Showing 681 - 700 results of 1,810 for search '"Mass spectrometry"', query time: 0.09s Refine Results
  1. 681

    Effects of Formulation and Baking Process on Acrylamide Formation in Kolompeh, a Traditional Cookie in Iran by Fatemeh Shakeri, Somayeh Shakeri, Sajad Ghasemi, Antonio Dario Troise, Alberto Fiore

    Published 2019-01-01
    “…Along with the measurement of reducing sugars, moisture, and pH, acrylamide was quantified by gas chromatography mass spectrometry (GC-MS). Results indicated that acrylamide content was 1758, 1048, 888, and 560 μg/kg for TSK, TSIK, ISK, and ISIK, respectively, revealing that the kind of thermal treatment in combination with higher concentrations of reducing sugars were the major driver for acrylamide formation. …”
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  2. 682

    GC-MS Analysis of Insecticidal Essential Oil of Aerial Parts of Echinops latifolius Tausch by Xin Chao Liu, Xianghong Hao, Ligang Zhou, Zhi Long Liu

    Published 2013-01-01
    “…Essential oil of E. latifolius aerial parts at flowering stage was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 35 components of the essential oil of E. latifolius aerial parts were identified. …”
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  3. 683

    Rectal glands and tergal glands as sources of volatile pheromones in cucumber fruit fly, Zeugodacus Cucumis by Soo J Park, Jeanneth Pérez, Vivian Mendez, Phillip W Taylor

    Published 2025-01-01
    “…To address the discrepancies, we examined the volatile chemistry of headspace, rectal glands, tergal glands, and cuticles from both sexes using gas chromatography-mass spectrometry (GC-MS). Our analyses confirmed previously identified compounds and also detected several previously unreported compounds. …”
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  4. 684

    An Investigation for Heavy Metals’ Contamination in Farmers’ Fingernails: Case Study in Libya by Aiman M. Bobaker, Intisar Alakili, Elrashied E. Elkhidir, Sukiman B. Sarmani, Zaher Mundher Yaseen

    Published 2022-01-01
    “…Fingernail samples of the participants were collected, treated, and analyzed by inductively coupled plasma mass spectrometry (ICP-MS) for As, Cd, and Pb contents after microwave acid digestion. …”
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    Article
  5. 685

    Transcriptome-wide analysis of alternative RNA splicing events in Epstein-Barr virus-associated gastric carcinomas. by Victoria E S Armero, Marie-Pier Tremblay, Andréa Allaire, Simon Boudreault, Camille Martenon-Brodeur, Cyntia Duval, Mathieu Durand, Elvy Lapointe, Philippe Thibault, Maude Tremblay-Létourneau, Jean-Pierre Perreault, Michelle S Scott, Martin Bisaillon

    Published 2017-01-01
    “…RT-PCR analysis, mass spectrometry, and co-immunoprecipitation studies were also used to experimentally validate and investigate the differential alternative splicing (AS) events that were observed through RNA-seq studies. …”
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    Article
  6. 686

    Current prevalence of Helicobacter pylori infection in patients with dyspepsia treated in Warsaw, Poland by Tadeusz Tacikowski, Sa’eed Bawa, Danuta Gajewska, Joanna Myszkowska-Ryciak, Jacek Bujko, Grażyna Rydzewska

    Published 2017-05-01
    “…They were tested for Hp infection with a urea breath test that uses 13C-enriched urea and isotope ratio mass spectrometry. Results : Hp infection was found in 53 patients (44 women and 9 men), i.e. in 35.8% of the whole study group. …”
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    Article
  7. 687

    Evaluation of Volatile Compounds during the Fermentation Process of Yogurts by Streptococcus thermophilus Based on Odor Activity Value and Heat Map Analysis by Li Zhang, Si Mi, Ruo-bing Liu, Ya-xin Sang, Xiang-hong Wang

    Published 2020-01-01
    “…The volatile composition of yogurt produced by Streptococcus thermophilus fermentation at different time points was investigated by gas chromatography-mass spectrometry combined with simultaneous distillation and extraction. …”
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    Article
  8. 688

    Chitosan-Bidens pilosa Extract-Based Coating with Enhanced Free Radical Scavenging, Antifungal, and Water Barrier Properties: Metabolite Profiling, Film Characterization, and Raspb... by Kwanele A. Nxumalo, Olaniyi A. Fawole

    Published 2023-01-01
    “…Liquid chromatography-mass spectrometry analysis identified 20 metabolites, including phenolic acids (9), organic acids (8), monosaccharides (1), amino acids (1), flavonoids (1), and six unknown polyphenols. …”
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    Article
  9. 689

    Statistical approach to synthesise biogenic silica nanoparticles from rice husk and conjugated with Justicia adhatoda extract as green, slow‐release biocide by Peerzada Gh Jeelani, C Ramalingam

    Published 2021-06-01
    “…The phytochemical investigation of Justicia adhatoda was done by Gas chromatography–mass spectrometry (GC‐MS) spectroscopy. Moreover, compared with the naked biogenic silica nanoparticles, a better thermal stability was determined for the conjugated system of the extracted compounds. …”
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  10. 690

    Método multirresíduo de agrotóxicos em polpa de açaí empregando método QuEChERS modificado e UHPLC-MS/MS by Rafael Bel Prestes da Silva, Luana Floriano, Cleusa Fátima Zanchin, Franciele Fátima Machado, Júlia Antunes de Oliveira, Osmar Damian Prestes, Renato Zanella

