Showing 481 - 500 results of 693 for search '"Gas Chromatography"', query time: 0.07s Refine Results
  1. 481

    A Low-Cost IoT System Based on the ESP32 Microcontroller for Efficient Monitoring of a Pilot Anaerobic Biogas Reactor by Sotirios D. Kalamaras, Maria-Athina Tsitsimpikou, Christos A. Tzenos, Antonios A. Lithourgidis, Dimitra S. Pitsikoglou, Thomas A. Kotsopoulos

    Published 2024-12-01
    “…Methane concentration variance was less than 6% compared to gas chromatography, while temperature and pH deviations were 0.15% and 1.67%, respectively. …”
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    Article
  2. 482

    Chemical and Physical Properties of Meadowfoam Seed Oil and Extra Virgin Olive Oil: Focus on Vibrational Spectroscopy by Aleksandra Zielińska, Krzysztof Wójcicki, Dorota Klensporf-Pawlik, João Dias-Ferreira, Massimo Lucarini, Alessandra Durazzo, Giuseppe Lucariello, Raffaele Capasso, Antonello Santini, Eliana B. Souto, Izabela Nowak

    Published 2020-01-01
    “…We have also determined the content of fatty acids in both of the oils using gas chromatography, while the use of mid-infrared (MIR) and near-infrared (NIR) spectroscopy allowed us to assign bands corresponding to the vibrations present in the tested functional groups. …”
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  3. 483

    A phytotherapeutic approach to hinder the resistance against clindamycin by MRSA: in vitro and in silico studies by Amal Mayyas, Ali Al-Samydai, Nehaya Al-Karablieh, Waleed A Zalloum, Deniz Al-Tawalbeh, Farah Al-Mamoori, Rula A. Amr, Hamdi Al Nsairat, Simone Carradori, Lidia Kamal Al-Halaseh, Talal Aburjai

    Published 2025-12-01
    “…A synergistic test with clindamycin was performed, and molecular docking studies evaluated the interaction between a key compound (trans-cinnamaldehyde) and MRSA protein.Results EOs from Cinnamomum verum, Rosmarinus officinalis, Salvia officinalis, and Thymus vulgaris demonstrated significant inhibitory and synergistic activities against MRSA, standard strain, and human clinical isolates. Gas Chromatography/Mass Spectroscopy identified trans-cinnamaldehyde, eucalyptol, and thymol as prominent antibacterial compounds. …”
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    Article
  4. 484

    Comparative Oil Composition Study of the Endemic Moroccan Olive (Olea europaea subsp. maroccana) and Wild Olive (var. Sylvestris) in Central West Morocco by Sara Elgadi, Ahmed Ouhammou, Hamza Zine, Nadia Maata, Rachid Ait Babahmad, Abderraouf El Antari

    Published 2021-01-01
    “…The fatty acid and the sterol compositions were analysed using gas chromatography. Additionally, the tocopherol content was determined using high-performance liquid chromatography. …”
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  5. 485

    Association of Fatty Acid Synthase with Level of Fatty Acids in Osteoporosis Patients by Abeer Hassan Alwan, Ekhlass M. Taha

    Published 2025-01-01
    “…Serum samples from postmenopausal women were collected and divided into three groups: 40 patients with OP (G2), 40 patients with osteopenia (G1), and 40 women as the control group. Gas chromatography (GC) to determine the levels of fatty acids (FAs). …”
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  6. 486

    Computational and GC-MS screening of bioactive compounds from Thymus Vulgaris targeting mycolactone protein associated with Buruli ulcer by Muhammad Naveed, Imran Ali, Tariq Aziz, Ayesha Saleem, Zeerwah Rajpoot, Sameera Khaleel, Ayaz Ali Khan, Mitub Al-harbi, Thamer H. Albekairi

    Published 2025-01-01
    “…This work aims to address these challenges by employing computational methods to identify therapeutic candidates from organic compounds, which may be developed into more effective therapies for Buruli ulcer. The Gas-Chromatography Mass Spectrometry (GCMS) analysis of the Thymus Vulgaris identified the 29 bioactive compounds as potential drug candidates having different medicinal properties. …”
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    Article
  7. 487

    Nicotine-free vape liquids containing essential oils of peppermint, lavender, and tangerine: safety and efficacy profiles by Rahmad Aji Prasetya, Djamilah Arifiyana, Zain Budi Syulthoni

