[PDF] Top 20 Monitoring of wine aging process by electrospray ionization mass spectrometry
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Monitoring of wine aging process by electrospray ionization mass spectrometry
... intensity of the ions of m/z 193, 445 and (to a lesser extent) m/z 317, which are also observed in the fingerprints, place these samples closer to the ...intensities of m/z 149 and 115 and to the ... See full document
5
J. Braz. Chem. Soc. vol.23 número1
... determination of the dissociation pathways of these main antimalarial drugs should benefit their monitoring by MS techniques in pharmaceutical products and biological fluids and the proper ... See full document
8
Electrospray ionization mass spectrometry applied to study the radical acetylation of amino acids, peptides and proteins
... a process that generated acetyl radicals in a reaction medium buffered with a diacetyl/peroxynitrite ...activity of nucleic acids, proteins and other biomolecules, causing significant oxidative ...and ... See full document
12
Development of nanoinjector devices for electrospray ionization - tandem mass spectrometry (ESI-MSn)
... deposition of the film was controlled by the thickness measurement of a film formed over a control glass plate, placed together with the capillaries and measured by ...deposition of 15 ... See full document
5
Assessment of Adulteration of Cosmetics Based on Vegetable Oils by GC-FID and Lipid Profile Using Direct Infusion Electrospray Ionization Mass Spectrometry (ESI-MS)
... authenticity of vegetable and/or animal oils include: gas chromatography with flame ionization detection (GC-FID), used to determine the fatty acid composition; and direct infusion by ... See full document
9
Measurement of serum estrogen and estrogen metabolites in pre- and postmenopausal women with osteoarthritis using high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry
... most of the interfer- ences caused by impurities, and multiple co-eluting moieties with distinct molecular masses and chemical structures generate characteristic fragments and specific mass spec- ... See full document
8
J. Braz. Chem. Soc. vol.27 número3
... constant of 8.0 Hz. Based on the above mentioned data, the structure of 1 was established as rel-(4bE,6Z,8E,9aS,10S)-1,4-dihydroxy-9a,10-dihydro- ... See full document
5
Detection of SPM-1-Producing Pseudomonas aeruginosa and Class D beta-Lactamase-Producing Acinetobacter baumannii Isolates by Use of Liquid Chromatography-Mass Spectrometry and Matrix-Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry
... performed by incubating fresh bacterial inoculums from Mueller-Hinton agar plates (Oxoid, Basingstoke, United Kingdom) in a buffer-adjusted solution (20 mM Tris-HCl, pH ...tions of ertapenem ...periods ... See full document
4
Application of electron ionization mass spectrometry for mulungu alkaloid analysis.
... APPLICATION OF ELECTRON IONIZATION MASS SPECTROMETRY FOR MULUNGU ALKALOID ANALYSIS. Erythrina verna is a medicinal plant used to calm agitation popularly known as mulungu. We purchased the ... See full document
5
Electrospray ionization mass spectrometry: chemical processes involved in the ion formation from low molecular weight organic compounds.
... A falta de compreensão destas propriedades pode acarretar em dificuldades na interpretação dos espectros, principalmente para estudantes que estão em contato com a técnica pela primeira vez. Nesse sentido, no presente ... See full document
6
Xanthium strumarium L. antimicrobial activity and carboxyatractyloside analysis through electrospray ionization mass spectrometry
... RESUMO: Atividade antimicrobiana e análise de carboxiatractilosideo por espectrometria de massas com ionização por electrospray de Xanthium strumarium L. O objetivo do presente trabalho foi avaliar a atividade ... See full document
5
J. Braz. Chem. Soc. vol.21 número8
... standards of eighteen pesticides were selected: clomazone, tebuconazole, diuron, irgarol, atrazine, simazine, metsulfuron-methyl, quinclorac, 2,4-D, pyrazosulfuron-ethyl, bentazone, pronanil, carbofuran and the ... See full document
10
Assess of catechol-O-methyltransferase soluble isoform by multiple reaction monitoring mass spectrometry
... between mass spectrometers, it is important to optimize each peptide individually to set the best balance of signal to ...stability of the spray and the sensitivity (74, ...input of sample ... See full document
67
Identification of intact high molecular weight glutenin subunits from the wheat proteome using combined liquid chromatography-electrospray ionization mass spectrometry.
... detection of specific protein modifications ...generated by a MALDI source, cannot be detected with high resolution ...potential of top-down approaches, the chromato- graphic separation of ... See full document
10
Einstein (São Paulo) vol.10 número1
... with ionization of several molecules, which are aspirated in a vacuum tube and taken to a detector: the time of flight varies according to the ... See full document
2
J. Bras. Patol. Med. Lab. vol.49 número4
... tests of choice for performing microbiological analysis in most clinical laboratories ...case of fastidious microorganisms (3) , hence the need for faster and ... See full document
4
Novas metodologias de identificação de micro-organismos: MALDI-TOF.
... diagnosis of pathogens is decisive to guarantee adequate therapy in infections: culture methods are precise and sensitive, but rather ...technology: mass spectrometry applied to microbiological ... See full document
2
Aqueous-phase photooxidation of levoglucosan – a mechanistic study using aerosol time-of-flight chemical ionization mass spectrometry (Aerosol ToF-CIMS)
... decay of LG can be explained by several ...oxidation of LG by gas-phase oxidants has been studied in the laboratory (Kessler et ...oxidized by hydroxyl (OH) radicals efficiently, ... See full document
12
Anti-oxidative and proteolytic activities and protein profile of laticifer cells of Cryptostegia grandiflora, Plumeria rubra and Euphorbia tirucalli
... oxidative process involving secondary metabolites in plants and within these specialized ...novo of these enzymes occurs after initiating infection (Svalheim et ...network of enzymatic process ... See full document
12
Evaluation of MALDI-TOF MS in the microbiology laboratory
... acquired by the system but not recognized by the database, it is possible to include its spectra into the individual database (library), but the operator must be responsible for providing or adding accurate ... See full document
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