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María Del Carmen Martínez-Cuesta et al.
Critical reviews in food science and nutrition, 53(4), 366-385 (2013-01-17)
For economical reasons and to accommodate current market trends, cheese manufacturers and product developers are increasingly interested in controlling cheese flavor formation and developing new flavors. Due to their low detection threshold and diversity, volatile sulfur compounds (VSCs) are of
K Yaegaki et al.
Journal of periodontal research, 27(4 Pt 1), 233-238 (1992-07-01)
Volatile sulfur compounds (VSC) in mouth air were estimated by gas chromatography. The amount of VSC and the methyl mercaptan/hydrogen sulfide ratio were significantly increased in patients with periodontal disease. These two parameters also increased in proportion to the bleeding
JianCai Zhu et al.
Journal of agricultural and food chemistry, 63(34), 7499-7510 (2015-08-11)
The aroma profile of oolong tea infusions (Dongdingwulong, DDWL; Tieguanyin, TGY; Dahongpao, DHP) were investigated in this study. Gas chromatography-olfactometry (GC-O) with the method of aroma intensity (AI) was employed to investigate the aroma-active compounds in tea infusions. The results
Chisato Mori et al.
Special care in dentistry : official publication of the American Association of Hospital Dentists, the Academy of Dentistry for the Handicapped, and the American Society for Geriatric Dentistry, 32(6), 259-264 (2012-10-26)
This study evaluated the effectiveness of professional oral health care (POHC) on patients who were in the subacute stage of neurosurgical disorders. Forty subjects (26 male, 14 female) with acute cerebrovascular disorders or neurotrauma were randomly divided into two groups.
Catarina L Silva et al.
Talanta, 89, 360-368 (2012-01-31)
A sensitive assay to identify volatile organic metabolites (VOMs) as biomarkers that can accurately diagnose the onset of breast cancer using non-invasively collected clinical specimens is ideal for early detection. Therefore the aim of this study was to establish the
Metabolism: Nothing to waste.
Haruyuki Atomi
Nature chemical biology, 8(11), 877-878 (2012-10-19)
Conversion of poisonous methanethiol to hydrogen-rich gas by chemisorption/reforming over nano-scale CeO2: The use of CeO2 as catalyst coating material.
Laosiripojana N
Applied Catalysis. B, Environmental, 102(1-2), 267-275 (2011)
J P Casazza et al.
Alcohol and alcoholism (Oxford, Oxfordshire). Supplement, 1, 607-609 (1987-01-01)
Plasma 1,2-propanediol, D,L,-2,3-butanediol and 2,3-meso-butanediol were measured in 29 patients with biopsy proven alcoholic cirrhosis and 10 control subjects, none of whom had measurable blood alcohol levels. None of these compounds were present in control subjects at level above 5
J Szebeni et al.
Alcoholism, clinical and experimental research, 10(6), 647-650 (1986-12-01)
The level of conjugated dienes (CD) in the serum, conjugated linoleic acid isomer in the phospholipid fraction [18:2(9, 11)], and the fatty acid profile in both the serum and in the separated lipid classes were analyzed in current and previous
David Payne et al.
International dental journal, 61 Suppl 3, 60-66 (2011-11-02)
To assess the ability of a 0.1% w/w o-cymen-5-ol/ 0.6% w/w zinc chloride/ sodium fluoride dentifrice to control oral malodour compared to a sodium fluoride control dentifrice. Following baseline measurement of oral volatile sulfur compounds (VSCs), the subjects brushed twice
G Halperin et al.
Journal of chromatography. B, Biomedical sciences and applications, 742(2), 345-352 (2000-07-20)
We developed a method for the determination of serum 5alpha-cholestan-3beta-ol (cholestanol). The sterols were derivatized to the 4'-bromobenzenesulfonyl esters and heated in isopropanol. The cholesterol-4'-bromobenzenesulfonate was solvolyzed to cholesteryl isopropyl ether, but the derivatized cholestanol did not change and could
D N Bakhmutov et al.
Stomatologiia, 91(1), 13-15 (2012-06-09)
The presence of hydrogen sulfide, methilmercaptane, dimethilsulfide, putrescine, cadaverine in exhaled air was evaluated in the study. The concentrations of the named substances were defined in various oral diseases. The received results are of interest for differential diagnostics of halitosis
N Fani et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 103, 11-17 (2012-12-12)
The molecular mechanism of a Schiff base complex ((E)-((E)-2-(3-((E)-((E)-3(mercapto (methylthio) methylene)cyclopentylidene) amino) propylimino) cyclopentylidene) (methylthio) methanethiol) binding to Human Serum Albumin (HSA) was investigated by fluorescence quenching, absorption spectroscopy, molecular docking and molecular dynamics (MD) simulation procedures. The fluorescence emission
Ronald Bentley et al.
Chemosphere, 55(3), 291-317 (2004-02-28)
Volatile organic sulfur compounds (VOSCs) play a major role in the global sulfur cycle. Two components, dimethyl sulfide (DMS) and methanethiol (MT) are formed in large amounts by living systems (e.g. algae, bacteria, plants), particularly in marine environments. A major
Albert Tangerman
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 877(28), 3366-3377 (2009-06-10)
This review deals with the measurement of the volatile sulfur compounds hydrogen sulfide, methanethiol and dimethyl sulfide in various biological matrices of rats and humans (blood, serum, tissues, urine, breath, feces and flatus). Hydrogen sulfide and methanethiol both contain the
J R Thornton et al.
