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Verbascoside
Verbascoside is a polyphenol glycoside in which the phenylpropanoid caffeic acid and the phenylethanoid hydroxytyrosol form an ester and an ether bond respectively, to the rhamnose part of a disaccharide, namely β-(3′,4′-dihydroxyphenyl)ethyl-O-α-L-rhamnopyranosyl(1→3)-β-D-(4-O-caffeoyl)-glucopyranoside. Occurrences Natural occurrences Verbascoside can be found in species in all the families of the order Lamiales (syn. Scrophulariales). Only two examples are known from outside the order, in the clade Asterids. ; in the Lamiales In the family Lamiaceae, it can be found in the medicinal plants in the genus ''Phlomis'', in the Scrophulariaceae, in ''Verbascum phlomoides'', ''Verbascum mallophorum'', or, in the family Buddlejaceae, in ''Buddleja globosa'' or ''Buddleja cordata'', in the family Bignoniaceae, in ''Pithecoctenium sp'' and ''Tynanthus panurensis'', in the family Orobanchaceae, in ''Cistanche sp'' and ''Orobanche rapum-genistae'', in the Plantaginaceae, in '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenylethanoid
Phenylethanoids are a type of phenolic compounds characterized by a phenethyl alcohol structure. Tyrosol and hydroxytyrosol are examples of such compounds. Glycosides The red deadnettle (''Lamium purpureum'') contains phenylethanoid glycosides named lamiuside A, lamiusides A, lamiuside B, B, lamiuside C, C, lamiuside D, D and lamiuside E, E. The aerial parts of ''Stachys officinalis'' contain phenylethanoid glycosides, (betonyoside A, betonyosides A, betonyoside B, B, betonyoside C, C, betonyoside D, D, betonyoside E, E and betonyoside F, F). Chemical investigation of methanol extracts from ''Pithecoctenium crucigerum'' (Bignoniaceae) showed the presence of five phenylethanoid glycosides (verbascoside, isoverbascoside, forsythoside B, jionoside D and leucosceptoside B), these all active against DPPH. Verbascoside and echinacoside are phenylethanoid and phenylpropanoid hybrids forming ester bonds with sugars. References {{aromatic-stub Phenylethanoids, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroxytyrosol
Hydroxytyrosol is an organic compound with the formula . It is a phenylethanoid, i.e. a relative of phenethyl alcohol. Its derivatives are found in a variety of natural sources, notably olive oils and wines. Hydroxytyrosol is a colorless solid, although samples often turn beige during storage. It is a derivative, formally speaking, of catechol. Hydroxytyrosol and its derivatives occur in olives and in wines. Occurrence Olives left, ester.html" ;"title="Oleuropein, bitter compound, an ester">Oleuropein, bitter compound, an ester of hydroxytyrosol found in green olive skin The olives, leaves, and olive pulp contain large amounts of hydroxytyrosol derivative oleuropein, more so than olive oil. Unprocessed, green (unripe) olives contain between 4.3 and 116 mg of hydroxytyrosol per 100 g of olives, while unprocessed, black (ripe) olives contain up to 413.3 mg per 100 g. The ripening of an olive substantially increases the amount of hydroxytyrosol. Processed olives, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhamnose
Rhamnose (Rha, Rham) is a naturally occurring deoxy sugar. It can be classified as either a methyl- pentose or a 6-deoxy- hexose. Rhamnose predominantly occurs in nature in its L-form as L-rhamnose (6-deoxy-L- mannose). This is unusual, since most of the naturally occurring sugars are in D-form. Exceptions are the methyl pentoses L- fucose and L-rhamnose and the pentose L- arabinose. However, examples of naturally-occurring D-rhamnose are found in some species of bacteria, such as '' Pseudomonas aeruginosa'' and '' Helicobacter pylori''. Rhamnose can be isolated from buckthorn (''Rhamnus''), poison sumac, and plants in the genus ''Uncaria''. Rhamnose is also produced by microalgae belonging to class Bacillariophyceae (diatoms). Rhamnose is commonly bound to other sugars in nature. It is a common glycone component of glycosides from many plants. Rhamnose is also a component of the outer cell membrane of acid-fast bacteria in the ''Mycobacterium'' genus, which includes the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphenol
Polyphenols () are a large family of naturally occurring phenols. They are abundant in plants and structurally diverse. Polyphenols include phenolic acids, flavonoids, tannic acid, and ellagitannin, some of which have been used historically as dyes and for tanning (leather), tanning garments. Etymology The name derives from the Ancient Greek word (, meaning "many, much") and the word ‘phenol’ which refers to a chemical structure formed by attachment of an aromatic benzenoid (phenyl) ring to a hydroxyl (-OH) group (hence the ''-ol'' suffix). The term "polyphenol" has been in use at least since 1894. Definition Polyphenols are natural products with "one or several hydroxyl groups on aromatic rings", including four principal classes: phenolic acids, flavonoids, stilbenes, and lignans. Flavonoids can be grouped as flavones, flavonols, flavanols, flavanones, isoflavones, proanthocyanidins, and anthocyanins. Particularly abundant flavanoids in foods are catechin (tea, frui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plantaginaceae
Plantaginaceae, the plantain family or veronica family, is a large, diverse family (biology), family of flowering plants in the order Lamiales that includes common flowers such as Antirrhinum, snapdragon and Digitalis, foxglove. It is unrelated to the true plantains, banana-like fruit also called "plantain". In older classifications, Plantaginaceae was the only family of the order Plantaginales, but numerous phylogenetic studies, summarized by the Angiosperm Phylogeny Group, have demonstrated that this taxon should be included within Lamiales. Overview The plantain family as traditionally circumscribed consisted of only three genera: ''Bougueria'', ''Littorella'', and ''Plantago''. However phylogenetic research has indicated that Plantaginaceae ''sensu stricto'' (in the strict sense) were nested within Scrophulariaceae (but forming a group that did not include the type genus of that family, ''Scrophularia''). Although Veronicaceae (1782) is the oldest family name for this group, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tynanthus Panurensis
''Tynanthus'' is a genus of woody plants that is part of the Bignoniaceae Bignoniaceae () is a Family (biology), family of flowering plants in the Order (biology), order Lamiales commonly known as the bignonias or trumpet vines.Vernon H. Heywood, Richard K. Brummitt, Ole Seberg, and Alastair Culham. ''Flowering Plant ... family. References External links Bignoniaceae Bignoniaceae genera {{Bignoniaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanchaceae
Orobanchaceae, the broomrapes, is a family (biology), family of mostly parasitic plants of the order (biology), order Lamiales, with about 90 genus, genera and more than 2000 species. Many of these genera (e.g., ''Pedicularis'', ''Rhinanthus'', ''Striga'') were formerly included in the family Scrophulariaceae ''sensu lato''. With its new circumscription, Orobanchaceae forms a distinct, monophyletic family. From a phylogenetic perspective, it is defined as the largest crown clade containing ''Orobanche major'' and relatives, but neither ''Paulownia tomentosa'' nor ''Phryma leptostachya'' nor ''Mazus japonicus''. The Orobanchaceae are annual plant, annual herbaceous plant, herbs or perennial plant, perennial herbs or shrubs, and most (all except ''Lindenbergia'', ''Rehmannia'' and ''Triaenophora'') are parasitic plant, parasitic on the roots of other plants—either holoparasitic or hemiparasitic (fully or partly parasitic). The holoparasitic species lack chlorophyll and therefore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cistanche
''Cistanche'' is a worldwide genus of Parasitic plant, holoparasitic desert plants in the family Orobanchaceae. They lack chlorophyll and obtain nutrients and water from the host plants whose roots they parasitize. They are often known as desert hyacinths. Taxonomy There are between 20 and 30 species of ''Cistanche''. The most comprehensive description of the genus was published in 1930. The taxonomy is difficult because important features of the flowers are often poorly preserved after drying. The plants are found from the Mediterranean region, North Africa, Middle East through to China. The species of ''Cistanche'' are parasitic plants that connect to the conductive system of a host, extracting water and nutrients from the roots of the host plant. Species Species as according to Plants of the World Online : Growth They typically grow in desert or sand dune areas Growing in arid regions, where their flower spikes that emerge from bare ground are the only evidence of the presen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orobanche Rapum-genistae
