Annona squamosa

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Annona squamosa
Sugar apple on tree.jpg
Sugar apple with cross section.jpg
Cross section of the fruit shown on right
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Annona
Species:
A. squamosa
Binomial name
Annona squamosa
Synonyms

Annona asiaticaL. [3]
Annona cinereaDunal
Guanabanus squamosus(L.)M.Gómez [4] Xylopia glabraL. [5]
Annona forskahliiDC. [6]

Contents

Annona squamosa is a small, well-branched tree or shrub [7] from the family Annonaceae that bears edible fruits called sugar apples or sweetsops. [8] It tolerates a tropical lowland climate better than its relatives Annona reticulata and Annona cherimola [6] (whose fruits often share the same name) [3] helping make it the most widely cultivated of these species. [9] Annona squamosa is a small, semi-(or late) deciduous, [10] much-branched shrub or small tree 3 to 8 metres (10 to 26 feet) tall [7] [10] similar to soursop ( Annona muricata ). [11] It is native of tropical climate in the Americas and West Indies, and Spanish traders aboard the Manila galleons docking in the Philippines brought it to Asia. [12]

Michal Boym's drawing of, probably, the sugar-apple, in his Flora Sinensis (1655) Custard Apple - Flora Sinensis 1656 (2950756).jpg
Michał Boym's drawing of, probably, the sugar-apple, in his Flora Sinensis (1655)

The fruit is spherical-conical, 5–10 centimetres (2–4 inches) in diameter and 6–10 cm (2+1⁄4–4 in) long, and weighing 100–240 grams (3.5–8.5 ounces), with a thick rind composed of knobby segments. The colour is typically pale green through blue-green, with a deep pink blush in certain varieties, and typically has a bloom. It is unique among Annona fruits in being segmented; the segments tend to separate when ripe, exposing the innards.

The flesh is fragrant and sweet, creamy white through light yellow, and resembles and tastes like custard. The seeds are coated with the flesh, It is found adhering to 13-to-16-millimetre-long (1⁄2 to 5⁄8 in) seeds forming individual segments arranged in a single layer around a conical core. It is soft, slightly grainy, and slippery. The hard, shiny seeds may number 20–40 or more per fruit and have a brown to black coat, although varieties exist that are almost seedless. [12] [13] The seeds can be ground for use as an insecticide. [8] The stems run through the centre of the fruit connecting it to the outside. The skin is shaped like a Reuleaux triangle coloured green and rough in texture. Due to the soft flesh and structure of the sugar apple it is very fragile to pressure when ripe.

New varieties are also being developed in Taiwan and Hong Kong. The atemoya or "pineapple sugar-apple", a hybrid between the sugar-apple and the cherimoya, is popular in Taiwan, although it was first developed in the United States in 1908. The fruit is similar in sweetness to the sugar-apple, but has a very different taste. As its name suggests, it tastes like pineapple.

Description

Flower Annona squamosa (Custurd Apple) flower in Hyderabad, AP W IMG 9352.jpg
Flower
Seedling Young sugar apple seedling.jpg
Seedling
Branches Annona squamosa (Custurd Apple) plant in Hyderabad, AP W IMG 9354.jpg
Branches

The fruit of A. squamosa (sugar-apple) has sweet whitish pulp, and is popular in tropical markets. [10] In bengal it is called Ata phal.

Stems and leaves

A. squamosa leaves Annona squamosa at Kampung Bukit Jagong 20230629 174058.jpg
A. squamosa leaves

Branches with light brown bark and visible leaf scars; inner bark light yellow and slightly bitter; twigs become brown with light brown dots (lenticels – small, oval, rounded spots upon the stem or branch of a plant, from which the underlying tissues may protrude or roots may issue). [6]

Thin, simple, alternate leaves [11] occur singly, [6] 5 to 17 centimetres (2 to 6+3⁄4 inches) long and 2 to 6 cm (3⁄4 to 2+3⁄8 in) wide; [10] [6] rounded at the base and pointed at the tip (oblong-lanceolate). [10] They are pale green on both surfaces and mostly hairless [6] with slight hairs on the underside when young. [7] The sides sometimes are slightly unequal and the leaf edges are without teeth, inconspicuously hairy when young. [6] [11]

The leaf stalks are 0.4 to 2.2 cm (1⁄8 to 7⁄8 in) long, [10] green, and sparsely pubescent. [6]

