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Flavan-3,4-diol
Leucoanthocyanidin (flavan-3,4-diols) are colorless chemical compounds related to anthocyanidins and anthocyanins. Leucoanthocyanins can be found in ''Anadenanthera peregrina'' and in several species of ''Nepenthes'' including '' N. burbidgeae'', '' N. muluensis'', '' N. rajah'', '' N. tentaculata'', and '' N. × alisaputrana''. Such compounds include: * Leucocyanidin * Leucodelphinidin * Leucofisetinidin * Leucomalvidin * Leucopelargonidin * Leucopeonidin * Leucorobinetinidin * Melacacidin * Teracacidin from '' Acacia obtusifolia'' and '' Acacia maidenii'' heartwoods Leucoanthocyanidins have been demonstrated to be intermediates in anthocyanidin biosynthesis in flowers of '' Matthiola incana''. Bate-smith recommended in 1954 the use of the Forestal solvent for the isolation of leuco-anthocyanins. Metabolism Leucoanthocyanidin dioxygenase uses flavan-3,4-diols to produce 3-hydroxyanthocyanidins. The gene encoding the enzyme (PpLDOX) has be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leucoanthocyanidin Dioxygenase
In enzymology, a leucocyanidin oxygenase () is an enzyme that catalysis, catalyzes the chemical reaction :leucocyanidin + 2-oxoglutarate + O2 \rightleftharpoons cis- and trans-dihydroquercetins + succinate + CO2 + 2 H2O The 3 substrate (biochemistry), substrates of this enzyme are leucocyanidin, 2-oxoglutarate, and oxygen, O2, whereas its 5 product (chemistry), products are cis-dihydroquercetin, trans-dihydroquercetin, succinate, carbon dioxide, CO2, and water, H2O. This enzyme belongs to the family of oxidoreductases, specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derived from O2 with 2-oxoglutarate as one donor, and incorporation of one atom o oxygen into each donor. The List of enzymes, systematic name of this enzyme class is leucocyanidin,2-oxoglutarate:oxygen oxidoreductase. This enzyme is also called leucoanthocyanidin dioxygenase (LDOX) or anthocyanidin synthase (ANS). This enzym ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Maidenii
''Acacia maidenii'', also known as Maiden's wattle, is a tree native to Australia (New South Wales, Queensland and Victoria). It has been introduced into India (Tamil Nadu) and Argentina, and it grows on plantations in South Africa. Description and habitat It prefers full sun to partial shade and it is often found on the edge of rainforest. It grows up to 20 m high in an erect or spreading habit. The phyllodes are dark green, alternate along the stem and reach 20 cm in length and 1 to 3 cm in width. It is very fast growing, reaching 1.5 m tall in as little as five months. Its flowers have pale yellow spikes up to 6 cm long that often occur in clusters of two to three. The fruit is hairy, about 15 cm long and narrow, often becoming coiled. In the Australian state of Victoria it is listed as being an endangered species; however, it is a common species through much of the rest of its range. The tree has a lifespan of more than 30 years. It grows approxi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leucodelphinidin
Leucodelphinidin is a colorless chemical compound related to leucoanthocyanidins. It can be found in '' Acacia auriculiformis'', in the bark of Karada ('' Cleistanthus collinus'') and in the kino (gum) from ''Eucalyptus pilularis''. Other species containing leucodelphinidin include ''Aesculus hippocastanum'' (Horse chestnut, in rind/bark/cortex), ''Arachis hypogaea'' (Earth nut in seeds), ''Arbutus unedo'' (Arbutus, in the leaf), '' Caesalpinia pulcherrima'' (Barbados pride), ''Ceratonia siliqua'' (Carob, in the fruit), ''Hamamelis virginiana'' (American witch hazel, in the leaf), ''Hippophae rhamnoides'' (Hippophae berry, in the leaf), ''Humulus lupulus'' (bine flower / blossom, in the leaf), '' Musa acuminata × balbisiana'' (Banana, in the fruit), ''Nelumbo nucifera'' (lotus, in the leaf), ''Phyllanthus emblica'' (Emblic, Indian gooseberry, in the rind/bark/cortex), ''Quercus alba'' (White oak, in the rind/bark/cortex), ''Quercus robur'' (Common oak, in the rind/bark/cortex), '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leucofisetinidin
Leucofisetinidin is a flavan-3,4-diol (leucoanthocyanidin), a type of natural phenolic substance. It is the monomer of condensed tannins called profisetinidins. Those tannins can be extracted from the heartwood of ''Acacia mearnsii ''Acacia mearnsii'', commonly known as black wattle, late black wattle or green wattle, is a species of flowering plant in the family Fabaceae and is Endemism, endemic to south-eastern Australia. It is usually an erect tree with smooth bark, Glo ...'' or from the heartwoods of '' Schinopsis balansae'', '' Schinopsis quebrachocolorado'' and from commercial quebracho extract. See also * Fisetinidin References Leucoanthocyanidins {{aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Obtusifolia
