Shea nut
   HOME

TheInfoList



OR:

''Vitellaria paradoxa'' (formerly ''Butyrospermum parkii''), commonly known as shea tree, shi tree (, also ), or vitellaria, is a tree of the family
Sapotaceae 240px, '' Madhuca longifolia'' var. ''latifolia'' in Narsapur, Medak district, India The Sapotaceae are a family of flowering plants belonging to the order (biology)">order Ericales">family (biology)">family of flowering plants belonging to th ...
. It is the only species in the genus ''Vitellaria'',''Vitellaria paradoxa''.
AgroForestry Tree Database. World Agroforestry Centre.
and is indigenous to
Africa Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surfac ...
. The shea fruit consists of a thin, tart, nutritious pulp that surrounds a relatively large, oil-rich seed from which
shea butter Shea butter ( , , or ; ) is a fat (triglyceride; mainly oleic acid and stearic acid) extracted from the nut of the African shea tree ('' Vitellaria paradoxa''). It is ivory in color when raw and commonly dyed yellow with borututu root or ...
is extracted. It is a deciduous tree usually tall, but has reached and a trunk diameter of . The shea tree is a traditional African food plant. It has been said to have potential to improve nutrition, boost food supply in the "annual hungry season", foster rural development, and support sustainable land care.


Description

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
plum A plum is a fruit of some species in Prunus subg. Prunus, ''Prunus'' subg. ''Prunus'.'' Dried plums are often called prunes, though in the United States they may be labeled as 'dried plums', especially during the 21st century. Plums are ...
s 4 to 8 centimetres long weighing between 10 and 57 grams each. These fruits take 4 to 6 months to ripen; the average yield is of fresh fruit per tree, with optimum yields up to . Each kilogram of fruit gives approximately of dry seeds. The fruit is edible.


Nomenclature and taxonomy

''Vitellaria'' is a monotypic genus, i.e., it comprises only one species. The species has variously been known botanically as ''Vitellaria paradoxa'', ''Butyrospermum parkii'', and ''Butyrospermum paradoxum''. Many botanical works from the late 19th and much of the 20th centuries used the name ''Butyrospermum parkii'', which is still commonly found in the cosmetics trade. However, ''Vitellaria paradoxa'' is the oldest name (published in 1807) and has been generally used in recent decades, as necessitated by the rules of botanical nomenclature; efforts in 1962 to make ''Butyrospermum'' the official scientific name for the genus (i.e., to "conserve" the name) were unsuccessful.Lovett, P. N. 2015 Shea butter: properties and processing for food use. In Talbot, G. (ed.) ''Specialty Oils and Fats in Foods and Nutrition.'' Elsevier. pp. 125–158. The species comprises two subspecies: ''Vitellaria paradoxa'' subsp. ''paradoxa''  (roughly from the Nigeria-Cameroon border westward). ''Vitellaria paradoxa'' subsp. ''nilotica'' (Kotschy) A.N. Henry & Chithra & N.C. Nair (roughly from the Nigeria-Cameroon border eastward).


