Colocasia

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Colocasia
Taimo Okinawa.jpg
Colocasia esculenta
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Araceae
Subfamily: Aroideae
Tribe: Colocasieae
Genus: Colocasia
Schott
Colocasia distribution.svg
Natural range of the genus Colocasia.
Synonyms [1] [2]

LeucocasiaSchott

Elephant ear plant with yellow blossom Elephant ear plant with blossum.jpg
Elephant ear plant with yellow blossom
Elephant ear plant with blossom Elephant ear ("Colocasia") blossum 01.jpg
Elephant ear plant with blossom

Colocasia is a genus [3] [4] of flowering plants in the family Araceae, native to southeastern Asia and the Indian subcontinent. Some species are widely cultivated and naturalized in other tropical and subtropical regions. [1] [5]

The names elephant-ear and cocoyam are also used for some other large-leaved genera in the Araceae, notably Xanthosoma and Caladium . The generic name is derived from the ancient Greek word kolokasion, which in Greek, botanist Dioscorides (1st century AD) may have inferred the edible roots of both Colocasia esculenta and Nelumbo nucifera .

The species Colocasia esculenta is invasive in wetlands along the American Gulf coast, where it threatens to displace native wetland plants. [6]

Description

They are herbaceous perennial plants with a large corm on or just below the ground surface. The leaves are large to very large, 20–150 cm (7.9–59.1 in) long, with a sagittate shape. The elephant's-ear plant gets its name from the leaves, which are shaped like a large ear or shield. The plant reproduces mostly by means of rhizomes (tubers, corms), but it also produces "clusters of two to five fragrant inflorescences in the leaf axils". [7] Like other members of the family, the plant contains an irritant which causes intense discomfort to the lips, mouth and throat. This acridity is caused in part by microscopic needle-like raphides of calcium oxalate monohydrate. [8] It must be processed by cooking, soaking or fermenting – sometimes along with an acid (lime or tamarind) – before being eaten. [9]

Species

There are numerous species of Colocasia. [1] [3] [4] [10]

  1. Colocasia affinis Schott - Yunnan, Nepal, Assam, Bhutan, Bangladesh, Myanmar, eastern Himalayas
  2. Colocasia antiquorum , [11] [12] sometimes considered a synonym of C. esculenta. [13]
  3. Colocasia esculenta (L.) Schott - taro, elephant-ear, eddoe - native to southern China, the Indian subcontinent, Indochina, Sumatra; naturalized in other parts of Asia as well as Africa, southern Europe, South America, Central America, the West Indies, the southeastern United States, and many oceanic islands including Hawaii
  4. Colocasia fallax Schott - Tibet, Yunnan, Himalayas, northern Indochina
  5. Colocasia fontanesii Schott - Yunnan, eastern Himalayas, northern Indochina
  6. Colocasia gigantea (Blume) Hook.f.– giant taro - southern China, Indochina, Malaysia, western Indonesia
  7. Colocasia hassanii H.Ara -Bangladesh
  8. Colocasia lihengiae C.L.Long & K.M.Liu - Arunachal Pradesh, Yunnan
  9. Colocasia mannii Hook.f. - Assam, Nicobar Islands
  10. Colocasia menglaensis J.T.Yin, H.Li & Z.F.Xu - Yunnan, Laos, Myanmar, Thailand, Vietnam
  11. Colocasia oresbia A.Hay - Bangladesh, Sabah
  12. Colocasia tonoimo A.Hay - Unknown

Ecology

Colocasia species are used as food plants by the larvae of some Lepidoptera species including Palpifer murinus and Palpifer sexnotatus .

Cultivation

C. esculenta corms Starr 070730-7885 Colocasia esculenta.jpg
C. esculenta corms

C. esculenta and other members of the genus are cultivated as ornamental plants, or for their edible corms, a traditional starch staple in many tropical areas.

The plant can be grown in the ground or in large containers. They are grown outside year-round in subtropical and tropical areas. In temperate regions, they are planted out for the summer and dug up and stored over winter, dry and with ventilation to prevent fungal infection. They can be grown in almost any temperature zone as long as the summer is warm. Growth is best at temperatures between 20 and 30 °C (68 and 86 °F). The plants can be damaged if temperatures fall below 10 °C (50 °F) for more than a few days.

