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Vanilla | |
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Flat-leaved vanilla ( Vanilla planifolia ) | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Order: | Asparagales |
Family: | Orchidaceae |
Subfamily: | Vanilloideae |
Tribe: | Vanilleae |
Genus: | Vanilla Plumier ex Mill., 1754 |
Species | |
Green: Distribution of Vanilla species | |
Synonyms [1] | |
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Vanilla, the vanilla orchids, forms a flowering plant genus of about 110 species in the orchid family (Orchidaceae). This evergreen genus occurs worldwide in tropical and subtropical regions, from tropical America to tropical Asia, New Guinea and West Africa. [1] Five species are known from the contiguous United States, all limited to southern Florida. [2]
The most widely known member is the flat-leaved vanilla ( V. planifolia ), native to Mexico and Belize, [3] from which commercial vanilla flavoring is derived. It is the only orchid widely used for industrial purposes in flavoring such products as foods, beverages and cosmetics, and is recognized as the most popular aroma and flavor. [4] The key constituent imparting its flavour is the phenolic aldehyde vanillin. [5]
The genus was established in 1754 by Plumier, after J. Miller. The word vanilla, derived from the diminutive of the Spanish word vaina (vaina itself meaning sheath or pod), simply translates as little pod.
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This genus of vine-like plants has a monopodial climbing habitus. They can form long thin stems with a length of more than 35 m, with alternate leaves spread along their length. The short, oblong, dark green leaves of Vanilla are thick and leathery, even fleshy in some species. But there are also a significant number of species that have their leaves reduced to scales or have become nearly or totally leafless and appear to use their green climbing stems for photosynthesis. Long and strong aerial roots grow from each node.
The racemose inflorescence's short-lived flowers arise successively on short peduncles from the leaf axils or scales. There may be up to 100 flowers on a single raceme, but usually no less than 20. The flowers are quite large and attractive with white, green, greenish yellow or cream colors. The flowers' sepals and petals are similar. The lip is tubular-shaped and surrounds the long, bristly column, opening up, as the bell of a trumpet, at its apex. The anther is at the top of the column and hangs over the stigma, separated by the rostellum. Most Vanilla flowers have a sweet scent.
Blooming occurs only when the flowers are fully grown. Each flower opens up in the morning and closes late in the afternoon on the same day, never to reopen. If pollination has not occurred meanwhile, it will be shed. The flowers are self-fertile, but need pollinators to perform this task. In the Neotropics, the flowers were historically presumed to be pollinated by stingless bees (e.g. Melipona ) or hummingbirds, but this was never confirmed; the only actual documented pollination (i.e., producing seed set) is recorded for an orchid bee, Eulaema meriana , visiting Vanilla grandiflora in Peru, [6] and pollinia of Vanilla species have been observed attached to other species of Eulaema in Panama, [7] and pollinia of Vanilla pompona are carried by males of Eulaema cingulata in Peru. [8] Hand pollination is the most reliable method in commercially grown vanilla. [9] Vanilla plantations require trees for the orchids to climb and anchor by its roots. [9]
The fruit is termed "vanilla bean", though true beans are fabaceous eudicots not at all closely related to orchids. Rather, the vanilla fruit is technically an elongate, fleshy and later dehiscent capsule 10–20 cm long. It ripens gradually for 8 to 9 months after flowering, eventually turning black in color and giving off a strong aroma. Each pod contains thousands of minute seeds, and both the pods and seeds within are used to create vanilla flavoring. Vanilla beans are harvested by hand from commercial orchards. [9]
Vanilla species are used as food plants by the larvae of some Lepidoptera species, such as the woolly bear moths Hypercompe eridanus and H. icasia . Off-season or when abandoned, they may serve as habitat for animals of open forest, e.g. on the Comoros for Robert Mertens's day gecko (Phelsuma robertmertensi).
The taxonomy of the genus Vanilla is complex. [10]
This is a partial list of species or synonyms:
Regarded as the world's most popular aroma and flavor, [12] vanilla contains the phenolic aldehyde, vanillin, as well as anisaldehyde, together accounting for its predominant sensory characteristics. [5] Vanilla is a widely used aroma and flavor compound for foods, beverages and cosmetics, [4] [12] as indicated by its popularity as an ice cream flavor. [13]
Orchids are plants that belong to the family Orchidaceae, a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Orchids are cosmopolitan plants that are found in almost every habitat on Earth except glaciers. The world's richest diversity of orchid genera and species is found in the tropics.
Vanilla is a spice derived from orchids of the genus Vanilla, primarily obtained from pods of the flat-leaved vanilla (V. planifolia).
Bulbophyllum is a genus of mostly epiphytic and lithophytic orchids in the family Orchidaceae. It is the largest genus in the orchid family and one of the largest genera of flowering plants with more than 2,000 species, exceeded in number only by Astragalus. These orchids are found in diverse habitats throughout most of the warmer parts of the world including Africa, southern Asia, Latin America, the West Indies, and various islands in the Indian and Pacific Oceans. Orchids in this genus have thread-like or fibrous roots that creep over the surface of trees or rocks or hang from branches. The stem is divided into a rhizome and a pseudobulb, a feature that distinguished this genus from Dendrobium. There is usually only a single leaf at the top of the pseudobulb and from one to many flowers are arranged along an unbranched flowering stem that arises from the base of the pseudobulb. Several attempts have been made to separate Bulbophyllum into smaller genera, but most have not been accepted by the World Checklist of Selected Plant Families.
