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Tariric Acid
Tariric acid is an acetylenic fatty acid that can be found in the tallow-wood tree, ''Ximenia americana''. Léon-Albert Arnaud (1853–1915) was the first scientist to describe the chemical make-up of tariric acid, an extraction from the glucoside of the " tariri plant" found in Guatemala. Occurrence Tariric acid has been found in several oils and fats of plant origin. It was first isolated in 1892 from the seed oil of a species of '' Picramnia''. It appears in '' Picramnia camboita'' from Brazil, '' Picramnia carpinterae'' from Guatemala, and '' Picramnia lindeniana'' from Mexico. Tariric acid also occurs in the herb ''Marrubium vulgare'' (White horehound), where it is conjectured to have an anti-fungal role. It was found to stimulate lipid accumulation by adipocytes in vitro.Anna Ohtera, Yusaku Miyamae, Naomi Nakai, Atsushi Kawachi, Kiyokazu Kawada, Junkyu Han, Hiroko Isoda, Mohamed Neffati, Toru Akita, Kazuhiro Maejima, Seiji Masuda, Taiho Kambe, Naoki Mori, Kazuhiro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkyne
\ce \ce Acetylene \ce \ce \ce Propyne \ce \ce \ce \ce 1-Butyne In organic chemistry, an alkyne is an unsaturated hydrocarbon containing at least one carbon—carbon triple bond. The simplest acyclic alkynes with only one triple bond and no other functional groups form a homologous series with the general chemical formula . Alkynes are traditionally known as acetylenes, although the name ''acetylene'' also refers specifically to , known formally as ethyne using IUPAC nomenclature. Like other hydrocarbons, alkynes are generally hydrophobic. Structure and bonding In acetylene, the H–C≡C bond angles are 180°. By virtue of this bond angle, alkynes are rod-like. Correspondingly, cyclic alkynes are rare. Benzyne cannot be isolated. The C≡C bond distance of 121 picometers is much shorter than the C=C distance in alkenes (134 pm) or the C–C bond in alkanes (153 pm). : The triple bond is very strong with a bond strength of 839 kJ/mol. The sigma bond contribute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungus
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentation Chromatography
Argentation chromatography is chromatography using a stationary phase that contains silver salts. Silver-containing stationary phases are well suited for separating organic compounds on the basis of the number and type of alkene groups. The technique is employed for gas chromatography and various types of liquid chromatography, including thin layer chromatography Thin-layer chromatography (TLC) is a chromatography technique used to separate non-volatile mixtures. Thin-layer chromatography is performed on a sheet of an inert substrate such as glass, plastic, or aluminium foil, which is coated with a t .... Analytes containing alkene groups elute more slowly that the analogous compounds lacking alkenes. Separations are also sensitive to the type of alkene. The technique is especially useful in the analysis of fats and fatty acids, which are well known to exist in both saturated and unsaturated (alkene-containing) forms. Theory Silver ions form alkene complexes. The binding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Chromatography
Gas chromatography (GC) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture. In preparative chromatography, GC can be used to prepare pure compounds from a mixture. Gas chromatography is also sometimes known as vapor-phase chromatography (VPC), or gas–liquid partition chromatography (GLPC). These alternative names, as well as their respective abbreviations, are frequently used in scientific literature. Gas chromatography is the process of separating compounds in a mixture by injecting a gaseous or liquid sample into a mobile phase, typically called the carrier gas, and passing the gas through a stationary phase. The mobile phase is usually an inert gas or an unreactive gas such as helium, argon, nitrogen or hydrogen. The stationary phase is a microscopic la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picramniaceae
Picramniaceae is a small, mainly neotropical family of four genera '' Aenigmanu'', ''Alvaradoa'', '' Nothotalisia'' and '' Picramnia''. The family is the only member of the order Picramniales. Members of the family were formerly placed in the family Simaroubaceae or misidentified as species in the family Sapindaceae, in the order Sapindales. The most recent standard classification of the Angiosperms (the APG III system) distinguishes it as a separate family and order. It belongs to the malvids (eurosids II), one of the three groups that constitute the rosids. In 2021, a new genus was identified from materials collected almost 50 years prior. It was discovered by Robert Foster in 1973, but no scientist was able to identify it. It is named ''Aenigmanu'' for the enigma it originally presented to researchers. * Family Picramniaceae ** Genus '' Aenigmanu'' ** Genus ''Alvaradoa ''Alvaradoa'' is a genus of plants in the family Picramniaceae Picramniaceae is a small, mainly neo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alvaradoa
''Alvaradoa'' is a genus of plants in the family Picramniaceae. Retrieved on 1 September 2020 It contains the following species of shrubs or small trees: # '''' Liebm. # '''' Griseb. # '''' Urb. # '' |
Petroselinic Acid
