Irvingia gabonensis | |
---|---|
Ogbono nuts | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Malpighiales |
Family: | Irvingiaceae |
Genus: | Irvingia |
Species: | I. gabonensis |
Binomial name | |
Irvingia gabonensis (Aubry-Lecomte ex O'Rorke) Baill. | |
Natural occurrence of Irvingia gabonensis in Africa | |
Synonyms | |
Irvingia barteriHook.f. Contents |
Irvingia gabonensis is a species of African trees in the genus Irvingia , sometimes known by the common names wild mango, African mango, or bush mango. They bear edible mango-like fruits, and are especially valued for their fat- and protein-rich nuts.
Irvingia gabonensis is indigenous to the humid forest zone from the northern tip of Angola, including Congo, DR Congo, Nigeria, Ivory Coast and south-western Uganda. [2] [3] Since 2009, the Gabonese government has prohibited logging of the andok tree until 2034. [4]
The tree is present in the tropical wet and dry climate zone. [5] African bush mango grows naturally in canopied jungle, gallery forests and semi-deciduous forests. It grows at altitudes from 200–500 m (660–1,640 ft) with annual rainfalls from 1,200–1,500 mm (47–59 in). [2] Supported temperature ranges from 20–38 °C (68–100 °F) . Soils more than 150 cm (59 in) deep are needed, with a moderate fertility and good drainage. pH can range from 4.5 to 7.5.
Irvingia gabonensis grows straight, up to a height of 40 m (130 ft) and 1 m (3 ft 3 in) in diameter. [2] It has buttresses to a height of 3m (10 ft). The outer bark is smooth to scaly with grey to yellow-grey color. The crown is evergreen, spherical and dense. Leaves are elliptic, one margin is often a little rounder than the other, acuminate, dark green and glossy on the upper surface. Flowers are yellow to greenish-white in small panicles. [2] The flowers are bisexual. The fruit is nearly spherical, green when ripe with a bright orange pulp. The stone is woody and contains one seed. Seeds germinate epigeally (above ground). [2]
Irvingia gabonensis is insect-pollinated by Coleoptera, Diptera, Hymenoptera and Lepidoptera. [2] It flowers from March to June and has two fruiting seasons: from April to July and from September to October. [3] Seeds are dispersed by vertebrates, including elephants and gorillas. With a reduction in the number of those animals, the spread and regeneration of African bush mango decreases and it becomes more dependent on human planting. [6]
In the past, 90% of African bush mango products were harvested from scattered, wild trees. [3] African bush mango trees were not cultivated initially, because it was believed, that it took up to 15 years for a tree to bear fruit. Although they were not artificially planted, their occurrence was high because they were also rarely harvested for timber. In a plantation using marcots (air-layering plants), flower production was observed within two to four years after planting. [3] Germination from seeds is low and when they are not handled appropriately, most fail. [3] The seeds are mostly extracted by breaking fruits by hand. [3]
The domestication of African bush mango is in its early stages. [3] Around 1990, vegetative propagation allowed mass replication and selection. Grafting, budding, air-layering, marcotting and cuttings are feasible when they are applied to young wood. [3]
The fruits are often eaten fresh by humans and other mammals such as monkeys, gorillas, elephants and many more. As it is naturally and predominantly found in parts of Africa, it has been popularly called African mango. [2] The fruits are processed into jelly, jam, juice and sometimes even wine. [5] The pulp has also been used to prepare black dye for cloth coloration.
The seed coat has to be cracked open to get to the endosperm. Seeds, also called dika nuts, are eaten raw or roasted. Mostly however they are pounded to butter- or a chocolate-like block. [6] Seeds can be pressed to produce an edible oil (solid at ambient temperatures) or margarine used for cooking. The oil can also be processed further to soap or cosmetics. [6] The press cake can be used as cattle feed or as thickening agent for soup. Seeds can be ground or crushed and used as a thickening and flavoring agent in soups and stews. [2] They can also be made into a cake called "dika bread" for preservation. [2]
The nuts are often used in the Gabonese cuisine to season poultry and meat dishes, such as the poulet à l'odika. The ground nuts provide a smoked scent to the meals.
