نتایج جستجو برای: resorcinol

تعداد نتایج: 1063  

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2005
Grzegorz Myszkiewicz W Leo Meerts Christian Ratzer Michael Schmitt

The rotationally resolved S1<--S0 electronic origins of several deuterated resorcinol rotamers cooled in a molecular beam have been recorded. An automated assignment of the observed spectra has been performed using a genetic algorithm approach with an asymmetric rotor Hamiltonian. The structures of resorcinol A and resorcinol B were derived from the rotational constants of twenty deuterated spe...

2004
R. W. HEMINGWAY

The reaction of a tannin extract (containing about 30"/0 carbohydrate) from loblolly pine (Pinus taeda L.) bark (two parts) and resorcinol (one part) at 12O"C for 24 h with acetic acid catalyst gave a product containing predominantly oligomeric procyanidin-4-resorcinol adducts (3Wo), unreacted resorcinol (22%). carbohydrate (20010). the resorcinol adduct 2R,3R,4S 4-(2.4-dihydroxyphenyl).fIavan-...

2016
Mahendra Kumar

The stable isotope ratio analysis is widely used in several scientific fields such as agricultural, food authenticity, biochemistry, metabolism, medical research, etc. Resorcinol is one of the most versatile chemicals used for the synthesis of several pharmaceuticals, dyes, polymers, organic compounds, etc. The current research work was designed to investigate the impact of the biofield energy ...

Journal: :Journal of bacteriology 2007
Paula I Darley Jutta A Hellstern Javier I Medina-Bellver Silvia Marqués Bernhard Schink Bodo Philipp

Azoarcus anaerobius, a strictly anaerobic, gram-negative bacterium, utilizes resorcinol as a sole carbon and energy source with nitrate as an electron acceptor. Previously, we showed that resorcinol degradation by this bacterium is initiated by two oxidative steps, both catalyzed by membrane-associated enzymes that lead to the formation of hydroxyhydroquinone (HHQ; 1,2,4-benzenetriol) and 2-hyd...

Journal: :The Biochemical journal 1997
L Agius

Proglycosyn and resorcinol stimulate glycogen synthesis and inhibit glycolysis in hepatocytes. The former effect is attributed to inactivation of phosphorylase mediated by glucuronidated metabolites. This study investigated the mechanism by which resorcinol inhibits glycolysis. Resorcinol (150 microM) inhibited glycolysis in hepatocytes incubated with glucose (15-35 mM) but not with dihydroxyac...

Journal: :Molecules 2009
Ataru Kobayashi Gen-ichi Konishi

Synthesis and characterization of resorcinol-acetone copolymer is described. The polymer was prepared by trifluoroacetic acid-catalyzed polymerization of resorcinol with acetone. According to the (1)H-NMR, (13)C-NMR, and MALDI-TOF Mass spectra data, the obtained polymer had three types of repeating units: isopropylidene bridged-resorcinol, chromane ring, and spiro-shaped double chromane ring, i...

2012
D Rajkumar K Palanivelu N Mohan

This study presents the theory and kinetics of electrochemical dlegradation of resorcinol in the presence of chloride using Tifl'i02 Ru02 Ir02 electrode. The rate constant is affected by chloride concentration, initial resorcinol concentration and current density. The rate of electrochemical oxidation is found to be a pseudo first order kinetic process. The maximum rate of reaction is obtained ...

2012
Nahid Ghasemi Mohammad Goodarzi Morteza Khosravi

Simultaneous determination of multicomponents of phenol, resorcinol and catechol with a chemometric technique a PCranking artificial neural network (PCranking-ANN) algorithm is reported in this study. Based on the data correlation coefficient method, 3 representative PCs are selected from the scores of original UV spectral data (35 PCs) as the original input patterns for ANN to build a neural n...

Journal: :Applied and environmental microbiology 2006
Yan Huang Ke-Xin Zhao Xi-Hui Shen Muhammad Tausif Chaudhry Cheng-Ying Jiang Shuang-Jiang Liu

Corynebacterium glutamicum grew on resorcinol as a sole source of carbon and energy. By genome-wide data mining, two gene clusters, designated NCgl1110-NCgl1113 and NCgl2950-NCgl2953, were proposed to encode putative proteins involved in resorcinol catabolism. Deletion of the NCgl2950-NCgl2953 gene cluster did not result in any observable phenotype changes. Disruption and complementation of eac...

Journal: :Journal of Synthetic Organic Chemistry, Japan 1985

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