Search Within
Applied Filters:
Palabra clave:'W267104'
Showing 1-28 of 28 resultados for "


" within Papeles
Day-Shin Hsu et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 16(10), 3121-3131 (2010-02-02)
An efficient and short entry to polyfunctionalized linear triquinanes from 2-methoxyphenols is described by utilizing the following chemistry. The Diels-Alder reactions of masked o-benzoquinones, derived from 2-methoxyphenols, with cyclopentadiene afford tricyclo[,6)]undeca-4,10-dien-8-ones. Photochemical oxa-di-pi-methane (ODPM) rearrangements and 1,3-acyl shifts of the...
Organoleptic Characteristics of Flavor Materials
Mosciano, G.
Perfumer & Flavorist, 30, 42-42 (2005)
Alan P Pollnitz et al.
Journal of agricultural and food chemistry, 52(11), 3244-3252 (2004-05-27)
The deuterium-labeled standards [(2)H(3)]-guaiacol and [(2)H(3)]-4-methylguaiacol were synthesized and utilized in a method employing gas chromatography-mass spectrometry to determine the concentration of guaiacol and 4-methylguaiacol in wine or extracts of oak shavings. The method was combined with previously published methods...
Grazyna Bieniek et al.
Journal of occupational health, 53(2), 110-114 (2011-01-20)
This study describes the exposure of coke plant workers to methoxyphenols. The relationship between exposure to methoxyphenols and urinary excretion of metabolites was examined. We determined concentrations of 2-methoxyphenol, 2-methoxy-4-methylphenol and 1-(4-hydroxy-3-methoxyphenyl)ethanone in the breathing-zone air and in the urine...
Peter Bock et al.
Journal of Raman spectroscopy : JRS, 50(6), 778-792 (2019-07-03)
Anatomical and chemical information can be linked by Raman imaging. Behind every pixel of the image is a Raman spectrum, which contains all the information as a molecular fingerprint. Yet to understand the spectra, the bands have to be assigned...
The flavor chemistry of wood smoke.
Maga JA
Food Reviews International, 3(1-2), 139-183 (1987)
Anthea L Fudge et al.
Journal of agricultural and food chemistry, 60(1), 52-59 (2011-12-02)
In this study, the suitability of mid-infrared (MIR) spectroscopy, combined with principal component analysis (PCA) and linear discriminant analysis (LDA), was evaluated as a rapid analytical technique to identify smoke tainted wines. Control (i.e., unsmoked) and smoke-affected wines (260 in...
E Schütte et al.
Klinische Monatsblatter fur Augenheilkunde, 175(4), 539-543 (1979-10-01)
A brief introduction to the pathomechanism of erosions in the eye is followed by a case report of a young soldier injured by a "peptizer" (2-methoxy-4-methylphenol). After early application of cortisone there was no cicatrization impairing function in the central...
Luis J Pérez-Prieto et al.
Journal of agricultural and food chemistry, 51(18), 5444-5449 (2003-08-21)
The extraction rate of furfuryl aldehydes, guaiacol, and 4-methylguaiacol, cis- and trans-oak lactone, and vanillin and the formation rate of furfuryl alcohol and the volatile phenols 4-ethylguaiacol and 4-ethylphenol have been studied in wines matured in different capacity oak barrels...
Robert H H van den Heuvel et al.
The Journal of biological chemistry, 279(32), 33492-33500 (2004-06-01)
The flavoenzyme vanillyl-alcohol oxidase was subjected to random mutagenesis to generate mutants with enhanced reactivity to creosol (2-methoxy-4-methylphenol). The vanillyl-alcohol oxidase-mediated conversion of creosol proceeds via a two-step process in which the initially formed vanillyl alcohol (4-hydroxy-3-methoxybenzyl alcohol) is oxidized...
B Bett et al.
Preventive veterinary medicine, 97(3-4), 220-227 (2010-10-29)
We conducted a field trial among Maasai cattle-keepers in Nkuruman and Nkineji areas of Kenya to evaluate the effectiveness of a synthetic tsetse-repellent technology developed for the control of trypanosomosis in cattle. The technology was a repellent (2-methoxy 4-methylphenol) emitted...
Heather A Meylemans et al.
ChemSusChem, 5(1), 206-210 (2011-12-14)
A series of renewable bisphenols has been synthesized from creosol (2-methoxy-4-methylphenol) through stoichiometric condensation with short-chain aldehydes. Creosol can be readily produced from lignin, potentially allowing for the large scale synthesis of bisphenol A replacements from abundant waste biomass. The...
Grazyna Bieniek
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 795(2), 389-394 (2003-10-03)
A method for the simultaneous determination of 2-methoxyphenol, 2-methoxy-4-methylphenol, 2,6-dimethoxyphenol and 4'-hydroxy-3'-methoxyacetophenone in urine has been described. The metabolites were analyzed after enzymatic hydrolysis and extraction on octyl (C8) cartridges by using gas chromatography with flame ionization detection and a...
N Perron et al.
Chemosphere, 55(1), 45-50 (2004-01-15)
Degradation of phenol and o-, m- and p-cresol at a concentration of 150 mg l(-1) of each compound was studied in a suspended-carrier biofilm process consisting of two aerobic stages. The fungus Mortierella sarnyensis Mil'ko dominated the microflora in the...
