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Argania | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Ericales |
Family: | Sapotaceae |
Subfamily: | Sapotoideae |
Genus: | Argania Roem. & Schult. |
Species: | A. spinosa |
Binomial name | |
Argania spinosa (L.), Skeels | |
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Native range of A. spinosa | |
Synonyms [1] | |
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Argania is a genus of flowering plants containing the sole species Argania spinosa, known as argan (Tashelhit : ⴰⵔⴳⴰⵏ, romanized: argan), a tree endemic to the calcareous semi-desert Sous valley of southwestern Morocco and to the region of Tindouf in southwestern Algeria. [1] [2] Argan trees grow to 8–10 m (26–33 ft) high and live up to approximately 200 years. They are thorny, with gnarled trunks and wide spreading crown. The crown has a circumference of about 70 m (230 ft) and the branches lean towards the ground.
The scientific name Argania is derived from argan, the name of the tree in Shilha, the Berber language which is spoken by the majority of the people living in the areas where the tree is endemic. Shilha Berber has a rich vocabulary for the various parts of the fruit, its stages of ripeness, and its harvesting and processing. The oil is called argan oil. In medieval Arabic pharmacological sources, the tree is known as harjān, a distortion of the Berber word argan.
The leaves are small, 2–4 cm (0.79–1.57 in) long, and oval with a rounded apex. The flowers are small, with five pale yellow-green petals; flowering in April. The fruit is 2–4 cm (0.79–1.57 in) long and 1.5–3 cm (0.59–1.18 in) broad, with a thick, bitter peel surrounding a sweet-smelling but unpleasantly flavored layer of pulpy pericarp. This surrounds the very hard nut, which contains one (occasionally two or three) small, oil-rich seeds. The fruit takes over a year to mature, ripening in June to July of the following year.
The argan tree used to grow throughout North Africa, but today it only grows in southwestern Morocco. Argan is perfectly adapted to the region’s harsh environment, with the ability to survive extreme heat (over 50°C), drought and poor soil. Although numbers are dwindling, argan is the second most abundant tree in Moroccan forests, with over twenty million trees living in the region and playing a vital role in the food chain and environment. The tree’s roots grow deep into the ground in search of water, which helps bind soil and prevents erosion. Much of the region has resisted the advance of the Sahara desert due to the argan tree, and it therefore plays an irreplaceable part in the ecological balance of the region. [3]
In Morocco, arganeraie forests now only cover some 8,280 km2 (3,200 sq mi) and are designated as a UNESCO biosphere reserve. Their area has shrunk by about half during the last 100 years, due to charcoal making, grazing, increasingly intensive cultivation and the expansion of urban and rural settlements. Livestock numbers have increased substantially, with signs of overgrazing and over browsing in the argan forest. Browsing directly harms the existing, mature argan trees as goats will climb high into the branches of an argan tree to reach its fruit. Overgrazing can cause soil erosion, affects the microclimate of the forest by reducing ground cover and surface humidity and increasing temperature, and impedes the long term regeneration of the forest. [4]
The best hope for the conservation of the trees may lie in the recent development of a thriving export market for argan oil as a high-value product. However, the wealth brought by argan oil export has also created threats to argan trees in the form of increased goat population. Locals use the newfound wealth to buy more goats and the goats stunt the growth of the argan trees by climbing up and eating their leaves and fruit. It is reported that the display of the tree climbing goats is staged or faked in areas popular with tourists, as the goats only very infrequently climb the trees without human intervention. [5] [6]
Argan is also grown in the Arabah and Negev regions of Israel. [7] [8] [9]
The organ tree has played a role in the cultures of the Berber and Arab people living there for hundreds of years. Argan is a multi-purpose tree and each part of it is usable as a food or economic resource. The fruit can be eaten, oil can be extracted from the nuts and the tree’s wood can be used for fuel. The tree has therefore played a vital socio-economic role in local culture, and currently provides a significant source of food and income for around three million people, over two million of which live in rural areas. [3] [4]
In some parts of Morocco, argan takes the place of the olive as a source of forage, oil, timber, and fuel in Berber society.
