470283. 
  11. Saunt, James (January 1, 2000). Citrus Varieties of the World (2nd ed.). Sinclair International Business Resources. ISBN 978-1-872960-01-2. 
  12. Nosowitz, Dan (23 February 2016). "Your Guide to Everyone's Favorite Winter Citrus: Clementines". Smithsonian Institution. https://www.smithsonianmag.com/arts-culture/winter-citrus-clementines-180958196. 
  13. "Clementines". https://www.fruitsinfo.com/clementines.htm. 
  14. 14.0 14.1 Hodgson, Richard Willard (1967). "Horticultural Varieties of Citrus". The Citrus Industry (Revised ed.). University of California, Riverside, Division of Agricultural Sciences. http://lib.ucr.edu/agnic/webber/Vol1/Chapter4.html#clementine. Retrieved February 14, 2009. 
  15. "Calif. Beekeepers Fear No-Fly Zones". KATU.com. Associated Press. December 2, 2006. https://katu.com/news/local/calif-beekeepers-fear-no-fly-zones-11-26-2015. 
  16. Escodo, Pierre. "Last months to enjoy Clemcott" (in en-US). https://www.eurofresh-distribution.com/news/last-months-to-enjoy-clemcott/. 
  17. Ball, Nick (2015-07-30). "What are Clementines, Mandarins, Satsumas and Tangerines?" (in en-GB). https://goodfruitguide.co.uk/seasonal-fruit-topics/p6532/. 
  18. 18.0 18.1 18.2 David Karp (2012-12-30). "Farmers Markets: How to be choosy with clementines" (in en-US). Los Angeles Times. https://www.latimes.com/food/la-fo-market-news-online-20121130-story.html. 
  19. "Nules clementine". College of Natural and Agricultural Sciences, University of California Riverside. https://citrusvariety.ucr.edu/citrus/nules.html. 
  20. "Clementine del Golfo di Taranto PGI". https://www.qualigeo.eu/en/prodotto-qualigeo/clementine-del-golfo-di-taranto-igp/. 
  21. Hicham Benabdelkamel; Leonardo Di Donna; Fabio Mazzotti; Attilio Naccarato; Giovanni Sindona; Antonio Tagarelli; Domenico Taverna (2012). "Authenticity of PGI "Clementine of Calabria" by Multielement Fingerprint". J. Agric. Food Chem. 60 (14): 3717–3726. doi:10.1021/jf2050075. PMID 22458691. https://www.researchgate.net/publication/223994935. 
  22. "Clementine production* in 2016, Crops/Regions/World list/Production Quantity (pick lists)". UN Food and Agriculture Organization, Corporate Statistical Database (FAOSTAT). 2017. http://www.fao.org/faostat/en/#data/QC. 
  23. Theile, Dirk; Hohmann, Nicolas; Kiemel, Dominik; Gattuso, Giuseppe; Barreca, Davide; Mikus, Gerd; Haefeli, Walter Emil; Schwenger, Vedat et al. (15 January 2017). "Clementine juice has the potential for drug interactions – In vitro comparison with grapefruit and mandarin juice". European Journal of Pharmaceutical Sciences 97: 247–256. doi:10.1016/j.ejps.2016.11.021. PMID 27890698. 
  24. Hohmann, Nicolas; Mikus, Gerd; Haefeli, Walter Emil; Schwenger, Vedat; Gattuso, Giuseppe; Barreca, Davide; Weiss, Johanna (2019-05-15). "A follow-up report on potential drug interactions with clementines: Two single case experiments show no effect on CYP3A-dependent midazolam clearance" (in en). European Journal of Pharmaceutical Sciences 133: 54–58. doi:10.1016/j.ejps.2019.03.013. ISSN 0928-0987. https://www.sciencedirect.com/science/article/pii/S0928098719301162. 

Wikidata ☰ Q460517 entry




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