|
Decanal
Decanal is an organic compound with the chemical formula . A colorless oil, it is classified as an aldehyde. Occurrence Decanal occurs naturally in citrus, along with octanal, citral, and sinensal, in buckwheat, and in coriander essential oil. It is used in fragrances and flavoring. Preparation Decanal can be prepared by oxidation of the related alcohol 1-Decanol, decanol. Safety For safety information see the MSDS. References {{Reflist Fatty aldehydes Sweet-smelling chemicals Alkanals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fatty Aldehydes
Fatty aldehydes are Aliphatic compound, aliphatic, long-chain aldehydes which may be mono- or Polyunsaturated aldehyde, polyunsaturated. The fatty aldehydes include compounds such as octanal, nonanal, decanal or dodecanal. The nomenclature is derived from the nomenclature of the alkanes, the ending ''-al'' is added to indicate the aldehyde group. Occurrence Fatty aldehydes are a natural component of many Natural product, natural ingredients such as the essential oils of various citrus fruits. Decanal, for example, is a component of orange peel. The Pheromone, pheromone cocktails of various insect pheromones contain fatty aldehydes. Fat aldehydes were also detected in the heart muscle of mammals. Preparation Fatty aldehydes can be prepared by dehydrogenation of fatty alcohols on copper-zinc Catalysis, catalysts. By the hydroformylation of alkenes, fatty aldehydes are produced on a large industrial scale. Use A large proportion of the fatty aldehydes prepared by hydroformylat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aldehyde
In organic chemistry, an aldehyde () (lat. ''al''cohol ''dehyd''rogenatum, dehydrogenated alcohol) is an organic compound containing a functional group with the structure . The functional group itself (without the "R" side chain) can be referred to as an aldehyde but can also be classified as a formyl group. Aldehydes are a common motif in many chemicals important in technology and biology. Structure and bonding Aldehyde molecules have a central carbon atom that is connected by a double bond to oxygen, a single bond to hydrogen and another single bond to a third substituent, which is carbon or, in the case of formaldehyde, hydrogen. The central carbon is often described as being sp2- hybridized. The aldehyde group is somewhat polar. The bond length is about 120–122 picometers. Physical properties and characterization Aldehydes have properties that are diverse and that depend on the remainder of the molecule. Smaller aldehydes such as formaldehyde and acetaldehyde are solubl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dean (Christianity)
A dean, in an ecclesiastical context, is a cleric holding certain positions of authority within a religious hierarchy. The title is used mainly in the Catholic Church, the Anglican Communion, and many Lutheran denominations. A dean's assistant is called a sub-dean. History Latin in the Roman military was the head of a group of ten soldiers within a '' centuria'', and by the 5th century it was the head of a group of ten monks. It came to refer to various civil functionaries in the later Roman Empire.''Oxford English Dictionary'' s.v.' Based on the monastic use, it came to mean the head of a chapter of canons of a collegiate church or cathedral church. Based on that use, deans in universities now fill various administrative positions. Latin ''decanus'' should not be confused with Greek ''diákonos'' (διάκονος), from which the word deacon derives, which describes a supportive role. Officials In the Catholic Church, the Dean of the College of Cardinals and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dean (education)
Dean is a title employed in academic administrations such as colleges or universities for a person with significant authority over a specific academic unit, over a specific area of concern, or both. In the United States and Canada, deans are usually university professors who serve as the heads of a university's constituent colleges and schools. Deans are common in private preparatory schools, and occasionally found in middle schools and high schools as well. Origin A "dean" (Latin: '' decanus'') was originally the head of a group of ten soldiers or monks. Eventually an ecclesiastical dean became the head of a group of canons or other religious groups. When the universities grew out of the cathedral schools and monastic schools, the title of dean was used for officials with various administrative duties. Use Bulgaria and Romania In Bulgarian and Romanian universities, a dean is the head of a faculty, which may include several academic departments. Every faculty unit of u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2-Decanone
