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Encyclopedia results for Aromatic amino acids

Aromatic amino acids





Encyclopedia results for Aromatic amino acids

  1. Aromatic amino acids

    Image L phenylalanine skeletal.png thumb phenylalanine Image L tryptophan skeletal.png thumb tryptophan Image L tyrosine skeletal.png thumb tyrosine Image Histidin Histidine.svg thumb histidine Image Thyroxine 2D skeletal.png thumb thyroxine Aromatic amino acids are amino acids that include an Aromaticity aromatic ring. Examples include Among 20 standard amino acids phenylalanine , tryptophan , histidine and tyrosine Others thyroxine See also Aromatic L amino acid decarboxylase Phenylalanine , histidine , and tryptophan are essential amino acids. Since they are not synthesized in the human body, they must be derived from the diet. Tyrosine is semi essential it can be synthesized, but only from phenylalanine. A lack of the enzyme phenylalanine hydroxylase used in tyrosine synthesis causes phenylketonuria . Many plants and microorganisms synthesize aromatic amino acids. Many herbicides inhibit aromatic acid synthesis, which is why they can be toxic to pets and humans. Clarify date July 2010 External links MeshName Aromatic Amino Acids MetabolismMap Category Amino acids Category Aromatic amino acids biochemistry stub zh ...   more details



  1. Branched Chain Amino Acids

    Merge to Branched chain amino acid date July 2011 Branched Chain Amino Acids refers to specific amino ... carbon atoms, which sets them apart from other amino acids. The branched chain amino acids were scientifically ... acids are some of the most essential amino acids needed in the body. Since these amino acids are not synthesized ... amino acids or taken through certain methods such as supplementation. The branched chain amino acids ... into other parts of the body. Athletes are induced to taking branched chain amino acids as supplements because they alone are in need of these branched chain amino acids to enhance their performance ... Chain Amino Acids Leucine is one of the 10 essential amino acids, and this amino acid develops growth ... Isoleucine is also one of the 10 essential amino acids that inhibit root growth when injected in plants ... essential amino acids that, like leucine and isoleucine, it encourages protein synthesis and muscle ... name platelle Platelle, Cameron. Branched Chain Amino Acids. Blackwell Science Asia Pty Ltd 15.7 2000 ... ref The essential amino acids are also not manufactured in mammals. However, Valine, Isoleucine, and Leucine ... the flow of the amino acids to inhibit growth. ref name vitamins Vitamins and Health supplements guide. Branched Chain Amino Acids BCAA s . Vitamin supplements guide, 2005 2006. Web. 3 Feb 2011. http www.vitamins supplements.org amino acids branched chain amino acids.php ref .Scientists isolated these amino acids from specific herbicides plants and discovered their essential role in the mammalian ... chain amino acids that are located in the chloroplast of the leaves. Scientists discovered that these branched chain amino acids enhanced growth of the plant by providing protein synthesis into the tissue ... amino acids. The herbicides plants produce a certain amount of energy as a repercussion of the synthesis of these branched chain amino acids. As scientists experimented on rats, the results showed ... Sources containing Branched Chain Amino Acids. Dairy Products red meat corn Beans Legumes Brown rice ...   more details



  1. Aromatic-amino-acid transaminase

    enzyme Name aromatic amino acid transaminase EC number 2.6.1.57 CAS number 37332 38 0 IUBMB EC number 2 6 1 57 GO code 0008793 image width caption In enzymology , an aromatic amino acid transaminase EC number 2.6.1.57 is an enzyme that catalysis catalyzes the chemical reaction an aromatic amino acid 2 oxoglutarate math rightleftharpoons math an aromatic oxo acid L glutamate Thus, the two substrate biochemistry substrates of this enzyme are aromatic amino acid and 2 oxoglutarate , whereas its two product chemistry products are aromatic oxo acid and L glutamate . This enzyme belongs to the family of transferase s, specifically the transaminases , which transfer nitrogenous groups. The systematic name of this enzyme class is aromatic amino acid 2 oxoglutarate aminotransferase . Other names in common use include aromatic amino acid aminotransferase , aromatic aminotransferase , and ArAT . This enzyme participates in 6 metabolism metabolic pathways methionine metabolism , tyrosine metabolism , phenylalanine metabolism , phenylalanine, tyrosine and tryptophan biosynthesis , novobiocin biosynthesis , and alkaloid biosynthesis i . It employs one cofactor biochemistry cofactor , pyridoxal phosphate . Structural studies As of late 2007, 13 tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 1AY4 , PDB link 1AY5 , PDB link 1AY8 , PDB link 2AY1 , PDB link 2AY2 , PDB link 2AY3 , PDB link 2AY4 , PDB link 2AY5 , PDB link 2AY6 , PDB link 2AY7 , PDB link 2AY8 , PDB link 2AY9 , and PDB link 3TAT . References reflist 1 cite journal author Mavrides C, Orr W date 1975 title Multispecific aspartate and aromatic amino acid aminotransferases in Escherichia coli journal J. Biol. Chem. volume 250 pages 4128&ndash 33 pmid 236311 issue 11 transferase stub Category EC 2.6.1 Category Pyridoxal phosphate enzymes Category Enzymes of known structure ...   more details