The root tuber is typically planted close to the surface. The first signs of growth will appear in 1 to 3 weeks. The adult plant will need a minimum of at least 1 m2 (11 sq ft) of space for good growth. They do best in compost-rich soil and in shade, but will grow reasonably well in average soil provided it is moisture-retentive. The plants should not be left to go dry for too long; if this does happen, the leaves will wilt; watering will allow the plant to recover if done before they get too dry. Periodic fertilisation (every 3 to 4 weeks) with a common plant fertiliser will increase yields.

Culinary uses

Colocasia leaves are well known for their hydrophobicity. Colocasia leaf @ Kanjirappally.jpg
Colocasia leaves are well known for their hydrophobicity.

The edible types are grown in the South Pacific and eaten like potatoes and known as taro, eddoe, and dasheen. The leaves are often boiled with coconut milk to make a soup.

Poi, a Hawaiian dish, is made by boiling the starchy underground stem of the plant then mashing it into a paste. [14]

In the Mediterranean

In Cyprus, Colocasia has been in use since the time of the Roman Empire. Today it is known as kolokasi (Kολοκάσι). It is usually cooked with celery and pork or chicken, in a tomato sauce in casserole. "Baby" kolokasi is called "poulles": after being fried dry, red wine and coriander seed are added, and then it is served with freshly squeezed lemon. Lately, some restaurants have begun serving thin slices of kolokasi deep fried, calling them "kolokasi chips".

Apart from Cyprus, Colocasia is found in one other Mediterranean island, the Greek island of Ikaria. After the island was declared a Blue zone its culinary tradition has acquired some popularity and Colocasia (or kolokasi - Κολοκάσι in Greek) is part of that tradition. The plant has been reported to have been a vital source of food during WW II. [15] In Ikaria, after it is boiled it is usually eaten as a salad (with raw onions, herbs, olive oil, lemon etc. [16] ).

In South Asia

Indian cuisine with Colocasia Boiled,Peeled and Fried Colocasia.jpg
Indian cuisine with Colocasia

Both roots and leaves are eaten. In most of India and Pakistan the root is called arbi. Common preparations include cooking with curry, frying, and boiling. In Mithalanchal (Bihar), the leaf is called airkanchan and is curried.

In Gujarat, arbi leaves are used to make the dish patra. In Eastern part of Uttar Pradesh, arbi, known as arabi ka patta, is used to make the dish sahina. Arbi is also a very popular dish among the Hindu community in South Africa, where it is known as patha. In Manipur, the leaves are used in the Meitei ethnic cuisine, locally known as utti (pronounce ootti). The leaves are called paangkhoklaa by the Meiteis, while the edible corms are known as paan. Paan is often cooked with fermented soy beans to make curries. It is also used to make eromba, a Meitei side dish.

In Odisha, the arvi the root is called saru. it is an important ingredient in dalma, a popular Odia dish. The leaves used in a dish called "saru magura", made with rice batter inside the leaf which is steamed and fried.

In Kerala, the leaves are used to make chēmbilacurry, chēmbilāppam, and the roots are used in chembü puzhukkü. Various other recipes also exist locally. The stem and root are used in the preparation of stew and curry. In Kerala, chembu is planted in the month of May and can be harvested in December of the same year.

In Maharashtra, the leaves are called aloo and are used to make a sweet and sour curry with peanuts and cashew nuts that is commonly cooked during marriages. The leaf bases are mixed with curd to make the side dish dethi. The leaves are also coated in besan and fried to make the snack paatwadi or aloowadi.

In Gujarat, this leaf is called arbi (or alvi) and is used to make patra. This is a steamed dish similar to patrode, but with gram flour instead of the rice flour used in patrode. As in Maharashtra, the leaves are eaten as a fried snack.

In Nagaland, the leaves are dried, powdered, kneaded into a dough and baked into biscuits. These biscuits are burnt and dissolved in boiling water before being added into meat dishes to create a thick, flavourful dry gravy.

