Showing 521 - 540 results of 562 for search '"Gas Chromatography"', query time: 0.07s Refine Results
  1. 521

    Phytochemical Profiling, GC-MS Analysis and Antibacterial Activity of Sida acuta leave Extracts Against Helicobacter pylori by Kamoldeen Ajijolakewu, Ayobami Elias Ajadi, S A Ayoola, Sheriffdeen Issa Bale, Taiwo Ayodeji Sorunke, Saheed Abayomi Onifade, Tomisin Oyawoye

    Published 2024-12-01
    “…This research assessed the phytochemical profile, performed Gas Chromatography-Mass Spectrometry (GC-MS) analysis, and evaluated the antibacterial efficacy of Sida acuta extracts against H. pylori.  …”
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    Article
  2. 522

    Chemical analysis of buffalo meat in a self-consumption system in northeastern of Argentina by Gladis Rébak, Gladys Obregón, Diego Gómez, Laura Vázquez-Acosta, Mariano Pino, Julia Obregón, Rosa Molina, Victoria Cantero, Luz Segovia-Espinola

    Published 2023-11-01
    “…The fatty acid profile was also determined, with extraction according to the Folch technique and gas chromatography (GC), identifying saturated (SFA), unsat-urated (UFA): monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acids present in the intramuscular fat. …”
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  3. 523

    Characterization of microbial communities in flavors and fragrances during storage by Yingjie Feng, Tingting Zhang, Jinchu Yang, Wenzhao Liu, Yongfeng Yang, Jihong Huang, Shen Huang, Zongcan Yang, Qianjin Liu, Wenchao Zheng, Qing Zhou, Qing Zhou

    Published 2025-01-01
    “…The pH levels initially rose slightly, followed by a steady decline, which indicates spoilage progression. Gas chromatography–mass spectrometry (GC–MS) analysis revealed significant degradation of key aromatic compounds, such as 5-hydroxymethylfurfural (5-HMF), vanillin, and its derivative ethyl vanillin. …”
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    Article
  4. 524

    Effect of Tremella fuciformis polysaccharide on the stalling and flavor of tteok during storage by Hongxiu Fan, Hongcheng Liu, Wenyi Li, Wenjing Su, Dawei Wang, Shanshan Zhang, Tingting Liu, Yanrong Zhang

    Published 2023-01-01
    “…Electronic nose and gas chromatography-mass spectrum (GC-MS) analysis results showed that the difference in the concentrations of volatile compounds and fatty acids of tteoks at different storage time gradually increased with the advancement of storage period. …”
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    Article
  5. 525

    A 1-Year Sediment Trap Study on the Downward Flux of Polycyclic Aromatic Hydrocarbons by Settling Particulate Matter in Deep Basins of the Aegean and Ionian Seas, Northeastern Medi... by Ester Skylaki, Constantine Parinos, Maria Tsagkaraki, Ioannis Hatzianestis, Anastasia Christidi, Elisavet Skampa, Ioanna Nikolopoulou, Georgia Kambouri, Ioanna Stavrakaki, Dimitris Velaoras, Giorgos Kouvarakis, Maria V. Triantaphyllou, Maria Kanakidou, Nikolaos Mihalopoulos, Alexandra Gogou

    Published 2024-12-01
    “…Sinking particles were collected using sediment traps, and PAH analysis was conducted via gas chromatography-mass spectrometry. PAH fluxes varied significantly, peaking in the north Aegean Sea due to mesotrophic conditions, nutrient-rich riverine and Black Sea water inflows, and maritime anthropogenic inputs. …”
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    Article
  6. 526

    Molecular characterization, chemical profile and biological properties of essential oils from Chamaemelum nobile (L.) flowers of Morocco: in vitro and in silico studies by El-Mehdi El-Assri, El-Mehdi El-Assri, Youssef El-Assri, Rajae El Brahimi, Mohamed El fadili, Asmae Baghouz, Hatem A. Abuelizz, Sara Er-Rahmani, Amal Lahkimi, Abdelhak Bouia