  1. Mycosporine-like amino acids

    Mycosporine like amino acids MAAs are small secondary metabolites produced by organisms that live in environments ... Mycosporine like Amino Acids. Folia Microbiology. 49 4 . 339 352. ref Most research done on MAAs is on their light ... like amino acids are rather small molecules 400 Dalton Da . The structures of over 30 Mycosporine like amino acids have been resolved and all contain a central cyclohexenone or cyclohexenimine ring ... exposure is the biosynthesis of small molecule sunscreens. Mycosporine like amino acids MAAs have been ... like amino acids protect against inhibition of photosynthesis. J Phycol 34 928 938. ref and some Antarctic ... amino acids UV protectants or multipurpose secondary metabolites? FEMS Microbiol. Lett 269 1 10. ref ... of MAAs . ref Oren, A. 1997 . Mycosporine like amino acids as osmotic solutes in a community ... amino acids in coral reef organisms a biochemical and environmental perspective. J Phycol 34 418 ...?cookieSet 1&journalCode physiol MYCOSPORINE LIKE AMINO ACIDS AND RELATED GADUSOLS ...&SRETRY 0 Mycosporines and mycosporine like amino acids UV protectants or multipurpose secondary metabolites ... Mycosporine like amino acids&cd 3&hl en&ct clnk&gl us Mycosporine Like Amino Acids and Marine ... amino acids in planktonic Chlorella bearing ciliates Ciliophora PubMed Central http www.photobiology.com photobiology99 contrib klisch index.html Mycosporine like amino acids in the marine dinoflagellate ... Like Amino Acids MAAs in Harmful Bloom Forming Dinoflagellates Effects of Ultraviolet Radiation, Vertical ... search?q cache 3AUtFo9dKSH4EJ 3Awww.mibellebiochemistry.com 2Fpdfs 2FMycosporine like amino acids natural ... like amino acids&hl en&gl us Mycosporine like amino acids International Journal http www.springerlink.com content u4176l5765627t40 Antioxidant activity of mycosporine like amino acids isolated from ..., Effects of Abiotic Stressors on Synthesis of the Mycosporine like Amino Acid Shinorine in the Cyanobacterium ... as part of the Colorado State University, Microbial Physiology class of Spring 2011. Category Amino ...   more details



  1. Biopterin-dependent aromatic amino acid hydroxylase

    of phenylketonuria , the most common inborn error of Amino acid Chemical properties amino acid ...   more details



  1. Aromatic-amino-acid?glyoxylate transaminase

    enzyme Name aromatic amino acid glyoxylate transaminase EC number 2.6.1.60 CAS number 67185 76 6 IUBMB EC number 2 6 1 60 GO code 0047313 image width caption In enzymology , an aromatic amino acid glyoxylate transaminase EC number 2.6.1.60 is an enzyme that catalysis catalyzes the chemical reaction an aromatic amino acid glyoxylate math rightleftharpoons math an aromatic oxo acid glycine Thus, the two substrate biochemistry substrates of this enzyme are aromatic amino acid and glyoxylate , whereas its two product chemistry products are aromatic oxo acid and glycine . This enzyme belongs to the family of transferase s, specifically the transaminases , which transfer nitrogenous groups. The systematic name of this enzyme class is aromatic amino acid glyoxylate aminotransferase . References reflist 1 cite journal author Harada I, Noguchi T, Kido R date 1978 title Purification and characterization of aromatic amino acid glyoxylate aminotransferase from monkey and rat liver journal Hoppe. Seylers. Z. Physiol. Chem. volume 359 pages 481&ndash 8 pmid 25837 issue 4 transferase stub Category EC 2.6.1 Category Enzymes of unknown structure ...   more details



