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Citrullus colocynthis

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This is an old revision of this page, as edited by 50.196.22.146 (talk) at 21:10, 24 May 2018 (→References in religion: "gall" means bile.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

"Bitter-apple" redirects here. For the species of nightshade, see Soda apple.

Citrullus colocynthis
Citrullus colocynthis from Koehler's Medicinal-Plants (1887).
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Cucurbitales
Family:
Cucurbitaceae
Genus:
Citrullus
Species:
C. colocynthis
Binomial name
Citrullus colocynthis
Synonyms[1]
  • Citrullus colocynthoides Pangalo
  • Citrullus pseudocolocynthis M.Roem.
  • Colocynthis officinalis Schrad.
  • Colocynthis vulgaris Schrad.
  • Cucumis colocynthis L.

Citrullus colocynthis, with many common names including colocynth,[2] bitter apple,[2] bitter cucumber,[2] desert gourd,[citation needed] egusi,[3] vine of Sodom,[2] or wild gourd,[2] is a desert viny plant native to the Mediterranean Basin and Asia, especially Turkey (especially in regions such as İzmir), and Nubia.

It resembles a common watermelon vine, but bears small, hard fruits with a bitter pulp. It originally bore the scientific name Colocynthis citrullus.

Origin, distribution, and ecology

C. colocynthis is a desert viny plant that grows in sandy, arid soils. It is native to the Mediterranean Basin and Asia, and is distributed among the west coast of northern Africa, eastward through the Sahara, Egypt until India, and reaches also the north coast of the Mediterranean and the Caspian Seas. It grows also in southern European countries as in Spain and on the islands of the Grecian archipelago. On the island of Cyprus, it is cultivated on a small scale; it has been an income source since the 14th century and is still exported today. It is an annual or a perennial plant (in wild) in Indian arid zones and has a great survival rate under extreme xeric conditions.[4] In fact, it can tolerate annual precipitation of 250 to 1500 mm and an annual temperature of 14.8 to 27.8 °C. It grows from sea level up to 1500 meters above sea level on sandy loam, subdesert soils, and sandy sea coasts with a pH range between 5.0 and 7.8.[5]

Characteristics and morphology

Roots and stems

The roots are large, fleshy, and perennial, leading to a high survival rate due to the long tap root. The vine-like stems spread in all directions for a few meters looking for something over which to climb. If present, shrubs and herbs are preferred and climbed by means of axiliary branching tendrils.[4]

Leaves

Very similar to watermelon, the leaves are palmate and angular with three to seven divided lobes.

Flowers

The flowers are yellow and solitary in the axes of leaves and are borne by yellow-greenish peduncles. Each has a subcampanulated five-lobed corolla and a five-parted calyx. They are monoecious, so the male (stamens) and the female reproductive parts (pistils and ovary) are borne in different flowers on the same plant. The male flowers’ calyx is shorter than the corolla. They have five stamens, four of which are coupled and one is single with monadelphous anther. The female flowers have three staminoids and a three-carpel ovary. The two sexes are distinguishable by observing the globular and hairy inferior ovary of the female flowers.[4]

A C. colocynthis female flower
Iranian C. colocynthis
Ripe fruit of C. colocynthis

Fruits

The fruit is smooth, spheric with a 5– to 10-cm-diameter and extremely bitter taste. The calyx englobe the yellow-green fruit which becomes marble (yellow stripes) at maturity. The mesocarp is filled with a soft, dry, and spongy white pulp, in which the seeds are embedded. Each of the three carpels bears six seeds. Each plant produces 15 to 30 fruits.[5]

Seeds

The seeds are grey and 5 mm long by 3 mm wide. They are edible but similarly bitter, nutty-flavored, and rich in fat and protein. They are eaten whole or used as an oilseed. The oil content of the seeds is 17–19% (w/w), consisting of 67–73% linoleic acid, 10–16% oleic acid, 5–8% stearic acid, and 9–12% palmitic acid. The oil yield is about 400 l/hectare.[6] In addition, the seeds contain a high amount of arginine, tryptophan, and the sulfur-containing amino acids.[7]

Cultivation

C. colocynthis, a perennial plant, can propagate both by generative and vegetative means. However, seed germination is poor due to the extreme xeric conditions, so vegetative propagation is more common and successful in nature. In the Indian arid zone, growth takes place between January and October, but the most favorable period for the vegetative growth is during summer, which coincides with the rainy season. Growth declines as soon as the rains and the temperature decrease and almost stops during the cold and dry months of December and January. Colocynth prefers sandy soils and is a good example of good water management which may be useful also on research to better understand how desert plants react to water stress.[8][9] To enhance production, an organic fertilizer can be applied.[10] Colocynth is also commonly cultivated together with cassava (intercropping) in Nigeria.