Flowers

Solitary or in short lateral clusters of 2–4 about 2.5 cm (1 in) long, [10] greenish-yellow flowers on a hairy, slender [6] 2 cm (3⁄4 in) long stalk. [10] Three green outer petals, purplish at the base, oblong, 1.6 to 2.5 cm (5⁄8 to 1 in) long, and 0.6 to 0.75 cm (1⁄4 to 5⁄16 in) wide, three inner petals reduced to minute scales or absent. [7] [10] Very numerous stamens; crowded, white, less than 1.6 cm (5⁄8 in) long; ovary light green. Styles white, crowded on the raised axis. Each pistil forms a separate tubercle (small rounded wartlike protuberance), mostly 1.3 to 1.9 cm (1⁄2 to 3⁄4 in) long and 0.6 to 1.3 cm (1⁄4 to 1⁄2 in) wide which matures into the aggregate fruit. [6]

Flowering occurs in spring-early summer [10] and flowers are pollinated by nitidulid beetles. [14] Its pollen is shed as permanent tetrads. [15]

Fruits and reproduction

Fruits ripen 3 to 4 months after flowering. [16]

Aggregate and soft fruits form from the numerous and loosely united pistils of a flower [6] which become enlarged [10] and mature into fruits which are distinct from fruits of other species of genus [6] (and more like a giant raspberry instead).

The round or heart-shaped [6] greenish yellow, ripened aggregate fruit is pendulous [10] on a thickened stalk; 5 to 10 cm (2 to 3+7⁄8 in) [6] [7] in diameter [10] [11] with many round protuberances [6] and covered with a powdery bloom. Fruits are formed of loosely cohering or almost free carpels (the ripened pistels). [7]

The pulp is white tinged yellow, [7] edible and sweetly aromatic. Each carpel containing an oblong, shiny and smooth, [6] dark brown [7] to black, 1.3 to 1.6 cm (1⁄2 to 5⁄8 in) long seed. [6]

Nutrition and uses

Sugar-apples, (sweetsop), raw
Nutritional value per 100 g (3.5 oz)
Energy 393 kJ (94 kcal)
23.64 g
Dietary fiber 4.4 g
Fat
0.29 g
2.06 g
Vitamins and minerals
Vitamins Quantity
%DV†
Thiamine (B1)
9%
0.11 mg
Riboflavin (B2)
9%
0.113 mg
Niacin (B3)
6%
0.883 mg
Pantothenic acid (B5)
5%
0.226 mg
Vitamin B6
12%
0.2 mg
Folate (B9)
4%
14 μg
Vitamin C
40%
36.3 mg
Minerals Quantity
%DV†
Calcium
2%
24 mg
Iron
3%
0.6 mg
Magnesium
5%
21 mg
Manganese
18%
0.42 mg
Phosphorus
3%
32 mg
Potassium
8%
247 mg
Sodium
0%
9 mg
Zinc
1%
0.1 mg
Link to USDA Database entry
†Percentages estimated using US recommendations for adults, [17] except for potassium, which is estimated based on expert recommendation from the National Academies. [18]

Sugar-apple is high in energy, an excellent source of vitamin C and manganese, a good source of thiamine and vitamin B6, and provides vitamin B2, B3 B5, B9, iron, magnesium, phosphorus and potassium in fair quantities. [19]

Chemistry

The diterpenoid alkaloid atisine is the most abundant alkaloid in the root. Other constituents of Annona squamosa include the alkaloids oxophoebine, [20] reticuline, [20] isocorydine, [21] and methylcorydaldine, [21] and the flavonoid quercetin-3-O-glucoside. [22]

Bayer AG has patented the extraction process and molecular identity of the annonaceous acetogenin annonin, as well as its use as a biopesticide. [23] Other acetogenins have been isolated from the seeds, [24] bark, [25] and leaves.[ citation needed ]

Distribution and habitat

Annona squamosa is native to the tropical Americas and West Indies, but the exact origin is unknown. It is now the most widely cultivated of all the species of Annona , being grown for its fruit throughout the tropics and warmer subtropics, such as India, Indonesia, Thailand, Taiwan, and China as far north as Suzhou; [26] it was introduced to southern Asia before 1590. It is naturalized as far north as southern Florida in the United States and as far south as Bahia in Brazil, and is an invasive species in some areas. [6] [9] [11]