  1. Aromatic L-amino acid decarboxylase

    May doi 10.1002 ajmg.10379 pmid 11992572 ref See also Aromatic amino acids References Reflist External links MeshName Aromatic L Amino Acid Decarboxylases Carbon carbon lyases Neurotransmitter metabolism ...enzyme Name aromatic L amino acid decarboxylase EC number 4.1.1.28 CAS number 9042 64 2 IUBMB EC number 4 1 1 28 GO code 0004058 image DOPA decarboxylase dimer 1JS3.png width caption Ribbon diagram of a domestic pig DOPA decarboxylase protein dimer dimer . ref name pmid11685243 PDB 1JS3 cite journal author Burkhard P, Dominici P, Borri Voltattorni C, Jansonius JN, Malashkevich VN title Structural insight into Parkinson s disease treatment from drug inhibited DOPA decarboxylase journal Nat. Struct. Biol. volume 8 issue 11 pages 963 7 year 2001 month November pmid 11685243 doi 10.1038 nsb1101 963 url issn ref protein Name DOPA decarboxylase aromatic small L small amino acid decarboxylase caption image width 250 HGNCid 2719 Symbol DDC AltSymbols EntrezGene 1644 OMIM 107930 RefSeq NM 000790 UniProt P20711 PDB ECnumber 4.1.1.28 Chromosome 7 Arm p Band 11 LocusSupplementaryData Aromatic L amino acid decarboxylase EC number 4.1.1.28 , synonyms DOPA decarboxylase , tryptophan decarboxylase , 5 hydroxytryptophan decarboxylase , AAAD is a lyase enzyme . Reactions It catalyzes several different decarboxylation reactions L DOPA to dopamine a neurotransmitter 5 HTP to serotonin 5 HT also a neurotransmitter tryptophan to tryptamine a precursor to many alkaloids found in plants and animals The enzyme uses pyridoxal phosphate , the active form of vitamin B6, as a cofactor biochemistry cofactor . As a rate limiting step In normal dopamine and serotonin 5 HT neurotransmitter synthesis, AAAD is not the rate limiting step in either reaction. However, AAAD becomes the rate limiting step of dopamine synthesis in patients treated with L DOPA such as in Parkinson s Disease , and the rate limiting step of serotonin synthesis in people treated with 5 HTP such as in mild Clinical depression depression ...   more details



  1. Aromatic L-amino acid decarboxylase inhibitor

    An aromatic L amino acid decarboxylase inhibitor synonyms DOPA decarboxylase inhibitor , DDCI and AAADI is a drug which enzyme inhibition inhibit s the synthesis of dopamine by the enzyme aromatic L amino acid decarboxylase AAAD, or DOPA decarboxylase, DDC . Indications Peripheral DDCIs incapable of crossing the protective blood brain barrier BBB are used in augmentation of L DOPA Levodopa in the therapy treatment of Parkinson s disease PD to block the peripheral conversion of L DOPA into dopamine for the purpose of reducing adverse adverse effect side effect s. ref name pmid4425849 cite journal author title Editorial Dopa decarboxylase inhibitors journal British medical journal volume 4 issue 5939 pages 250 1 year 1974 month November pmid 4425849 pmc 1612227 doi 10.1136 bmj.4.5939.250 url ref Combined l dopa and DDCI therapy does not inherently decrease peripheral cardiovascular side effects of l dopa administration however, combined therapy potentiates the central effects of l dopa by decreasing the dose dependency 4 5 fold, therein allowing for effective Parkinson s Disease treatment without cardiovascular risk associated with high peripheral dopamine. ref Cotzias, G. C., Papavasiliou, P. S., and Gellene, R., New England Journalof Medicine, 1969, 280, 337. ref ref Yahr, M. D., in Advances in Neurology, ed. M. D. Yahr, p. vi, vol. 2. New York, Raven Press, 1973. ref List of DDCIs Benserazide Madopar, Prolopa, Modopar, Madopark, Neodopasol, EC Doparyl, etc Carbidopa Lodosyn, Sinemet, Parcopa, Atamet, Stalevo, etc Methyldopa Aldomet, Aldoril, Dopamet, Dopegyt, etc References Reflist 2 Enzyme inhibition Antiparkinson Dopaminergics Category AAAD inhibitors nervous system drug stub ...   more details



