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  • enzyme
  • Further classification into mono- and dioxygenases in based on whether the enzyme causes transfer of just one atom to the substrate (S) (eq. 1) or whether the whole molecule is incorporated into a single substrate (eq. 2a) or is shared by a pair of substrates (S, S′) (eq. 2b) ( 1, 2 ) 1 . (springer.com)
  • The reactivity with 1,1-diphenyl-2-picryl-hydrazyl (DPPH), a free stable radical, was evaluated to elucidate the rate of possible lipid-derived radical scavenging in the mechanism of the enzyme inhibition. (biomedcentral.com)
  • Since the mechanism of the enzyme inhibition may include reduction of lipidperoxy- or lipidoxy-radicals, the effects of the samples tested on the 12-LOX activity were compared with their abilities to scavenge 1,1-diphenyl-2-picryl-hydrazyl (DPPH), a free stable radical. (biomedcentral.com)
  • molecule
  • OTA is composed of a 7-carboxy-5-chloro-8-hydroxy-3,4-dihydro-3- R -methylisocoumarin (ochratoxin α) moiety and a L- β -phenylalanine molecule, which are linked through the 7‑carboxy group by an amide bond. (mdpi.com)
  • 3-9 Although the reaction with dioxygen is thermodynamically favourable, the electronic configuration of the O 2 molecule creates a strong kinetic barrier that requires activation, which is useful to prevent any spontaneous reaction of O 2 with organic molecules. (rsc.org)
  • There are two chiral centers on the molecule on carbons 2 and 3. (wikipedia.org)
  • oxidative
  • The kinetics of the copper/N-methylimidazole catalysed oxidative coupling reaction with the C-O coupled dimer of 2,6- dimethylphenol (DMP or monomer), viz. (worldwidescience.org)
  • It was found that oxygen in air had little influence on the oxidative polymerization of 2,6- dimethylphenol (DMP) in the aqueous medium, and potassium ferricyanide was only an oxidant during the oxidative polymerization of DMP. (worldwidescience.org)
  • aqueous
  • C6H5OH + H2O2 → C6H4(OH)2 + H2O Previously, it was produced by hydroxylation of salicylaldehyde using hydrogen peroxide, as well as the hydrolysis of 2-substituted phenols, especially 2-chlorophenol, with hot aqueous solutions containing alkali metal hydroxides. (wikipedia.org)
  • The effects of potassium ferricyanide, sodium n-dodecyl sulfate, sodium hydroxide and temperature on the molecular weight and the yield of poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) synthesized in an aqueous medium were studied. (worldwidescience.org)
  • oxygenases
  • Amongst oxygenases, a recurrent metal coordination triad is observed, composed by two histidines (His) and one carboxylic acid, coming either from glutamate (Glu) or aspartate (Asp) moieties. (rsc.org)
  • acid
  • Catechol is the conjugate acid of a chelating agent used widely in coordination chemistry. (wikipedia.org)
  • The conversion of nonhalogenated cinnamic acids to benzoic acids, such as the transformation of ferulic acid to vanillic acid, has been described previously ( 2 , 4 , 20 , 31 , 39 ). (asm.org)
  • oxidation
  • Catalytic oxidation of 3,5-di- t -butyl-catechol (3,5-DTBC) into quinone occurred without the need of an additional base when the metal complex was confined in the porous solid. (rsc.org)
  • In comparision, the oxidation of 4- t -butyl-catechol (4-TBC) that always required a basic media led to a total oxidation into the ortho -quinone, contrary to the molecular analogue. (rsc.org)
  • carbon
  • The Sphingomonas macrogolitabida strain TFA is a gram-negative bacterium that is able to grow on tetralin (1,2,3,4-tetrahydronaphthalene) as the only carbon and energy source ( 14 ). (pubmedcentralcanada.ca)
  • Molecular
  • Molecular structure of ochratoxins naturally produced by filamentous fungi [ 2 , 5 , 6 ]. (mdpi.com)
  • belen.albela@ens-lyon.fr b Instituto de Ciencia Molecular, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain. (rsc.org)
  • produce
  • Cyclic esters are formed upon treatment with phosphorus trichloride and phosphorus oxychloride, carbonyl chloride, and sulphuryl chloride: C6H4(OH)2 + XCl2 → C6H4(O2X) + 2 HCl where X = CO, SO2, PCl, P(O)Cl Catechols produce quinones with the addition of ceric ammonium nitrate (CAN). (wikipedia.org)
  • structure
  • Catecholamines are biochemically significant hormones/neurotransmitters that are phenethylamines in which the phenyl group has a catechol skeleton structure. (wikipedia.org)
  • family
  • It belongs to the group of flavan-3-ols (or simply flavanols), part of the chemical family of flavonoids. (wikipedia.org)
  • High-throughput screening of a ~236,000-member collection of diverse molecules arrayed as dilution series was used to identify inhibitors of the JMJD2 (KDM4) family of 2-oxoglutarate-dependent histone demethylases. (pubmedcentralcanada.ca)
  • further
  • Chalcone is then isomerized to naringenin by chalcone isomerase which is oxidized to eriodictyol by flavonoid 3'- hydroxylase and further oxidized to taxifolin by flavanone 3-hydroxylase. (wikipedia.org)
  • known
  • On an evolutionary scale, they are some of the oldest molecules known, originating in the neighborhood of 3 BY ago. (bris.ac.uk)
  • method
  • 2. The method of claim 1, wherein the phenolic compound component comprises a hydrolysable tannin, a condensed tannin, or a combination thereof. (patentsencyclopedia.com)
  • 3. The method of claim 1, wherein the phenolic compound component comprises a flavanol. (patentsencyclopedia.com)