Native
Neotropic
Caribbean: Antigua and Barbuda, Bahamas, Barbados, Cuba, Dominica, Dominican Republic, Grenada, Guadeloupe, Haiti, Jamaica, Martinique, Montserrat, Netherlands Antilles, Puerto Rico, St Kitts and Nevis, St Lucia, St Vincent and the Grenadines, Suriname, Trinidad and Tobago, Virgin Islands.
Central America: Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama
Northern South America: Suriname, French Guiana, Guyana, Venezuela
Western South America: Bolivia, Colombia, Ecuador, Peru
Southern South America: Argentina, Brazil, Chile, Paraguay, Uruguay [6]
Naturalised
Pacific: Samoa, Tonga
North America: Mexico, Belize
Afrotropic : Angola, Namibia, Sudan, Tanzania, Uganda, Zanzibar, Kenya
Australasia : Australia, Fiji, New Zealand, Papua New Guinea, Solomon Islands
Indomalaya : Bangladesh, Cambodia, China, India, Indonesia, Laos, Malaysia, Nepal, Pakistan, Philippines, Sri Lanka, Taiwan, Thailand, Myanmar, Vietnam
Palearctic : Cyprus, Greece, Lebanon, Malta, [6] Israel

Climate and cultivation

Like most species of Annona, it requires a tropical or subtropical climate with summer temperatures from 25 °C (77 °F) to 41 °C (106 °F), and mean winter temperatures above 15 °C (59 °F). It is sensitive to cold and frost, being defoliated below 10 °C (50 °F) and killed by temperatures of a couple of degrees below freezing. It is only moderately drought-tolerant, requiring at least 700 millimetres (28 in) of annual rainfall, and does not produce fruit well during droughts.

It will grow from sea level to an altitude of 2,000 metres (6,600 feet) and thrives in hot dry climates, differing in its tolerance of lowland tropics from many of the other fruit bearers in the Annona family.

It is quite a prolific bearer, and it produces fruit within as little as two to three years. A five-year-old tree can produce as many as 50 sugar apples. Poor fruit production has been reported in Florida because there are few natural pollinators (honeybees have a difficult time penetrating the tightly closed female flowers); however, hand pollination with a natural fibre brush is effective in increasing yield. Natural pollinators include beetles (coleoptera) of the families Nitidulidae, Staphylinidae, Chrysomelidae, Curculionidae and Scarabaeidae. [9] [13]

Ecology

In the Philippines, the fruit is commonly eaten by the Philippine fruit bat (kabag or kabog), which then spreads the seeds from island to island.

It is a host plant for larvae of the butterfly Graphium agamemnon (tailed jay).

Uses

In traditional Indian, Thai, and Native American medicines, the leaves are boiled down with water, possibly mixed with other specific botanicals, and used in a decoction to treat dysentery and urinary tract infection. [27] In traditional Indian medicine, the leaves are also crushed for use as a poultice, and applied to wounds. [27] In Mexico, the leaves are rubbed on floors and put in hens' nests, to repel lice. [9] In Haiti, the fruit is known as cachiman and is used to simply make juice. [28] In Lebanon and Syria, it is made into a variety of desserts and sweets, referred to as ashta.[ citation needed ]

Related Research Articles

<i>Asimina</i> North American Genus of fruit trees

Asimina is a genus of small trees or shrubs described as a genus in 1763. Asimina is the only temperate genus in the tropical and subtropical flowering plant family Annonaceae. Asimina have large, simple leaves and large fruit. It is native to eastern North America and collectively referred to as pawpaw. The genus includes the widespread common pawpaw Asimina triloba, which bears the largest edible fruit indigenous to the United States. Pawpaws are native to 26 states of the U.S. and to Ontario in Canada. The common pawpaw is a patch-forming (clonal) understory tree found in well-drained, deep, fertile bottomland and hilly upland habitat. Pawpaws are in the same plant family (Annonaceae) as the custard apple, cherimoya, sweetsop, soursop, and ylang-ylang; the genus is the only member of that family not confined to the tropics. Fossils date to the Cretaceous.

<span class="mw-page-title-main">Jujube</span> Species of plant with edible fruit

Jujube, sometimes jujuba, known by the scientific name Ziziphus jujuba and also called red date, Chinese date, and Chinese jujube, is a species in the genus Ziziphus in the buckthorn family Rhamnaceae. It is often confused with the closely related Indian Jujube, Z. mauritiana. The Chinese jujube enjoys a diverse range of climates from temperate to tropical, whereas the Indian jujube is restricted to warmer subtropical and tropical climates.