  1. File:Active Site with labeled amino acids and NAD.png

    Summary Information Description Chimera picture of the active site ALDH2 with labeled amino acids and NAD Source self made Date May 5 Author User Westsummer Westsummer User talk Westsummer talk other versions Licensing PD self date February 2009 Copy to Wikimedia Commons bot Fbot priority true ...   more details



  1. Stable isotope labeling by amino acids in cell culture

    containing normal amino acids . In contrast, the second population is fed with growth medium containing amino acids labeled with stable non radioactive heavy isotope s. For example, the medium can ... 2005 title Stable isotope labeling with amino acids in cell culture SILAC for studying dynamics of protein ... proteomics using stable isotope labeling with amino acids in cell culture journal Nature Protocols ... method where the labelled amino acids are added to the growth medium for only a short period of time ... substituted arginine in stable isotope labeling by amino acids in cell culture SILAC journal Journal ..., Mann M year 2006 title A practical recipe for stable isotope labeling by amino acids in cell culture ..., Mann M year 2007 title Stable isotope labeling by amino acids in cell culture for quantitative proteomics ... I, Kristensen DB, Steen H, Pandey A, Mann M year 2002 title Stable isotope labeling by amino acids in cell culture, SILAC, as a simple and accurate approach to expression proteomics journal ... S, Gu S, Bradbury EM, Chen X year 2002 title Amino acid residue specific stable isotope labeling ...   more details



  1. File:AROMATIC-L-AMINO-ACID DECARBOXYLASE.png

    Summary L. Van Warren, http www.wdv.com, image constructed by author using ChemBio3D Ultra from PDB file http www.genome.jp dbget bin www bget?pdb 1JS3 withATOM Licensing self cc by 3.0 ...   more details



  1. Aromatic sulfonation

    , Leipzig, 1985, p. 511, ISBN 3 342 00280 8. ref Application Aromatic sulfonic acids are intermediates ...Aromatic sulfonation is an organic reaction in which a hydrogen atom on an aromatic hydrocarbon arene is replaced by a sulfonic acid functional group in an electrophilic aromatic substitution . ref JerryMarch . ref File Benzene sulfonation overview.png center 500px Sulfonation of Benzene to benzene sulfonic acid Mechanism Sulfur trioxide is the electrophile in this electrophilic aromatic substitution generated from concentrated sulfuric acid or fuming sulfuric acid when heated. With benzene as substrate the reaction product is benzenesulfonic acid . Image Chem Mech SO3FormationWH2SO4.png generation of sulfur trioxide from sulfuric acid In contrast to aromatic nitration and other electrophilic aromatic substitutions this reaction is Reversible reaction reversible . Sulfonation takes place in concentrated acidic conditions and desulfonation is the mode of action in a dilute hot aqueous acid. It is very useful in protection group protecting the aromatic system because of this reversibility. Piria reaction A classic named reaction is the Piria reaction R. Piria , 1851 in which nitrobenzene is reacted with a metal bisulfite forming an aminosulfonic acid as a result of combined nitro group reduction and sulfonation. ref Piria, Ann. 78 31 1851 . ref ref THE PIRIA REACTION. I. THE OVER ALL REACTION W. H. Hunter, Murray M. Sprung J. Am. Chem. Soc. , 1931, 53 4 , pp 1432 1443 DOI 10.1021 ja01355a037 . ref File Piria reaction.png 400px center The Piria Reaction Tyrer sulfonation process In the Tyrer sulfonation process 1917 ref US patent 1,210,725 ref , at some time of technological importance, benzene vapor is led through a vessel containing 90 sulfuric acid the temperature of which ... layer fed back to the vessel. In this way a 80 yield is obtained. File Amino Sulfonic Acid Synthesis ... Electrophilic halogenation Nitration References Reflist DEFAULTSORT Aromatic Sulfonation Category ...   more details



  1. Nicotinic acids

    Image Niacin.png thumb Image Nimodipine.png thumb Nimodipine Image Arecolin Arecoline.svg thumb 150px Arecoline Nicotinic acids are derivatives of pyridine which have a carboxy group. Although the term niacin is sometimes used interchangeably with nicotinic acid , it is more precise to only apply it to the 1 3 meta substituted form. Examples include arecoline nicotinamide nicorandil nikethamide nimodipine See also isonicotinic acids External links MeshName Nicotinic Acids organic chem stub Category Nicotinic acids ...   more details