Petroselinic acid is a fatty acid that occurs naturally in several animal and vegetable fats and oils. It is a white powder and is commercially available. In chemical terms, petroselinic acid is classified as a monounsaturated omega-12 fatty acid, abbreviated with a lipid number of 18:1 cis-6. It has the formula CH3(CH2)10CH=CH(CH2)4COOH. The term "petroselinic" means related to, or derived from, oil of ''Petroselinum'', parsley. Despite its name, petroselinic acid does not contain any selenium. Petroselinic acid is a positional isomer of oleic acid. Occurrence Petroselinic was first isolated from parsley seed oil in 1909. Petroselinic acid occurs in high amounts in plants in Apiaceae, Araliaceae, Griselinia (Griseliniaceae) and in Garryaceae. In Picramniaceae, petroselinic acid is accompanied by tariric acid. In addition, petroselinic acid has been found in minor amounts in several fats of plant and animal origin, including in human sources. The occurrence of petroselinic ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adipocyte
Adipocytes, also known as lipocytes and fat cells, are the cells that primarily compose adipose tissue, specialized in storing energy as fat. Adipocytes are derived from mesenchymal stem cells which give rise to adipocytes through adipogenesis. In cell culture, adipocyte progenitors can also form osteoblasts, myocytes and other cell types. There are two types of adipose tissue, white adipose tissue (WAT) and brown adipose tissue (BAT), which are also known as white and brown fat, respectively, and comprise two types of fat cells. Structure White fat cells White fat cells contain a single large lipid droplet surrounded by a layer of cytoplasm, and are known as unilocular. The nucleus is flattened and pushed to the periphery. A typical fat cell is 0.1 mm in diameter with some being twice that size, and others half that size. However, these numerical estimates of fat cell size depend largely on the measurement method and the location of the adipose tissue. The fat stored i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lipid
Lipids are a broad group of naturally-occurring molecules which includes fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E and K), monoglycerides, diglycerides, phospholipids, and others. The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes. Lipids have applications in the cosmetic and food industries, and in nanotechnology. Lipids may be broadly defined as hydrophobic or amphiphilic small molecules; the amphiphilic nature of some lipids allows them to form structures such as vesicles, multilamellar/unilamellar liposomes, or membranes in an aqueous environment. Biological lipids originate entirely or in part from two distinct types of biochemical subunits or "building-blocks": ketoacyl and isoprene groups. Using this approach, lipids may be divided into eight categories: fatty acyls, glycerolipids, glycerophospholipids, sphingolipids, saccharolipids, and polyketides (derived from condensati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marrubium Vulgare
''Marrubium vulgare'' (white horehound or common horehound) is a flowering plant in the mint family (Lamiaceae), native to Europe, northern Africa, and southwestern and central Asia. It is also widely naturalized in many places, including most of North America, North and South America. It is a grey-leaved herbaceous perennial plant, and grows to tall. The leaves are long with a densely crinkled surface, and are covered in downy hairs. The flowers are white, borne in clusters on the upper part of the main stem. Etymology The Oxford English Dictionary derives the word ''horehound'' from Old English ''hoar'' ("white," "light-colored," as in "hoarfrost") and ''hune'' (a word of unknown origin designating a class of herbs or plants). The second element was altered by folk etymology. Uses Folk medicine Horehound has been mentioned in conjunction with use as a traditional medicine, folk medicine dating at least back to the 1st century BC, where it appeared as a remedy for respirator ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ximenia Americana
''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 commonly found in woodlands native to the tropics in Africa, Asia, America and Australia, and grows to a height of 7m (23 feet). Its leaves are borne on spur shoots and have a spear-like to oval shape. The flowers and fruit of ''X. americana'' are aromatic and small. Flowering mainly occurs during the dry season, however, the maturing and ripening of the flowers and fruits occur throughout the year and are not affected by climatic conditions. ''Ximenia americana'' is found in a variety of diverse habitats ranging from dry woodlands and hilly areas to coastal bushlands and along riverbanks. They grow in areas with more than 500 mm of mean annual rainfall and up to heights of 2000 m. They are commonly found in poor and dry soil types. The plant has not been domesticated, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picramnia Lindeniana
''Picramnia'', the bitterbushes, is a genus of plant considered to be in the family Picramniaceae, but sometimes placed in Simaroubaceae. The name is conserved against the genera ''Pseudo-brasilium'' Adans., and ''Tariri'' Aubl., both which have been rejected (''nomen rejiciendum''). Selected species *'' Picramnia andrade-limae'' Pirani *'' Picramnia antidesma'' Sw. *'' Picramnia apetala'' Tul. *'' Picramnia bahiensis'' Turcz. *'' Picramnia bullata'' W.W.Thomas *'' Picramnia campestris'' Rizzini & Occhioni *'' Picramnia caracasana'' Engl. *'' Picramnia ciliata'' Mart. *'' Picramnia coccinea'' W.W.Thomas *'' Picramnia deflexa'' W.W.Thomas *'' Picramnia dictyoneura'' (Urb.) Urb. & Ekman *'' Picramnia dolichobotrya'' Diels *'' Picramnia elliptica'' Kuhlm. ex Pirani & W.W.Thomas *'' Picramnia emarginata'' Urb. & Ekman *'' Picramnia excelsa'' Kuhlm. ex Pirani *''Picramnia ferrea'' Pirani & W.W.Thomas *'' Picramnia gardneri'' Planch. *'' Picramnia glazioviana'' Engl. *'' Picra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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