Distribution and habitat

The shea tree grows naturally in the wild in the dry
savannah A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) biome and ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach th ...
belt of West and South from Senegal in the west to
Sudan Sudan, officially the Republic of the Sudan, is a country in Northeast Africa. It borders the Central African Republic to the southwest, Chad to the west, Libya to the northwest, Egypt to the north, the Red Sea to the east, Eritrea and Ethiopi ...
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 Benin, officially the Republic of Benin, is a country in West Africa. It was formerly known as Dahomey. It is bordered by Togo to the west, Nigeria to the east, Burkina Faso to the north-west, and Niger to the north-east. The majority of its po ...
,
Burkina Faso Burkina Faso is a landlocked country in West Africa, bordered by Mali to the northwest, Niger to the northeast, Benin to the southeast, Togo and Ghana to the south, and Ivory Coast to the southwest. It covers an area of 274,223 km2 (105,87 ...
,
Cameroon Cameroon, officially the Republic of Cameroon, is a country in Central Africa. It shares boundaries with Nigeria to the west and north, Chad to the northeast, the Central African Republic to the east, and Equatorial Guinea, Gabon, and the R ...
,
Central African Republic The Central African Republic (CAR) is a landlocked country in Central Africa. It is bordered by Chad to Central African Republic–Chad border, the north, Sudan to Central African Republic–Sudan border, the northeast, South Sudan to Central ...
,
Chad Chad, officially the Republic of Chad, is a landlocked country at the crossroads of North Africa, North and Central Africa. It is bordered by Libya to Chad–Libya border, the north, Sudan to Chad–Sudan border, the east, the Central Afric ...
,
Ethiopia Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the east, Ken ...
,
Ghana Ghana, officially the Republic of Ghana, is a country in West Africa. It is situated along the Gulf of Guinea and the Atlantic Ocean to the south, and shares borders with Côte d’Ivoire to the west, Burkina Faso to the north, and Togo to t ...
, Guinea Bissau,
Ivory Coast Ivory Coast, also known as Côte d'Ivoire and officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital city of Yamoussoukro is located in the centre of the country, while its largest List of ci ...
,
Mali Mali, officially the Republic of Mali, is a landlocked country in West Africa. It is the List of African countries by area, eighth-largest country in Africa, with an area of over . The country is bordered to the north by Algeria, to the east b ...
,
Niger Niger, officially the Republic of the Niger, is a landlocked country in West Africa. It is a unitary state Geography of Niger#Political geography, bordered by Libya to the Libya–Niger border, north-east, Chad to the Chad–Niger border, east ...
,
Nigeria Nigeria, officially the Federal Republic of Nigeria, is a country in West Africa. It is situated between the Sahel to the north and the Gulf of Guinea in the Atlantic Ocean to the south. It covers an area of . With Demographics of Nigeria, ...
,
Senegal Senegal, officially the Republic of Senegal, is the westernmost country in West Africa, situated on the Atlantic Ocean coastline. It borders Mauritania to Mauritania–Senegal border, the north, Mali to Mali–Senegal border, the east, Guinea t ...
,
Sierra Leone Sierra Leone, officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered to the southeast by Liberia and by Guinea to the north. Sierra Leone's land area is . It has a tropical climate and envi ...
,
South Sudan South Sudan (), officially the Republic of South Sudan, is a landlocked country in East Africa. It is bordered on the north by Sudan; on the east by Ethiopia; on the south by the Democratic Republic of the Congo, Uganda and Kenya; and on the ...
,
Sudan Sudan, officially the Republic of the Sudan, is a country in Northeast Africa. It borders the Central African Republic to the southwest, Chad to the west, Libya to the northwest, Egypt to the north, the Red Sea to the east, Eritrea and Ethiopi ...
,
Togo Togo, officially the Togolese Republic, is a country in West Africa. It is bordered by Ghana to Ghana–Togo border, the west, Benin to Benin–Togo border, the east and Burkina Faso to Burkina Faso–Togo border, the north. It is one of the le ...
,
Uganda Uganda, officially the Republic of Uganda, is a landlocked country in East Africa. It is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the ...
,
Democratic Republic of the Congo The Democratic Republic of the Congo (DRC), also known as the DR Congo, Congo-Kinshasa, or simply the Congo (the last ambiguously also referring to the neighbouring Republic of the Congo), is a country in Central Africa. By land area, it is t ...
, and
Guinea Guinea, officially the Republic of Guinea, is a coastal country in West Africa. It borders the Atlantic Ocean to the west, Guinea-Bissau to the northwest, Senegal to the north, Mali to the northeast, Côte d'Ivoire to the southeast, and Sier ...
. The habitat area extends over more than . A testa found at the site of the medieval village of Saouga is evidence of shea butter production by the 14th century.


Uses

Shea butter Shea butter ( , , or ; ) is a fat (triglyceride; mainly oleic acid and stearic acid) extracted from the nut of the African shea tree ('' Vitellaria paradoxa''). It is ivory in color when raw and commonly dyed yellow with borututu root or ...
has many uses and may or may not be refined. In the West it is most commonly used as an
emollient A moisturizer, or emollient, is a cosmetic preparation used for protecting, moisturizing, and lubricating the skin. These functions are normally performed by sebum produced by healthy skin. The word "emollient" is derived from the Latin verb ''mo ...
in
cosmetics Cosmetics are substances that are intended for application to the body for cleansing, beautifying, promoting attractiveness, or altering appearance. They are mixtures of chemical compounds derived from either Natural product, natural source ...
and is less commonly used in food. Throughout Africa it is used extensively for food, is a major source of dietary
fat In nutrition science, nutrition, biology, and chemistry, fat usually means any ester of fatty acids, or a mixture of such chemical compound, compounds, most commonly those that occur in living beings or in food. The term often refers specif ...
, 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 collectedNikiema, A. & Umali, B.E. "Vitellaria paradoxa C.F. Gaertn.". - In: Van der Vossen, H.A.M. & Mkamilo, G.S. (eds.) "Plant resources of tropical Africa 14 : vegetable oils". - Wageningen : PROTA Foundation; Leiden : Backhuys; Wageningen : CTA, 2007. - 236 p. - p.182-187. and eaten raw, dried or fried.