Argan fruit falls in July, when they are black and dry. Until this happens, goats are kept out of the argan woodlands by wardens. Rights to collect the fruit are controlled by law and village traditions. The "nuts" are gathered after fruit consumption and spat out by ruminating goats. Seeds being spat out by the goats constitutes one mechanism of seed dispersal. [10]
Argan oil is produced by several women's co-operatives in the southwestern parts of Morocco. The most labor-intensive part of oil-extraction is removal of the soft pulp (used to feed animals) and the cracking by hand, between two stones, of the hard nut. The seeds are then removed and gently roasted. This roasting accounts for part of the oil's distinctive, nutty flavor. [11] The traditional technique for oil extraction is to grind the roasted seeds to paste, with a little water, in a stone rotary quern. The paste is then squeezed by hand to extract the oil. The extracted paste is still oil-rich and is used as animal feed. Oil produced this way can be stored and used for 3–6 months, and can be produced as needed from kernels, which can keep for 20 years unopened. Dry-pressing is becoming increasingly important for oil produced for sale, as this method allows for faster extraction, and the oil produced can be used for 12–18 months after extraction.[ citation needed ]
The oil contains 80% unsaturated fatty acids, is rich in essential fatty acids, and is more resistant to oxidation than olive oil. Argan oil is used for dipping bread, on couscous and salads, and for other similar uses. A dip for bread known as amlou is made from argan oil, almonds, and peanuts, sometimes sweetened by honey or sugar. The unroasted oil is traditionally used as a treatment for skin diseases, and has become favoured by European cosmetics manufacturers. [12] [13]
Argan oil is sold in Morocco as a luxury item. Sales of the product have grown since being marketed by the cosmetics industry in the US and Europe in the early 21st century. Its price is notable compared to other oils. [14]
Argan oil contains: [15]
Argan trees are a major source of forage for sheep, goats, camels and cattle. Fruits and leaves are readily consumed by livestock. The press cake resulting from oil extraction can also be sun dried and fed to ruminants. Bees can nest in argan trees, making them sites for wild honey harvesting. [16]
The unique geographical properties of the region led to an application with the European Union to protect Argane (argan in French) by the Moroccan government. The application for Argane to become a Protected Geographical Indication was made in October 2011 with the European Commission. [3]
Argan, practices and know-how concerning the argan tree | |
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![]() Argan paste making | |
Country | Morocco |
Reference | 955 |
Inscription history | |
Inscription | 2014 (14nd session) |
List | Representative |
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On March 3, 2021, the United Nations General Assembly adopted a resolution to proclaim May 10th the International Day of Argania, an observance to be celebrated annually. [17] Amongst the motivations for this proclamation were the importance of Argania to sustainable development in areas where it is endemic. The UN resolution was submitted by Morocco, and was co-sponsored by 113 member states of the United Nations before being adopted by consensus. [18]
The almond is a species of tree native to Iran and surrounding countries, including the Levant. The almond is also the name of the edible and widely cultivated seed of this tree. Within the genus Prunus, it is classified with the peach in the subgenus Amygdalus, distinguished from the other subgenera by corrugations on the shell (endocarp) surrounding the seed.
Olive oil is a liquid fat obtained by pressing whole olives, the fruit of Olea europaea, a traditional tree crop of the Mediterranean Basin, and extracting the oil.
Azadirachta indica, commonly known as margosa, neem, nimtree or Indian lilac, is a tree in the mahogany family Meliaceae. It is one of two species in the genus Azadirachta. It is native to the northeast of the Indian subcontinent and to Indochina, but is naturalized and grown around the world in tropical and subtropical areas. Its fruits and seeds are the source of neem oil. Neem (नीम/نیم) is a Hindustani noun derived from Sanskrit nimba (निंब).
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.
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Salvia hispanica, commonly known as chia, is a species of flowering plant in the mint family, Lamiaceae, native to central and southern Mexico and Guatemala. It is considered a pseudocereal, cultivated for its edible, hydrophilic chia seed, grown and commonly used as food in several countries of western South America, western Mexico, and the southwestern United States.
Shilha, now more commonly known as Tashelhit, Tashelhiyt or Tashlhiyt, is a Berber language spoken in southwestern Morocco. When referring to the language, anthropologists and historians prefer the name Shilha, which is in the Oxford English Dictionary (OED). Linguists writing in English prefer Tashelhit. In French sources the language is called tachelhit, chelha or chleuh.
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.
In chemistry, acid value is a number used to quantify the acidity of a given chemical substance. It is the quantity of base, expressed as milligrams of KOH required to neutralize the acidic constituents in 1 gram of a sample.
Arbutus unedo is an evergreen shrub or small tree in the family Ericaceae, native to the Mediterranean Basin and Western Europe. The tree is well known for its fruits, the arbutus berry, which bear some resemblance to the strawberry, hence the common name strawberry tree. However, it is not closely related to true strawberries of the genus Fragaria.
Argan oil is a plant oil produced from the kernels of the argan tree, which is indigenous to Morocco and southwestern Algeria. In Morocco, argan oil is used to dip bread in at breakfast or to drizzle on couscous or pasta. It is also used for cosmetic purposes.
The Barbary ground squirrel is a species of rodent in the family Sciuridae. It is monotypic within the genus Atlantoxerus. It is endemic to the Atlas mountains in Morocco and some parts in Algeria, and has been introduced into the Canary Islands. Its natural habitats are subtropical or tropical dry shrubland, temperate grassland and rocky areas where it lives colonially in burrows. It was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae.
Ximenia americana, commonly known as tallow wood, hog plum, yellow plum, sea lemon, or pi'ut (Chamorro), is bush-forming shrub/small tree; a species from the Ximenia genus in the Olacaceae family. It is mainly found in the tropics, ranging from Africa, India and southeast Asia, to Australia, New Zealand, Pacific Islands, West Indies, Central, North and South America. It is especially common in Africa and South America. It is not domesticated so it is only found occurring in the wild.
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Hydnocarpus wightianus or chaulmoogra is a tree in the Achariaceae family. Hydnocarpus wightiana seed oil has been widely used in traditional Indian medicine, especially in Ayurveda, and in Chinese traditional medicine for the treatment of leprosy. It entered early Western medicine in the nineteenth century before the era of sulfonamides and other antibiotics for the treatment of several skin diseases and leprosy. The oil was prescribed for leprosy as a mixture suspended in gum or as an emulsion.
Shorea robusta seed oil is an edible oil extracted from the seeds of Shorea robusta. Shorea robusta is known as the Sal tree in India. Sal is indigenous to India and occurs in two main regions separated by the Gangetic Plain, namely the northern and central Indian regions. The plant belongs to the Dipterocarpaceae botanical family.
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