  1. Aromatic amine

    Unreferenced date December 2009 An aromatic amine is an amine with an aromaticity aromatic substituent that is nitrogen N hydrogen H sub 2 sub , nitrogen N hydrogen H or nitrogen group s attached to an aromatic hydrocarbon , whose structure usually contains one or more benzene ring s. Aniline is the simplest example. Aromatic amines, when protonated, usually have lower pKa s are more acidic than their non aromatic analogs. This is due to the delocalization of the lone pair of electrons from the nitrogen into the ring. align center class wikitable colspan 6 align left style background ccccff Representative anilines Aromatic amine CAS number Properties Uses Aniline Image Aniline 2D skeletal.png 50px Aniline 62 53 3 O Toluidine o Toluidine Image O toluidinePIC.svg 100px o toluidine 95 53 4 2,4,6 Trimethylaniline Image TrimethylanilinePIC.svg 100px 88 05 1 O Anisidine Anisidine Image 2 Anisidine.png 75px Anisidine 90 04 0 3 Trifluoromethylaniline Image 3 trifluoromethylanilinePIC.svg 100px 3 trifluoromethylaniline 98 16 8 Intermediate for herbicides, metabolite N Methylaniline N Methylaniline Image N methylaniline.png 60px N methylaniline 100 61 8 See also Aromatic hydrocarbons DEFAULTSORT Aromatic Amine Category Aromatic amines hu Arom s aminok ja pl Aminy aromatyczne pt Amina arom tica sk Aromatick am n zh ...   more details



  1. Cyclohexanecarboxylic acids

    Image Shikimic acid skeletal.png thumb Shikimic acid Image Chorismic acid.png thumb Chorismic acid Image Quinic acid flat.svg thumb Quinic acid Cyclohexanecarboxylic acids are cyclohexanes with a carboxylic acid group affixed. Examples include abscisic acid chlorogenic acid chorismic acid dicyclomine quinic acid shikimic acid tranexamic acid External links MeshName Cyclohexanecarboxylic Acids Category Carboxylic acids organic compound stub ...   more details



  1. Aromatic rice

    Aromatic rice is one of the Oryza sativa Classification major types of rice ref cite web url http www.ers.usda.gov briefing Rice SpecialArticle USricemarket.pdf title The U.S. Rice Export Market publisher United States Department of Agriculture USDA date Nov 2000 br There are four types of rice traded globally indica, japonica rice japonica , aromatic, and glutinous rice glutinous . ref , it is a medium to long grained rice . It is known for its nut fruit nut like aroma and taste , which is caused by the chemical compound 2 acetyl 1 pyrroline . ref cite web url http www.springerlink.com content m53xn058318q4858 title Enhanced resistance to two stem borers in an aromatic rice containing a synthetic cryIA b gene ref Varieties of aromatic rice include basmati , Jasmine rice jasmine , Texmati, Wehani , and wild pecan rice. When cooked, the grains have a light and fluffy texture. References reflist Varieties of rice Category Varieties of rice ja food stub ...   more details



  1. Chloroacetic acids

    In organic chemistry , the chloroacetic acids systematic name chloroethanoic acids are three related chlorocarbon carboxylic acid s Chloroacetic acid chloroethanoic acid , CH sub 2 sub ClCOOH Dichloroacetic acid dichloroethanoic acid , CHCl sub 2 sub COOH Trichloroacetic acid trichloroethanoic acid , CCl sub 3 sub COOH As the number of chlorine atoms increases, the electronegativity of that end of the molecule increases, and the molecule adopts a progressively more ionic bond ionic character its density , boiling point and acidity all increase. border 1 Acid Melting point C Boiling point C Density g cm sup 3 sup acidity constant pK sub a sub ref http www.cem.msu.edu reusch VirtTxtJml acidity2.htm Ionization Constants of Heteroatom Organic Acids ref Acetic acid 16.5 118.1 1.05 4.76 Chloroacetic acid 61 63 189 1.58 2.87 Dichloroacetic acid 9.5 194 1.57 1.25 Trichloroacetic acid 57 196 1.63 0.77 Production Chloroacetic acid is mainly made by hydrolysis hydrolysing trichloroethylene in the presence of sulfuric acid CCl sub 2 sub CHCl 2 H sub 2 sub O CH sub 2 sub ClCOOH 2 HCl Dichloroacetic acid is manufactured in small quantities by reducing trichloroacetic acid. Trichloroacetic acid is made by directly reacting chlorine with acetic acid using a suitable catalyst . Uses Chloroacetic acid is chemical intermediate for production of various pharmaceuticals and insecticide s. Trichloroacetic acid is used for various analytic tests in biochemistry . In sufficient concentration it will cause protein , DNA and RNA to precipitate out of solution . The sodium salt of trichloroacetic acid is used as a weedkiller . Safety All of these acids are unusually strong for organic acids, and should generally be treated with similar care as for strong mineral acids like hydrochloric acid . Even neutral salts however, tend to be significantly toxic, because the ions interfere in biological processes ... Carboxylic acids Category Organochlorides es cidos cloroac ticos fa pl Kwasy chlorooctowe ...   more details