Colocynths in Adrar Desert (Mauritania).

Cultivated colocynth suffers of climatic stress and diseases such as cucumber mosaic virus, melon mosaic virus, Fusarium wilt, etc. as any other crop. To improve it, a relatively new protocol for regeneration has been developed with the aim of incorporating disease and stress resistance to increase yield potential and security avoiding interspecific hybridization barriers.[11]

Uses

C. colocynthis can be eaten or elaborated for further uses in medicine and as energy source, e.g. oilseed and biofuel. The characteristic small seed of the colocynth have been found in several early archeological sites in northern Africa and the Near East, specifically at Neolithic Armant, Nagada in Egypt; at sites dating from 3800 BC to Roman times in Libya; and the prepottery Neolithic levels of the Nahal Hemar caves in Israel.[12] Zohary and Hopf speculate, "these finds indicate that the wild colocynth was very probably used by humans prior to its domestication."[12]

Traditional medicine and research

Colocynth has been widely used in traditional medicine for centuries.[13] In premodern medicine, it was an ingredient in the electuary called confectio hamech, or diacatholicon, and other laxative pills.[14]

In Arabia the colocynth had numerous uses in traditional medicine, such as a laxative, diuretic, or for insect bites.[15] The powder of colocynth was sometimes used externally with aloes, unguents, or bandages.[14] Troches made of colocynth were called "troches of alhandal" used as an emetic.[14]

In traditional veterinary medicine, colocynth sap was used to treat skin eruptions in camels[15].

Culinary uses

The desert Bedouin are said to make a type of bread from the ground seeds. Some confusion exists between this species and the closely related watermelon (Citrullus lanatus (Thunb)), whose seeds may be used in much the same way. In particular, the name "egusi" may refer to either or both plants (or more generically to other cucurbits) in their capacity as seed crops, or for a soup made from these seeds and popular in West Africa. The seed flour is rich in micronutrients, and could therefore be used in food formulations especially in regions with low milk consumption, such as West Africa.[7]

Practical uses

The oil obtained from the seeds (47%) can be used for soap production.[5] The production is not very time- and energy-consuming due to the ability of colocynth to grow on poor soils with just a little moisture and organic fertilizer. The fruits are harvested still unripe by hand, the rind is removed by peeling and the inner pulp filled with seeds is dried in the sun or in ovens. The seeds yield is about 6.7-10 t/ha, which means that for an oil profit of 31-47%, oil yields may reach up to 3 t/ha.[5][16]

Oleic and linoleic acids isolated from C. colocynthis petroleum ether extracts show larvicidal activity against mosquitoes.[17]

References in religion

Judaism and Christianity

The colocynth’s characteristic bitter taste and dangerous properties seem to be consistent with the "wild gourd" mentioned in 2 Kings:

And one went out into the field to gather herbs, and found a wild vine, and gathered thereof wild gourds his lap full, and came and shred them into the pot of pottage: for they knew them not. So they poured out for the men to eat. And it came to pass, as they were eating of the pottage, that they cried out, and said, O thou man of God, there is death in the pot. And they could not eat thereof.

— Old Testament, 2 Kings 4:39–40 (KJV)

J.R.R. Tolkien used "colocynth" for the plant that sheltered Jonah in the draft for his translation of the book for the Jerusalem Bible. However, it was editorially changed and published as "castor-oil plant."[18]

Islam

It is reported from Abu Musa Al Ash'ari that Muhammad said:

The example of a believer who recites the Qur'an and acts on it, like a citron which tastes nice and smells nice. And the example of a believer who does not recite the Qur'an but acts on it, is like a date which tastes good but has no smell. And the example of a hypocrite who recites the Qur'an is like a Raihana (sweet basil) which smells good but tastes bitter. And the example of a hypocrite who does not recite the Quran is like a colocynth which tastes bitter and has a bad smell.

— Sahih al-Bukhari, 8:61:579

Sikhism

In the holy book of Sikhism, Sri Guru Granth Sahib, Guru Arjun Dev said:

ਪੇਖੰਦੜੋ ਕੀ ਭੁਲੁ ਤੁੰਮਾ ਦਿਸਮੁ ਸੋਹਣਾ ॥

pēkhandarō kī bhul tunmā disam sōhanā.

The mortal is mistaken on beholding the colocynth which appears to be beautiful.

