Cherimoya

The cherimoya (Annona cherimola), also spelled chirimoya and called chirimuya by the Inca people, is an edible fruit-bearing species of the genus Annona from the family Annonaceae. They were believed to be native to Colombia, Ecuador, Peru, Bolivia and Chile,[2] spreading through cultivation to the Andes and Central America.[2][3][4] But they have been found to have originated in Central America.[5]

For the thoroughbred racehorse, see Cherimoya (horse).

Cherimoya
Branch with leaves and fruit
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Annona
Species:
A. cherimola
Binomial name
Annona cherimola
Current range of native and naturalized A. cherimola
Synonyms[1]

Annona pubescens Salisb.
Annona tripetala Aiton

Cherimoya is grown in tropical regions throughout the world, and in Spain, where it is widely consumed. It is grown in the southern provinces of Granada and Málaga.[2][5] It is also grown in Italy, in the southern province of Reggio Calabria. It is in the same genus, Annona, as soursop.

American writer Mark Twain called the cherimoya "the most delicious fruit known to men".[6] The creamy texture of the flesh gives the fruit its secondary name, the "custard apple".

Etymology

The name is derived from the Quechua word chirimuya, which means "cold seeds." The plant grows at high altitudes, where the weather is colder, and the seeds will germinate at higher altitudes.[2] In Bolivia, Peru, Chile, Ecuador, and Colombia, the fruit is commonly known as chirimoya (spelled according to the rules of the Spanish language).

Description

Annona cherimola is a fairly dense, fast-growing, woody,[7] briefly deciduous[8] but mostly evergreen, low-branched, spreading tree[7] or shrub,[8] 5 metres (16 ft) to 9 metres (30 ft) tall.[7]

Stems and leaves

Mature branches are sappy and woody.[8] Young branches and twigs have a matting of short, fine, rust colored hairs.[7][9]

The leathery leaves are 5–25 centimetres (2.0–9.8 in) long[9][10] 3–10 centimetres (1.2–3.9 in) wide[9] and mostly elliptic, pointed at the ends and rounded near the leaf stalk. When young, they are covered with soft, fine, tangled, rust colored hairs. When mature, the leaves bear hairs only along the veins on the undersurface.[7] Tops are hairless and a dull medium green with paler veins,[10] backs velvety,[8] dull grey-green with raised pale green veins. New leaves are whitish below.[10]

Leaves are single and alternate, dark green and slightly hairy on the top surface.[7] They attach to branches with stout 6–10 millimetres (0.24–0.39 in) long and densely hairy leaf stalks.[9]

Flowers

Cherimoya trees bear very pale green,[10] fleshy flowers. They are 3 centimetres (1.2 in) long,[8] with very strong fruity odor.[10] Each flower has three outer, greenish, fleshy, oblong, downy petals and three smaller, pinkish inner petals[7] with yellow or brown finely matted hairs outside, whitish with purple spot[8] and many stamens on the inside.[9] Flowers appear on the branches opposite to the leaves, solitary or in pairs or groups of three,[7][9] on flower stalks that are covered densely with fine rust colored hairs, 8–12 millimetres (0.31–0.47 in) long. Buds are 15–18 millimetres (0.59–0.71 in) long, 5–8 millimetres (0.20–0.31 in) wide at the base.[9] The pollen is shed as permanent tetrads.[11]

Fruits
Ripe cherimoya fruits
Split cherimoya fruit

Cherimoya fruit are large green conical[10] or heart-shaped compound fruit,[7] 10 centimetres (3.9 in) to 20 centimetres (7.9 in) long,[7] with diameters of 5 centimetres (2.0 in) to 10 centimetres (3.9 in),[9] and skin that gives the appearance of having overlapping scales or knobby warts. They ripen to brown with a fissured surface[10] from winter into spring;[8] they weigh on the average 150 grams (5.3 oz) to 500 grams (18 oz) but extra large specimens may weigh 2.7 kilograms (6.0 lb) or more.[7] The ripened flesh is creamy white.[10] When ripe, the skin is green and gives slightly to pressure. Some characterize the fruit flavor as a blend of banana, pineapple, papaya, peach, and strawberry.[12] The fruit can be chilled and eaten with a spoon, which has earned it another nickname, the ice cream fruit. In Peru and Chile, it is commonly used in ice creams and yogurt.[3]

The cherimoya fruits are classed according to degree of surface irregularity, as:[2] Lisa, almost smooth, difficult to discern areoles; Impresa, with "fingerprint" depressions; Umbonata, with rounded protrusions at the apex of each areole;[13] Mamilata with fleshy, nipple-like protrusions; Tuberculata, with conical protrusions having wartlike tips.

