Showing 521 - 540 results of 693 for search '"Gas Chromatography"', query time: 0.06s Refine Results
  1. 521

    Design and Preparation of Activated Carbon with High Specific Surface Area and Porosity Through an Organic Activator Coupled with CO2 Activation by Yizhong Li, Xiaoqing Yan, Zhi Cui, Jingkang Yuan, Baorong Xu, Guidong Yang

    Published 2025-02-01
    “…By means of thermogravimetric (TG) analysis and simultaneous thermal analysis‐Fourier transform infrared spectroscopy‐gas chromatography/mass spectrometry a suggested activation process and mechanism of the novel organic activators is proposed. …”
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    Article
  2. 522

    Microbiological And Physicochemical Analyses Of Oil Contaminated Soil From Major Motor Mechanic Workshops In Benin City Metropolis,Edo State, Nigeria by FO Ekhaise, J Nkwelle

    Published 2013-05-01
    “…The biodegradation potentials of the hydrocarbon degrading microbial isolates monitored by gas chromatography (GC) showed Pseudomonas sp. and Aspergillus versicolor to have recorded the highest biodegradation potentials among the microbial isolates. …”
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  3. 523

    Fatty Acids of European Sardine (<i>Sardina pilchardus</i>) White Muscle Can Discriminate Geographic Origin Along the Iberian Atlantic Coast by Ricardo Calado, Marcos Palma, Maria Rosário Domingues, Fernando Ricardo, Felisa Rey

    Published 2025-01-01
    “…While 35 FAs were identified using gas chromatography–mass spectrometry in the white muscle of <i>S. pilchardus</i>, the following, as determined by the Boruta algorithm, were key for sample discrimination: 14:0, 22:6<i>n</i>-3, 22:5<i>n</i>-3, 18:0, 20:5<i>n</i>-3, 16:1<i>n</i>-7, 16:0, and 18:1<i>n</i>-7 (in increasing order of relevance). …”
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  4. 524

    Distinct gut microbial signature and altered short chain fatty acid metabolism at disease onset in a rat preclinical model of superimposed preeclampsia by Moumen M. Alhasan, María S. Landa, Silvia I. García, Roman G. Gerlach, Hani Harb, Fabian B. Fahlbusch, Melanie L. Conrad, Gabriela Barrientos

    Published 2024-12-01
    “…On gestation day (GD)14, feces were collected and gut microbiome composition and short-chain fatty acid concentrations were determined by 16S rRNA sequencing and gas chromatography respectively. At disease onset on GD14, the fecal gut microbiome of SHRSP showed a lower alpha diversity and significant differences in beta diversity when compared with control animals. …”
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  5. 525

    Effects of Soursop flowers (Annona muricata L.) extract on chemical changes of refined palm olein stored at frying temperature by Tonfack Djikeng Fabrice, Womeni Hilaire Macaire, Bala Krishna Marrapu, Mallampalli Sri Lakshmi Karuna, Rachapudi Badari Narayana Prasad, Linder Michel

    Published 2017-12-01
    “…Additionally, the evolution of the fatty acid composition of each oil sample during the storage was assessed by gas-chromatography using a flame ionization detector (GC/FID). …”
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  6. 526

    Aroma profile of two commercial truffle species from Yunnan and Sichuan, China: inter- and intraspecific variability and shared key compounds by Bin Lu, Jesús Perez-Moreno, Fengming Zhang, Andrea C. Rinaldi, Fuqiang Yu

    Published 2021-03-01
    “…In this study, volatile organic compounds (VOCs) from fruiting bodies of two Chinese truffles of commercial relevance, Tuber indicum and Tuber pseudohimalayense, were analyzed using headspace solid-phase microextraction (HS-SPME) coupled with gas chromatography-mass spectrometry (GC-MS). We aimed to characterize the aroma profile and determine whether it would be influenced by provenance and stage of maturation. …”
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    Article
  7. 527

    Antioxidant and Antimicrobial Properties of Cactus Pear (Opuntia) Seed Oils by Esther Ramírez-Moreno, Raquel Cariño-Cortés, Nelly del Socorro Cruz-Cansino, Luis Delgado-Olivares, José Alberto Ariza-Ortega, Vanessa Yelina Montañez-Izquierdo, María Manuela Hernández-Herrero, Tomás Filardo-Kerstupp

    Published 2017-01-01
    “…The fatty acid profile was analyzed by gas chromatography-mass spectrometry (GC-MS). Oil from green cactus pear seeds obtained with ethanol and ethyl acetate exhibited higher antioxidant activity (p<0.05) of 323 and 316 μmol TE/20 mg (p < 0.05), respectively, compared to red cactus pear seed oil (≈274 and 247 μmol TE/20 mg with ethyl acetate and ethanol, resp.). …”
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  8. 528

