Article
Chemistry, Analytical
Sophia A. Schreckenbach, Denina Simmons, Adam Ladak, Lauren Mullin, Derek C. G. Muir, Myrna J. Simpson, Karl J. Jobst
Summary: This study developed a suspect screening method based on industrial compounds with bioaccumulation potential. Results showed that SQDIA has a significantly lower false-positive rate compared to standard DIA. Through suspect screening and nontargeted screening, multiple pollutants were identified, with some compounds confirmed through standards and structural analysis.
ANALYTICAL CHEMISTRY
(2021)
Review
Medical Laboratory Technology
Kenichi Tamama
Summary: Drugs of abuse testing is commonly used in clinical and forensic settings, with urine being the preferred specimen type but other emerging types include saliva, sweat, hair, and meconium. Liquid chromatography-tandem mass spectrometry (LC-tandem-MS) has become the new gold standard for confirmatory drug testing due to its ability to analyze a wider range of analytes compared to gas chromatography-mass spectrometry (GC-MS). Technical advancements such as high-resolution mass spectrometry and miniature ambient ionization mass spectrometry have improved the speed and efficiency of drugs of abuse testing.
CLINICA CHIMICA ACTA
(2021)
Article
Multidisciplinary Sciences
Cara Olivier, Bianca Allen, Laneke Luies
Summary: This study optimized a urine preparation procedure for non-targeted metabolomics using GC-MS. The direct analysis method showed superior repeatability and higher metabolome coverage compared to the organic acid methods. The findings contribute to the advancement of urine metabolomics research.
SCIENTIFIC REPORTS
(2023)
Article
Food Science & Technology
Liyuan Wang, Zhengyan Hu, Jing Chen, Tianjiao Wang, Pinggu Wu, Ying Ying
Summary: This study developed a method to simultaneously detect a dozen preservatives in pastry using gas chromatography-mass spectrometry. The preservatives showed good linearity within the range of 1.0-50 μg/mL, with detection limits of 0.04-2.00 mg/kg and quantification limits of 0.12-6.67 mg/kg. The method is suitable for the determination of 12 preservatives in pastry.
Review
Chemistry, Analytical
A. Fernez Asensio, E. Alvarez-Gonzalez, A. Rodriguez, L. M. Sierra, E. Blanco-Gonzalez
Summary: Dysregulation of TCA cycle enzymes leads to abnormal accumulation of oncometabolites, which contribute to cancer formation and progression. GC-MS and LC-MS are powerful analytical tools for accurate identification and determination of these metabolites.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Applied
Petar Ristivojevic, Vesna Jovanovic, Dusanka Milojkovic Opsenica, Jihae Park, Judith M. Rollinger, Tanja Cirkovic Velickovic
Summary: A novel high-throughput methodological approach was developed for tracing compounds with radical scavenging and antimicrobial activities in brown seaweeds. Major components identified with these activities include stearidonic, eicosapentaenoic, and arachidonic acids. This method allows fast identification and quantification of bioactive compounds in multicomponent biological samples.
Article
Food Science & Technology
Mark M. Skinner, Jared T. Seale, Maranda S. Cantrell, Joseph M. Collins, Matthew W. Turner, Owen M. McDougal
Summary: This experimental study aimed to detect acrylamide in French fries using methods suitable for the food processing industry, comparing the pros and cons of each method to provide decision-making suggestions for food processors.
Article
Chemistry, Analytical
Armen Shamirian, Christopher Foti, Scott S. Mitchell
Summary: This study developed a sensitive and selective method for simultaneous determination of B(2)Pin(2) and B-2(OH)(4), with B-2(OH)(4) derivatized before analysis by GC-MS and B(2)Pin(2) analyzed without derivatization. The method has low detection and quantitation limits, good recoveries and linear response for analytes at different levels in drug substances.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2021)
Article
Chemistry, Analytical
Ying Zhang, Bei Gao, Luis Valdiviez, Chao Zhu, Tara Gallagher, Katrine Whiteson, Oliver Fiehn
Summary: Stable isotope tracers are commonly used with gas chromatography coupled to mass spectrometry for enzyme activity and metabolic pathway studies. In this research, three commercially available instruments were used to analyze samples from a stable isotope labeling study on Rothia mucilaginosa metabolism. The study found that all three GC-MS instruments can be used for stable isotope tracing studies, with high-resolution GC-QTOF MS offering additional capabilities in identifying the chemical structures of unknown compounds.
ANALYTICAL CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Tsz Hei Fong, Wangpan Shi, Guohui Ruan, Siyi Li, Guanghui Liu, Leyun Yang, Kaibin Wu, Jingxian Fan, Chung Lam Ng, Yafang Hu, Haishan Jiang
Summary: This study retrospectively reviewed medical records and constructed a tuberculostearic acid (TBSA)-combined scoring system based on multiple factors, which showed promising results for predicting and diagnosing tuberculous meningitis (TBM).
Article
Food Science & Technology
Shi Nie, Laihao Li, Yueqi Wang, Yanyan Wu, Chunsheng Li, Shengjun Chen, Yongqiang Zhao, Di Wang, Huan Xiang, Ya Wei
Summary: This study identified and quantified volatile organic compounds (VOCs) in fermented sea bass using gas chromatography-ion mobility mass spectrometry (GC-IMS) and gas chromatography-mass spectrometry (GC-MS). Aldehydes were found to be the principal contributors to the overall flavor of fermented sea bass, and several characteristic VOCs were identified. GC-IMS was demonstrated to rapidly detect VOCs, providing a theoretical basis for studying flavor formation in fermented sea bass.
Article
Chemistry, Multidisciplinary
Kangyi Zhang, Lingling Gao, Can Zhang, Tao Feng, Haining Zhuang
Summary: A rapid and accurate method for detecting volatile components of corn was established using GC-IMS and GC-MS. The fingerprints of corns under different treatments were analyzed, and key flavor compounds were identified. The corns were classified into four categories, consistent with the results of sensory evaluation. Steamed, boiled, and fried corns were found to be more popular.
FRONTIERS IN CHEMISTRY
(2022)
Review
Spectroscopy
Raffaella Pascale, Maria A. Acquavia, Alberto Onzo, Tommaso R. I. Cataldi, Cosima D. Calvano, Giuliana Bianco
Summary: Surfactants are widely used in personal care products, detergents, and industrial applications, requiring sensitive analytical methods for determining their low concentration levels in complex matrices. The introduction of mass spectrometry techniques has significantly expanded research in the field, allowing for the analysis of complex mixtures and degradation products of surfactants at trace levels.
MASS SPECTROMETRY REVIEWS
(2021)
Article
Food Science & Technology
Sha Yan, Xuan Wang, Minghui Sun, Wenqian Wang, Liming Wu, Xiaofeng Xue
Summary: Royal jelly is a popular nutraceutical with unique lipid composition, including phospholipids and trans-10-hydroxy-2-decenoic acid. This study found that the lipid composition of royal jelly is influenced by its botanical origin.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Jackie Jackie, Chun Kiang Chua, Douglas Chiang Yon Chong, Si Ying Lim, Sam Fong Yau Li
Summary: The study demonstrates the capability of Py-GC-MS for direct analysis of endotoxins, with the SS Py-GC-MS method showing superior potential in identifying bacterial endotoxins effectively.
