Showing 601 - 620 results of 693 for search '"Gas Chromatography"', query time: 0.05s Refine Results
  1. 601

    Occurrence and bioaccumulation of organophosphate flame retardants in high-altitude regions: A comprehensive field survey in Qinghai Province, China by Haibao Zhu, Jinlin Hu, Zheng Ruan, Danhua Liu, Meirong Zhao

    Published 2025-01-01
    “…Herein, a general pretreatment method for OPFRs across various sample matrices was established and combined with gas chromatography-mass spectrometry (GC-MS), utilizing a programmed temperature ramp in the vaporization chamber to enable high-throughput detection of OPFRs in various environmental matrices. …”
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    Article
  2. 602

    HEMPSEED AND COTTONSEED OILS IN THE ACCESSIONS FROM THE VIR COLLECTION AS SOURCES OF FUNCTIONAL FOOD INGREDIENTS by S. V. Grigoryev, T. V. Shelenga, K. V. Illarionova

    Published 2019-10-01
    “…The PUFA profile was measured using gas chromatography with mass spectrometry equipment (Agilent 6850, USA). …”
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    Article
  3. 603

    Comparing the Structural and Physicochemical Properties of Highland Barley <i>β</i>-Glucan from Different Sources: A Focus on Color by Ping Yu, Xuemin Kang, Pengfei Liu, Zhengzong Wu, Yue Cheng, Bo Cui, Wei Gao

    Published 2025-01-01
    “…The molecular weight (M<sub>w</sub>) of BBG, LBG, and WBG were 55.87 kDa, 65.19 kDa, and 81.59 kDa, respectively. 4-Glc(p), 3-Glc(p), and t-Glc(p) accounted for a larger proportion (>90%) of the total methylated residues according to gas chromatography–mass spectrometry (GC-MS) analysis. Additionally, Fourier transform infrared (FT-IR) spectroscopy revealed that the <i>β</i>-linkage of LBG had a greater capacity to develop stronger hydrogen bonds, due to the absence of 3,4-Glc(p). …”
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    Article
  4. 604

    Toxicity Assessment of the Xanthid Crab Demania cultripes from Cebu Island, Philippines by Manabu Asakawa, Gloria Gomez-Delan, Shintaro Tsuruda, Michitaka Shimomura, Yasuo Shida, Shigeto Taniyama, Mercy Barte-Quilantang, Jo Shindo

    Published 2010-01-01
    “…Toxin profiles as determined by high-performance liquid chromatography-fluorescent detection analysis (HPLC-FLD) revealed that TTX was the main toxic principle accounting for about 90% of the total toxicity along with 4-epi TTX and 4,9-anhydroTTX. Furthermore, gas chromatography-mass spectrometry (GC-MS) analysis revealed mass fragment ion peaks at m/z 376, 392 and 407, which were characteristic of the quinazoline skeleton (C9-base) specific to TTX. …”
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    Article
  5. 605

    Skeletal Site-Specific Lipid Profile and Hematopoietic Progenitors of Bone Marrow Adipose Tissue in Patients Undergoing Primary Hip Arthroplasty by Drenka Trivanović, Marko Vujačić, Aleksandra Arsić, Tamara Kukolj, Milica Rajković, Nikola Bogosavljević, Zoran Baščarević, Mirjana Maljković Ružičić, Jovana Kovačević, Aleksandra Jauković

    Published 2025-01-01
    “…BM, BMAT, and gfSAT were explored at the levels of total lipids, fatty acids, and cells by using thin-layerand gas chromatography, ex vivo cellular assays, and flow cytometry. …”
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    Article
  6. 606

    Chemical composition and insecticidal activity of Mentha rotundifolia and Chrysanthemum coronarium essential oils against the tomato leaf miner, Tuta absoluta by Krache Farial, Boualem Malika, Benourad Fouzia, Touzout Nabil, Mihoub Adil, Subhan Danish, Sulaiman Ali Alharbi, Mohammad Javed Ansari, Abdullah A. Alarfaj

    Published 2025-01-01
    “…The chemical composition of EOs obtained by steam distillation from the leaves of the plants was analyzed by gas chromatography coupled with mass spectrometry (GC-MS). …”
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  7. 607