<span class="mw-page-title-main">Soursop</span> Species of plant

Soursop is the fruit of Annona muricata, a broadleaf, flowering, evergreen tree. It is native to the tropical regions of the Americas and the Caribbean and is widely propagated. It is in the same genus, Annona, as cherimoya and is in the Annonaceae family.

<span class="mw-page-title-main">Annonaceae</span> Family of flowering plants

The Annonaceae are a family of flowering plants consisting of trees, shrubs, or rarely lianas commonly known as the custard apple family or soursop family. With 108 accepted genera and about 2400 known species, it is the largest family in the Magnoliales. Several genera produce edible fruit, most notably Annona, Anonidium, Asimina, Rollinia, and Uvaria. Its type genus is Annona. The family is concentrated in the tropics, with few species found in temperate regions. About 900 species are Neotropical, 450 are Afrotropical, and the remaining are Indomalayan.

<span class="mw-page-title-main">Cherimoya</span> Edible fruit-bearing species of plant

The cherimoya, also spelled chirimoya and called chirimuya by the Inca people, is a species of edible fruit-bearing plant in the genus Annona, from the family Annonaceae, which includes the closely related sweetsop and soursop. The plant has long been believed to be native to Ecuador and Peru, with cultivation practised in the Andes and Central America, although a recent hypothesis postulates Central America as the origin instead, because many of the plant's wild relatives occur in this area.

<i>Annona</i> Genus of fruits and plants

Annona or Anona is a genus of flowering plants in the pawpaw/sugar apple family, Annonaceae. It is the second largest genus in the family after Guatteria, containing approximately 166 species of mostly Neotropical and Afrotropical trees and shrubs.

<span class="mw-page-title-main">Custard apple</span> Index of plants with the same common name

Custard apple is a common name for several fruits and may refer to Annonaceae, the custard apple family, which includes the following species referred to as custard apples:

<i>Cassia fistula</i> Species of plant

Cassia fistula, also known as golden shower, purging cassia, Indian laburnum, kani konna, or pudding-pipe tree, is a flowering plant in the family Fabaceae. The species is native to the Indian subcontinent and adjacent regions of Southeast Asia. It is the official state flower of Kerala state and Delhi UT in India. It is also a popular ornamental plant and is also used in herbal medicine.

<i>Annona reticulata</i> Species of tree

Annona reticulata is a small deciduous or semi-evergreen tree in the plant family Annonaceae. It is best known for its fruit, called custard apple, a common name shared with fruits of several other species in the same genus: A. cherimola and A. squamosa. Other English common names include ox heart and bullock's heart. The fruit is sweet and useful in preparation of desserts, but is generally less popular for eating than that of A. cherimola.

<i>Annona glabra</i> Tropical fruit tree

Annona glabra is a tropical fruit tree in the family Annonaceae, in the same genus as the soursop and cherimoya. Common names include pond apple, alligator apple, swamp apple, corkwood, bobwood, and monkey apple. The tree is native to Florida in the United States, the Caribbean, Central and South America, and West Africa. It is common in the Everglades. The A. glabra tree is considered an invasive species in Sri Lanka and Australia. It grows in swamps, is tolerant of saltwater, and cannot grow in dry soil.

<span class="mw-page-title-main">Ilama (fruit)</span> Species of tree

The ilama or ilama tree is a tropical fruit tree found in Central America. The name is derived from the Nahuatl ilamatzapotl, of which the rough translation is "old woman's sapote". The name is also applied to a similar fruit, soncoya or cabeza de negro.

<i>Asimina triloba</i> Species of tree

Asimina triloba, the American papaw, pawpaw, paw paw, or paw-paw, among many regional names, is a small deciduous tree native to the eastern United States and southern Ontario, Canada, producing a large, yellowish-green to brown fruit. Asimina is the only temperate genus in the tropical and subtropical flowering plant family Annonaceae, and Asimina triloba has the most northern range of all. Well-known tropical fruits of different genera in family Annonaceae include the custard-apple, cherimoya, sweetsop, ylang-ylang, and soursop.

<i>Syzygium jambos</i> Species of fruit and plant

Syzygium jambos is a species of rose apple originating in Southeast Asia and occurring widely elsewhere, having been introduced as an ornamental and fruit tree.