Composition of shea butter

Shea butter extract is a complex fat that in addition to many nonsaponifiable components (substances that cannot be fully converted into
soap Soap is a salt (chemistry), salt of a fatty acid (sometimes other carboxylic acids) used for cleaning and lubricating products as well as other applications. In a domestic setting, soaps, specifically "toilet soaps", are surfactants usually u ...
by treatment with
alkali In chemistry, an alkali (; from the Arabic word , ) is a basic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0. The a ...
) contains the following
fatty acids In chemistry, in particular in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, ...
:
oleic acid Oleic acid is a fatty acid that occurs naturally in various animal and vegetable fats and oils. It is an odorless, colorless oil, although commercial samples may be yellowish due to the presence of impurities. In chemical terms, oleic acid is cl ...
(40–60%),
stearic acid Stearic acid ( , ) is a saturated fatty acid with an 18-carbon chain. The IUPAC name is octadecanoic acid. It is a soft waxy solid with the formula . The triglyceride derived from three molecules of stearic acid is called stearin. Stearic acid ...
(20–50%),
linoleic acid Linoleic acid (LA) is an organic compound with the formula . Both alkene groups () are ''cis''. It is a fatty acid sometimes denoted 18:2 (n−6) or 18:2 ''cis''-9,12. A linoleate is a salt or ester of this acid. Linoleic acid is a polyunsat ...
(3–11%),
palmitic acid Palmitic acid (hexadecanoic acid in IUPAC nomenclature) is a fatty acid with a 16-carbon chain. It is the most common saturated fatty acid found in animals, plants and microorganisms.Gunstone, F. D., John L. Harwood, and Albert J. Dijkstra. The ...
(2–9%),
linolenic acid Linolenic acid is a type of naturally-occurring fatty acid. It can refer to either of two octadecatrienoic acids (i.e. with an 18-carbon chain and three double bonds, which are found in the '' cis'' configuration), or a mixture of the two. Lino ...
(<1%) and
arachidic acid Arachidic acid, also known as icosanoic acid, is a saturated fatty acid with a 20-carbon chain. It is a minor constituent of cupuaçu butter (7%), perilla oil (0–1%), peanut oil (1.1–1.7%), corn oil (3%),U.S. Department of Agriculture, Agric ...
(<1%). It also contains the vitamins A, E and F.


Etymology

The common name is ''shíyiri'' (in
N'Ko NKo (ߒߞߏ), also spelled N'Ko, is an alphabetic script devised by Solomana Kante, Solomana Kanté in 1949, as a modern writing system for the Manding languages of West Africa. The term ''NKo'', which means ''I say'' in all Manding languages, i ...
: ) or ''shísu'' (, lit. "shea tree") in the
Bambara language Bambara, also known as Bamana (N'Ko script: ) or Bamanankan (N'Ko script: ; Arabic script: ), is a lingua franca and national language of Mali spoken by perhaps 14 million people, natively by 4.2 million Bambara people and about 10 million ...
of
Mali Mali, officially the Republic of Mali, is a landlocked country in West Africa. It is the List of African countries by area, eighth-largest country in Africa, with an area of over . The country is bordered to the north by Algeria, to the east b ...
. This is the origin of the English word, whose primary pronunciation is (rhyming with "tea"), although the pronunciation (rhyming with "day") is common and is listed second in major dictionaries. The tree is called ''ghariti'' in the
Wolof language Wolof ( ; , ) is a Niger–Congo language spoken by the Wolof people in much of the West African subregion of Senegambia that is split between the countries of Senegal, The Gambia and Mauritania. Like the neighbouring languages Serer and Fula, ...
of
Senegal Senegal, officially the Republic of Senegal, is the westernmost country in West Africa, situated on the Atlantic Ocean coastline. It borders Mauritania to Mauritania–Senegal border, the north, Mali to Mali–Senegal border, the east, Guinea t ...
, which is the origin of the French name of the tree and the butter, ''karité''. In
Hausa language Hausa (; / ; Hausa Ajami, Ajami: ) is a Chadic language spoken primarily by the Hausa people in the northern parts of Nigeria, Ghana, Cameroon, Benin and Togo, and the southern parts of Niger, and Chad, with significant minorities in Ivory Coas ...
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 Senegal, officially the Republic of Senegal, is the westernmost country in West Africa, situated on the Atlantic Ocean coastline. It borders Mauritania to Mauritania–Senegal border, the north, Mali to Mali–Senegal border, the east, Guinea t ...
. Park's Scottish origin is reflected in the English word shea, with a final -ea.


References


External links


Vitellaria paradoxa.
In: Brunken, U., et al. 2008. ''West African Plants — A Photo Guide''. Forschungsinstitut Senckenberg, Frankfurt/Main. {{Authority control Crops originating from Africa Flora of Ivory Coast Trees of Africa Cosmetics chemicals Sapotoideae Monotypic Ericales genera Sapotaceae genera Taxa named by Karl Friedrich von Gaertner