    Published 2025-02-01
    “…Its chemical composition was analyzed using gas chromatography-mass spectrometry (GC-MS). Antioxidant activity was evaluated using the DPPH assay, while antimicrobial properties were assessed via the disk diffusion method to measure inhibition zones against various bacterial and fungal strains. …”
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    Article
  7. 527

    Characterization of Thirty Germplasms of Millet Pepper (<i>Capsicum frutescens</i> L.) in Terms of Fruit Morphology, Capsaicinoids, and Nutritional Components by Ruihao Zhang, Mengjuan Li, Junheng Lv, Pingping Li, Yunrong Mo, Xiang Zhang, Hong Cheng, Qiaoling Deng, Min Gui, Minghua Deng

    Published 2025-01-01
    “…At the same time, high-performance liquid chromatography (HPLC) and gas chromatography (GC) were used to determine the fruit of capsaicin, dihydrocapsaicin, nordihydrocapsaicin, fatty acids, vitamin E (VE), total phenol, total sugar, and total dietary fiber. …”
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    Article
  8. 528

    2-Heptanone Produces Sensorial-Emotional Changes, Depending on Length of Exposure / La 2-heptanona produce cambios sensorio-emocionales, dependiendo del tiempo de exposición by Ana Gloria Gutiérrez-García, Carlos M. Contreras, María Remedios Mendoza-López

    Published 2015-06-01
    “…As exclusion criteria, women with anxiety (based on the State-Trait Anxiety Inventory, Spielberger), mood disorders (based on the Clinical Diagnosis of Depression Questionnaire), and premenstrual dysphoric disorder (based on the Daily Symptoms Report) were not included in the study. Gas chromatography/mass spectrometry indicated that urinary 2-heptanone content was increased approximately two-fold during pre-menstruation compared with the days around ovulation. …”
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  9. 529

    Quantification and identification of microfibers released from textiles during simulated accelerated washing by João Pinto da Costa, Ana Costa, Andréa Marinho, Alcina Pimenta, Ana Paula Fonte, Ana L. Patrício Silva, António José Fernandes, Florinda M. Costa, Damià Barceló, Lúcia H.M.L.M. Santos, Armando Duarte, Teresa Rocha-Santos

    Published 2025-03-01
    “…Furthermore, experimental results showed that special care and attention should be paid when resorting to automated software-based identification of microplastics in environmental matrices, as this may not be as accurate as previously considered, particularly for increasingly used techniques, such as pyrolysis-gas chromatography/mass spectrometry.…”
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  10. 530

    Temporal changes in plasma and milk lipids in response to an esophageal bolus of rumen-protected fish oil in lactating Holstein dairy cows by J.E. Rico, V. Sáinz de la Maza-Escolà, N.D. Senevirathne, P. Deme, N.J. Haughey, R. Gervais, J.W. McFadden

    Published 2025-02-01
    “…Extracted plasma was analyzed for individual FA and phospholipid concentrations using gas chromatography and mass spectrometry. Separated milk fat was analyzed for individual milk FA using gas–liquid chromatography and a flame-ionization detector. …”
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  11. 531
  12. 532

    Efficacy of Moringa oleifera Seed Husk as Adsorptive Agent for Trihalomethanes from a Water Treatment Plant in Southwestern, Nigeria by Aderonke Adetutu Okoya, Olasunkanmi Olalekan Olaiya, Abimbola Bankole Akinyele, Nnenneh Oruada Ochor

    Published 2020-01-01
    “…The physicochemical properties of both the treated and raw surface water were determined using standard methods, and the concentration of THMs was determined from the water treatment plant at different stages of treatment using gas chromatography with flame ionization detector (GC-FID). …”
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  13. 533
  14. 534