2-Decanone is a ketone with the chemical formula C10 H20 O. Occurrence 2-Decanone can be found in meats, dairy products and eggs, fruits (banana, mountain papaya, berries), vegetables (potato, mushroom, endive, soya bean, chayote, kumazase), and grains such as maize, rice, and oats. It also is present in fish, some nuts, honey, ginger, garlic, vanilla, hop oil, mate, brandy, tea, and coffee. It is found in the highest concentrations in milk and hop oil. 2-Decanone was also found at varying percentages in the essential oils of plants within the ''Ruta'' genus, including '' R. montana'' and '' R. chalepensis''. Within the stem bark of ''Commiphora rostrata'', 2-decanone was found at 69%. Applications 2-Decanone has been found to possess strong fumigant activity against the maize weevil. However, it is less repellent towards the maize weevil than other alkanones. Synthesis 2-Decanone can be synthesized by reacting 2-decanol with permanganic acid and copper sulfate Copper ... [...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] |
Chemical Formula
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and ''plus'' (+) and ''minus'' (−) signs. These are limited to a single typographic line of symbols, which may include subscripts and superscripts. A chemical formula is not a chemical name since it does not contain any words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula. Chemical formulae can fully specify the structure of only the simplest of molecules and chemical substances, and are generally more limited in power than chemical names and structural formulae. The simplest types of chemical formulae are called '' empirical formulae'', which use letters and numbers indicating the numerical ''proportions'' of atoms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citrus
''Citrus'' is a genus of flowering trees and shrubs in the family Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, mandarins, lemons, grapefruits, pomelos, and limes. ''Citrus'' is native to South Asia, East Asia, Southeast Asia, Melanesia, and Australia. Indigenous people in these areas have used and domesticated various species since ancient times. Its cultivation first spread into Micronesia and Polynesia through the Austronesian expansion (–1500 BCE). Later, it was spread to the Middle East and the Mediterranean () via the incense trade route, and from Europe to the Americas. Renowned for their highly fragrant aromas and complex flavor, citrus are among the most popular fruits in cultivation. With a propensity to hybridize between species, making their taxonomy complicated, there are numerous varieties encompassing a wide range of appearance and fruit flavors. Evolution Evolutionary history The large cit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octanal
Octanal is the organic compound, an aldehyde, with the chemical formula CH3(CH2)6CHO. A colorless fragrant liquid with a fruit-like odor, it occurs naturally in citrus oils. It is used commercially as a component in perfumes and in flavor production for the food industry. It is usually produced by hydroformylation In organic chemistry, hydroformylation, also known as oxo synthesis or oxo process, is an industrial process for the production of aldehydes () from alkenes (). This chemical reaction entails the net addition of a formyl group () and a hydrogen ... of heptene and the dehydrogenation of 1-octanol. Octanal can also be referred to as caprylic aldehyde or C8 aldehyde. References *Silberberg, 2006, Principles of ChemistryOctanal Fatty aldehydes Alkanals {{organic-compound-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citral
Citral is an acyclic monoterpene aldehyde. Being a monoterpene, it is made of two isoprene units. Citral is a collective term which covers two geometric isomers that have their own separate names; the ''E''-isomer is named geranial (''trans''-citral; α-citral) or citral A. The ''Z''-isomer is named neral (''cis''-citral; β-citral) or citral B. These stereoisomers occur as a mixture, often not in equal proportions; e.g. in essential oil of Australian ginger, the neral to geranial ratio is 0.61. Natural Occurrence Citral is present in the volatile oils of several plants: Further, in the lipid fraction (essential oil) of Australian ginger (51–71%) Of the many sources of citral, the Australian myrtaceous tree, lemon myrtle, '' Backhousia citriodora'' F. Muell. (of the family Myrtaceae), is considered superior. Uses Citral is a precursor in the industrial production of vitamin A, vitamin E, vitamin K. Citral is also precursor to lycopene, ionone and methylionone. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buckwheat
Buckwheat (''Fagopyrum esculentum'') or common buckwheat is a flowering plant in the knotweed family Polygonaceae cultivated for its grain-like seeds and as a cover crop. Buckwheat originated around the 6th millennium BCE in the region of what is now Yunnan, Yunnan Province in southwestern China. The name "buckwheat" is used for several other species, such as ''Fagopyrum tataricum'', a domesticated food plant raised in Asia. Despite its name, buckwheat is not closely related to wheat. Buckwheat is not a cereal, nor is it a member of the Poaceae, grass family. It is related to sorrel, Polygonum, knotweed, and rhubarb. Buckwheat is considered a pseudocereal because the high starch content of the seeds enables buckwheat to be cooked and consumed like a cereal. Etymology The name "buckwheat" or "beech wheat" comes from its tetrahedral seeds, which resemble the much larger seeds of the beech nut from the beech, beech tree, and the fact that it is used like wheat. The word may be a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