Vanillin is an organic compound with the molecular formula C8H8O3. It is a phenolic aldehyde. Its functional groups include aldehyde, hydroxyl, and ether. It is the primary component of the extract of the vanilla bean. Synthetic vanillin is now used more often than natural vanilla extract as a flavoring in foods, beverages, and pharmaceuticals.
Vanilla is a flavoring.
Vanilla extract is a solution made by macerating and percolating vanilla pods in a solution of ethanol and water. It is considered an essential ingredient in many Western desserts, especially baked goods like cakes, cookies, brownies, and cupcakes, as well as custards, ice creams, and puddings. Although its primary flavor compound is vanillin, pure vanilla extract contains several hundred additional flavor compounds, which are responsible for its complex, deep flavor. By contrast, artificial vanilla flavor is typically made up of only artificially derived vanillin, which is frequently made from a by-product of the wood pulp industry.
Acineta, abbreviated as Acn in horticultural trade, is a small genus belonging to the orchid family (Orchidaceae). The name is derived from the Greek word 'akinetos' (immobile), referring to the rigid labellum (lip).
Dendrophylax lindenii, the ghost orchid is a rare perennial epiphyte from the orchid family (Orchidaceae). It is native to Florida, the Bahamas, and Cuba. Other common names include palm polly and white frog orchid.
Encyclia is a genus of orchids. The genus name comes from Greek enkykleomai, referring to the lateral lobes of the lip which encircle the column. It is abbreviated as E. in the horticultural trade.
Domesticated plants of Mesoamerica, established by agricultural developments and practices over several thousand years of pre-Columbian history, include maize and capsicum. A list of Mesoamerican cultivars and staples:
Tipularia discolor, the crippled cranefly or crane-fly orchid, is a perennial terrestrial woodland orchid, a member of the family Orchidaceae. It is the only species of the genus Tipularia found in North America. It occurs in the southeastern United States from Texas to Florida, the range extending north into the Ohio Valley and along the Appalachians as far north as the Catskills. There are also isolated populations in Massachusetts and in the Great Lakes region. Tipularia discolor is a common early pioneer during secondary succession, readily colonizing woodland habitats during early developmental or regrowth stages.
Vanilla planifolia is a species of vanilla orchid native to Mexico, Central America, Colombia, and Brazil. It is one of the primary sources for vanilla flavouring, due to its high vanillin content. Common names include flat-leaved vanilla, and West Indian vanilla. Often, it is simply referred to as vanilla. It was first scientifically named in 1808. With the species' population in decline and its habitats being converted to other purposes, the IUCN has assessed Vanilla planifolia as Endangered.
Vanilla pompona is a species of vanilla orchid. It is native to Mexico and northern South America, and is one of the sources for vanilla flavouring, due to its high vanillin content.
Vanilla polylepis is a climbing orchid species in the plant family Orchidaceae. It is native to tropical Africa, with a range spanning the width of the continent, from Kenya to Angola. It grows in high-altitude evergreen and swamp forests between 1,200–1,500 m (3,900–4,900 ft) and is often found growing on trees bordering rivers and waterfalls. Plants produce bright green, fleshy stems, 10–12 mm (0.39–0.47 in) in diameter, with large, glossy leaves. White, aerial roots form on the stems allowing the orchids to attach themselves to trees for support. As with many orchids, they produce showy flowers, which in the case of V. polylepis are white and yellow with a pink to maroon blotch. This differentiates them from similar species. They have seedpod-like fruits, called capsules, which produce a distinctive aroma as they dry. They are closely related to the well-known species Vanilla planifolia, whose seed pods are used commercially in the production of vanilla flavouring.
Caleana, commonly known as duck orchids, is a genus of flowering plants in the orchid family, Orchidaceae that is found in Australia and New Zealand. The Australian species are found in all states but have not been recorded in the Northern Territory. Duck orchids have a single leaf and one or a few, dull-coloured, inconspicuous flowers. Most species are found in Western Australia but one species occurs in eastern Australia and one occurs in eastern Australia and New Zealand. Orchids in this genus as well as the hammer orchids (Drakaea) are pollinated by male thynnid wasps.
Vanilla production contributes to the local economy of French Polynesia. Although it was a major export crop after its introduction by the French in 1848, vanilla is no longer a significant export product.
Vanilla × tahitensis is a hybrid orchid in the genus Vanilla. It was first described by the botanist John William Moore in 1933 from Raiatea in the Society Islands, where it was found growing on trees, having escaped from cultivation.
Glucovanillin, also known as vanilloside, is a chemical compound found in vanilla beans. Chemically, it is a glucoside composed of glucose and vanillin. Glucovanillin is particularly prevalent in green vanilla beans and upon ripening it is hydrolyzed by the action of the enzyme β-glucosidase which releases vanillin, the major contributor to the aroma and flavor of vanilla. Vanillin is further released from glucovanillin during the curing process of vanilla production.
The pollination of orchids represents a complex aspect of the biology of this plant family, characterized by intricate flower structures and diverse ecological interactions with pollinator. Notably, the topic has garnered significant scientific interest over time, including the attention of Charles Darwin, who is recognized for his contributions to the theory of evolution by natural selection. In 1862, Darwin published his observations on the essential role of insects in orchid pollination in his work The Fertilization of Orchids. He noted that the various strategies employed by orchids to attract their pollinators are complex.
Vanilla odorata, also known as vanilla tlatepusco, is a species of flowering plant in the family Orchidaceae, native to southern Mexico, Central America, and tropical South America. With Vanilla planifolia it is a parent of the vanilla crop species Vanilla × tahitensis.