  1. Haloacetic acids

    Haloacetic acids are carboxylic acid s in which a halogen atom takes the place of a hydrogen atom in acetic acid . Thus, in a monohaloacetic acid, a single halogen would replace a hydrogen atom. For example, chloroacetic acid would have the structural formula CH sub 2 sub ClCO sub 2 sub H. In the same manner, in dichloroacetic acid two chlorine atoms would take the place of two hydrogen atoms CHCl sub 2 sub CO sub 2 sub H . The inductive effect caused by the electronegative halogens often result in the higher acidity of these compounds by stabilising the negative charge of the conjugate base . Contaminants in drinking water Haloacetic acids HAAs are a common undesirable by product of drinking water chlorination . Exposure to such disinfection by product s in drinking water has been associated with a number of health outcomes by epidemiological studies, although the putative agent in such studies has not been identified. Citation needed date October 2009 A study published in August 2006 found that total levels of HAAs in drinking water were not affected by storage or boiling, but that filtration was effective in decreasing levels ref cite web url http www.sciencedirect.com science? ob ArticleURL& udi B6V73 4KJTNCB 2& user 10& coverDate 08 2F31 2F2006& rdoc 1& fmt high& orig search& origin search& sort d& docanchor &view c& searchStrId 1450025068& rerunOrigin google& acct C000050221& version 1& urlVersion 0& userid 10&md5 c5892a6d12b76cfe6e857e6178d74d99&searchtype a title Effects of indoor drinking water handling on trihalomethanes and haloacetic acids year 2006 accessdate 2010 09 03 ref . See also Trichloroacetic acid Trifluoroacetic acid References Reflist Further reading http webstore.ansi.org ansidocstore product.asp?sku ISO 23631 3A2006 ANSI http ntp.niehs.nih.gov index.cfm ... www.saskh2o.ca PDF WaterCommittee HaloaceticAcids.pdf Haloacetic Acids For Private Water and Health ... Agency reference on disinfection byproducts Category Carboxylic acids Category Organohalides ...   more details



  1. Diferulic acids

    Diferulic acids also known as dehydrodiferulic acids are organic compounds that have the general chemical formula C sub 20 sub H sub 18 sub O sub 8 sub , they are formed by dimerisation of ferulic acid . Just as ferulic acid is not the proper IUPAC name, the diferulic acids also tend to have trivial names that are more commonly used than the correct IUPAC name. Diferulic acids are found in plant cell walls, particularly those of grasses. Structures There are currently nine known structures for diferulic acids. ref Phenolic compounds as cross links of plant derived polysaccharides, M.Bunzel, J.Ralph and H.Steinhart, Czech J. Food Sci., 22 64 67 2004 . ref They are usually named after the positions on each molecule that form the bond between them. Included in the group are 8,5 DiFA DC and 8,8 DiFA THF , which are not true diferulic acids, but probably have a similar biological function. The 8,5 DiFA DC lost CO sub 2 sub during its formation, the 8,8 DiFA THF gained H sub 2 sub O during its formation. Ferulic acid can also form trimers and tetramers, known as triferulic and tetraferulic acids respectively. ref Structural identification of dehydrotriferulic and dehydrotetraferulic acids isolated from insoluble maize bran fibre, M.Bunzel, J.Ralph, P.Br ning and H.Steinhart, J. Agr. Food ... diferulic acids Erratum the formula of 5,5 diferulic acid actually is one of a 5,6 diferulic acid ... the predominant diferulic acids are 8 O 4 DiFA and 8,5 DiFA respectively. ref Esterified phenolics of the cell ... and K.W.Waldron, J. Agr. Food Chem., 48 6284 6291 2000 ref ref Dehydrodiferulic acids from ... 1365 1368 1997 ref Diferulic acids are thought to have a structural function in plant cell walls, where ...,Planta 216 620 629 2003 ref Preparation Most diferulic acids are not commercially available and must ..., T. Geissman and H. Neukom, Helv. Chim. Acta, 54 1108 1112 1971 . ref Uses Diferulic acids are more ... acids ...   more details