Gut, 30(10), 1392-1395 (1989-10-01)
Plasma methionine enkephalin is increased in liver disease and may contribute to some of the clinical manifestations of hepatic failure. To determine if another 'small' opioid peptide is increased in the plasma of patients with liver disease, leucine enkephalin was
D N Bakhmutov et al.
Stomatologiia, 91(3), 24-26 (2012-09-13)
The structure of exhaled air at various somatopathies is evaluated in the study. Presence and concentration of hydrogen sulfide, dimethilsulfide, putrescine, cadaverine in patients with otolaryngological, endocrine pathology, diseases of gastrointestinal tract and oral diseases. The obtained data is of
C J McClain et al.
Gut, 21(4), 318-323 (1980-04-01)
Blood methanethiol and ammonia concentrations were measured in 16 healty volunteers, 52 consecutive alcoholic cirrhotics without overt hepatic encephalopathy (HE), and 42 consecutive patients with alcoholic liver disease and overt HE. The mean concentration of blood methanethiol was significantly greater
F M Zuijderhoudt et al.
Clinical chemistry and laboratory medicine, 38(3), 227-230 (2000-07-25)
We studied the accuracy and precision of a HPLC method for determination of porphyrins in urine. A commercial standard solution appeared to contain less porphyrins than indicated by the manufacturer, since calibration resulted in lower concentrations of uroporphyrin and coproporphyrin:
Ari Zeida et al.
Chemical research in toxicology, 25(3), 741-746 (2012-02-07)
The oxidation of cellular thiol-containing compounds, such as glutathione and protein Cys residues, is considered to play an important role in many biological processes. Among possible oxidants, hydrogen peroxide (H(2)O(2)) is known to be produced in many cell types as
Ki-Hyun Kim
Sensors (Basel, Switzerland), 11(2), 1405-1417 (2012-02-10)
To learn more about the effects of mixing different odorants, a series of air dilution sensory (ADS) tests were conducted using four reduced sulfur compounds [RSC: hydrogen sulfide (H(2)S), methanethiol (CH(3)SH), dimethylsulfide (DMS), and dimethyldisulfide (DMDS)] at varying concentration levels.
Toru Takeshita et al.
Scientific reports, 2, 215-215 (2012-02-23)
Both hydrogen sulfide (H2S) and methyl mercaptan (CH(3)SH) are frequently detected in large amounts in malodorous mouth air. We investigated the bacterial composition of saliva of 30 subjects with severe oral malodor exhibiting extreme CH(3)SH/H(2)S ratios (high H(2)S but low
E L Fabbri et al.
Journal of perinatology : official journal of the California Perinatal Association, 12(3), 225-228 (1992-09-01)
The presence of anti-Ro antibody in maternal serum is a serologic marker for increased risk of the development of congenital complete heart block in the fetus. Current etiology and evaluation of these mothers and their fetuses are examined. A case
A Furuhama et al.
SAR and QSAR in environmental research, 23(1-2), 169-184 (2011-12-14)
To understand the key factor for fish toxicity of 11 α,β-unsaturated carbonyl aldehydes and ketones, we used quantum chemical calculations to investigate their Michael reactions with methanethiol or glutathione. We used two reaction schemes, with and without an explicit water
Jared A Wiig et al.
Nature communications, 6, 8034-8034 (2015-08-12)
Carbide insertion plays a pivotal role in the biosynthesis of M-cluster, the cofactor of nitrogenase. Previously, we proposed a carbide insertion pathway involving methyltransfer from SAM to a FeS precursor and hydrogen abstraction from this methyl group that initiates the
A K Batta et al.
Journal of lipid research, 30(12), 1953-1962 (1989-12-01)
We have studied the effect of ursodeoxycholic acid on the serum and urinary bile acids in seven patients with moderate to severe primary biliary cirrhosis. Bile acids were characterized by gas-liquid chromatography-mass spectrometry and quantified by capillary gas-liquid chromatography. Serum
J Sánchez Del Pulgar et al.
Meat science, 95(3), 586-592 (2013-06-26)
The effect of the IGF-II genotype (AG vs. GG) on the morphological and compositional parameters, the fatty acid composition of intramuscular fat, the odour concentration (analysed by dynamic olfactometry) and the volatile compound profile (analysed by proton transfer reaction time-of-flight
Ivan Spasojević et al.
Amino acids, 42(6), 2439-2445 (2011-08-11)
The mechanisms of reaction of methionine with hydroxyl radical are not fully understood. Here, we unequivocally show using electron paramagnetic resonance spin-trapping spectroscopy and GC-FID and GC-MS, the presence of specific carbon-, nitrogen- and sulfur-centered radicals as intermediates of this
N Tamasawa et al.
Lipids, 28(9), 833-836 (1993-09-01)
An analytical method for the determination of cholesterol sulfate (CS) in plasma using gas-liquid chromatography was developed. We measured plasma CS concentrations in patients with liver cirrhosis and hypercholesterolemia as examples of disorders that involve aberrations in cholesterol metabolism. Patients
Manuel Cáceres et al.
Bioresource technology, 118, 243-248 (2012-06-19)
Mixtures of volatile reduced sulphur compounds (VRSCs) like hydrogen sulphide (H(2)S), methylmercaptan (MM), dimethyl sulphide (DMS) and dimethyl disulphide (DMDS) are found in gaseous emissions of several industrial activities creating nuisance in the surroundings. Hydrogen sulphide (H(2)S) decreases the removal
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