|
Heptatriacontanoic Acid
Heptatriacontanoic acid, or heptatriacontylic acid, is a 37-carbon saturated fatty acid. Sources Heptatriacontanoic acid is present in ''Abelmoschus manihot'' and ''Alpinia nigra''. Heptatriacontanoic acid was also measured in zooplankton. Compounds The compound 4,21-dimethyl-5,19-di-(trans)-enoyl-heptatriacontanoic acid is the "structure of the major homolog of free mycobacteric acids" of '' Mycobacterium brumae''. Preparation The expired U.S. patent 5502226 covers a method of ω-hydroxy acid preparation that includes heptatriacontanoic acid. See also *List of saturated fatty acids *List of carboxylic acids Carboxylic acids are organic acids characterized by a carboxyl (-COOH) functional group. The naming of these compounds is governed by IUPAC nomenclature, which ensures systematic and consistent naming of chemicals. Numerous organic compounds have o ... References External links {{Fatty acids Fatty acids Alkanoic acids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon
Carbon () is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent In chemistry, the valence (US spelling) or valency (British spelling) of an element is the measure of its combining capacity with other atoms when it forms chemical compounds or molecules. Description The combining capacity, or affinity of an ...—its atom making four electrons available to form covalent bond, covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon makes up only about 0.025 percent of Earth's crust. Three Isotopes of carbon, isotopes occur naturally, Carbon-12, C and Carbon-13, C being stable, while Carbon-14, C is a radionuclide, decaying with a half-life of about 5,730 years. Carbon is one of the Timeline of chemical element discoveries#Ancient discoveries, few elements known since antiquity. Carbon is the 15th Abundance of elements in Earth's crust, most abundant element in the Earth's crust, and the Abundance of the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saturated Fatty Acid
A saturated fat is a type of fat in which the fatty acid chains have all single bonds. A fat known as a glyceride is made of two kinds of smaller molecules: a short glycerol backbone and fatty acids that each contain a long linear or branched chain of carbon (C) atoms. Along the chain, some carbon atoms are linked by single bonds (-C-C-) and others are linked by double bonds (-C=C-). A double bond along the carbon chain can react with a pair of hydrogen atoms to change into a single -C-C- bond, with each H atom now bonded to one of the two C atoms. Glyceride fats without any carbon chain double bonds are called saturated because they are "saturated with" hydrogen atoms, having no double bonds available to react with more hydrogen. Most animal fats are saturated. The fats of plants and fish are generally unsaturated. Various foods contain different proportions of saturated and unsaturated fat. Many processed foods like foods deep-fried in hydrogenated oil and sausage are high in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abelmoschus Manihot
''Abelmoschus manihot'', the aibika, is a flowering plant in the family Malvaceae. It was formerly considered a species of ''Hibiscus'', but is now classified in the genus ''Abelmoschus''. The plant is also known as the sunset muskmallow, sunset hibiscus, or hibiscus manihot. Applications In the Philippines it is known variously as ''lagikway'', ''likway'', ''gikway'', ''barakue'', or ''nating saluyot''. Its leaves and shoots are eaten as a vegetable, similar to the related ''saluyot'' (''Corchorus olitorius''). The leaves are added to dishes like tinola, sinigang, and pinangat, or eaten in salads. In Japanese, this plant is known as ''tororo aoi'' and is used to make ''neri'', a starchy substance used in making the traditional Japanese paper ''washi''. In Korean, this plant is known as ''hwang chok kyu'' and is used to make ''dak pul'', which assists in making ''hanji'' (Korean paper). Chemical constituents A chromatographic and spectroscopic analysis published in '' China ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpinia Nigra
''Alpinia nigra'' (synonyms ''Alpinia allughas'' Retz. and ''Zingiber nigrum'' Gaertn.) is a medium-sized herb belonging to the ginger family. The rhizome is well known in many Asian cultures as a medicinal and culinary item. In many Asian tribal communities it is a part of the diet along with rice. It is endemic to south-east Asia including Bhutan, China, India, Thailand, Bangladesh, Burma and Sri Lanka. In India it is found mainly in the hillocks and riversides of northeastern states such as Assam, Mizoram and Tripura. Description ''Alpinia nigra'' is a biennial herbaceous plant. It is morphologically characterized by the presence of a rhizome, simple, wide-brim leaves protected by showy bracts, and terminal inflorescences. It has a soft, leafy stem about 1.5–3 m high. Leaves are sessile or subsessile, elongated and pointed at the end. Its leaves are single cotyledons, shaped to look like a pike, about 7–9 cm wide, and about 20–40 cm long. The fruit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zooplankton
Zooplankton are the animal component of the planktonic community ("zoo" comes from the Greek word for ''animal''). Plankton are aquatic organisms that are unable to swim effectively against currents, and consequently drift or are carried along by currents in the ocean, or by currents in seas, lakes or rivers. Zooplankton can be contrasted with phytoplankton, which are the plant component of the plankton community ("phyto" comes from the Greek word for ''plant''). Zooplankton are heterotrophic (other-feeding), whereas phytoplankton are autotrophic (self-feeding). This means zooplankton cannot manufacture their own food but must eat other plants or animals instead — in particular they eat phytoplankton. Zooplankton are generally larger than phytoplankton, most are microscopic, but some (such as jellyfish) are macroscopic and can be seen with the naked eye. Many protozoans (single-celled protists that prey on other microscopic life) are zooplankton, including zooflagellates, fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Purdue University College Of Agriculture
