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β-Eleostearic Acid
β-Eleostearic acid, or (9''E'',11''E'',13''E'')-octadeca-9,11,13-trienoic acid, is an organic compound with formula or H3C(CH2)3(CH=CH)3(CH2)7COOH. It is an all-''trans'' isomer of octadecatrienoic acid. See also * α-Eleostearic acid, the (9''Z'',11''E'',13''E'')-isomer, found in tung oil and bitter gourd ''Momordica charantia'' (commonly called bitter melon, cerassee, goya, bitter apple, bitter gourd, bitter squash, balsam-pear, karela, karavila and many more names listed below) is a tropical and subtropical vine of the family Cucurbitaceae, w ... seed oil. Fatty acids Alkenoic acids Polyenes {{OrganicAcid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Compound
Some chemical authorities define an organic compound as a chemical compound that contains a carbon–hydrogen or carbon–carbon bond; others consider an organic compound to be any chemical compound that contains carbon. For example, carbon-containing compounds such as alkanes (e.g. methane ) and its derivatives are universally considered organic, but many others are sometimes considered inorganic, such as certain compounds of carbon with nitrogen and oxygen (e.g. cyanide ion , hydrogen cyanide , chloroformic acid , carbon dioxide , and carbonate ion ). Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The study of the properties, reactions, and syntheses of organic compounds comprise the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonate salts and cyanide salts), along with a few other exceptions (e.g., carbon dioxide, and even ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isomer
In chemistry, isomers are molecules or polyatomic ions with identical molecular formula – that is, the same number of atoms of each element (chemistry), element – but distinct arrangements of atoms in space. ''Isomerism'' refers to the existence or possibility of isomers. Isomers do not necessarily share similar chemical property, chemical or physical property, physical properties. Two main forms of isomerism are structural isomerism, structural (or constitutional) isomerism, in which ''chemical bond, bonds'' between the atoms differ; and stereoisomerism (or spatial isomerism), in which the bonds are the same but the ''relative positions'' of the atoms differ. Isomeric relationships form a hierarchy. Two chemicals might be the same constitutional isomer, but upon deeper analysis be stereoisomers of each other. Two molecules that are the same stereoisomer as each other might be in different conformational forms or be different Isotopologue, isotopologues. The depth of analy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octadecatrienoic Acid
An octadecatrienoic acid is a chemical compound with formula , a polyunsaturated fatty acid whose molecule has an 18-carbon unbranched backbone with three double bonds. The name refers to many different structural and configurational isomers, that differ in the position of the double bonds along the backbone and on whether they are in ''cis'' (''Z'') or ''trans'' (''E'') configuration. Some isomers have considerable biological, pharmaceutical, or industrial importance, such as: * α-Linolenic acid (9''Z'',12''Z'',15''Z''), found in many cooking oils * γ-Linolenic acid (6''Z'',9''Z'',12''Z''), found in the evening primrose (''Oenothera biennis'') * Pinolenic acid (5''Z'',9''Z'',12''Z''), found in the seeds of pines (''Pinus'' species) * Columbinic acid (5''E'',9''Z'',12''Z''), found in ''Thalictrum'' seed oils * α-Eleostearic acid (9''Z'',11''E'',13''E''), the main component of tung oil, produced from the nuts of tung tree (''Vernicia fordii'') * β-Eleostearic acid (9''E'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
α-Eleostearic Acid
α-Eleostearic acid or (9''Z'',11''E'',13''E'')-octadeca-9,11,13-trienoic acid, is an organic compound, a conjugated fatty acid and one of the isomers of octadecatrienoic acid. It is often called simply eleostearic acid although there is also a β-eleostearic acid (the ''all-trans'' or (9''E'',11''E'',13''E'') isomer). Its high degree of unsaturation gives tung oil its properties as a drying oil. Biochemical properties In their pioneering work on essential fatty acids, George Burr, Mildred Burr and Elmer Miller compared the nutritional properties of α-eleostearic acid (ELA) to that of its isomer alpha-linolenic acid (ALA). ALA relieved essential fatty acid deficiency; ELA did not. In rats, α-eleostearic acid is converted to a conjugated linoleic acid. The compound has been found to induce programmed cell death of fat cells, and of HL60 leukemia cells in vitro at a concentration of 20 μM. Diets containing 0.01% bitter gourd seed oil (0.006% as α-eleostearic acid) we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tung Oil
Tung oil or China wood oil is a drying oil obtained by pressing the seed from the nut of the tung tree (''Vernicia fordii''). Tung oil hardens upon exposure to air (through polymerization), and the resulting coating is transparent and has a deep, almost wet look. Used mostly for finishing and protecting wood, after numerous coats, the finish can even look plastic-like. Related drying oils include linseed, safflower, poppy, and soybean oils. Raw tung oil tends to dry to a fine, wrinkled finish. This property was used to make wrinkle finishes, usually by adding excess cobalt drier. To prevent wrinkling, the oil is heated to gas-proof it (also known as "boiled"). "Tung oil finish" is often used by paint and varnish manufacturers as a generic name for any wood-finishing product that contains the real tung oil or provides a finish that resembles the finish obtained with tung oil. History The word "tung" is etymologically derived from the Chinese 桐 ''tóng''. The tung oil tree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitter Gourd
''Momordica charantia'' (commonly called bitter melon, cerassee, goya, bitter apple, bitter gourd, bitter squash, balsam-pear, karela, karavila and many more names listed below) is a tropical and subtropical vine of the family Cucurbitaceae, widely grown in Asia, Africa, and the Caribbean for its edible fruit. Its many varieties differ substantially in the shape and bitterness of the fruit. Bitter melon originated in Africa, where it was a dry-season staple food of ǃKung hunter-gatherers. Wild or semi-domesticated variants spread across Asia in prehistory, and it was likely fully domesticated in Southeast Asia. It is widely used in the cuisines of East Asia, South Asia, and Southeast Asia. Description This herbaceous, tendril-bearing vine grows up to in length. It bears simple, alternate leaves across, with three to seven deeply separated lobes. Each plant bears separate yellow male and female flowers. In the Northern Hemisphere, flowering occurs from June to July, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fatty Acids
In chemistry, in particular in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, from 4 to 28. Fatty acids are a major component of the lipids (up to 70% by weight) in some species such as microalgae but in some other organisms are not found in their standalone form, but instead exist as three main classes of esters: triglycerides, phospholipids, and cholesteryl esters. In any of these forms, fatty acids are both important dietary sources of fuel for animals and important structural components for cells. History The concept of fatty acid (''acide gras'') was introduced in 1813 by Michel Eugène Chevreul, though he initially used some variant terms: ''graisse acide'' and ''acide huileux'' ("acid fat" and "oily acid"). Types of fatty acids Fatty acids are classified in many ways: by length, by saturation vs unsat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