  1. Acids in wine

    Image Wine grape diagram en.svg 390px thumb right Malic and tartaric acid are the primary acids in wine grapes. The acid s in wine are an important component in both winemaking and the finished product of wine. They are present in both grape s and wine, having direct influences on the color, balance wine balance and taste of the wine as well as the growth and vitality of yeast s during fermentation wine fermentation and protecting the wine from bacteria . The measure of the amount of acidity in wine ... of all acids present, while strength of acidity is measured according to pH with most wines having ... of the wine such as tannins wine tannins . There are three primary acids found in wine grapes ... acid can play significant roles. Most of the acids involved with wine are fixed acids with the notable ... to the wine fault known as volatile acidity . Sometimes additional acids are used in winemaking ... extent citric acid, tartaric is one of the fixed acids found in wine grapes. The concentration ... acids while Malbec and Pinot noir generally have lower levels. During flowering , there are high levels ... organic acids found in wine grapes. It is found in nearly every fruit and berry plant but it s most ... of malic acids varies depending on the grape variety with some varieties, like Barbera ... Press 2006 ISBN 0 19 860990 6 ref Other acids Acetic acid is a two carbon organic acid produced in wine during or after the fermentation period. It is the most volatile of the primary acids associated ... ripe and at higher acid levels. ref name Oxford pg 2 3 In the winemaking process, acids aid in enhancing ... as brown deposits. ref name Oxford pg 2 3 Winemakers will sometimes add acids to the wine this is called ... acid. Acids can be added either before or after primary fermentation. They can be added during ... 3 See also Aging of wine Wine chemistry References reflist Category Acids in wine Category Acids Category Organic acids de S ure Wein ...   more details



  1. Amino acid

    synthesis uses the aromatic oxime derivatives of amino acids as activated units. These are added in sequence ...About the class of chemicals the structures and properties of the standard proteinogenic amino acids ... of Amino Acids. The 21 amino acids found in eukaryotes , grouped according to their side chains pKa s and charge at pH Living systems physiological pH 7.4 Amino acids IPAc en icon m i n o , IPAc ..., where the term usually refers to alpha amino acids . An alpha amino acid has the generic Chemical ... chain and is known as an imino acid it falls under the category of special structured amino acids ... carbon atom for example, in gamma amino acids such as gamma amino butyric acid the carbon atom .... The various alpha amino acids differ in which side chain R group is attached to their alpha carbon ... in tryptophan . Amino acids serve as the building blocks of protein s, which are linear chains of amino acids. Amino acids can be linked together in varying sequences to form a vast variety of proteins ... ref Twenty amino acids are naturally incorporated into polypeptides and are called proteinogenic or standard amino acids. These 20 are encoded by the universal genetic code . Nine standard amino acids ... other chemical compound compounds by the human body, and so must be taken in as food. Amino acids are important ... catalysis chiral catalysts . History The first few amino acids were discovered in the early ... to the carboxyl group is called the alpha carbon carbon and amino acids with a side chain bonded to this carbon are referred to as alpha amino acids . These are the most common form found in nature. In the alpha amino acids, the carbon is a chirality chemistry chiral carbon atom, with the exception ... 1 isbn 978 0 7167 7030 5 pages ref In amino acids that have a carbon chain attached to the carbon ... for Amino Acids and Peptides publisher IUPAC IUB Joint Commission on Biochemical Nomenclature year 1983 accessdate 2008 11 17 ref In some amino acids, the amine group is attached to the or carbon ...   more details



