Showing 861 - 880 results of 1,443 for search '"mass spectrometry"', query time: 0.09s Refine Results
  1. 861

    Comprehensive Characterization of the Odor-Active Compounds in Different Processed Varieties of Yunnan White Tea (<i>Camellia sinensis</i>) by GC×GC-O-MS and Chemometrics by Junaid Raza, Baosong Wang, Yue Duan, Huanlu Song, Ali Raza, Dongfeng Wang

    Published 2025-01-01
    “…The aroma profile of white tea varieties was analyzed using two-dimensional gas chromatography–olfactometry–mass spectrometry (GC×GC-O-MS), electronic nose (e-nose), and descriptive sensory evaluation. …”
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    Article
  2. 862

    Protocol for correlating the gut microbiome and metabolomics in patients with intracranial aneurysms by Hongyu Xu, Zetian Jia, Junhui Liu, Runming Liu, Wei Wei, Xiang Li

    Published 2025-03-01
    “…We then detail procedures for metabolite extraction, liquid chromatography-tandem mass spectrometry (LC-MS/MS) non-targeted metabolomics sequencing, and ELISA for cerebrospinal fluid and plasma samples. …”
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  3. 863

    Label-free proteomic analysis of Duchenne and Becker muscular dystrophy showed decreased sarcomere proteins and increased ubiquitination-related proteins by Juliana Cristina Tobar da Silva, Mariângela Rangel Alves Nogueira, Yara Martins da Silva, Fábio César Sousa Nogueira, Nathalie Henriques Silva Canedo, Katia Carneiro, Denise de Abreu Pereira

    Published 2025-01-01
    “…In this study, skeletal muscle tissue samples from DMD and BMD patients, as well as non-dystrophic controls, were analyzed using label-free mass spectrometry (MS/MS) to characterize the proteomic profile of these conditions and identify biomarkers for differential diagnosis. …”
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    Article
  4. 864

    Analysis of Volatile Compounds in a Value-Added Jerky by Incorporating Ajwain and Thyme Essential Oils by Elaine Anit, Helga Hernández, Jan Banout, Klára Urbanová

    Published 2025-01-01
    “…The identification and quantification of volatile chemicals were performed using headspace solid-phase microextraction and gas chromatography–mass spectrometry. Thymol, γ-terpinene, p-cymene, and β-pinene were the predominant compounds before and after the treatments. …”
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  5. 865

    Higher detectability of amyloid with phenol Congo red compared with alkaline Congo red by Marta Legatowicz-Koprowska, Justyna Szczygieł, Małgorzata Mańczak, Ewa Walczak

    Published 2024-11-01
    “…The PHCR staining specificity should be verified via electron microscopy and/or mass spectrometry.…”
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  6. 866

    Maternal Plasma Metabolomic Profiles in Spontaneous Preterm Birth: Preliminary Results by Barbara Lizewska, Joanna Teul, Pawel Kuc, Adam Lemancewicz, Karol Charkiewicz, Joanna Goscik, Marian Kacerovsky, Ramkumar Menon, Wojciech Miltyk, Piotr Laudanski

    Published 2018-01-01
    “…Plasma samples were analysed using liquid chromatography quadrupole time-of-flight mass spectrometry (LC-Q-TOF-MS) in positive and negative polarity modes. …”
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  7. 867

    Simultaneous Determination of Benzene and Toluene in Pesticide Emulsifiable Concentrate by Headspace GC-MS by Lidong Cao, Hua Jiang, Jing Yang, Li Fan, Fengmin Li, Qiliang Huang

    Published 2013-01-01
    “…In this paper, a simple and efficient headspace-gas chromatography-mass spectrometry (HSGC-MS) method using fluorobenzene as an internal standard (IS) for rapid simultaneous determination of benzene and toluene in pesticide emulsifiable concentrate (EC) was established. …”
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  8. 868

    A Stability-Indicating HPLC-DAD Method for Determination of Stiripentol: Development, Validation, Kinetics, Structure Elucidation and Application to Commercial Dosage Form by Hany W. Darwish, Ali S. Abdelhameed, Mohamed I. Attia, Ahmed H. Bakheit, Nasr Y. Khalil, Abdulrahman A. Al-Majed

    Published 2014-01-01
    “…This degradation product was characterized by 1H-NMR and 13C-NMR spectroscopy as well as ion trap mass spectrometry. The results demonstrated that the method would have a great value when applied in quality control and stability studies for stiripentol.…”
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  9. 869

    Simultaneous Determination of 78 Compounds of Rhodiola rosea Extract by Supercritical CO2-Extraction and HPLC-ESI-MS/MS Spectrometry by Alexander M. Zakharenko, Mayya P. Razgonova, Konstantin S. Pikula, Kirill S. Golokhvast

    Published 2021-01-01
    “…The extracts were analyzed by HPLC with MS/MS identification. 78 target analytes were isolated from Rhodiola rosea (Russia) using a series of column chromatography and mass spectrometry experiments. The results of the analysis showed a spectrum of the main active ingredients Rh. rosea: salidroside, rhodiolosides (B and C), rhodiosin, luteolin, catechin, quercetin, quercitrin, herbacetin, sacranoside A, vimalin, and others. …”
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  10. 870

    Microbial Community, Fatty Acid Composition, and Health Potential of Horse Oil Fermented with Barley Nuruk by Jeong-Ha Lee, Sung-Eun Bae, Ho-Min Kang, Yu-Jin Ha, Chang-Gu Hyun

    Published 2024-12-01
    “…Gas chromatography–tandem mass spectrometry (GC-MS/MS) revealed significant changes in fatty acid composition during fermentation, with oleic acid amide and palmitic acid amide remaining stable and stearic acid amide forming prominently by day 10. …”
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  11. 871