In Bengal, the plant is called kachu. Its leaves are used to wrap fish and prawns for steaming to make bhapa mach (steamed fish). The roots are used to make a thick creamy curry in which to cook prawns. The roots and stems are grated with coconut and used to create a chutney.

In South Karnataka particularly in the coastal regions , the leaves are made into a traditional dish called as 'patrode'or 'patrude'.

In Himachal Pradesh, in northern India, taro corms are known as ghandyali in Mandi districts, and the plant is also known as kachalu in the Kangra district. The dish called patrodu is made using taro leaves rolled with corn or gram flour and boiled in water. Another dish, pujji is made with mashed leaves and the trunk of the plant and ghandyali or taro corms are prepared as a separate dish. In Shimla, a pancake-style dish, called patra or patid, is made using gram flour.

In folklore

In Meitei mythology and Meitei folklore of Manipur, Colocasia (Meitei : ꯄꯥꯟ [17] ) plants are mentioned. One notable example is the Meitei folktale of the Hanuba Hanubi Paan Thaaba ( Meitei for ' Old Man and Old Woman planting Colocasia ') [lower-alpha 1] ). In this lore, the old man and his wife, the old woman, were tricked by a group of monkeys to plant the Colocasia plants in an unusual way. [18] [19] [20] The old couple did according to how they were advised by the monkeys, peeling off the best tubers of the plants, then boiling them in a pot until softened and after cooling them off, wrapping them in banana leaves and burying them in the soils of the farmlands. [21] [22] In the dead of the night, the monkeys sneak into the farmlands and secretly relished all the well cooked plants. After their dinner, they (monkeys) planted some inedible giant wild Colocasia plants in places to where the old couple placed the cooked plant tubers. Early in the morning, when the old couple woke up, they were surprised to see the plants getting full grown up just after one day of getting the tubers planted. Unaware of the tricks of the monkeys, the old couple cooked and ate the inedible wild Colocasia plants. As a reaction of the wild plants, they suffered from the unbearable tingling sensation in their throats. [23] [24] [25]

In art

Colocasia leaves are shown in the Kursi church mosaics as a platform, such as a plate or bowl, for serving of figs to eat. Colocasia antiquorumt Kursi mosaic.jpg
Colocasia leaves are shown in the Kursi church mosaics as a platform, such as a plate or bowl, for serving of figs to eat.

In the Levant, Colocasia has been in use since the time of the Byzantine Empire. The leaves are shown in mosaics from Israel as a platform, such as a plate or bowl, for serving of fruit to eat. For example, at the Kursi church mosaic.

Nutrition

Taro roots and leaves are rich in carbohydrates, protein, and dietary minerals. [26] Micronutrients include iron, copper, magnesium, potassium, and zinc. [27]

Phytochemicals

Colocasia leaves contain phytochemicals, such as anthraquinones, apigenin, catechins, cinnamic acid derivatives, vitexin, and isovitexin. [27]