Noritaka Nakamichi et al.
Journal of neuroscience research, 88(11), 2483-2493 (2010-07-14)
In our previous studies, particular phenolic ingredients, such as 2-methoxy-4-methylphenol (2M4MP), of the antidiarrheic drug wood creosote significantly prevented cell death by both hydrogen peroxide and glutamate in cultured rat hippocampal neurons. In this study, we further evaluated the pharmacological...
Stir bar sorptive extraction for the determination of volatile compounds in oak-aged wines.
Marin J, et al.
Journal of Chromatography A, 1098(1), 1-6 (2005)
Takashi Hosoya et al.
Carbohydrate research, 341(13), 2293-2297 (2006-07-21)
Thermal degradation of levoglucosan (1,6-anhydro-beta-D-glucopyranose) was shown to be substantially suppressed in the presence of some aromatic compounds under the conditions of N2/240-340 degrees C/15 min. This stabilization effect is also discussed with CH-pi interaction between levoglucosan and pi-electrons in...
N Ogata et al.
Research communications in molecular pathology and pharmacology, 107(1-2), 167-173 (2001-05-04)
Wood creosote, primarily a mixture of simple alkyl- and/or alkoxy-substituted phenolic compounds with closely related structures, has long been used as an oral antidiarrheal agent. The use of wood creosote as a parenteral antidiarrheal agent was investigated, and for basic...
N Ogata et al.
Pharmacology, 51(3), 195-204 (1995-09-01)
Wood creosote, principally a mixture of non-, alkyl- and/or alkoxy-substituted phenolic compounds, was orally administered to adult male volunteers to determine its metabolites and pharmacokinetic parameters. After a 133-mg single dose, its major constituents (i.e. phenol 15 mg, guaiacol 32...
G Bieniek
International archives of occupational and environmental health, 70(5), 334-340 (1997-01-01)
In the present study the relationship between the level of exposure to o-cresol and of 2,4- +2,5-, 3,4-, and 3,5-xylenols and the urinary excretion of their metabolites was examined. The mixed exposure to phenolic derivatives of exposed workers during their...
Ana-Lilia González-Yebra et al.
International archives of occupational and environmental health, 79(3), 259-264 (2005-07-08)
An important, although, unprecise number of shoe workers in Leon, Mexico, are in continuous contact with toluene-based glues. The induction of renal glomerular and/or tubular lesions as a result of toluene exposure is still being discussed controversially. Our objective was...
A Boersch et al.
Biochemical pharmacology, 41(12), 1863-1869 (1991-06-15)
The oxidation of capsaicin (8-methyl-N-vanillyl-6-nonenamide) has been investigated by means of electrochemical, enzymic and chemical procedures. Capsaicin appears to form a fluorescent dimer comparable with those known to be formed from some other compounds bearing the vanillyl(4-hydroxy-3-methoxybenzyl-) group. If such...
Nobuaki Moriguchi et al.
Biochemical pharmacology, 73(3), 385-393 (2006-11-03)
In the present study, we have attempted to evaluate the pharmacological actions of three major phenolic antidiarrheic ingredients, including 2-methoxyphenol (2MP), 2-methoxy-4-methylphenol (2M4MP) and 2-methoxy-4-ethyphenol (2M4EP), on the functionality and integrity of bone by in vitro and in vivo experimental...
N Ogata et al.
Research communications in chemical pathology and pharmacology, 77(3), 359-366 (1992-09-01)
Wood creosote, a mixture of guaiacol, creosol, and other related phenolic compounds, suppresses the spontaneous longitudinal phasic contractions of an isolated rat ileal segment. Thirty-two phenolic compounds were screened for this activity to identify the active substances in wood creosote....
Fabien Merckel et al.
Toxicology letters, 218(3), 266-272 (2013-03-05)
In chemico methods, based on the assessment of a hapten's reactivity toward peptides, have been proposed as alternative methods for the assessment of the skin sensitizing potential of chemicals. However, even with these approaches showing promise, a major drawback is...
Nobuyuki Matsushima et al.
European journal of pharmacology, 567(1-2), 59-66 (2007-05-04)
We have previously shown that particular phenolic antidiarrheic ingredients, including 2-methoxy-4-methylphenol (2M4MP) and 2-methoxy-4-ethyphenol (2M4EP), but not 2-methoxyphenol (2MP), significantly inhibit cellular maturation and differentiation of the bone-resorbing osteoclasts with concomitant protection of the bone-forming osteoblasts against oxidative stress by...
J Sakurada et al.
The Journal of biological chemistry, 261(21), 9657-9662 (1986-07-25)
The geometry of hydrogen donor molecules bound to horseradish peroxidase was investigated using nuclear magnetic resonance techniques. Between resorcinol and 2-methoxy-4-methylphenol which showed different optical difference spectra, little difference was observed in the orientation of the molecules bound to horseradish...
Michael D Sharp et al.
Journal of food science, 77(3), C284-C292 (2012-03-06)
Vanilla beans have been shown to contain over 200 compounds, which can vary in concentration depending on the region where the beans are harvested. Several compounds including vanillin, p-hydroxybenzaldehyde, guaiacol, and anise alcohol have been found to be important for...
Página 1 de 1
Página 1 de 1