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  • oxidation
  • The ability to quench singlet oxygen seems to be in relation with the chemical structure of catechin, with the presence of the catechol moiety on ring B and the presence of a hydroxyl group activating the double bond on ring C. Electrochemical experiments show that (+)-catechin oxidation mechanism proceeds in sequential steps, related with the catechol and resorcinol groups and the oxidation is pH-dependent. (wikipedia.org)
  • Annotation described in this paper also reveals evidence for several metabolic pathways that have yet to be observed experimentally, including a sulphur oxidation ( sox FCDYZAXB) gene cluster, Calvin cycle enzymes, and proteins involved in nitrogen fixation in other species (including RubisCo, ribulose-phosphate 3-epimerase, and nif gene families, respectively). (biomedcentral.com)
  • pathway
  • Only has the pathway for BT biodegradation been proposed based on the identification of intermediate molecules (Fig. 3). (kenyon.edu)
  • Two key metabolites of the meta-cleavage pathway, 5-formyl-2-hydroxy-6,6,8,8-tetramethylnona-2,4-dienoic acid and 6,6,8,8-tetramethyl-2-oxonon-4-enoic acid, were detected by LC-ESI-Q-TOF. (ncu.edu.tw)
  • strain
  • The 16S rDNA analysis revealed 99% nucleotide similarity to that of the type strain of R.rhodochrous (Fig. 2) ( 10 ). (kenyon.edu)
  • Initial interest in Dechloromonas aromatica strain RCB arose from its ability to anaerobically degrade benzene. (biomedcentral.com)
  • 9 ] demonstrated that unsaturated biofilms of P. putida strain mt-2 on membranes overlaying iron-deficient solid media either containing dichromate or solid dichromate-coated hematite were able to completely reduce Cr(VI) under both conditions. (biomedcentral.com)
  • oxidative
  • 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)
  • The influence of varying concentrations and ratios of phenol, base and copper on the copper/N-methylimidazole catalysed oxidative coupling of 2,6- dimethylphenol (DMP) has been studied. (worldwidescience.org)
  • gene
  • Examples of recent gene duplication events in signaling as well as dioxygenase clusters are present, indicating selective gene family expansion as a relatively recent event in D. aromatica 's evolutionary history. (biomedcentral.com)
  • metabolites
  • Octylphenol polyethoxylates (OPEOn) are surfactants and prone to be degraded into xenoestrogenic metabolites, such as octylphenol and OPEOn (n=1-2), are estrogenic-like compounds, and persistent to be degraded by bacteria in the environments. (ncu.edu.tw)
  • production
  • This, along with its ability to reduce perchlorate (a teratogenic contaminant introduced into the environment by man) and inquiry into its use in biocells [ 3 ] has led to interest in using this organism for bioremediation and energy production. (biomedcentral.com)
  • type
  • Catechin /ˈkætɪtʃɪn/ is a flavan-3-ol, a type of natural phenol and antioxidant. (wikipedia.org)
  • group
  • Catechin possesses two benzene rings (called the A- and B-rings) and a dihydropyran heterocycle (the C-ring) with a hydroxyl group on carbon 3. (wikipedia.org)