Apricot

Apricot

T

he apricot is a small tree, 8–12 m (26–39 ft) tall, with a trunk up to 40 cm (16 in) in diameter and a dense, spreading canopy. The leaves are ovate, 5–9 cm (2.0–3.5 in) long and 4–8 cm (1.6–3.1 in) wide, with a rounded base, a pointed tip and a finely serrated margin. The flowers are 2–4.5 cm (0.8–1.8 in) in diameter, with five white to pinkish petals; they are produced singly or in pairs in early spring before the leaves. The fruit is a drupe similar to a small peach, 1.5–2.5 cm (0.6–1.0 in) diameter (larger in some modern cultivars), from yellow to orange, often tinged red on the side most exposed to the sun; its surface can be smooth (botanically described as: glabrous) or velvety with very short hairs (botanically: pubescent). The flesh is usually firm and not very juicy. Its taste can range from sweet to tart. The single seed is enclosed

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in a hard, stony shell, often called a "stone", with a grainy, smooth texture except for three ridges running down one side.

Cultivation and uses History of cultivation: The origin of the apricot is disputed. It was known in Armenia during ancient times, and has been cultivated there for so long that it is often thought to have originated there.[4][5] Its scientific name Prunus armeniaca (Armenian plum) derives from that assumption.

For example, the Belgian arborist baron de Poerderlé, writing in the 1770s, asserted, "Cet arbre tire son nom de l'Arménie, province d'Asie, d'où il est originaire et d'où il fut porté en Europe ..." ("this tree takes its name from Armenia, province of Asia, where it is native, and whence it was brought to Europe ...").[6] An archaeological excavation at Garni

in Armenia found apricot seeds in an Eneolithic-era site.[7] Despite the great number of varieties of apricots that are grown in Armenia today (about 50),[5] according to the Soviet botanist Nikolai Vavilov its center of origin would be the Chinese region, where the domestication of apricot would have taken place.

Other sources say that the apricot was first cultivated in India in about 3000 BC.[8] Its introduction to Greece is attributed to Alexander the Great;[8] later, the Roman General Lucullus (106–57 BC) also would have imported some trees – the cherry, white heart cherry, and apricot – from Armenia to Rome[citation needed]. Subsequent sources were often confused about the origin of the species. John Claudius Loudon (1838) believed it had a wide native range including Armenia, the

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Caucasus, the Himalayas, China, and Japan.[9] Apricots have been cultivated in Persia since antiquity, and dried ones were an important commodity on Persian trade routes. Apricots remain an important fruit in modern-day Iran, where they are known under the common name of zard-ālū.

Cultivation Although the apricot is native to a continental climate region with cold winters, it can grow in Mediterranean climates if enough cool winter weather allows a proper dormancy. [citation needed] A dry climate is good for fruit maturation.

The tree is slightly more cold-hardy than the peach, tolerating winter temperatures as cold as −30 °C (−22 °F) or lower if healthy. A limiting factor in apricot culture is spring frosts: They tend to flower very early (in early March in western Europe), meaning spring frost can kill the flowers. Furthermore, the trees are sensitive to temperature changes during the winter season.

In China, winters can be very cold, but temperatures tend to be more stable than in Europe and especially North America, where large temperature swings can occur in winter. Hybridisation with the closely related Prunus sibirica (Siberian apricot; hardy to −50 °C (−58 °F) but with less palatable fruit) offers options for breeding more cold-tolerant plants.

Kernels Seeds or kernels of the apricot grown in central Asia and around the Mediterranean are so sweet, they may be substituted for almonds. [citation needed] The Italian liqueur amaretto and amaretti biscotti are flavoured with extract of apricot kernels rather than almonds. [citation needed] Oil pressed from these cultivar kernels, and known as oil of almond, has been used as cooking oil.

On average, bitter apricot kernels contain about 5% amygdalin and sweet kernels about 0.9% amygdalin.

[13] These values correspond to 0.3% and 0.05% of cyanide. Since a typical apricot kernel weighs 600 mg, bitter and sweet varieties contain respectively 1.8 and 0.3 mg of cyanide.

Dried apricots Dried apricots are a type of traditional dried fruit. When treated with sulfur dioxide (E220), the color is vivid orange. Organic fruit not treated with sulfur vapor is darker in color and has a coarser texture. The world's largest producer of dried apricots is Turkey.

Medicinal and nonfood uses Cyanogenic glycosides (found in most stone fruit seeds, bark, and leaves) are found in high concentration in apricot seeds.

Laetrile, a purported alternative treatment for cancer, is extracted from apricot seeds. Apricot seeds were used against tumors as early as AD 502. In England during the

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17th century, apricot oil was also used against tumors, swellings, and ulcers.

Etymology The scientific name armeniaca was first used by Gaspard Bauhin in his Pinax Theatri Botanici (page 442), referring to the species as Mala armeniaca "Armenian apple". It is sometimes stated that this came

from Pliny the Elder, but it was not used by Pliny. Linnaeus took up Bauhin's epithet in the first edition of his Species Plantarum in 1753.[17] The name apricot is probably derived from a tree mentioned as praecocia by Pliny. Pliny says "We give the name of apples (mala) ... to peaches (persica) and pomegranates (granata) ..."[18] Later in the same section he states "The Asiatic peach ripens at the end of autumn, though

an early variety (praecocia) ripens in summer – these were discovered within the last thirty years ...".

In culture The Chinese associate the apricot with education and medicine.

For instance, the classical word (literally: "apricot altar") which means "educational circle", is still widely used in written language.

Chuang Tzu, a Chinese philosopher in 4th century BCE, told a story that Confucius taught his students in a forum surrounded by the wood of apricot trees.[24] The association with medicine in turn comes from the common use of apricot kernels as a component in traditional Chinese medicine, and from the story of Dong Feng, a physician during the Three Kingdoms period, who required no payment from his patients except that they plant apricot trees in his orchard on recovering from their illnesses, resulting in a large grove of apricot trees and a steady supply of medicinal ingredients.

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