    Published 2024-11-01
    “…Thus, this study aimed to examine (1) the safety profile of this nicotine-free liquid vape by observing chemical characteristics using gas chromatography-mass spectrometry (GC-MS) and (2) its efficacy in reducing short-term anxiety in healthy volunteers who had previously used nicotine vape. …”
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  8. 488

    Comparative analysis of fruit quality parameters and volatile compounds in commercially grown citrus cultivars by Polat Yakup, Cimen Berken, Celik Ferit, Ekşi Esra, Koc Gokmen, Ercisli Sezai, Assouguem Amine, Aberkani Kamal, Iqbal Zafar, Mehta Chandra Mohan, Kafkas Nesibe Ebru

    Published 2025-01-01
    “…Volatile compound analysis was conducted using gas chromatography/mass spectrometry with solid-phase micro extraction (SPME) fibres (blue, red, and grey) for both fruit peel and juice. …”
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    Article
  9. 489

    Bioactive Properties of <i>Pentacalia vaccinioides</i> (Kunth) Cuatrec. (Asteraceae) Essential Oils: Evaluation of Antimicrobial and Antioxidant Activities by Luis G. Sequeda-Castañeda, María A. Castellanos-Gómez, Carlos L. A. Céspedes-Acuña

    Published 2025-01-01
    “…The identification and quantification of the compounds present in the EOs were conducted by gas chromatography coupled to mass spectrometry (GC-MS). …”
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  10. 490

    Volatile Profile Characterization of Winter Jujube from Different Regions via HS-SPME-GC/MS and GC-IMS by Yening Qiao, Jinfeng Bi, Qinqin Chen, Xinye Wu, Min Gou, Haonan Hou, Xinwen Jin, Giorgia Purcaro

    Published 2021-01-01
    “…Volatiles, including alcohols, aldehydes, acids, esters, and alkenes, were identified by gas chromatography-ion mobility spectrometry (GC-IMS). Benzyl alcohol, octanoic acid, 2-hexenal, linalool, 2-nonenal, and ethyl decanoate were the most common compounds present in all jujubes. …”
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  11. 491

    Evaluation of volatile safety in children's play mats based on non-targeted screening and risk prioritization by Shuang Liang, Haoyang Shi, Yinhui Yang, Qing Zhang, Zhijuan Wang, Qing Lv

    Published 2025-01-01
    “…In this study, 34 play mats, comprising four materials (3 EPE, 15 XPE, 5 PVC, 11 EVA), were subjected to non-targeted screening based on headspace gas chromatography-Orbitrap high-resolution mass spectrometry (HS-GC-Orbitrap HRMS), which screened out 71 volatile substances. …”
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  12. 492

    Purification and Characterization of a Low Molecular Weight Neutral Non-Starch Polysaccharide from Panax ginsen g by Enzymatic Hydrolysis by Ying Ying, Chao Ma, Yajie Zhang, Xiaoping Li, Hongxin Wu

    Published 2023-02-01
    “…Chemical characteristics, monosaccharide compositions and structure of GP1A were investigated using scanning electron microscopy, gel permeation chromatography, X-ray diffraction, Fourier transform infrared spectroscopy, gas chromatography with mass spectrometer, one-dimensional and two-dimensional nuclear magnetic resonance. …”
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  13. 493

    Analysis of the Pyrolysis Kinetics, Reaction Mechanisms, and By-Products of Rice Husk and Rice Straw via TG-FTIR and Py-GC/MS by Li Lin, Yang E, Qiang Sun, Yixuan Chen, Wanning Dai, Zhengrong Bao, Weisheng Niu, Jun Meng

    Published 2024-12-01
    “…This study employed thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and pyrolysis gas chromatography/mass spectrometry (Py-GC/MS) to characterize and provide insights into the pyrolysis behaviors and by-products of rice husk (RH) and rice straw (RS). …”
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  14. 494

    Effects of pits of different ages on ethyl acetate and its metabolism-related microorganisms during strong-flavor Baijiu fermentation by Jing Zhang, Jing Zhang, Yunxuan Duan, Yang Lin, Jing Chen, Jie Cheng, Jie Cheng, Chuan Song, Jincen Zuo, Suyi Zhang, Suyi Zhang, Yong Zuo