The wood is hard and therefore used for heavy construction work as making ships' decks or railway ties. [2] Dead branches are used as firewood. [6]
The trees are used in agroforestry systems to shade other crops, especially cocoa and coffee. They are also used to reduce erosion. Cities have started using them to shade streets, as shelter belts, or for beautification.
Thousands of tons of African bush mango seeds are traded each year, mostly within Africa. [7]
The edible seeds provide 697 calories in a 100 gram portion and the following nutrients: [6]
Fat | 67 g |
Carbohydrate | 15 g |
Protein | 8.5 g |
Water | 4 g |
Calcium | 120 mg |
Iron | 2.4 mg |
The approximate fatty acid composition in seeds includes myristic acid (33–70%), lauric acid (20–59%), oleic acid (1–11%), palmitic acid (2%) and stearic acid (1%). [6]
Unlike the pulp of some other Irvingia spp., the pulp of Irvingia gabonensis tastes juicy and sweet and is eaten fresh. A 100 gram portion of fruit pulp provides 61 calories and includes:
Water | 81 g |
Carbohydrate | 15.7 g |
Protein | 0.9 g |
Fat | 0.2 g |
Phosphorus | 40 mg |
Calcium | 20 mg |
Vitamin C | 7 mg |
Iron | 2 mg |
Fruit pulp flavor components include zingiberene, cinnamic acid, dodecanal and dodecanol, resulting in spicy, earthy, fruity, and wine-yeast characteristics. [6]
Food supplements from Irvingia gabonensis, under the name "African mango" are marketed for management of body weight. Clinical trials to date have not confirmed their efficacy, although a meta-analysis concluded that Irvingia gabonensis showed "some potential benefit for weight loss", [8] stating that "it appears to be safe and well tolerated as the most common adverse effects are headache, flatulence, and difficulty sleeping" but that "due to the limited data, Irvingia gabonensis cannot be recommended at this time." [8]
A mango is an edible stone fruit produced by the tropical tree Mangifera indica. It is believed to have originated between northwestern Myanmar, Bangladesh, and northeastern India. M. indica has been cultivated in South and Southeast Asia since ancient times resulting in two types of modern mango cultivars: the "Indian type" and the "Southeast Asian type". Other species in the genus Mangifera also produce edible fruits that are also called "mangoes", the majority of which are found in the Malesian ecoregion.
Mangifera is a genus of flowering plants in the cashew family, Anacardiaceae. It contains approximately 69 species, with the best-known being the Common Mango. The center of diversity of the genus is in the Malesian ecoregion of Southeast Asia; particularly in Sumatra, Borneo, and the Malay peninsula. They are generally canopy trees in lowland rainforests, reaching a height of 30–40 m (98–131 ft).
The cashew tree is a tropical evergreen tree native to South America in the genus Anacardium that produces the cashew seed and the cashew apple accessory fruit. The tree can grow as tall as 14 metres, but the dwarf cultivars, growing up to 6 m (20 ft), prove more profitable, with earlier maturity and greater yields. The cashew seed is commonly considered a snack nut eaten on its own, used in recipes, or processed into cashew cheese or cashew butter. Like the tree, the nut is often simply called a cashew. Cashew allergies are triggered by the proteins found in tree nuts, and cooking often does not remove or change these proteins.
Vitellaria paradoxa, commonly known as shea tree, shi tree, or vitellaria, is a tree of the family Sapotaceae. It is the only species in the genus Vitellaria, and is indigenous to Africa.
The jackfruit, also known as the jack tree, is a species of tree in the fig, mulberry, and breadfruit family (Moraceae). Its origin is in the region between the Western Ghats of southern India, all of Bangladesh, Sri Lanka, and the rainforests of the Philippines, Indonesia, and Malaysia.
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.
Adansonia is a genus made up of eight species of medium-to-large deciduous trees known as baobabs. They are placed in the Malvaceae family, subfamily Bombacoideae. They are native to Madagascar, mainland Africa, and Australia. The trees have also been introduced to other regions such as Asia. The generic name honours Michel Adanson, the French naturalist and explorer who described Adansonia digitata. The baobab is also known as the "upside down tree", a name that originates from several myths. They are among the most long-lived of vascular plants and have large flowers that are reproductive for a maximum of 15 hours. The flowers open around dusk, opening so quickly that movement can be detected by the naked eye, and are faded by the next morning. The fruits are large, oval to round and berry-like and hold kidney-shaped seeds in a dry, pulpy matrix.