The flesh of the cherimoya contains numerous hard, inedible, black, bean-like, glossy seeds, 1 centimetre (0.39 in) to 2 centimetres (0.79 in) long[7] and about half as wide.[9] Cherimoya seeds are poisonous if crushed open.[2] Like other members of the family Annonaceae, the entire plant contain small amounts of neurotoxic acetogenins, such as annonacin,[2] which appear to be linked to atypical parkinsonism in Guadeloupe.[14] Moreover, an extract of the bark can induce paralysis if injected.[2]

"The pineapple, the mangosteen, and the cherimoya", wrote the botanist Berthold Carl Seemann, "are considered the finest fruits in the world, and I have tasted them in those localities where they are supposed to attain their highest perfection – the pineapple in Guayaquil, the mangosteen in the Indian Archipelago, and the cherimoya on the slopes of the Andes, and if I were asked which would be the best fruit, I would choose without hesitation, cherimoya. Its taste, indeed, surpasses that of every other fruit, and Haenke was quite right when he called it the masterpiece of Nature."[15]

Taxonomy

Cultivars

The cherimoya of the Granada-Málaga Tropical Coast is a fruit of the cultivar 'Fino de Jete' grown in the Granada-Málaga tropical southern coast of Spain with the EU's appellation protected designation of origin status.[16] The cultivar 'Fino de Jete' has skin type Impressa, are smooth or slightly concave at the edges. The fruit is round, oval, heart-shaped or kidney-shaped. The seeds are enclosed in the carpels and so do not detach easily, the flavour balances intense sweetness with slight acidity and the soluble sugar content exceeds 17° Bx. This variety is prepared and packed in the geographical area because "it is a very delicate perishable fruit and its skin is very susceptible to browning caused by mechanical damage, such as rubbing, knocks, etc. The fruit must be handled with extreme care, from picking by hand in the field to packing in the warehouse, which must be carried out within 24 hours. Repacking or further handling is strictly forbidden."[16]

Distribution and habitat
Region of wild cherimoyas in Vilcabamba, Ecuador
A wild cherimoya plant in Vilcabamba, Ecuador

Widely cultivated now, Annona cherimola is believed to originate from the Andes at altitudes of 700 metres (2,300 ft) to 2,400 metres (7,900 ft)[7][4] although an alternative hypothesis postulates Central America as the origin of Annona cherimola because many of its wild relatives occur in this area.[4] From there it was taken by Europeans to various parts of the tropics. Unlike other Annona species[17] A. cherimola has not successfully naturalized in West Africa,[18] and in Australasia Annona glabra is often misidentified as this species.

Native
Neotropic:
Western South America: Ecuador, Peru[1][19]
Southern South America: Chile[19]
Current (naturalized and native)
Neotropic:[7][19][20][21]
Caribbean: Florida, Cuba, Dominican Republic, Haiti, Jamaica, Puerto Rico
Central America: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama
Northern South America: Guyana, Venezuela
Southern North America: Mexico
Western South America: Bolivia, Colombia, Ecuador, Peru
Southern South America: Chile, Brazil
Palearctic: Algeria, Egypt, Libya, France, Italy, Spain, Madeira, Azores
Afrotropic: Eritrea, Somalia, Tanzania,
Indomalaya: India, Singapore, Thailand

Australia

Ecology

Pollination
Cherimoya sprouts emerging
Nitidulidae's beetle on cherimoya flower, Jundiaí, Brazil

The flowers are hermaphroditic and have a mechanism to avoid self-pollination.[2] The short-lived flowers open as female, then progress to a later, male stage in a matter of hours. This requires a separate pollinator that not only can collect the pollen from flowers in the male stage, but also deposit it in flowers in the female stage.

Studies of insects in the cherimoya's native region as its natural pollinator have been inconclusive; some form of beetle is suspected. Quite often, the female flower is receptive in the early part of the first day, but pollen is not produced in the male stage until the late afternoon of the second day. Honey bees are not good pollinators, for example, because their bodies are too large to fit between the fleshy petals of the female flower. Female flowers have the petals only partially separated, and the petals separate widely when they become male flowers. So, the bees pick up pollen from the male flowers, but are unable to transfer this pollen to the female flowers. The small beetles which are suspected to pollinate cherimoya in its land of origin are much smaller than bees.

For fruit production outside the cherimoya's native region, cultivators must either rely upon the wind to spread pollen in dense orchards or else use hand pollination. Pollinating by hand requires a paint brush. Briefly, to increase the fruit production, growers collect the pollen from the male plants with the brush, and then transfer it to the female flowers immediately or store it in the refrigerator overnight. Cherimoya pollen has a short life, but it can be extended with refrigeration.