Purdue University is a public land-grant research university in West Lafayette, Indiana, and the flagship campus of the Purdue University system. The university was founded in 1869 after Lafayette businessman John Purdue donated land and money to establish a college of science, technology, and agriculture in his name. The first classes were held on September 16, 1874, with six instructors and 39 students. It has been ranked as among the best public universities in the United States by major institutional rankings, and is renowned for its engineering program. The main campus in West Lafayette offers more than 200 majors for undergraduates, over 70 masters and doctoral programs, and professional degrees in pharmacy, veterinary medicine, and doctor of nursing practice. In addition, Purdue has 18 intercollegiate sports teams and more than 900 student organizations. Purdue is the founding member of the Big Ten Conference and enrolls the largest student body of any individu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homology (biology)
In biology, homology is similarity due to shared ancestry between a pair of structures or genes in different taxa. A common example of homologous structures is the forelimbs of vertebrates, where the wings of bats and birds, the arms of primates, the front flippers of whales and the forelegs of four-legged vertebrates like dogs and crocodiles are all derived from the same ancestral tetrapod structure. Evolutionary biology explains homologous structures adapted to different purposes as the result of descent with modification from a common ancestor. The term was first applied to biology in a non-evolutionary context by the anatomist Richard Owen in 1843. Homology was later explained by Charles Darwin's theory of evolution in 1859, but had been observed before this, from Aristotle onwards, and it was explicitly analysed by Pierre Belon in 1555. In developmental biology, organs that developed in the embryo in the same manner and from similar origins, such as from matching p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycobacterium Brumae
''Mycobacterium brumae'' is a rapidly growing environmental mycobacterial species identified in 1993. Aside from one 2004 report of a catheter related bloodstream infection no other infections by this organism have been reported. It was first isolated from water, soil and one human sputum sample in Spain. Description Microscopy *Gram-positive, nonmotile, mostly strongly acid-fast rods, 2.0-2.5 µm long and 0.3 to 0.5 µm wide. Colony characteristics *Flat, rough, and undulated yellow, nonphotochromogenic colonies Physiology *Rapid growth occurs within 5 days at 25 °C, 30 °C and 37 °C, but not at 45 °C on Löwenstein-Jensen medium and Middlebrook 7H10 agar. *Production of thermostable catalase. *Positive for β-glucosidase, nitrate reductase, penicillinase, trehalase, urease and iron uptake. *Tween 80 hydrolysis after 10 days. *No accumulation of niacin, no degradation of salicylate to catechol. *No growth on MacConkey agar without crystal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omega Hydroxy Acid
Omega hydroxy acids (also known as ω-hydroxycarboxylic acids) are a class of naturally occurring straight-chain aliphatic organic acids ''n'' carbon atoms long with a carboxyl group at position 1 (the starting point for the family of carboxylic acids), and a hydroxyl at terminal position ''n'' where ''n'' > 3. The C16 and C18 omega hydroxy acids 16-hydroxy palmitic acid and 18-hydroxy stearic acid are key monomers of cutin in the plant cuticle. The polymer cutin is formed by inter-esterification of omega hydroxy acids and derivatives of them that are substituted in mid-chain, such as 10,16-dihydroxy palmitic acid.T.J. Walton TJ and P.E. Kolattukudy (1972) Enzymatic conversion of 16-hydroxypalmitic acid into 10,16-dihydroxypalmitic acid in ''Vicia faba'' epidermal extracts. Biochem Biophys Res Communications 46, (1), 16–21P. J. Holloway (1982) The chemical constitution of plant cutins. p45-85 in In "The Plant Cuticle". ed. by DF Cutler, KL Alvin and CE Price. Academic Press, London. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Saturated Fatty Acids
See also *List of unsaturated fatty acids *Carboxylic acid **List of carboxylic acids *Dicarboxylic acid {{DEFAULTSORT:List Of Saturated Fatty Acids Saturated Fatty Acids A saturated fat is a type of fat in which the fatty acid chains have all single bonds. A fat known as a glyceride is made of two kinds of smaller molecules: a short glycerol backbone and fatty acids that each contain a long linear or branched c ... Alkanoic acids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Carboxylic Acids
Carboxylic acids are organic acids characterized by a carboxyl (-COOH) functional group. The naming of these compounds is governed by IUPAC nomenclature, which ensures systematic and consistent naming of chemicals. Numerous organic compounds have other common names, often originating in historical source material thereof. The systematic IUPAC name is not always the preferred IUPAC name, for example, lactic acid is a common, and also the preferred, name for what systematic rules call 2-hydroxypropanoic acid. This list is ordered by the number of carbon atoms in a carboxylic acid. C1 C2 C3 C4 C5 C6 C7 C8 2-6 dimethyl octen dioic acid C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 {, class="wikitable" , - bgcolor="#efefef" , IUPAC name, , Common name, , Structural formula , - , hexacosanoic acid, , cerotic acid, , CH3(CH2)24COOH Carboxylic acids Carboxylic acids In organic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fatty Acids
In chemistry, particularly 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 unsatura ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
