Showing 561 - 580 results of 1,443 for search '"mass spectrometry"', query time: 0.08s Refine Results
  1. 561

    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
  2. 562

    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
  3. 563

    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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    Article
  4. 564

    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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    Article
  5. 565

    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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  6. 566

    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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    Article
  7. 567

    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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    Article
  8. 568

    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
  9. 569

    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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  10. 570

    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
  11. 571

    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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    Article
  12. 572

    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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    Article
  13. 573

    Enterovirus-like particles encapsidate RNA and exhibit decreased stability due to lack of maturation. by Louis Kuijpers, Evdokia-Anastasia Giannopoulou, Yuzhen Feng, Wouter van den Braak, Abbas Freydoonian, Ramon Ramlal, Hugo Meiring, Belén Solano, Wouter H Roos, Arjen J Jakobi, Leo A van der Pol, Nynke H Dekker

    Published 2025-02-01
    “…Here, we produce VLPs to investigate capsid stability using cryogenic electron microscopy (cryo-EM), mass spectrometry (MS), biochemical assays, and atomic force microscopy (AFM). …”
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    Article
  14. 574

    Nontarget Metabolites of Rhizomes of Edible Sacred Lotus Provide New Insights into Rhizome Browning by Chenyang Hao, Yuetong Yu, Xueting Zhang, Gangqiang Dong, Yan Liu, Sha Chen

    Published 2022-01-01
    “…In this study, 48 target metabolites were untargeted and identified in 212 rhizome cultivars (tropical and temperate types) using ultraperformance liquid chromatography-electrospray ionization quadrupole time-of-flight high-resolution mass spectrometry; among these, 32 compounds were newly reported in the rhizome. …”
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    Article
  15. 575

    Chemical Composition, Antibacterial Test, and Antioxidant Activity of Essential Oils from Fresh and Dried Stropharia rugosoannulata by Lei Wei, Wei Wang, Yueying Hou, Xiaoyang Xie, Xiao Li, Fei Chen, Zhiyao Wang, Yong Zhou, Feifei Li, Bingnian Jing

    Published 2023-01-01
    “…The essential oils were obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS) combined with Kovats retention index. …”
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    Article
  16. 576

    Visualization and spatial mapping of PFAS in the edible storage root of radish by Yuwei Zuo, Weilan Zhang

    Published 2025-11-01
    “…DAN (1,5-diaminonaphthalene) was used as the MALDI matrix, and the mass spectrometry operating conditions were optimized to acquire the best PFAS signals. …”
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    Article
  17. 577

    Chemical analysis of volatile oils in Eucalyptus species by GC mass by Noor Jaafer ALtememmi, Neamat Jameel ALjudy, Labeeb Ahmed ALzubaid

    Published 2025-01-01
    “…Gas chromatography-mass spectrometry (GC-MS) methods were employed for Oils found in the leaves of 20 types of Eucalyptus trees in Baghdad, Iraq. …”
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    Article
  18. 578

    Effect of inoculating mixed starter cultures of Lactobacillus and Staphylococcus on bacterial communities and volatile flavor in fermented sausages by Yuxin Li, Zhixiang Cao, Zhihui Yu, Yingchun Zhu, Kaile Zhao

    Published 2023-01-01
    “…Volatile compounds were identified by gas chromatography–mass spectrometry, and the results were analyzed by principal component analysis (PCA). …”
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    Article
  19. 579

    Characterization of probiotic Bacillus sp. NP5 metabolites and their effect on female catfish broodstock re-maturation by Valensia Enzeline, Widanarni Widanarni, Agus Oman Sudrajat, Alimudin Alimudin

    Published 2025-01-01
    “…NP5. dengan metode liquid chromatography with tandem mass spectrometry LCMS/MS. Selanjutnya dilakukan suplementasi pakan dengan perlakuan probiotik pada konsentrasi 106 CFU/g (P6), 108 CFU/g (P8), dan kontrol (K). …”
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    Article
  20. 580