    A multi-tissue longitudinal proteomics study to evaluate the suitability of post-mortem samples for pathophysiological research by Christian M. Beusch, Ken Braesch-Andersen, Ulrika Felldin, Pierre Sabatier, Anna Widgren, Jonas Bergquist, Karl-Henrik Grinnemo, Sergey Rodin

    Published 2025-01-01
    “…Abstract Recent developments in mass spectrometry-based proteomics have established it as a robust tool for system-wide analyses essential for pathophysiological research. …”
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  12. 872

    The volatilome – investigation of volatile organic metabolites (VOM) as potential tumor markers in patients with head and neck squamous cell carcinoma (HNSCC) by Philipp Opitz, Olf Herbarth

    Published 2018-07-01
    “…Methods In this retrospective case-control study urinary VOM of 53 therapy-naive patients with head and neck squamous cell carcinoma (HNSCC) and 82 healthy controls were semi-quantified by headspace solid-phase micro extraction (SPME) gas chromatography (GC) mass spectrometry (MS). At first, the procedure was optimized in respect to the extraction parameters. …”
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  13. 873

    Determination of Crizotinib in Mouse Tissues by LC-MS/MS and Its Application to a Tissue Distribution Study by Fang Zhao, Yuan Wei, Yiming Yan, Han Liu, Sitong Zhou, Bo Ren, Ruijuan Liu

    Published 2020-01-01
    “…In this study, a simple liquid chromatography tandem mass spectrometry method was developed and validated for the determination of crizotinib in various mouse tissues. …”
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  14. 874

    Decoding the aroma of Rosa canina L.: Chemical composition and gene expression. by Parisa Jariani, Ali-Akbar Shahnejat-Bushehri, Roohangiz Naderi, Meisam Zargar, Mohammad Reza Naghavi

    Published 2025-01-01
    “…<h4>Methods</h4>Essential oils (EOs) were extracted from petals at five developmental stages (S1-S5) and analyzed using Gas Chromatography-Mass Spectrometry (GC-MS), identifying 20 distinct compounds. …”
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  15. 875

    A Comparative Phytochemical Investigation of the Greek Members of the Genus <i>Helichrysum</i> Mill., with Emphasis on the Local Endemic <i>Helichrysum amorginum</i> Boiss and Orph by Iordanis Samanidis, Nikos Krigas, Vassilis Athanasiadis, Ioannis Makrygiannis, Martha Mantiniotou, Stavros I. Lalas

    Published 2025-01-01
    “…This study used liquid chromatography coupled with high-resolution mass spectrometry results to present the phytochemical composition of non-volatile secondary metabolites in 11 Greek <i>Helichrysum</i> taxa (species and subspecies). …”
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    Article
  16. 876

    Exploring the Molecular Composition of Dissolved Organic Matter and Its Connection to Microbial Communities in Industrial-Scale Anaerobic Digestion of Chicken Manure by Juan Hu, Yurui Zeng, Aibin Hu, Xiaofeng Wang

    Published 2025-01-01
    “…In this study, the chemical structure of CM digestate-derived DOM was characterized by using multi-spectroscopic techniques and ultrahigh-resolution mass spectrometry, and the microbial composition was detected by using 16S rRNA gene sequencing. …”
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    Article
  17. 877

    Formation and Identification of Unresolved Complex Mixtures in Lacustrine Biodegraded Oil from Nanxiang Basin, China by Pengfei Guo, Sheng He, Shukui Zhu, Derong Chai, Shiyan Yin, Wei Dai, Wanfeng Zhang

    Published 2014-01-01
    “…A comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (GC × GC/TOFMS) method has been developed for the formation and identification of unresolved complex mixtures (UCMs) in lacustrine biodegraded oils that with the same source rock, similar maturity, and increasing degradation rank from Nanxiang Basin, China. …”
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    Article
  18. 878

    Application of Infrared Spectroscopy for Functional Compounds Evaluation in Olive Oil: A Current Snapshot by Sarfaraz Ahmed Mahesar, Massimo Lucarini, Alessandra Durazzo, Antonello Santini, Anja I. Lampe, Johannes Kiefer

    Published 2019-01-01
    “…., based on chromatography and mass spectrometry. Indeed, the present review focuses on the application of infrared spectroscopy for functional compounds evaluation in olive oil.…”
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  19. 879

    Synthesis and Anti-Inflammatory Activity of New Nicotinoyl Amides by O.A. Nurkenov, S.D. Fazylov, Zh.S. Nurmaganbetov, T.M. Seilkhanov, A.Zh. Mendibayeva, S.K. Kabieva, E.M. Satbaeva

    Published 2024-10-01
    “…The structures of the new compounds were determined using NMR 1H and 13C spectroscopy methods, as well as data from two-dimensional spectra of COSY (1H-1H), HMQC (1H-13C), HMBC (1H-13C) and mass spectrometry. The results of an experimental study of the anti-inflammatory activity of synthesized new amides are presented. …”
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    Article
  20. 880

    Effects of different Lys/Met ratios on the antioxidant capacity, tissue morphology, and fatty acid composition of subcutaneous fat in Tibetan sheep on low-protein diets: a lipidomi... by Rengeerli Sa, Fengshuo Zhang, Xianhua Zhang, Wei Gao, Yu Zhang, Jiacheng Gan, Shengzhen Hou, Linsheng Gui

    Published 2025-01-01
    “…Ultra-High Performance Liquid Chromatography–tandem Mass Spectrometry (UHPLC–MS/MS) was employed to explore the changes in various lipid subclasses in subcutaneous adipose tissue. …”
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    Article