    Widely targeted metabolomics analysis reveals differences in volatile metabolites among four Angelica species by Jiaojiao Ji, Lanlan Zang, Tingting Lu, Cheng Li, Xiaoxu Han, Soo-Rang Lee, Li Wang

    Published 2025-01-01
    “…In this study, widely targeted metabolomics based on gas chromatography-tandem mass spectrometry was employed to analyze the metabolomes of four Angelica species (Angelica sinensis (Oliv.) …”
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  9. 529

    Correlating Microbial Dynamics with Key Metabolomic Profiles in Three Submerged Culture-Produced Vinegars by Juan J. Román-Camacho, Inés M. Santos-Dueñas, Isidoro García-García, Teresa García-Martínez, Rafael A. Peinado, Juan C. Mauricio

    Published 2024-12-01
    “…In this work, three acetification profiles in submerged culture using both synthetic and raw materials from Andalusia (Spain) were characterized by metagenomic (16S rRNA amplicon sequencing) and metabolomic tools (stir-bar sorptive extraction with thermo-desorption coupled to gas chromatography–mass spectrometry (SBSE-TD-GC−MS) and high-performance liquid chromatography (HPLC)). …”
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  10. 530

    Lipid Biomarkers in Urban Soils of the Alluvial Area near Sava River, Belgrade, Serbia by Gordana Dević, Sandra Bulatović, Jelena Avdalović, Nenad Marić, Jelena Milić, Mila Ilić, Tatjana Šolević Knudsen

    Published 2025-01-01
    “…This study focused on the investigation of soil samples from the alluvial zone of the Sava River, located near the heating plant in New Belgrade, Serbia. Using gas chromatography with flame ionization detection (GC-FID), a broad range of alkanes, including linear <i>n</i>-alkanes (C<sub>10</sub> to C<sub>33</sub>) and isoprenoids, was analyzed in all samples. …”
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    Article
  11. 531

    Enhancing the targeted and untargeted analysis of honey by vacuum-assisted SPME-GC × GC-MS. A green, practical, and highly informative approach by Damien Eggermont, Francesca Pardi, Giorgia Purcaro

    Published 2025-03-01
    “…In this work, we explored the use of Vac-HS coupled with comprehensive two-dimensional gas chromatography coupled with mass spectrometry to simultaneously determine 5-hydroxymethylfurfural (a semi-volatile processing marker in honey) and the entire volatile profile, which is recognized as a highly informative fingerprint of the geographical and botanical authenticity of honey. …”
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  12. 532

    In vitro propagation of Codonopsis pilosula (Franch.) Nannf. using apical shoot segments and phytochemical assessments of the maternal and regenerated plants by Roggers, Gang, Richard, Komakech, Yuseong, Chung, Denis, Okello, Wook, Jin Kim, Byeong, Cheol Moon, Nam, Hui Yim, Youngmin, Kang

    Published 2023
    “…Furthermore, the tissues (roots and shoots) of maternal and in vitro‑regenerated C. pilosula plants were subjected to Fourier‑transform near‑infrared (FT‑NIR) spectrometry, Gas chromatography‑mass spectrometry (GC–MS), and their total flavonoids, phenolics, and antioxidant capacity were determined and compared. …”
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  13. 533

    The antibacterial and antifungal potential of marine natural ingredients from the symbiont bacteria of mangrove by D. Pringgenies, W. Ari Setyati, F. Feliatra, D. Ariyanto

    Published 2023-10-01
    “…Further, everal tests were conducted, including the antibacterial test, antifungal test, molecular identification, and gas chromatography-mass spectrometry. The pathogenic bacteria used in the antibacterial test were Staphylococcus aureus, Vibrio harveyi, and Vibrio alginolyticusFINDINGS: The antibacterial test results showed that eight isolates were capable of producing an inhibition zone against S. aureus, seven isolates were positive for antibacterial activity against Vibrio harveyi, and 10 isolates were positive for antibacterial activity against Vibrio alginolyticus. …”
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  14. 534

    Wine, grapes, autochthonous grape varieties, foamy and sparkling properties, yeast, descriptors, phenolic substances, organic acids, aroma, taste by Olga N. Sheludko, https://orcid.org/0000-0001-8655-3375, Larisa E. Chemisova, Roman N. Bakhmetov

    Published 2024-03-01
    “…The highly volatile compounds were determined by gas chromatography. The sensory assessment was conducted by panelists from the Winemaking Research Center of the North-Caucasian Federal Scientific Center of Horticulture, Viticulture, and Winemaking. …”
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    Article
  15. 535

