Results 21 to 30 of about 440,371 (252)

Determination of 9 halogenated alkanes in toothpaste by GC⁃MS

Shanghai yufang yixue, 2023
ObjectiveTo establish a GC-MS method for the detection of 9 halogenated alkanes in toothpastes.MethodsVarious brands of toothpastes on the market were collected as the samples. Methanol was used as the extraction solution.
PENG Qian, LIN Xi, WU Linying, XUAN Dongliang   +3 more
doaj   +1 more source

Optimising a urinary extraction method for non-targeted GC–MS metabolomics

Scientific Reports, 2023
Urine is ideal for non-targeted metabolomics, providing valuable insights into normal and pathological cellular processes. Optimal extraction is critical since non-targeted metabolomics aims to analyse various compound classes.
Cara Olivier, Bianca Allen, Laneke Luies
doaj   +1 more source

Drying Enhances Signal Intensities for Global GC–MS Metabolomics

Metabolites, 2019
We report here that a straightforward change of the standard derivatization procedure for GC–MS metabolomics is leading to a strong increase in metabolite signal intensity.
Manuel Liebeke, Erik Puskás
doaj   +1 more source

Automated resolution of chromatographic signals by independent component analysis-orthogonal signal deconvolution in comprehensive gas chromatography/mass spectrometry-based metabolomics [PDF]

, 2016
Comprehensive gas chromatography-mass spectrometry (GC x GC-MS) provides a different perspective in metabolomics profiling of samples. However, algorithms for GCx GC-MS data processing are needed in order to automatically process the data and extract the
Brezmes, Jesus, Domingo Almenara, Xavier, Perera Lluna, Alexandre, Ramirez, Noelia   +3 more
core   +2 more sources

Flavor volatiles evolution of Chinese horse bean-chili-paste during ripening, accessed by GC×GC-TOF/MS and GC-MS-olfactometry

International Journal of Food Properties, 2020
The evolution of volatile compounds during the ripening of Chinese horse bean-chili-paste (CHCP) was investigated in this study. GC×GC-TOF/MS allowed an identification of 748 volatiles in three CHCP samples, respectively, ripened for 3 months (M3), 12 ...
Yunhao Lu, Xinyi Tan, Yuanping Lv, Guohua Yang, Yuanlong Chi, Qiang He   +5 more
doaj   +1 more source

Technical Note: Fast two-dimensional GC-MS with thermal extraction for anhydro-sugars in fine aerosols [PDF]

, 2010
A fast two-dimensional gas chromatography (GC-MS) method that uses heart-cutting and thermal extraction (TE) and requires no chemical derivatization was developed for the determination of anhydro-sugars in fine aerosols.
C. D. Geron, J. T. Walker, M. D. Hays, M. J. Gatari Gichuru, Y. Ma   +4 more
core   +1 more source

MOESM4 of Mechanistic insight in the selective delignification of wheat straw by three white-rot fungal species through quantitative 13C-IS py-GCâ MS and whole cell wall HSQC NMR

, 2018
Additional file 4: Figure S1. Residual lignin, glucuronoarabinoxylan (GAX) and glucan (cellulose) in fungal-treated wheat straw during growth (1, 3 and 7Â weeks). Cs Ceriporiopsis subvermispora, Pe Pleurotus eryngii, Le Lentinula edodes. Average and standard deviation of analytical triplicates on pooled biological triplicates.
Erven, Gijs, Nazri Nayan, Sonnenberg, Anton, Hendriks, Wouter, Cone, John, Kabel, Mirjam   +5 more
openaire   +1 more source

Peak Alignment of Gas Chromatography-Mass Spectrometry Data with Deep Learning

, 2019
We present ChromAlignNet, a deep learning model for alignment of peaks in Gas Chromatography-Mass Spectrometry (GC-MS) data. In GC-MS data, a compound's retention time (RT) may not stay fixed across multiple chromatograms. To use GC-MS data for biomarker
Li, Mike, Wang, X. Rosalind
core   +1 more source

Characterization of the key aroma compounds in a novel Qingke baijiu of Tibet by GC-MS, GC×GC-MS and GC-O-MS

Food Chemistry Advances
As a local specialty of Tibet, Qingke baijiu (QB) is made from highland barley, and is referred to as the manufacturing process of light-aroma baijiu. Using highland barley in the Qu-making and the high-temperature stacking process of sauce-aroma baijiu ...
Yahui Zhao, Pengfei Liao, Lu Chen, Yuhong Zhang, Xuliang Wang, Qiao Kang, Xi Chen, Yue Sun, Yulong Jin, Jiajun Yu, Hehe Li, Ning Zhang, Baoguo Sun, Jinyuan Sun   +13 more
doaj   +1 more source

MOESM7 of Mechanistic insight in the selective delignification of wheat straw by three white-rot fungal species through quantitative 13C-IS py-GCâ MS and whole cell wall HSQC NMR

, 2018
Additional file 7: Table S3. Assignments of the lignin 13Câ 1H correlation peaks in the HSQC spectra of control and fungal-treated wheat straw. (t) Tentative assignment.
Erven, Gijs, Nazri Nayan, Sonnenberg, Anton, Hendriks, Wouter, Cone, John, Kabel, Mirjam   +5 more
openaire   +1 more source