<i>Annona montana</i> Species of tree

Annona montana, the mountain soursop, is a tree and its edible fruit in the Annonaceae family native to Central America, the Amazon, and islands in the Caribbean. It has fibrous fruits. A. montana may be used as a rootstock for cultivated Annonas.

<span class="mw-page-title-main">Annonacin</span> Chemical compound

Annonacin is a chemical compound with toxic effects, especially in the nervous system, found in some fruits such as the paw paw, custard apples, soursop, and others from the family Annonaceae. It is a member of the class of compounds known as acetogenins. Annonacin-containing fruit products are regularly consumed throughout the West Indies for their traditional medicine uses.

<i>Annona mucosa</i> Species of tropical fruit plant

Annona mucosa is a species of flowering plant in the custard-apple family, Annonaceae, that is native to tropical South America. It is cultivated for its edible fruits, commonly known as biribá, lemon meringue pie fruit, or wild sugar-apple, throughout the world's tropics and subtropics.

<i>Annona senegalensis</i> Species of plant

Annona senegalensis, commonly known as African custard-apple, wild custard apple, wild soursop, abo ibobo, sunkungo, and dorgot is a species of flowering plant in the custard apple family, Annonaceae. The specific epithet, senegalensis, translates to mean "of Senegal", the country where the type specimen was collected.

<span class="mw-page-title-main">Atemoya</span> Species of fruit and plant

The atemoya, Annona × atemoya, or Annona squamosa × Annona cherimola is a hybrid of two fruits – the sugar-apple and the cherimoya – which are both native to the American tropics. This fruit is popular in Taiwan, where it is known as the "pineapple sugar apple" (鳳梨釋迦), so it is sometimes wrongly believed to be a cross between the sugar-apple and the pineapple. In Cuba it is known as anón, and in Venezuela chirimorinon. In Lebanon, the fruit is called achta. In Tanzania it is called stafeli dogo. In Brazil, the atemoya became popular and in 2011, around 1,200 hectares of atemoia were cultivated in Brazil. In Taiwan, the cultivating area of atemoya was 2,856.46 hectares in 2020, and Taitung County was the major place of cultivating.

<i>Annona crassiflora</i> Species of fruit and plant

Annona crassiflora, commonly known as marolo, araticum cortiça, araticum do cerrado or bruto, is a flowering plant in the Annonaceae family. The flowers of a marolo look like jellyfish wearing hats, and the fruits are sweet and very rough. It is native to Brazil and Paraguay and the fruit is eaten by native peoples in the Brazilian Cerrado. Although it is considered to have potential for cultivation, it has not been domesticated to date.