    Corrosion inhibition effects of eco-friendly clarithromycin molecules on aluminium in hydrochloric acid solution via experimental, theoretical and optimization approach by O.D. Onukwuli, I.A. Nnanwube, F.O. Ochili, M. Omotioma, J.I. Obibuenyi

    Published 2025-01-01
    “…Characterization of the inhibitor was executed with gas chromatography mass spectrometry (GC–MS) and Fourier transform infrared (FTIR) spectroscopy, while optimization of the process was executed with response surface methodology (RSM). …”
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    Article
  16. 536

    In Vitro and In Vivo Antifungal Activity of Clove (Eugenia caryophyllata) and Pepper (Piper nigrum L.) Essential Oils and Functional Extracts Against Fusarium oxysporum and Aspergi... by Laila Muñoz Castellanos, Nubia Amaya Olivas, Juan Ayala-Soto, Carmen Miriam De La O Contreras, Miriam Zermeño Ortega, Fabiola Sandoval Salas, Leon Hernández-Ochoa

    Published 2020-01-01
    “…The functional extracts (FEs) of clove and pepper, mixed with ethyl decanoate (FEs-C10), were the best combination for protecting the tomato fruit in vivo against both phytopathogenic fungi. Gas chromatography-mass spectrometry (GC-MS) was used to identify eugenol as the principal compound in clove oil and limonene, sabinene, and β-caryophyllene in pepper oil.…”
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  17. 537

    Investigation of <i>Atraphaxis virgata</i>, an Unexplored Medicinal Plant Rich in Flavonoids, as a Functional Material by Soeun Shin, Seunghee Kim, Jeongho Lee, Hyerim Son, Jin-Hyub Paik, Nadezhda Gennadievna Gemejiyeva, Zhanat Zhumabekovna Karzhaubekova, Taek Lee, Hah Young Yoo

    Published 2025-01-01
    “…In this study, phytochemical compounds of <i>A. virgata</i> extracts were identified using high-performance liquid chromatography (HPLC) and gas chromatography–mass spectrometry (GC-MS) and their antioxidant activity was evaluated. …”
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    Article
  18. 538

    In Vitro Biological and GC-MS Analysis of Whole Plant Calotropis procera by Qahir Shah, Jahangir Khan Achakzai, Muhammad Anwar Panezai, Basira Akhtar, Abdul Manan Kakar, Ali Akbar, Shahabuddin Kakar, Nisar Ahmed Shahwani, Javed Khan, Nazima Yousaf Khan, Ghulam Mustafa Khan, Nizam Baloch, Bakht Zareen Rahim, Noor Hassan

    Published 2024-01-01
    “…MTT assay, antileishmanial bioassay, microplate Alamar Blue assay, agar tube dilution method, oxidative burst assay using chemiluminescence technique, B-hatching techniques, and triple quadrupole acquisition method MS parameters were the methods used for anticancer, antileishmanial, antibacterial, antifungal, anti-inflammatory, brine shrimp lethality assay, and gas chromatography-mass spectrometry. Whole plant methanol extract of Calotropis procera (WMECP) inhibited 69.1% of the growth of HeLa cell line with an IC50 value of 3.1 ± 0.4 and whole plant n-hexane fraction of Calotropis procera (WHFCP) and whole plant and aqueous fraction of Calotropis procera (WAFCP) inhibited the growth by 70.2% and 65.2% with IC50 values of 5.0 ± 0.3 and 17.1 ± 1.0. …”
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  19. 539

    Assessment-Based Optimization of Distillation Parameters by Ludmila N. Krikunova, Elena V. Dubinina, Dmitry A. Sviridov, Svetlana M. Tomgorova

    Published 2023-06-01
    “…The composition and mass concentration of the main volatile components were determined by gas chromatography using a Thermo Trace GC Ultra device (Thermo, USA) with a flame ionization detector. …”
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  20. 540

    Chemical Constituents and Combined Larvicidal Effects of Selected Essential Oils against Anopheles cracens (Diptera: Culicidae) by Jitrawadee Intirach, Anuluck Junkum, Benjawan Tuetun, Wej Choochote, Udom Chaithong, Atchariya Jitpakdi, Doungrat Riyong, Daruna Champakaew, Benjawan Pitasawat

    Published 2012-01-01
    “…Chemical compositions analyzed by gas chromatography coupled to mass spectrometry demonstrated that the main component in the oil derived from P. sarmentosum, F. vulgare, C. longa, M. fragrans, and Z. piperitum was croweacin (71.01%), anethole (63.00%), ar-turmerone (30.19%), safrole (46.60%), and 1,8-cineole (21.27%), respectively. …”
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