    Comparative Analysis of Chemical Composition and Antibacterial Activity of Essential Oils from Five Varieties of <i>Lavender</i> Extracted via Supercritical Fluid Extraction by Lijing Lin, Zhencheng Lv, Meiyu Wang, Ankang Kan, Songling Zou, Bin Wu, Limin Guo, Salamet Edirs, Jiameng Liu, Lin Zhu

    Published 2025-01-01
    “…This study aimed to determine the chemical composition of five <i>Lavender</i> essential oils (LEOs) using the gas chromatography–mass spectroscopy technique and to assess their antibacterial activity against four marine <i>Vibrio</i> species, including <i>Shewanella algae</i>, <i>Shewanella maridflavi</i>, <i>Vibrio harveyi</i>, and <i>Vibrio alginolyticus</i>. …”
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  8. 608

    Novel Perspectives for Sensory Analysis Applied to Piperaceae and Aromatic Herbs: A Pilot Study by Isabella Taglieri, Alessandro Tonacci, Guido Flamini, Pierina Díaz-Guerrero, Roberta Ascrizzi, Lorenzo Bachi, Giorgia Procissi, Lucia Billeci, Francesca Venturi

    Published 2025-01-01
    “…In this pilot study as a first step, each studied botanical, belonging to Piperaceae or aromatic herbs, has been subjected to headspace solid phase micro-extraction (HS-SPME) coupled with gas-chromatography mass spectrometry (GC-MS) analysis to assess their spontaneous volatile emission, representing the complex chemical pattern, which encounters the consumers’ olfactory perception. …”
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  9. 609

    Saussurea gossypiphora extracts reduce inflammation by reversing inflammatory cytokine levels in in-vitro and in-vivo by Kalyani Jatoth, Pawan Kumar Anoor, Ramesh Kande, Sandeepta Burgula

    Published 2025-02-01
    “…Methods: The antioxidant activities of Methanolic extracts of flowers of Saussurea gossypiphora (MESGD) were examined using 1,1-diphenyl-2-picrylhydrazyl assay. Gas Chromatography Mass Spectrometric investigation revealed the presence of various bio-active constituents. …”
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    Article
  10. 610

    Determination of antioxidant and phytochemical properties of premix extract of brown macroalgae Padinaaustralis, Sargassum licifolium and Stoechospermum marginatum from Chabahar co... by Paria Akbary

    Published 2024-03-01
    “…Sterol was measured by gas chromatography, while phenol, flavonoids and antioxidant activity were measured by spectrophotometer. …”
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    Article
  11. 611
  12. 612

    Comprehensive Evaluation of Quality Characteristics and Processing Suitability of Different Varieties of Large-fruited Sea Buckthorn Juice from Xinjiang Using Multivariate Analysis... by Rong HAN, Yan MA, Yu AO, Ting ZHANG, Xintao MENG, Mingqiang XU, Yan PAN

    Published 2025-02-01
    “…This study assessed the quality characteristics juice and processing suitability of six varieties of large-fruited sea buckthorn juice from Xinjiang using gas chromatography-ion mobility spectroscopy (GC-IMS) and multivariate physicochemical analysis combined with correlation and principal component analysis. …”
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    Article
  13. 613

    Assessment of Volatile Chemical Composition of the Essential Oil of Jatropha ribifolia (Pohl) Baill by HS-SPME-GC-MS Using Different Fibers by Celia Eliane de Lara da Silva, Willian Ferreira da Costa, Sandro Minguzzi, Rogério Cesar de Lara da Silva, Euclésio Simionatto

    Published 2013-01-01
    “…The Clevenger extractor was utilized in hydrodistillation of oil and chemical composition determined by gas chromatography coupled with mass spectrometry detector (GC-MS). …”
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  14. 614

    Optimization of the "Loose Tea Blooming" Process for Guizhou Green Tea and Analysis of Characteristic Volatile Compounds by Linyao SONG, Hui XU, Siyao WU, Fengwei MA, Qiang FEI, Junyi DENG, Dajuan SHI, Yuze LIU, Yichen ZHAO, Xuan DONG, Su XU