Spondias purpura is a species of flowering plant in the cashew family, Anacardiaceae, that is native to tropical regions of the Americas, from Mexico to Brazil. It is also very common in most of the Caribbean islands. It is commonly known as jocote, which derives from the Nahuatl word xocotl, meaning any kind of sour or acidic fruit. Other common names include red mombin, plum, purple mombin, hog plum, ciriguela, ceriguela, seriguela, siriguela (Brazil) cocota, ciruela huesito (Colombia), ciruela, ciruela traqueadora (Panama), ciriguela, cirigüela, cirguela, cirguelo (Ecuador), makapruim, and siniguelas (Philippines). It is a popular fruit throughout Central America, particularly in El Salvador, Nicaragua, Honduras and in Costa Rica.
Canarium ovatum, the pili, is a species of tropical tree belonging to the genus Canarium. It is one of approximately 600 species in the family Burseraceae. C. ovatum are native to the Philippines. They are commercially cultivated in the Philippines for their edible nuts and is believed to be indigenous to that country. The fruit and tree are often vulgarized with the umbrella term of "Java almond" which mixes multiple species of the same genus, Canarium.
Dacryodes edulis is a fruit tree in the Burseraceae family native to Africa. Its various regional names include safou, plum (Cameroon), atanga, ube, elumi (Nigeria), African pear, bush pear, African plum, nsafu, bush butter tree, or butterfruit.
Adansonia grandidieri is the biggest and most famous of Madagascar's six species of baobabs. It is sometimes known as Grandidier's baobab or the giant baobab. In French it is called Baobab malgache. The local name is renala or reniala. This tree is endemic to the island of Madagascar, where it is an endangered species threatened by the encroachment of agricultural land. This is the tree found at the Avenue of the Baobabs.
Parkia biglobosa, known in English as the African locust bean, is a perennial deciduous tree in the family Fabaceae. It is found in a wide range of environments in Africa and is primarily grown for its pods that contain both a sweet pulp and valuable seeds. Where the tree is grown, the crushing and fermenting of these seeds constitutes an important economic activity. Various parts of the locust bean tree are used for medicinal and food purposes. As a standing tree, locust bean may have a positive effect on the yield of other nearby crops.
Balanites aegyptiaca is a species of tree, classified as a member of either the Zygophyllaceae or the Balanitaceae. This tree is native to much of Africa and parts of the Middle East.
Treculia africana is a tree species in the genus Treculia which can be used as a food plant and for various other traditional uses. The fruits are hard and fibrous, can be the size of a volleyball and weight up to 8.5 kg (19 lb). Chimpanzees have been observed to use tools to break the fruits into small pieces that they can eat. The fruits contain polyphenols.
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.
Irvingia is a genus of African and Southeast Asian trees in the family Irvingiaceae, sometimes known by the common names wild mango, African mango, bush mango, dika, mbukpap uyo or ogbono. They bear edible mango-like fruits, and are especially valued for their fat- and protein-rich nuts.
Ximenia caffra, the sourplum, is a small tree or small shrub that is thinly branched. It is part of the Olacaceae family which is native throughout tropical regions. In particular, the sourplum is native to regions in South East Africa, mainly Botswana, Kenya, Malawi, Mozambique, South Africa, Tanzania, Uganda, Zambia, and Zimbabwe. The sourplum tree produces several fruits on an annual basis. These are generally sour with a dry aftertaste, and they contain significant amounts of potassium. The tree itself is fairly hardy, with frost resistance and drought tolerance. The tree, fruit, seed, leaves, and roots are all used for human consumption, medicinally, or for fuel. The trees themselves can also be used as natural land division barriers.
Balanites rotundifolia, known in Swahili as Mbamba ngoma is a spiny bush or small tree from eastern Africa and southern Arabia. It is a member of the caltrop family, Zygophyllaceae.
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