Soursop
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 Soursop fruit
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| Annona muricata L. |
The Soursop, Guanábana, Graviola, Sirsak, Zuurzak (Literally "acid bag" in Dutch), Coração-da-Índia, Guyabano or Corossol (Annona muricata; syn. Annona sericea Dunal in Correia, M. P., (1984), Annona macrocarpa Wercklé, A. bonplandiana H.B. & K., A. cearensis Barb.Rodr., Guanabanus muricatus (L.) M.Gómez in Rain-tree) is a broadleaf flowering evergreen tree native to the Caribbean, Central and South America, from Brazil north to the West Indies. It is in the same genus as the cherimoya and the same family as the pawpaw.
The Soursop is adapted to areas of high humidity and relatively warm winters, temperatures below 5 °C will cause damage to leaves and small branches, and temperatures below 3 °C can be fatal.
Comparisons of its flavor range from strawberry and pineapple mixed together to sour citrus flavour notes contrasting with an underlying creamy roundness of flavour reminiscent of coconut or banana. The fruit is somewhat difficult to eat, as the white interior pulp is studded with many large seeds, and pockets of soft flesh are bounded by fibrous membranes. The soursop is therefore usually juiced rather than eaten directly.
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[edit] Cultivation and uses
The plant is grown as a commercial crop for its 20-30 cm long prickly green fruit, which can have a mass of up to 2.5 kg.
Away from its native area, there is some limited production as far north as southern Florida within USDA zone 10; however these are mostly garden plantings for local consumption. It is also grown in parts of southeastern Asia. The Soursop will reportedly fruit as a container specimen, even in temperate climates if protected from cool temperatures.
The flesh of the fruit consists of an edible white pulp and a core of undigestible black seeds. The species is the only member of genus Annona which is suitable for processing and preservation. The sweet pulp is used to make juice as well as candies, sorbets and ice cream flavorings.
Nutritionally, the fruit is high in carbohydrates, particularly fructose. The fruit also contains significant amounts of vitamin C, vitamin B1, and vitamin B2. The fruit, seeds, and leaves have a number of herbal medicinal uses among indigenous peoples of regions where the plant is common.
In the Caribbean it is believed that laying the leaves of the soursop on a bed below a sleeping person with a fever will break the fever by the next morning. Also, boiling the leaves and drinking as a tea helps induce sleep [1] .
[edit] Health risks
Research carried out in the Caribbean has established a connection between consumption of soursop and atypical forms of Parkinson's disease due to the very high concentration of Annonacin.[2]
[edit] External links
- (Portuguese) Correia, M. P., (1984) Dicionário das plantas úteis do Brasil
- Description of soursop from Fruits of Warm Climates (1987, ISBN 0-9610184-1-0)
- Sorting Annona names
- Soursop / Guyabano Fruit Nutrition
- Rain-tree: Annona muricata
[edit] References
- ^ Tropical Plant Database:GRAVIOLA (Annona muricata). Raintree Nutrition. Retrieved on 13th December 2006.
- ^ Lannuzel, A; et al. (6th October 2003). "The mitochondrial complex i inhibitor annonacin is toxic to mesencephalic dopaminergic neurons by impairment of energy metabolism". Neuroscience 121 (2): 287-296. Retrieved on 13th December 2006.