    Shramahara Mahakasya, a traditional polyherbal formulation, induces anti-anxiety activity in hippocampal neurons by effectuating SOD2-mediated protection against oxidative stress by Saakshi Saini, Viney Kumar, Swati Haldar, Samrat Chauhan, Pratibha Demiwal, Souvik Ghosh, Sumeet Gupta, Debabrata Sircar, Bidhan Mahajon, Partha Roy

    Published 2025-02-01
    “…Method: In this study, the chemical composition of SM was first identified using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS). …”
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  15. 535

    Physicochemical characterization of biodegradable polymer polyhydroxybutyrate from halophilic bacterium local strain Halomonas elongata by W.O.S. Rizki, E. Ratnaningsih, D.G.T. Andini, S. Komariah, A.T. Simbara, R. Hertadi

    Published 2024-07-01
    “…The effect of incubation time, sodium chloride concentration, nitrogen, and carbon sources were evaluated via gas chromatography to enhance its productivity. The functional groups of isolated polyhydroxybutyrate were analyzed using nuclear magnetic resonance and Fourier transform infrared spectroscopy. …”
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    Article
  16. 536
  17. 537

    Extensive Atrophic Gastritis Increases Intraduodenal Hydrogen Gas by Yoshihisa Urita, Toshiyasu Watanabe, Tadashi Maeda, Tomohiro Arita, Yosuke Sasaki, Takamasa Ishii, Tatsuhiro Yamamoto, Akiro Kugahara, Asuka Nakayama, Makie Nanami, Kaoru Domon, Susumu Ishihara, Hirohito Kato, Kazuo Hike, Norikok Hara, Shuji Watanabe, Kazushige Nakanishi, Motonobu Sugimoto, Kazumasa Miki

    Published 2008-01-01
    “…Intraluminal H2 concentrations were measured by gas chromatography. Results. Intragastric and intraduodenal H2 gas was detected in 566 (87.5%) and 524 (81.0%) patients, respectively. …”
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    Article
  18. 538

    GC/MS Fatty Acid Profile of Marine-Derived Actinomycetes from Extreme Environments: Chemotaxonomic Insights and Biotechnological Potential by Marlene B. Cunha, André F. Jorge, Maria João Nunes, Joana R. Sousa, Maria João Lança, Marco Gomes da Silva, Susana P. Gaudêncio

    Published 2024-12-01
    “…Fatty acid methyl esters (FAMEs) were prepared from the ethyl acetate lipidic extracts of these strains and analyzed by gas chromatography–mass spectrometry (GC/MS), with FA identification performed using the NIST library. …”
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    Article
  19. 539

    In vitro anticancer effects of frankincense and its nanoemulsions for enhanced cancer cell targeting by Rayya A. Al-Balushi, Aiswarya Chaudhuri, Raghuram Kandimalla, Ashanul Haque, Khalaf M. Alenezi, Mohd. Saeed, Mohammad Changez, Thuraya Al Harthy, Mohammed Al Hinaai, Samra Siddiqui, Ashish Kumar Agrawal, Farrukh Aqil, Farrukh Aqil

    Published 2025-02-01
    “…To address these limitations, this study focuses on developing optimized nanoemulsions (NEs) of Frankincense oil (FO) to enhance its therapeutic efficacy.MethodsFrankincense resins were extracted and characterized using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS), identifying key metabolites including isopinocarveol, α-thujene, p-cymene, carvone, germacrene A, and various methyl esters. …”
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  20. 540

    Composition of antifungal volatile organic compounds in Sextonia rubra fruit by molecular networks by Levasseur, Marceau, Santerre, Cyrille, Segret, Juliette, Elie, Nicolas, Genty, Christophe, Estevez, Yannick, Amusant, Nadine, Houël, Emeline, Eparvier, Véronique, Touboul, David

    Published 2023-11-01
    “…Hydrodistillation of its fruit was performed for the first time and the resulting hydrolate was analyzed by headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) together with the dried fruit. …”
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    Article