    Published 2025-02-01
    “…Considering the possible use of pesticides in this species, this study aimed to develop a comprehensive method for the multiresidue determination of pesticides in açaí pulp, using a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) method with analysis by ultra-high performance liquid chromatography with tandem mass spectrometry (UHPLC-MS/MS). Various parameters of extraction were investigated, and the method was successfully validated. …”
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  11. 691

    EXPLORING INTERNAL STANDARDS AND MATRIX MATCHING FOR LANTHANIDES DETERMINATION IN TEA BY LA-ICP-MS by Ana Caroline Vedovato Rubin, Vinicius Machado Neves, Ana Barbosa Viana, Taynara Bonfim Riquieri, Dirce Pozebon, Valderi Luiz Dressler

    Published 2025-01-01
    “…In this work, it is proposed a laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS) method for Lns determination in tea. …”
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  12. 692

    Identification of Secondary Metabolites in Flammulina velutipes by UPLC-Q-Exactive-Orbitrap MS by Ying Ding, Sitan Chen, Honglin Wang, Shanlei Li, Changyang Ma, Jinmei Wang, Lili Cui

    Published 2021-01-01
    “…In this paper, ultrahigh-performance liquid chromatography tandem hybrid quadrupole-Orbitrap mass spectrometry (UPLC-Q-Exactive-Orbitrap MS) was used to identify the secondary metabolites of F. velutipes. …”
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  13. 693

    Don't die like me: Which proteins are responsible for the selective neuronal vulnerability within the substantia nigra? by Simone Steinbach, Mariana Molina, Lea T Grinberg, Luisa Aring, Annika Guntermann, Katrin Marcus, Helmut Heinsen, Renata E Paraizo Leite, Caroline May

    Published 2024-01-01
    “…Following, their proteome was analyzed by data independent acquisition mass spectrometry. The samples were analysed donor-specifically and not pooled for this purpose. …”
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  14. 694

    Development and Validation of LC-MS/MS for Analyzing Potential Genotoxic Impurities in Pantoprazole Starting Materials by Yuyuan Chen, Song Wu, Qingyun Yang

    Published 2020-01-01
    “…In this study, a sensitive and reliable liquid chromatography-tandem mass spectrometry method was developed and validated for the quantitative analysis of six PGIs in DMBZ according to the guidelines of the International Council for Harmonization (ICH). …”
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  15. 695

    Polyaminated, acetylated and stop codon readthrough of recombinant Francisella tularensis universal stress protein in Escherichia coli. by Benjamin Girardo, Lawrence M Schopfer, Yinshi Yue, Oksana Lockridge, Marilynn A Larson

    Published 2024-01-01
    “…Tryptic peptides of purified rUsp/His6 were subjected to liquid chromatography tandem mass spectrometry (LC-MS/MS) and fragmentation spectra were searched for acetylated lysines and polyaminated glutamines. …”
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  16. 696

    Levels and Profile of Tetrodotoxins in Spawning <i>Cephalothrix mokievskii</i> (Palaeonemertea, Nemertea): Assessing the Potential Toxic Pressure on Marine Ecosystems by Grigorii V. Malykin, Peter V. Velansky, Timur Yu. Magarlamov

    Published 2025-01-01
    “…In the current study, TTXs in mature and post-spawning individuals and in the eggs of <i>C. mokievskii</i> were identified using high-performance liquid chromatography–tandem mass spectrometry. For the first time, the quantity and profile of TTXs that these nemerteans released into the environment during spawning were estimated. …”
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    Article
  17. 697

    The Residues and Risk Assessment of Sulfonamides in Animal Products by Xiao-lei Zuo, Han Ai-yun

    Published 2021-01-01
    “…Totally, 1200 samples of livestock products were collected, and the samples were detected by high-performance liquid chromatography-tandem mass spectrometry. Combined with the data of Chinese residents’ dietary survey in 2015, a nonparametric probability assessment model was constructed to assess the risk of sulfonamides in the livestock and poultry products of Shijiazhuang residents by using the professional risk assessment software @Risk. …”
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  18. 698

    Screening of Aroma Compounds in Commercial Tea (Camellia sinensis) from Indonesia and Testing Their Activity as Antioxidants by Warsito Warsito, M. Fadel Alief, Vina Octavia Azzahra, M. Farid Rahman, Rurini Retnowati

    Published 2024-12-01
    “…The essential oil yields of the three commercial samples were obtained by distillation using a Liken-Nickerson vessel and analyzed by gas chromatography-mass spectrometry (GC-MS), then tested for antioxidant properties by the DPPH method. …”
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    Article
  19. 699

    Pharmacokinetic Comparison of Isoalantolactone and Alantolactone in Rats after Administration Separately by Optimization of an UPLC-MS2 Method by Renjie Xu, Mengyue Wang, Ying Peng, Xiaobo Li

    Published 2014-01-01
    “…In this study, a sensitive and rapid ultraperformance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was developed for determination of the two compounds in rat plasma, separately. …”
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  20. 700

    The Metabolomic Characterization of Different Types of Coronary Atherosclerotic Heart Disease in Male by Yuxuan Fan, Xianglan Quan, Shengquan Liu, Le Yue, Jizong Jiang, Zhiqing Fan

    Published 2022-01-01
    “…In this work, the metabolomic characterization of the male patients with healthy control (n = 42), stable coronary artery disease (n = 60), non-ST-elevation acute coronary syndrome (n = 45), including prepercutaneous corona intervention (n = 14), and postpercutaneous coronary intervention (n = 31) were performed by using ultra-performance liquid chromatography-mass spectrometry (UPLC-MS). The serum samples of patients were analyzed by multivariate statistics. …”
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