''Orobanche rapum-genistae'', the greater broomrape, is a plant species in the genus ''Orobanche''. It is a parasitic plant, native to Europe, growing on the roots of plants in the bean family, usually common broom or European gorse. Description The broomrapes are perennial, parasitic plants which contain no chlorophyll and are totally dependent on other plants to provide their nutrients. The greater broomrape can grow to a height of with a honey-brown downy stem, persisting as a dark brown dead spike after flowering. The leaves are represented by small pointed scales, concentrated near the base of the stem, and there is a single bract, which is longer than the flower, below each flower. These have a corolla with two lips, four stamens and a curved-down style. The upper lip is hooded and the lower lip has three lobes, the central one being the largest. The fruits are egg-shaped and enclosed in the dead flowerhead, and the seeds are minute. Distribution and habitat The greate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verbena Officinalis
''Verbena officinalis'', the common vervain or common verbena, is a perennial herb native to Europe. It grows up to high, with an upright habitus. The lobed leaves are toothed, and the delicate spikes hold clusters of two-lipped mauve flowers. This plant prefers limey soils; it is occasionally grown as an ornamental plant but perhaps more often for the powerful properties some herbalists ascribe to it. Propagation is by root cuttings or seed. It is widely naturalised outside its native range, for example in North America. Common names and taxonomy It is known also as simpler's joy or holy herb, or more ambiguously as mosquito plant or wild hyssop. The common name blue vervain is also sometimes used, but also refers to '' V. hastata''. Being the only member of its genus in much of its range, it is also simply known as vervain locally. The common names of ''V. officinalis'' in many Central and Eastern European languages often associate it with iron, for example: * ''Echtes Eis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plantago Lanceolata
''Plantago lanceolata'' is a species of flowering plant in the plantain family Plantaginaceae. It is known by the common names ribwort plantain, narrowleaf plantain, English plantain, ribleaf, lamb's tongue, and buckhorn. It is a common weed on cultivated or disturbed land. Description The plant is a rosette-forming perennial herb, with leafless, silky, hairy flower stems, growing to tall, exceptionally . The basal leaves are lanceolate spreading or erect, scarcely toothed with 3–5 strong parallel veins narrowed to a short petiole. The flower stalk is deeply furrowed, ending in an ovoid inflorescence of many small flowers each with a pointed bract. Each inflorescence can produce up to 200 seeds. Flowers are , with a green calyx and brownish corolla, four bent-back lobes with brown midribs and long white stamens. Reproduction The mode of reproduction can vary among populations.Jousimo, Jussi. 2014. Ecological and evolutionary effects of fragmentation on infectious disea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verbenaceae
The Verbenaceae ( ), the verbena family or vervain family, is a family of mainly tropical flowering plants. It contains trees, shrubs, and herbs notable for heads, spikes, or clusters of small flowers, many of which have an aromatic smell. The family Verbenaceae includes 32 genera and 800 species. Phylogenetic studies have shown that numerous genera traditionally classified in Verbenaceae belong instead in Lamiaceae. The mangrove genus ''Avicennia'', sometimes placed in the Verbenaceae or in its own family, Avicenniaceae, has been placed in the Acanthaceae. Economically important Verbenaceae include: * Lemon verbena (''Aloysia triphylla''), grown for aroma or flavoring * Verbenas or vervains (''Verbena''), some used in herbalism, others grown in gardens Taxonomy Tribes and genera in the family and their estimated species numbers: Casselieae (Schauer) Tronc. * ''Casselia'' Nees & Mart. - 6 species * ''Parodianthus'' Tronc. - 2 species * ''Tamonea'' Aubl. - 6 species C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