''Acacia obtusifolia'', commonly known as stiff-leaf wattle or blunt-leaf wattle, is a perennial tree in subfamily Mimosoideae of family Fabaceae. Description ''Acacia obtusifolia'' is an upright or spreading perennial tree, which grows from 1.5m to 8m in height and is native to Australia. It is closely related to '' Acacia longifolia''. ''A. obtusifolia'' can be distinguished by having phyllode margins which are resinous, usually blooming later in the year and with paler flowers than ''A. longifolia.'' It flowers usually from December through February. Some populations of ''A. obtusifolia'' can survive winters to −6 °C and possibly a light snow; however, plants from populations in areas that are frost-free such as the coastal ranges of Northern NSW are susceptible to cold and will be killed by frosts lower than −3 °C. These populations avoid the valley floors and occur mainly on sandstone ridges well above the frost line. Phytochemicals Teracacidin, a flavan-3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melacacidin
Melacacidin is a chemical compound related to leucoanthocyanidins. It can be found in '' Acacia crassicarpa''. Melacacidin is a compound that can provoke contact allergy to Australian blackwood ''Acacia melanoxylon ''Acacia melanoxylon'', commonly known as the Australian blackwood, is an ''Acacia'' species native to south-eastern Australia. The species is also known as blackwood, hickory, mudgerabah, Tasmanian blackwood, or blackwood acacia. The tree belon ...''. References Leucoanthocyanidins Catechols Enediols {{Aromatic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitis Vinifera
''Vitis vinifera'', the common grape vine, is a species of flowering plant, native to the Mediterranean Basin, Mediterranean region, Central Europe, and southwestern Asia, from Morocco and Portugal north to southern Germany and east to northern Iran. , there were between List of grape varieties, 5,000 and 10,000 varieties of ''Vitis vinifera'' grapes though only a few are of commercial significance for wine and table grape production. The wild grape is often classified as ''Vitis vinifera'' ''sylvestris'' (in some classifications considered ''Vitis sylvestris''), with ''Vitis vinifera'' ''vinifera'' restricted to cultivated forms. Domesticated vines have hermaphrodite#Plants, hermaphrodite flowers, but ''sylvestris'' is plant sexuality, dioecious (male and female flowers on separate plants) and pollination is required for fruit to develop. Grapes can be eaten fresh or dried to produce raisins, Sultana (grape)#Raisins, sultanas, and Zante currant, currants. Grape leaves are used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peach
The peach (''Prunus persica'') is a deciduous tree first domesticated and Agriculture, cultivated in China. It bears edible juicy fruits with various characteristics, most called peaches and the glossy-skinned, non-fuzzy varieties called nectarines. Peaches and #Nectarines, nectarines are the same species, though they are regarded commercially as different fruits. The tree is regarded as handsome and is planted in gardens for its springtime blooms in addition to fruit production. The peach tree is relatively short lived, usually not exceeding twenty years of age. However, the peach fruit is regarded as a symbol of longevity in several East Asian cultures. The specific name ''persica'' refers to its widespread cultivation in Persia (modern-day Iran), from where it was transplanted to Europe and in the 16th century to the Americas. It belongs to the genus ''Prunus'', which also includes the cherry, apricot, almond, and plum, and which is part of the Rosaceae, rose family. The p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3-hydroxyanthocyanidins
Anthocyanidins are common plant pigments, the aglycones of anthocyanins. They are based on the flavylium cation, an oxonium ion, with various groups substituted for its hydrogen atoms. They generally change color from red through purple, blue, and bluish green as a function of pH. Anthocyanidins are an important subclass of the polymethine dyes and flavonoids. The flavylium cation is a chromenylium cation with a phenyl group substituted in position 2; and chromenylium (also called benzopyrylium) is a bicyclic version of pyrylium. The positive charge can move around the molecule. At least 31 monomeric anthocyanidins have been properly identified in living organisms, mostly as the core components of anthocyanins. The latter are responsible for the red, purple, blue, or black color of many fruits (like grapes and blueberries), flowers (like roses), leaves (like purple cabbage), and even tubers (like radishes and purple yams). They are also found in some animals. Cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forestal
Forestal is a solvent used in chromatography, composed of acetic acid, water, and hydrochloric acid in a 30:10:3 ratio by volume. It is useful for isolating anthocyanin Anthocyanins (), also called anthocyans, are solubility, water-soluble vacuole, vacuolar pigments that, depending on their pH, may appear red, purple, blue, or black. In 1835, the German pharmacist Ludwig Clamor Marquart named a chemical compou ...s in room-temperature chromatography using standard filter paper. References * * Pecket, R.C. Constituents of Leaf Extracts ... , New Phytologist 1959 Oct; 58(2) (retrieved 27 sept 2010 http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.1959.tb05350.x/pdf ) * Stecher, G. and Bonn, G. K., Phytochemical Analysis, Chromatography, Elsevier Science, E. Heftmann (ed), Amsterdam, pp. 1050. {{ISBN, 0-444-51108-3 (2004) (retrieved via google books 9/27/2010) Solvents Chromatography Anthocyanins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