    Published 2025-01-01
    “…Concurrently, volatile compounds in both the raw material and the final product were detected using headspace solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS), followed by an analysis of the characteristic volatile compounds. …”
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  15. 615

    Evaluation of Airborne Particulate Matter and Volatile Organic Compounds Released by Three Types of Mosquito Repellents by Soyeon Lee, Jongmin Park, Myoungho Lee, Minjung Kim, Boowook Kim, Kiyoung Lee, Kyungduk Zoh, Chungsik Yoon

    Published 2024-03-01
    “…PM was measured with a scanning mobility particle sizer (SMPS) and optical particle spectrometer (OPS) in an exposure chamber; VOCs were collected with Tenax TA and analyzed by gas chromatography-mass spectrometry. SMPS measurements in the range of 10–420 nm showed that the coil-types had the highest concentration (13,048 particles cm‒3), followed by the mat-types (119 particles cm‒3), and liquid-types (42 particles cm‒3). …”
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  16. 616

    Study on exhaled volatile organic compounds identifying cognitive fatigue induced by N-back task in healthy young adults by Xiaoyu Zhang, Xiaoyan Dong, Qiang Huang, Zhe Liu, Qin Wang

    Published 2025-01-01
    “…Exhaled VOCs were collected and detected using a Bio-VOC sampler and Thermal Desorption Gas Chromatography-Mass Spectroscopy method. The differences in exhaled VOCs between the pre- and post-induction and film watching was evaluated using either the paired t-test or the Wilcoxon signed-rank test. …”
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    Article
  17. 617

    Dynamically Cyclic Fe2+/Fe3+ Active Sites as Electron and Proton-Feeding Centers Boosting CO2 Photoreduction Powered by Benzyl Alcohol Oxidation by Ben Lei, Gaofeng Zhou, Zhongyou Gong, Chao Liu, Ying Zhou, Vitaliy P. Guro, Yanjuan Sun, Jianping Sheng, Fan Dong

    Published 2025-01-01
    “…More importantly, in situ attenuated total reflection Fourier transform infrared spectroscopy and gas chromatography–mass spectrometry spectroscopy, with isotope labeling of Deuteron-benzyl alcohol and 13CO2, confirmed that proton transfer from the hydroxyl group generates reactive protons at the Fe2+/Fe3+ site, enabling efficient CO2 photoreduction through subsequent protonation steps. …”
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    Article
  18. 618

    Metabolite profiling in assessing ulcerative colitis activity: A systematic review by Danyang Cui, Xu Han, Jiazhu Jin, Yanhong Wang, Zijia Chen, Yang Gong, Miao Jiang

    Published 2025-03-01
    “…Qualitative analysis was performed according to the classification of gas chromatography/mass spectrometry, liquid chromatography/mass spectrometry, or nuclear magnetic resonance. …”
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  19. 619

    Classification of Strawberry Maturity Stages and Varieties Using Neural Networks Based on Volatile Organic Compounds by Jing Huang, Xuenan Zhang, Hang Yang, Zhenbiao Li, Zhengfang Xue, Qingqing Wang, Xinyuan Zhang, Shenghua Ding, Zisheng Luo, Yanqun Xu

    Published 2025-01-01
    “…A comprehensive VOC dataset was rapidly collected using gas chromatography-ion mobility spectrometry (GC-IMS) from five strawberry varieties at four maturity stages (n = 300) and visualized through principal component analysis (PCA). …”
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  20. 620

    Widely targeted metabolomics analysis reveals the dynamically changes in volatile metabolites during xiaoqu baijiu fermentation by Zhenbing Ma, Haibo Lan, Dong Zhao, Jingren Wei, Jia Zheng, Jian Su, Shengyuan Xiang, Zhu Luo, Rui Li, Yi Ma, Lijuan Gong

    Published 2025-01-01
    “…In this study, ultra-performance liquid chromatography–tandem mass spectrometry and gas chromatography–tandem mass spectrometry were used to analyze a widely targeted metabolome during the xiaoqu baijiu fermentation process. …”
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    Article