Vitellaria | |
---|---|
Shea tree | |
Shea nuts | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Ericales |
Family: | Sapotaceae |
Subfamily: | Sapotoideae |
Genus: | Vitellaria C.F.Gaertn. |
Species: | V. paradoxa |
Binomial name | |
Vitellaria paradoxa C.F.Gaertn. | |
Synonyms | |
Butyrospermum paradoxa |
Vitellaria paradoxa (formerly Butyrospermum parkii), commonly known as shea tree, shi tree ( /ˈʃiː(ə)/ ), or vitellaria, is a tree of the family Sapotaceae. It is the only species in the genus Vitellaria, [2] and is indigenous to Africa.
The shea fruit consists of a thin, tart, nutritious pulp that surrounds a relatively large, oil-rich seed from which shea butter is extracted. It is a deciduous tree usually 7–15 m (23–49 ft) tall, but has reached 25 m (82 ft) and a trunk diameter of 2 m (6.6 ft).
The shea tree is a traditional African food plant. It has been claimed to have potential to improve nutrition, boost food supply in the "annual hungry season", [3] foster rural development, and support sustainable land care. [4]
The tree starts bearing its first fruit when it is 10 to 15 years old; full production is attained when the tree is about 20 to 30 years old. It then produces nuts for up to 200 years.
The fruits resemble large plums 4 to 8 centimetres long weighing between 10 and 57 grams each. [5] These fruits take 4 to 6 months to ripen; the average yield is 15 to 20 kg (33 to 44 lb) of fresh fruit per tree, with optimum yields up to 45 kilograms (99 pounds). Each kilogram of fruit gives approximately 400 grams (14 ounces) of dry seeds. The fruit is edible.
The shea tree grows naturally in the wild in the dry savannah belt of West and South from Senegal in the west to Sudan and South Sudan in the east, and onto the foothills of the Ethiopian highlands. It occurs in 19 countries across the African continent, namely Benin, Burkina Faso, Cameroon, Central African Republic, Chad, Ethiopia, Ghana, Guinea Bissau, Ivory Coast, Mali, Niger, Nigeria, Senegal, Sierra Leone, South Sudan, Sudan, Togo, Uganda, Democratic Republic of the Congo, and Guinea. The habitat area extends over more than 5,000 kilometres (3,100 mi). [8]
A testa found at the site of the medieval village of Saouga is evidence of shea butter production by the 14th century. [9]
Shea butter has many uses and may or may not be refined. In the West it is most commonly used as an emollient in cosmetics and is less commonly used in food. Throughout Africa it is used extensively for food, is a major source of dietary fat, and for medicinal purposes. In Ghana and Nigeria, shea butter is a major ingredient for making the African black soap.
The edible protein-rich caterpillars of the moth Cirina butyrospermi which feed solely on its leaves are widely collected [10] and eaten raw, dried or fried.
Shea butter extract is a complex fat that in addition to many nonsaponifiable components (substances that cannot be fully converted into soap by treatment with alkali) contains the following fatty acids: oleic acid (40–60%), stearic acid (20–50%), linoleic acid (3–11%), palmitic acid (2–9%), linolenic acid (<1%) and arachidic acid (<1%). [11] It also contains the vitamins A, E and F.[ citation needed ]
The common name is shíyiri (in N'Ko: ߛ߭ߌ߭ߦߌߙߌ) or shísu (ߛ߭ߌ߭ߛߎ, lit. "shea tree") in the Bambara language of Mali. This is the origin of the English word, whose primary pronunciation is /ʃiː/ (rhyming with "tea"), although the pronunciation /ʃeɪ/ (rhyming with "day") is common and is listed second in major dictionaries. The tree is called ghariti in the Wolof language of Senegal, which is the origin of the French name of the tree and the butter, karité.
In Hausa language the tree is called Kaɗe or Kaɗanya. Indeed, the shea tree is so indispensable in Mole-Dagbang culinary and ethno-botanical practices that the Northern Ghanaian city of Tamale etymologically derives its name from the more traditional Dagomba name 'Tama-yile' (meaning 'Home of Shea nuts').
The tree was formerly classified in the genus Butyrospermum, meaning "butter seed". The species name parkii honors Scottish explorer Mungo Park, who learned of the tree while exploring Senegal. Park's Scottish origin is reflected in the English word shea, with a final -ea.[ further explanation needed ]
The pistachio, a member of the cashew family, is a small tree originating in Persia. The tree produces seeds that are widely consumed as food. The word can be countable or uncountable, meaning its plural is with or without an 's'.
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Sclerocarya birrea, commonly known as the marula, is a medium-sized deciduous fruit-bearing tree, indigenous to the miombo woodlands of Southern Africa, the Sudano-Sahelian range of West Africa, the savanna woodlands of East Africa and Madagascar.
The Sapotaceae are a family of flowering plants belonging to the order Ericales. The family includes about 800 species of evergreen trees and shrubs in around 65 genera. Their distribution is pantropical.
Shea butter is a fat extracted from the nut of the African shea tree. It is ivory in color when raw and commonly dyed yellow with borututu root or palm oil. It is widely used in cosmetics as a moisturizer, salve or lotion. It is edible and is used in food preparation in some African countries. It is occasionally mixed with other oils as a substitute for cocoa butter, although the taste is noticeably different.
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Dacryodes edulis is a fruit tree in the Burseraceae family native to Africa. Its various regional names include safou, messa, plum (Cameroon), atanga, ube, elumi (Nigeria), African pear, bush pear, African plum, nsafu, bush butter tree, or butterfruit.
Burkina Faso is largely wild bush country with a mixture of grass and small trees in varying proportions. The savanna region is mainly grassland in the rainy season and semi desert during the harmattan period. Fauna, one of the most diverse in West Africa, includes the elephant, hippopotamus, buffalo, monkey, lions, crocodile, giraffe, various types of antelope, and a vast variety of bird and insect life. The country has 147 mammal species, 330 aquatic species including 121 species of fish and 2067 different plant species. Of the plant species, the dominant endemic species are shea tree and the baobab, the former plant species has immense economic value to the country.
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Vitellaria paradoxa is extremely important in Burkina Faso. Termed "women's gold" by Burkinabé villagers, the nuts of shea tree can be collected and processed by crushing and grinding to yield shea butter, which is widely used in soap and in cosmetics as a moisturizer, salve, or lotion. Shea butter is also edible and may be used in food preparation; it is sometimes used in the manufacture of chocolate. The bark of the tree is also used as an ingredient in traditional medicines and the shell of nut is said to be able to repel mosquitoes and is also said to protect existing trees.
Detarium microcarpum, commonly known as sweet detar, sweet dattock or tallow tree, is an underutilized species of tree legume that grows naturally in the drier regions of West and Central Africa. It has a wide range of uses due to its medicinal properties, edible fruit and hardwood, which is used as fuel. This makes it valuable and appreciated by local communities, but further research and effort are needed for its domestication.
Allanblackia oil is a vegetable oil that comes from the seeds of trees of the genus Allanblackia. This tree can be found in the wet tropical belt of Africa. Because of its unique blend of fatty acids, the oil from Allanblackia seeds has melting properties that make it excellent to use as structuring fat in food products, e.g. margarines.
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