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Ketoisanic Acid
Ketoisanic acid is a linear fatty acid composed of 18 carbon atoms, with two triple bonds in the positions 9≡10 and 11≡12, a double bond in the position 17=18, and a ketone substituent in the position 8. This is one of the rare polyacetylenic acids with conjugated triple bonds, the oxygenated isanic acid. Natural occurrence The acid can be detected, at concentrations of 1–3%, together with isanic and isanolic acid, in the seed oil of the tree ''Ongokea gore'' or ''Ongokea klaineana''; both are plants from equatorial Africa, called "isano" in the local language.{{cite journal , last1=Badami , first1=R. C. , last2=Patil , first2=K. B. , title=Structure and occurrence of unusual fatty acids in minor seed oils , journal=Progress in Lipid Research ''Progress in Lipid Research'' is a quarterly peer-reviewed scientific journal that covers research on all aspects of research on lipids. The journal was established in 1973 with Ralph Holman (University of Minnesota) as founding edito ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triple Bond
A triple bond in chemistry is a chemical bond between two atoms involving six Electron pair bond, bonding electrons instead of the usual two in a covalent bond, covalent single bond. Triple bonds are stronger than the equivalent covalent bond, single bonds or double bond, double bonds, with a bond order of three. The most common triple bond is in a nitrogen N2 molecule; the second most common is that between two carbon atoms, which can be found in alkynes. Other functional groups containing a triple bond are cyanides and isocyanides. Some diatomic molecules, such as diphosphorus and carbon monoxide, are also triple bonded. In skeletal formula, skeletal formulae the triple bond is drawn as three parallel lines (≡) between the two connected atoms. Bonding Triple bonding can be explained in terms of orbital hybridization. In the case of acetylene, each carbon atom has two sp orbital, sp-orbitals and two p-orbitals. The two sp-orbitals are linear, with 180° bond angles, and occupy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Bond
In chemistry, a double bond is a covalent bond between two atoms involving four bonding electrons as opposed to two in a single bond. Double bonds occur most commonly between two carbon atoms, for example in alkenes. Many double bonds exist between two different elements: for example, in a carbonyl group between a carbon atom and an oxygen atom. Other common double bonds are found in azo compounds (N=N), imines (C=N), and sulfoxides (S=O). In a skeletal formula, a double bond is drawn as two parallel lines (=) between the two connected atoms; typographically, the equals sign is used for this. Double bonds were introduced in chemical notation by Russian chemist Alexander Butlerov. Double bonds involving carbon are stronger and shorter than single bonds. The bond order is two. Double bonds are also electron-rich, which makes them potentially more reactive in the presence of a strong electron acceptor (as in addition reactions of the halogens). File:Ethene structural.svg, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isanic Acid
Isanic acid or erythrogenic acid is a linear fatty acid composed of 18 carbon atoms, with two triple bonds in the positions 9≡10 and 11≡12 and a double bond in the position 17=18. This is one of the rare polyacetylenic acids with conjugated triple bonds. Its delta notation is 18:3Δ9a,11a,17. Its structural formula is CH2=CH-(CH2)4–C≡C–C≡C–(CH2)7–COOH. Exocarpic acid is isomeric to isanic acid. The related isanolic acid, unlike isanic acid, contains an additional hydroxyl group. The oxygenated isanic acid is called ketoisanic acid. Discovery Isanic acid was initially isolated in 1937 by researchers A. Steger and J. van Loon in the oil of the seeds of ''Ongokea gore'' or ''Ongokea klaineana'', a plant from equatorial Africa, called in the native language "boleka" or "isane", hence the common name of isanic acid. The oil seeds contain about 60% lipids. Various analyses have revealed the concentration of isanic acid in isane oil from 32% to 51%. Synthesis The synthe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isanolic Acid
