The aim of this study was to evaluate the impact of catechol and phenol added to culture media separately and with glucose as an additional, easily-degradable carbon source on fatty acid methyl ester (FAME) composition in Pseudomonas vesicularis. Simultaneously, the degradation rates of aromatic substrates used were investigated in single and binary substrate systems. Both catechol and phenol t...

The presence of organic pollutants in wastewater remains a prominent environmental concern due to the related ecological and health hazards. In response, this study employs an adsorptive methodology address removal phenol catechol, utilizing organo-bentonite material modified with pH-responsive switchable surfactant, dodecyldimethylamine oxide (C12DAO). synthesized (C12DAO-Bt) manifests commend...

Catechol 2, 3-dioxygenase is present in several types of bacteria and undergoes degradation of environmental pollutants through an important key biochemical pathways. Specifically, this enzyme cleaves aromatic rings of several environmental pollutants such as toluene, xylene, naphthalene and biphenyl derivatives. Hence, the importance of Catechol 2, 3-dioxygenase and its role in the degradation...

The electronic properties of the cyclometalated (CwedgeN) complexes of iridium and platinum metals with a catechol ligand have been studied experimentally and computationally. The synthesis and characterization of (p-tolylpyridine)Ir(3,5-di-tert-butylcatechol) (abbreviated Ir-sq) and (2,4-diflorophenylpyridine)Pt(3,5-di-tert-butylcatechol) (abbreviated Pt-sq) are reported along with their struc...

Hydroquinone, a metabolite of benzene, is converted by human myeloperoxidase to 1,4-benzoquinone, a highly toxic species. This conversion is stimulated by phenol, another metabolite of benzene. Here we report that peroxidase-dependent hydroquinone metabolism is also stimulated by catechol, resorcinol, o-cresol, m-cresol, p-cresol, guaiacol, histidine, and imidazole. In order to gain insights in...

Catechol oxidase (EC 1.10.3.1), tyrosinase (EC 1.14.18.1), and laccase (EC 1.10.3.2) are copper-containing metalloenzymes. They oxidise substituted phenols and use molecular oxygen as a terminal electron acceptor. Catechol oxidases and tyrosinases catalyse the oxidation of p-substituted o-diphenols to the corresponding o-quinones. Tyrosinases also catalyse the introduction of a hydroxyl group i...

Abstract The utilization of E. pellita bark as waste is still not widely carried out due to a lack information about the chemical content. Therefore, current study aimed analyze content using pyrolysis-gas chromatography-mass spectrometry (PyGCMS). results showed total extractive pellita’s inner bark, outer and mix-bark was 12.17%, 16.19%, 14.85%, respectively. holocellulose 65.45%, while were ...

A biosensor based on the release of enzyme substrate from its structure was developed for inhibitive detection benzoic acid. polyurethane support comprising two perforated microcapsules (800 ?m in diameter) filled with methylene blue as a model compound and covered conductive deposit multiwalled carbon nanotubes, continuously released this stored dye 24 h. An increase concentration 0.5–0.75 ?mo...

Phenoloxidases (EC.1.14.18.1) are implicated in the immunity of insects toward microorganisms, so oxidative enzymes such as phenoloxidases (PO) from 7th instar larvae red palm weevil; Rhynchophorus ferrugineus (Oliv.) was partially isolated to characterize its activity using catechol a substrate. The mitochondrial fraction larval homogenate used enzyme source for partial kinetic studies.Enzyme ...

This current research shows different analytical techniques used for describing vegetable tannin materials in various plant species grown Sudan. It illustrates the evaluation of content by both hide powder and combined techniques, total phenolic Combined, Folin Denis, Hagerman Butler methods. The result showed that six parts studied; five had over 10% were thus suitable commercial exploitation....