Climate requirements

The evaluation of 20 locations of Loja Province, Ecuador indicated certain growing preferences of wild cherimoya, including altitude between 1,500–2,000 metres (4,900–6,600 ft), optimum annual temperature range from 18–20 °C (64–68 °F), annual precipitation between 800–1,000 millimetres (31–39 in), and soils with high sand content and slightly acidic properties with pH between 5 and 6.5.[13]

Cultivation
A Cherimoya fruit, growing in a protective cover on a plantation in Bin Lang Village, Taiwan

Annona cherimola, preferring the cool Andean altitudes, hybridizes with the other Annona species. A hybrid with A. squamosa called atemoya has received some attention in West Africa, Australia, Brazil and Florida (United States).[18]

Propagation

The tree thrives throughout the tropics at altitudes of 1,300 to 2,600 m (4,300 to 8,500 ft). Though sensitive to frost, it must have periods of cool temperatures or the tree will gradually go dormant.[2] The indigenous inhabitants of the Andes say the cherimoya cannot tolerate snow.

In the Mediterranean region, it is cultivated mainly in southern Spain and Portugal, where it was introduced between 1751 and 1797[2] from where it was carried to Italy, but now can be also found in several countries of Africa, the Middle East and Oceania. It is cultivated throughout the Americas, including Hawaii since 1790 and California, where it was introduced in 1871.[2]

Harvest

Large fruits which are uniformly green, without cracks or mostly browned skin, are best.

The optimum temperature for storage is 8–12 °C (46–54 °F), depending on cultivar, ripeness stage, and duration, with an optimum relative humidity of 90–95%.[2] Unripe cherimoyas will ripen at room temperature, when they will yield to gentle pressure.[2] Exposure to Ethylene as a plant hormone#ethylene (100 ppm for one to two days) accelerates ripening of mature green cherimoya and other Annona fruits; they can ripen in about five days if kept at 15 to 20 °C (59 to 68 °F). Ethylene removal can be helpful in slowing the ripening of mature green fruits.

Eating characteristics

Different varieties have different flavors, textures, and shapes.[2] Shapes can range from imprint areoles, flat areoles, slight bump or point areoles, full areoles, and combinations of these shapes. The flavor of the flesh ranges from mellow sweet to tangy or acidic sweet, with variable suggestions of pineapple, banana, pear, papaya, strawberry or other berry, and apple, depending on the variety.

When the fruit is soft-ripe/fresh-ripe and still has the fresh, fully mature greenish/greenish-yellowish skin color, the texture is like that of a soft-ripe pear and papaya. If the skin is allowed to turn fully brown, yet the flesh has not fermented or gone "bad", then the texture can be custard-like. Often, when the skin turns brown at room temperature, the fruit is no longer good for human consumption. Also, the skin turns brown if it has been under normal refrigeration for too long – i.e., after a day or two.

Nutritional value
Cherimoya, raw
Nutritional value per 100 g (3.5 oz)
Energy313 kJ (75 kcal)
17.71 g
Sugars12.87
Dietary fiber3 g
0.68 g
1.57 g
VitaminsQuantity %DV†
Thiamine (B1)
9%
0.101 mg
Riboflavin (B2)
11%
0.131 mg
Niacin (B3)
4%
0.644 mg
Pantothenic acid (B5)
7%
0.345 mg
Vitamin B6
20%
0.257 mg
Folate (B9)
6%
23 μg
Vitamin C
15%
12.6 mg
Vitamin E
2%
0.27 mg
MineralsQuantity %DV†
Calcium
1%
10 mg
Iron
2%
0.27 mg
Magnesium
5%
17 mg
Manganese
4%
0.093 mg
Phosphorus
4%
26 mg
Potassium
6%
287 mg
Sodium
0%
7 mg
Zinc
2%
0.16 mg
Link to USDA Database entry
†Percentages are roughly approximated using US recommendations for adults.
Source: USDA Nutrient Database

In a 100 g serving providing 75 calories, cherimoya is an excellent source (> 19% of the Daily Value, DV) of vitamin B6 and a good source (10–19% DV) of vitamin C, dietary fiber and riboflavin (table).

Culture

The Moche culture of Peru had a fascination with agriculture and represented fruits and vegetables in their art. Cherimoyas were often depicted in their ceramics.[22]

gollark: You should probably do that? Sleep deprivation is no joke.
gollark: Anyway, if for some reason you *can't* do that, you almost certainly cannot revise a year of stuff in two complex subjects very well and should just try and work out what to prioritize.
gollark: Don't we all?
gollark: I don't know. There's a lot of overlap.
gollark: Have chemists ever built a time machine? No? Exactly.