Isanolic acid is a linear fatty acid composed of 18 carbon atoms, with two triple bonds in the positions 9≡10 and 11≡12, a double bond in the position 17=18, and a hydroxyl-OH in the position 8. The acid is one of the rare polyacetylenic acids with conjugated triple bonds. The compound belongs to the family of diynes and enynes, as well as to the alkyne and alkenoic acids. The related compounds are isanic and ketoisanic acids, both containing only one hydroxyl group. Discovery The acid was initially isolated in 1937 by researchers A. Steger and J. van Loon from the seed oilof the tree '' Ongokea gore'' or ''Ongokea klaineana'', a plant from equatorial Africa, called in the native language "boleka" or "isano"; a common name of isanolic acid comes from the latter. They also discovered isanic acid. The oil seeds contain about 60% lipids. Since the compound is hard to isolate, various analyses have revealed non-homogeneous data on the concentration of isanolic acid in isano o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ongokea Gore
''Ongokea'' is a genus of flowering plants, with one species ''Ongokea gore'' (Boleko). In the APG IV system, the genus is placed in the family Olacaceae. Other sources place it in the segregate family Aptandraceae. Its native range is Western Tropical Africa to Angola, and is notable for the seeds of its edible fruits containing an industrially-useful oil that can undergo explosive polymerization reactions at elevated temperatures. This oil is curious for being rich in diacetylenic and hydroxy-diacetylenic fatty acids, primarily isanic and bolekic acid—that is, instead of a typical single-bonded fatty acid backbone, these acids contain multiple (thermally unstable) triple bonds. Description ''Ongokea gore'' is a medium to large size tree that can reach 40 m tall with a diameter than reach 1.2 m and often has basal root swellings. It has a fairly open crown that is usually in the upper canopy of the forest. The bark is thick, dark brown, grey or black in color, it is commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lipids (journal)
The American Oil Chemists' Society (AOCS) is an international professional organization based in Urbana, Illinois dedicated to providing the support network for those involved with the science and technology related to fats, oils, surfactants, and other related materials. Founded in 1909, AOCS has approximately 2,000 members in 90 countries who are active in a total of ten divisions and six sections, of which only one of the sections is within the United States. History The AOCS was started in May 1909 under the name ''Society of Cotton Products Analysts'' as a group that promoted recommended methods for chemical processes focused on the cottonseed industry. In 1920, the name was changed to American Oil Chemists' Society.National Academy of Sciences - National Research Council (1961), ''Scientific and Technological Societies of the United States and Canada, 7th ed.''; National Academy of Sciences, National Research Council, Washington D.C. In 1976, AOCS hosted the first World C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytochemistry (journal)
''Phytochemistry'' is a Peer review, peer-reviewed scientific journal covering pure and applied plant chemistry, plant biochemistry and molecular biology. It is published by Elsevier and is an official publication for the Phytochemical Society of Europe, the Phytochemical Society of North America, and the Phytochemical Society of Asia. A sister journal ''Phytochemistry Letters'' is published since 2008. Abstracting and indexing ''Phytochemistry'' is abstracted and indexed in: According to the ''Journal Citation Reports'', the journal has a 2020 impact factor of 4.072. References External links *{{Official website, http://www.journals.elsevier.com/phytochemistry/ Biochemistry journals Botany journals Elsevier academic journals English-language journals Academic journals established in 1961 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Progress In Lipid Research
''Progress in Lipid Research'' is a quarterly peer-reviewed scientific journal that covers research on all aspects of research on lipids. The journal was established in 1973 with Ralph Holman (University of Minnesota) as founding editor-in-chief and is published by Elsevier. The current editors-in-chief are Makoto Arita (RIKEN), Kent Chapman (University of North Texas), John Harwood (Cardiff University), Gabor Tigyi (University of Tennessee Health Science Center), Markus Wenk (National University of Singapore). Abstracting and indexing The journal is abstracted and indexed in Chemical Abstract Service, Science Citation Index Expanded, and Scopus. According to the ''Journal Citation Reports'', the journal has a 2021 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