See also

Related Research Articles

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References

  1. 1 2 3 "Plants of the World Online | Kew Science". Plants of the World Online.
  2. ↑ GRIN (October 5, 2007). "Colocasia Schott". Taxonomy for Plants. National Germplasm Resources Laboratory, Beltsville, Maryland: USDA, ARS, National Genetic Resources Program. Archived from the original on October 7, 2012. Retrieved July 13, 2010.
  3. 1 2 "Query Results for Genus Colocasia". IPNI . Retrieved February 13, 2010.
  4. 1 2 "Name - Colocasia Schott subordinate taxa". Tropicos. Saint Louis, Missouri: Missouri Botanical Garden . Retrieved February 13, 2010.
  5. ↑ Wagner, W. L.; D. R. Herbst & S. H. Sohmer (1999). Manual of the Flowering Plants of Hawai'i. Revised edition. Vol. 2. University of Hawaiʻi Press/Bishop Museum Press. p. 1357.
  6. ↑ Keddy, P.A., D. Campbell, T. McFalls, G. Shaffer, R. Moreau, C. Dranguet, and R. Heleniak. 2007. The wetlands of lakes Pontchartrain and Maurepas: past, present and future. Environmental Reviews 15: 1- 35.
  7. ↑ Brown, Deni. 2000. Aroids. Plants of the Arum Family. Timber Press, Oregon. p. 250.
  8. ↑ Bradbury, J. Howard; Nixon, Roger W. (1998). "The acridity of raphides from the edible aroids". Journal of the Science of Food and Agriculture. 76 (4): 608–616. doi: 10.1002/(SICI)1097-0010(199804)76:4<608::AID-JSFA996>3.0.CO;2-2 .
  9. ↑ Ramanatha, R.V.; Matthews, P.J.; Eyzaguirre, P.B.; Hunter, D., eds. (2010). The global diversity of taro: ethnobotany and conservation. Rome (Italy): Bioversity International. pp. 9–10. ISBN   978-92-9043-867-0.
  10. ↑ GRIN. "Species in GRIN for genus Colocasia". Taxonomy for Plants. National Germplasm Resources Laboratory, Beltsville, Maryland: USDA, ARS, National Genetic Resources Program. Retrieved July 13, 2010.
  11. ↑ "The Plant List" . Retrieved 15 February 2015.
  12. ↑ Utilisation des aliments tropicaux: racines et tubercules, FAO, Rome, 1990, p. 35. ISBN   92-5-202775-0, google book.
  13. ↑ "Colocasia esculenta". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 15 February 2015.
  14. ↑ World Book Encyclopedia
  15. ↑ "Γαστρονομία | Visit Ikaria". www.visitikaria.gr.
  16. ↑ "Κολοκάσι σαλάτα της Μακροζωίας,……. με Αγάπη από την Ικαρία !".
  17. ↑ Sharma, H. Surmangol (2006). "Learners' Manipuri-English dictionary". dsal.uchicago.edu (in Manipuri and English). University of Chicago. p. 114. Retrieved 2023-04-05. pān ꯄꯥꯟ /pán/ n. a plant of a genus (Colocasia) of the araceae family. pāndum /pán.dum/ n. the fleshy, underground stem of this plant. Morph: pān‑dum [a plant of Colocasia genus...‑round].
  18. ↑ B. Jayantakumar Sharma; Dr. Chirom Rajketan Singh (2014). Folktales of Manipur. p. 51.
  19. ↑ Oinam, James (2016-05-26). New Folktales of Manipur. Notion Press. p. 33. ISBN   978-1-945400-70-4.
  20. ↑ Oinam, James (2016-05-26). New Folktales of Manipur. Notion Press. p. 34. ISBN   978-1-945400-70-4.
  21. ↑ B. Jayantakumar Sharma; Dr. Chirom Rajketan Singh (2014). Folktales of Manipur. p. 52.
  22. ↑ Oinam, James (2016-05-26). New Folktales of Manipur. Notion Press. p. 35. ISBN   978-1-945400-70-4.
  23. ↑ B. Jayantakumar Sharma; Dr. Chirom Rajketan Singh (2014). Folktales of Manipur. p. 53.
  24. ↑ Oinam, James (2016-05-26). New Folktales of Manipur. Notion Press. p. 36. ISBN   978-1-945400-70-4.
  25. ↑ Oinam, James (2016-05-26). New Folktales of Manipur. Notion Press. p. 37. ISBN   978-1-945400-70-4.
  26. ↑ Melese Temesgen; Negussie Retta (2015-02-20). "A critical review of the role of taro Colocasia esculenta L. (Schott) to food security: A comparative analysis of Kenya and Pacific Island taro germplasm". Scientia Agriculturae. 9 (2). doi: 10.15192/pscp.sa.2015.9.2.101108 . ISSN   2311-0228.
  27. 1 2 Gupta, Kritika; Kumar, Ashwani; Tomer, Vidisha; Kumar, Vikas; Saini, Mona (2019). "Potential of Colocasia leaves in human nutrition: Review on nutritional and phytochemical properties". Journal of Food Biochemistry. 43 (7): e12878. doi: 10.1111/jfbc.12878 . PMID   31353694. S2CID   150032195.
  1. ↑ These said plants are also said to be Taro, which is a species of the Colocasia genus itself. However, in some cases, these plants are said to be other species of the very Colocasia genus.
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