  1. Amino alcohol

    merge Alkanolamine discuss Talk Amino alcohol Merger proposal date June 2010 Image Ethanolamine.png thumb right 200px Chemical structure of ethanolamine , a simple amino alcohol. Amino alcohols are organic compound s that contain both an amine functional group and an alcohol group alcohol functional group . Common amino alcohols Ethanolamine s Heptaminol Isoetarine Norepinephrine Propanolamine s Sphingosine Methanolamine simplest amino alcohol External links MeshName Amino Alcohols Category Amines Category Alcohols Amine stub organic chem stub Amino alcohols ca Aminoalcohol es Aminoalcohol eo Aminoalkoholo fr Alcool amin nl Alkanolamine lv Aminospirti pl Hydroksyaminy ru sr Amino alkohol ...   more details



  1. Amino sugar

    Image Alpha D glucosamine.png thumb Glucosamine Image Sialic acid.png thumb Sialic acid In chemistry , an amino sugar contains an amine group in place of a hydroxyl group. ref http www.accessscience.com abstract.aspx?id 028300 Amino sugar , Encyclopedia of Science & Technology Online ref Derivatives of amine containing sugars, such as N acetylglucosamine and sialic acid , while not formally containing an amine, are also considered amino sugars. Aminoglycosides are a class of antimicrobial compounds that inhibit bacterial protein synthesis. These compounds are conjugates of amino sugars and aminocyclitols. Common examples of amino sugars include N Acetylglucosamine N Acetylglucosamine Galactosamine Glucosamine Sialic acid References reflist External links MeshName Amino Sugars Carbohydrates Category Amino sugars orgchem stub ar cs Aminocukry de Aminozucker es Amino az car eo Aminosukero fr Osamine it Aminozuccheri nl Aminosuiker ja pl Aminocukry pt Amino a car sr Amino e er zh ...   more details



  1. Tetsur? Amino

    nihongo Tetsur Amino Amino Tetsur birth name is a Japan ese anime director, born on October 10, 1955 in Chiba Prefecture . In 1988, he started using his name in katakana . He has directed noted anime series as Bakusou Kyoudai Let s & Go , I Love Bubu Chacha , the Macross 7 series and its continuations Macross 7 The Galaxy s Calling Me and Macross Dynamite 7 , Shipp Iron Leaguer and Aidoru Densetsu Eriko . External links ja icon http www9.ocn.ne.jp u3ta top.html ann people id 961 name Tetsuro Amino imdb name id 0024930 name Tetsuro Amino Persondata Metadata see Wikipedia Persondata . NAME Amino, Tetsuro ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH 1955 PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Amino, Tetsuro Category 1955 births Category Living people Category Anime directors Category People from Chiba Prefecture Category Sunrise company people Category Macross Category Japanese animators Anime bio stub it Tetsur Amino ja ...   more details



  1. Tomoo Amino

    Infobox basketball player image Amino tomoo.jpg caption position Guard basketball Guard Forward basketball Forward name Tomoo Amino nickname height ft 6 height in 5 weight lb team Aisin Seahorses league JBL Super League nationality Japan ese birth date Birth date and age 1980 9 25 mf y birth place Tokyo , Japan highschool college draft Undrafted draft year draft team career start career end Tomoo Amino born September 25, 1980 is a Japan ese professional basketball player. He plays for the Aisin Seahorses of the JBL Super League . Amino also is a member of the Japan national basketball team . He played for the team in the 2006 FIBA World Championship and the FIBA Asia Championship 2007 and FIBA Asia Championship 2009 . ref http china2009.fiba.com pages eng fe 09 fascm player p pid 32635 sid 7038 tid 309 profile.html Player Profile at FIBA.com ref Amino currently plays professionally with the Aisin Seahorses of the JBL Super League . In the current 2009 10 season, Amino entered the month long winter break averaging 4.5 points per game for the Seahorses. ref http www.asia basket.com player.asp?Cntry JPN&PlayerID 19093 Tomoo Amino at asia basket.com ref Despite this, the popular Amino was voted by fans as a starter to the West squad for the 2009 10 JBL Super League All Star game. ref http www.asia basket.com Japan basketball League JBL Pro 2009 2010.asp JBL All Star Game rosters set ref References reflist Persondata Metadata see Wikipedia Persondata . NAME Amino, Tomoo ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH September 25, 1980 PLACE OF BIRTH Tokyo , Japan DATE OF DEATH PLACE OF DEATH DEFAULTSORT Amino, Tomoo Category Japanese basketball players Category 1980 births Category Living people ja ...   more details




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