References

  1. ↑ Botanic Gardens Conservation International (BGCI); IUCN SSC Global Tree Specialist Group (2019). "Annona squamosa". IUCN Red List of Threatened Species . 2019: e.T146787183A146787185. doi: 10.2305/IUCN.UK.2019-2.RLTS.T146787183A146787185.en . Retrieved 16 December 2022.
  2. ↑ Natural Resources Conservation Service (NRCS). "PLANTS Profile, Annona squamosa L". The PLANTS Database. United States Department of Agriculture . Retrieved 2008-04-17.
  3. 1 2 "Annona squamosa". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 2008-04-17.
  4. ↑ Dr. Richard Wunderlin, Dr. Bruce Hansen. "synonyms of Annona squamosa". Atlas of Florida Vascular Plants. Institute for Systematic Botany, University of Florida. Retrieved 2008-04-17.
  5. ↑ Missouri Botanical Garden (1753). "Annona squamosa L". Tropicos. Retrieved 2008-04-17.
  6. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 "Current name: Annona squamosa". AgroForestryTree Database. International Center For Research In Agroforestry. Archived from the original on 2011-05-26. Retrieved 2008-04-17.
  7. 1 2 3 4 5 6 7 8 "Compilation: Annona squamosa". Global Plants. JSTOR. Retrieved 2019-09-05.
  8. 1 2 The Complete Guide to Edible Wild Plants. United States Department of the Army. New York: Skyhorse Publishing. 2009. p. 100. ISBN   978-1-60239-692-0. OCLC   277203364.{{cite book}}: CS1 maint: others (link)
  9. 1 2 3 4 Morton, Julia (1987). "Sugar Apple Annona squamosa". Fruits of warm climates. Department of Horticulture & Landscape Architecture, Purdue University. p. 69. Archived from the original on 5 April 2008. Retrieved 2008-04-17.
  10. 1 2 3 4 5 6 7 8 9 10 11 12 13 Kral, Robert. "Annona squamosa Linnaeus, Sp. Pl. 1: 537. 1753". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico. Vol. 3. Retrieved 2019-09-05.
  11. 1 2 3 4 5 "Annona squamosa". Pacific Island Ecosystems at Risk (PIER). 2008-01-05. Archived from the original on 12 May 2008. Retrieved 2008-04-17.
  12. 1 2 Morton, Julia (1987). "Annona squamosa". Fruits of warm climates. p. 69. Retrieved 6 March 2013.
  13. 1 2 "Annona squamosa". AgroForestryTree Database. Archived from the original on 14 March 2007. Retrieved 16 September 2013.
  14. ↑ McGregor, S.E. Insect Pollination Of Cultivated Crop Plants Archived 2023-03-26 at the Wayback Machine USDA, 1976
  15. ↑ Walker JW (1971) Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae. Contributions from the Gray Herbarium of Harvard University, 202: 1-130.
  16. ↑ Grant, Amy (2021). "What Is Sugar Apple Fruit: Can You Grow Sugar Apples". Gardening Know How. Retrieved 4 August 2023.
  17. ↑ United States Food and Drug Administration (2024). "Daily Value on the Nutrition and Supplement Facts Labels". FDA. Archived from the original on 2024-03-27. Retrieved 2024-03-28.
  18. ↑ National Academies of Sciences, Engineering, and Medicine; Health and Medicine Division; Food and Nutrition Board; Committee to Review the Dietary Reference Intakes for Sodium and Potassium (2019). Oria, Maria; Harrison, Meghan; Stallings, Virginia A. (eds.). Dietary Reference Intakes for Sodium and Potassium. The National Academies Collection: Reports funded by National Institutes of Health. Washington, DC: National Academies Press (US). ISBN   978-0-309-48834-1. PMID   30844154. Archived from the original on 2024-05-09. Retrieved 2024-06-21.
  19. ↑ "Benefits of Custard apple". 22 December 2014.
  20. 1 2 Dholvitayakhun A, Trachoo N; et al. (2013). "Potential applications for Annona squamosa leaf extract in the treatment and prevention of foodborne bacterial disease". Natural Product Communications. 8 (3): 385–388. doi: 10.1177/1934578X1300800327 . PMID   23678817.
  21. 1 2 Yadav DK, Singh N; et al. (2011). "Anti-ulcer constituents of Annona squamosa twigs". Fitoterapia. 82 (4): 666–675. doi:10.1016/j.fitote.2011.02.005. PMID   21342663.
  22. ↑ Panda S, Kar A (2007). "Antidiabetic and antioxidative effects of Annona squamosa leaves are possibly mediated through quercetin-3-O-glucoside". BioFactors. 31 (3–4): 201–210. doi:10.1002/biof.5520310307. PMID   18997283. S2CID   38336427.
  23. ↑ Moeschler HF, Pfluger W; et al. (August 1987). "Insecticide US 4689232 A" . Retrieved 2014-12-03.
  24. ↑ Chen Y, Xu SS; et al. (2012). "Anti-tumor activity of Annona squamosa seeds extract containing annonaceous acetogenin compounds". Journal of Ethnopharmacology. 142 (2): 462–466. doi:10.1016/j.jep.2012.05.019. PMID   22609808.
  25. ↑ Li XH, Hui YH; et al. (1990). "Bullatacin, bullatacinone, and squamone, a new bioactive acetogenin, from the bark of Annona squamosa". Journal of Natural Products. 53 (1): 81–86. doi:10.1021/np50067a010. PMID   2348205.
  26. ↑ "Sweetsop (Annona squamosa)". January 2020.
  27. 1 2 Dholvitayakhun A, Trachoo N; et al. (2016). "Using scanning and transmission electron microscopy to investigate the antibacterial mechanism of action of the medicinal plant Annona squamosa Linn". Journal of Herbal Medicine. 7: 31–36. doi:10.1016/j.hermed.2016.10.003.
  28. ↑ "Cachiman (Annona reticulata L.)". Carib Fruits. Retrieved 8 November 2020.

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