Results 11 to 20 of about 484,060 (339)
Metabolomics Benefits from Orbitrap GC–MS—Comparison of Low- and High-Resolution GC–MS
Metabolites, 2020 The development of improved mass spectrometers and supporting computational tools is expected to enable the rapid annotation of whole metabolomes. Essential for the progress is the identification of strengths and weaknesses of novel instrumentation in ...
Daniel Stettin +2 more
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Analysis of Pectin-derived Monosaccharides from Arabidopsis Using GC–MS
Bio-Protocol, 2023 Pectin is a complex polysaccharide present in the plant cell wall, whose composition is constantly remodelled to adapt to environmental or developmental changes.
Patricia Scholz +3 more
doaj +1 more source
Current Research in Food Science, 2023 Maillard reaction products (MRPs) with roasted/broth flavors were prepared and analyzed for the resulting flavor differences. The identification of volatile compounds in MRPs was carried out by GC-MS and GC × GC-ToF-MS.
An-Ran Zheng +5 more
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4-t-Butylbenzylation of carboxylic acid for GC–MS analysis
SN Applied Sciences, 2020 We report a 4-t-butylbenzyl derivatization for the analysis of carboxylic acids by GC–MS (EI). Carboxylic acids were analyzed as a 4-t-butylbenzyl ester after the derivatization with 4-t-butylbenzyl bromide. On the mass spectra of 4-t-butylbenzyl ester, [
Shinji Tsunoi +5 more
doaj +1 more source
Molecules, 2020 The aroma profile is an important marker for wine quality. Various classes of compounds are responsible for the aroma of wine, and one such class is terpenoids. In the context of this work, a validated gas chromatography−mass spectrometry (GC−
Cody Williams, Astrid Buica
doaj +1 more source
Foods, 2023 The volatiles in coffee play an important part in the overall flavor profile. In this study, GC–TOF/MS and GC×GC–TOF/MS were used to detect the volatile organic compounds (VOCs) in coffee samples of three different brands at three states (bean, powder ...
Xiaolei Fang +8 more
doaj +1 more source
Enzymatic digestion and selective quantification of underivatised [delta]9-tetrahydrocannabinol and cocaine in human hair using gas chromatography-mass spectrometry. [PDF]
, 2012 Gas chromatography-mass spectrometric (GC-MS) methods for drug analysis routinely employ derivatising reagents. The aim of this paper was to develop a method for the analysis of two recreational drugs, delta-9-tetrahydrocannabinol ([delta](9)-THC) and ...
Barker, James +3 more
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Determination of propofol by GC/MS and fast GC/MS-TOF in two cases of poisoning [PDF]
, 2017 Two cases of suspected acute and lethal intoxication caused by propofol were delivered by the judicial authority to the Department of Sciences for Health Promotion and Mother-Child Care in Palermo, Sicily.
Argo A. +8 more
core +1 more source
Phytochemical Assessment on N-hexane Extract and Fractions of Marsilea Crenata Presl. Leaves Through Gc-ms [PDF]
, 2016 Estrogen deficiency causes various health problems in postmenopausal women, including osteoporosis. Phytoestrogen emerged as a potential alternative of estrogen with minimum side effects.
Agil, M. (Mangestuti) +2 more
core +4 more sources
A TGA/FTIR and Mass Spectral Study on the Thermal Degradation of Bisphenol A Polycarbonate [PDF]
, 2004 The thermal degradation of polycarbonate under nitrogen was studied using TGA/FTIR, GC/MS and LC/MS as a function of mass loss. The gases evolved during degradation were inspected by in situ FTIR and then the evolved products were collected and analysed ...
Jang, Bok Nam, Wilkie, Charles A.
core +2 more sources