See also
  • "Annona cherimola Miller". Integrated Taxonomic Information System. Retrieved 17 March 2008.
  • California Rare Fruit Growers article on cherimoya

References
  1. "Annona cherimola". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2008-04-17.
  2. Morton, JF (1987). "Cherimoya, in Fruits of Warm Climates, p 65-9". Center for New Crops and Plant Products, Purdue University Department of Horticulture and Landscape Architecture.
  3. Popenoe H, King SR, León J, Kalinowski LS, Vietmeyer ND, et al. (1989). "Cherimoya". In National Research Council (ed.). Lost crops of the Incas: Little-known plants of the Andes with promise for worldwide cultivation. Washington, D.C.: National Academy Press. pp. 228–239. doi:10.17226/1398. ISBN 978-0-309-07461-2.
  4. van Zonneveld M, Scheldeman X, Escribano P, Viruel MA, Van Damme P, Garcia W, Tapia C, Romero J, Sigueñas M, Hormaza JI (2012). "Mapping Genetic Diversity of Cherimoya (Annona cherimola Mill.): Application of Spatial Analysis for Conservation and Use of Plant Genetic Resources". PLoS ONE. 7 (1): e29845. Bibcode:2012PLoSO...729845V. doi:10.1371/journal.pone.0029845. PMC 3253804. PMID 22253801.
  5. "Las chirimoyas, de América Central a Málaga". Diario Sur. September 8, 2017.
  6. Twain M (October 25, 1866). "Kau and Waiohinu in Kilauea, June, 1866". The Sacramento Daily Union.
  7. "Current name: Annona cherimola". AgroForestryTree Database. International Center For Research In Agroforestry. Archived from the original on 2011-09-30. Retrieved 2008-04-17.
  8. EEB Greenhouse Staff, University of Connecticut (2008-04-10). "Annona cherimola Mill". Ecology & Evolutionary Biology Greenhouses. Ecology & Evolutionary Biology Greenhouses. Retrieved 2008-04-17.
  9. Wiggins, I. L.; Porter, D. M. (1971). Flora of the Galapágos Islands. Stanford University Press. pp. 521–522. Via Pacific Island Ecosystems at Risk (PIER) (2008-04-09). "Annona cherimola (PIER Species info)". PIER species lists. United States Geological Survey & United States Forest Service. Archived from the original on July 15, 2007. Retrieved 2008-04-17.
  10. Flynn, Tim (2002-05-22). "Record Detail ANNONACEAE Annona cherimola Mill". Herbarium Database. National Tropical Botanical Garden. Archived from the original on 2011-07-24. Retrieved 2008-04-17.
  11. Lora J, Testillano PS, Risueño MC, Hormaza JI, Herrero M (2009). "Pollen development in Annona cherimola Mill. (Annonaceae). Implications for the evolution of aggregated pollen". BMC Plant Biology. 9 (1): 129. doi:10.1186/1471-2229-9-129. ISSN 1471-2229. PMC 2774696. PMID 19874617.
  12. "Descriptors for cherimoya (Annona cherimola Mill.)" (PDF). Bioversity International. Bioversity International and CHERLA. 2008. Retrieved 19 March 2019.
  13. Scheldeman, Xavier (2002). "Distribution and potential of cherimoya (Annona cherimoya Mill.) and highland papayas (Vasconcellea spp.) in Ecuador". University of Ghent.
  14. Champy P, et al. (December 2005). "Quantification of acetogenins in Annona muricata linked to atypical parkinsonism in guadeloupe". Mov. Disord. 20 (12): 1629–3. doi:10.1002/mds.20632. PMID 16078200.
  15. Popenoe, Wilson (1945). "The Underdeveloped Field of Tropical Fruits". In Wilson, C.M. (ed.). New Crops for the New World. New York: The MacMillan Co. p. 17.
  16. "COUNCIL REGULATION (EC) No 510/2006 'CHIRIMOYA DE LA COSTA TROPICAL DE GRANADA-MÁLAGA'". EU DOOR. Retrieved 24 March 2014.
  17. "Annona glabra Linn. [family ANNONACEAE]". Global Plants. JSTOR. Retrieved 2019-09-05.
  18. "Annona cherimola Mill. [family ANNONACEAE]". Global Plants. JSTOR. Retrieved 2019-09-05.
  19. Bioversity International. "Result set for: Annonaceae Annona cherimola". New World Fruits Database. Retrieved 2008-04-17.
  20. Natural Resources Conservation Service (NRCS). "PLANTS Profile, Annona cherimola Mill". The PLANTS Database. United States Department of Agriculture. Retrieved 2008-04-17.
  21. Australian Plant Name Index (APNI). "Search results". Integrated Botanical Information System (IBIS). Australian Plant Name Index (APNI). Retrieved 2008-04-17.
  22. Berrin, Katherine & Larco Museum. The Spirit of Ancient Peru: Treasures from the Museo Arqueológico Rafael Larco Herrera. New York: Thames and Hudson, 1997.
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