    Published 2025-01-01
    “…In this study, the main esters and their related microorganisms in different years of pits (5, 35 and 100 years) of strong-flavor Baijiu were comprehensively researched by headspace solid-phase microextraction gas chromatography mass spectrometry (HS-SPME-GC-MS) and amplicon sequencing. …”
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    Article
  15. 495

    Analysis and Evaluation of Quality Indicators and Volatile Compounds of Different Rice Cultivars with Geographical Indication by WANG Qin, ZHOU Changyan, ZHAO Xiaoyan, LI Xiaobei, LI Xujiao, JIANG Zhenghui, ZHANG Yanmei

    Published 2025-02-01
    “…Using headspace solid-phase microextraction (HS-SPME) combined with gas chromatography-mass spectrometry (GC-MS) followed by odor activity value (OAV) analysis, the major odor-active compounds of rice were identified as 2-acetyl-1-pyrroline, hexanal, heptanal, octanal, nonanal, trans-2-octenal, hexanol, 1-octen-3-ol, and heptanol. …”
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    Article
  16. 496

    Decoding the effects of brining time on the sensory quality, physicochemical properties and flavor characteristics of marinated grass carp meat by Lu Zhang, Yaqin Yu, Qinhui Wen, Shi Nie, Yang Hu, Chunming Tan, Zongcai Tu

    Published 2025-01-01
    “…E-nose and E-tongue could clearly distinguish different MGC samples, and gas chromatography ion mobility spectrometry (GC-IMS) identified a total of 72 VOCs. …”
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    Article
  17. 497

    Aspilia africana (Pers.) C.D. Adams and Manihot esculenta Crantz Exhibit Antibacterial Activity against Resistant Salmonella typhi Strains by Richard Agyen, Yaw Duah Boakye, Theresa Appiah Agana, Vivian Etsiapa Boamah, Clement Osei Akoto, Michael Owusu, Francis Adu, Christian Agyare

    Published 2024-01-01
    “…There was no significant difference in ZOIs of the different solvent extracts against test organisms at p<0.05. Gas chromatography-mass spectrometry analysis of the extracts showed compounds such as n-hexadecanoic acid, 9,12,15-octadecatrienoic acid (9.55%), and 2H-benzo[F]oxireno[2,3-E]benzofuran-8(9H)-one in the A. …”
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  18. 498

    In Vitro Antibacterial and Antibiofilm Activity of Lippia alba Essential Oil, Citral, and Carvone against Staphylococcus aureus by Emanuela Mesquita Porfírio, Hider Machado Melo, Antônio Matheus Gomes Pereira, Theodora Thays Arruda Cavalcante, Geovany Amorim Gomes, Mário Geraldo de Carvalho, Renata Albuquerque Costa, Francisco Eduardo Aragão Catunda Júnior

    Published 2017-01-01
    “…Essential oils (LA1EO, LA2EO, and LA3EO) were extracted from the aerial parts of three L. alba specimens by hydrodistillation and analyzed by gas chromatography coupled to a mass spectrometer. Minimum Inhibitory Concentrations (MIC) and Minimum Bacterial Concentration (MBC) were determined by the microdilution method. …”
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  19. 499

    A pilot study on the effects of olfactory stimulation with white musk aromatic oil on psychophysiological activity: a crossover study by Fadilla Zennifa, Taisuke Nakashima, Yanli Xu, Saki Koshio, Erika Tomimatsu, Akiko Isa, Katsuya Satake, Fumi Kishida, Kuniyoshi Shimizu

    Published 2025-01-01
    “…Chemical profiling by TDU-GC-MS (thermal desorption gas chromatography/mass spectrometry) was performed to understand the compounds of the aromatic oils presented. …”
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  20. 500

    Evaluation of Skin Irritation and Acute and Subacute Oral Toxicity of Lavandula angustifolia Essential Oils in Rabbit and Mice by Awol Mekonnen, Solomon Tesfaye, Selam G. Christos, Kassahun Dires, Tizazu Zenebe, Nigus Zegeye, Yoseph Shiferaw, Ermias Lulekal

    Published 2019-01-01
    “…L. angustifolia essential oil was analyzed using gas chromatography-mass spectrometry methods and showed predominance of Eucalyptol (52.36%), Camphor (11.91%), gamma-terpinene (8.775%) and endoborneol (7.585%). …”
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