— Guru Arjun Dev in Raga Jaitsri Vaar 10 shaloka 5, 2.1 (p. 708 SGGS)

See also

References

  1. ^ "The Plant List: A Working List of All Plant Species". Retrieved 13 November 2014.
  2. ^ a b c d e "Citrullus colocynthis". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 3 December 2014.
  3. ^ Eidi S, Azadi HG, Rahbar N, Mehmannavaz HR (2015). "Evaluation of antifungal activity of hydroalcoholic extracts of Citrullus colocynthis fruit". Journal of Herbal Medicine. 5 (1): 36–40. doi:10.1016/j.hermed.2015.01.003.
  4. ^ a b c Lloyd, John U. (1898). "Citrullus Colocynthis". The Western Druggist. Chicago.
  5. ^ a b c d "Citrullus colocynthis - Potential Arid Land Biodiesel Feedstock from an Ancient Cucurbit". Retrieved 8 November 2012.
  6. ^ Schafferman, D.; Beharav A.; Shabelsky E.; Yaniv Z (1998). "Evaluation of Citrullus colocynthis, a desert plant native in Israel, as a potential source of edible oil". Journal of Arid Environments. 40 (4): 431–439. doi:10.1006/jare.1998.0454.
  7. ^ a b Gurudeeban, S.; Satyavani K.; Ramanathan T. (2010). "Bitter Apple (Citrullus colocynthis): An Overview of Chemical Composition and Biomedical Potentials". Asian Journal of Plant Sciences. 9 (7): 394–401. doi:10.3923/ajps.2010.394.401.
  8. ^ Althawadi, A. M.; Grace J. (1986). "Water-use by the desert cucurbit Citrullus-colocynthis (L) Schrad". Oecologia. 70 (3): 475–480. doi:10.1007/bf00379514.
  9. ^ Si, Y.; Zhang C.K.; Meng S.S.; Dane F. (2009). "Gene expression changes in response to drought stress in Citrullus colocynthis". Plant Cell Rep. 28 (6): 997–1009. doi:10.1007/s00299-009-0703-5. PMID 19415285.
  10. ^ Sen, D. N.; Bhandari M.C. (1974). "On the ecology of a perennial cucurbit in Indian arid zone — Citrullus colocynthis (Linn.) Schrad". International Journal of Biometeorology. 18 (2): 113–120. Bibcode:1974IJBm...18..113S. doi:10.1007/bf01452231.
  11. ^ Ntui, V. O.; Thirukkumaran G.; Iioka S.; Mii M. (2009). "Efficient plant regeneration via organogenesis in "Egusi" melon (Colocynthis citrullus L.)". Scientia Horticulturae. 119 (4): 397–402. doi:10.1016/j.scienta.2008.08.031.
  12. ^ a b Zohary, Daniel; Hopf Maria (2000). Domestication of Plants in the Old World (Third ed.). Oxford University Press. p. 194.
  13. ^ Mora, George; Kohl, Benjamin G.; Midelfort, Erik; Bacon, Helen, eds. (1991). Witches, devils, and doctors in the Renaissance: Johann Weyer, De praestigiis daemonum. Translated by John Shea. Binghamton: Medieval and Renaissance Texts and Studies. p. 343. ISBN 978-0-86698-083-8.
  14. ^ a b c Public Domain This article incorporates text from a publication now in the public domain: Chambers, Ephraim, ed. (1728). Cyclopædia, or an Universal Dictionary of Arts and Sciences (1st ed.). James and John Knapton, et al. {{cite encyclopedia}}: Missing or empty |title= (help)
  15. ^ a b G., Miller, Anthony (1988). Plants of Dhofar, the southern region of Oman : traditional, economic, and medicinal uses. Morris, Miranda., Stuart-Smith, Susanna., Oman. Office of the Adviser for Conservation of the Environment. [Muscat]: Prepared and published by the Office of the Adviser for Conservation of the Environment, Diwan of Royal Court, Sultanate of Oman. p. 120. ISBN 0715708082. OCLC 20798112.{{cite book}}: CS1 maint: multiple names: authors list (link)
  16. ^ Giwa, Solomon; Abdullah, Luqman Chuah; Adam, Nor Mariah (2010). "Investigating 'Egusi' (Citrullus Colocynthis L.) Seed Oil as Potential Biodiesel Feedstock". Energies. 3 (4): 607–18. doi:10.3390/en3040607.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  17. ^ Rahuman, A. Abdul; Venkatesan, P.; Gopalakrishnan, Geetha (2008). "Mosquito larvicidal activity of oleic and linoleic acids isolated from Citrullus colocynthis (Linn.) Schrad". Parasitology Research. 103 (6): 1383–90. doi:10.1007/s00436-008-1146-6. PMID 18688644.
  18. ^ Wolfe, Brendan N. (October 2014). "Tolkien's Jonah" (PDF). Journal of Inklings Studies. 4.2: 21. Tolkien took special care over the name of the plant that shades Jonah in chapter 4, copying out the entry for 'castor' in the OED, exchanging notes with Jones on the subject, and ultimately opting for 'colocynth'. Nevertheless, the reviser replaced this word with 'castor oil plant'.
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