Showing 281 - 300 results of 693 for search '"Gas Chromatography"', query time: 0.06s Refine Results
  1. 281

    Effect of inoculating mixed starter cultures of Lactobacillus and Staphylococcus on bacterial communities and volatile flavor in fermented sausages by Yuxin Li, Zhixiang Cao, Zhihui Yu, Yingchun Zhu, Kaile Zhao

    Published 2023-01-01
    “…Volatile compounds were identified by gas chromatography–mass spectrometry, and the results were analyzed by principal component analysis (PCA). …”
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    Article
  2. 282

    Using a Micro Sampler on a Drone to Extract Organic Vapors—A Case Study of Monitoring Industrial Pollution by Wen-Hsi Cheng, Chung-Shin Yuan

    Published 2020-11-01
    “…The mainly emitted compounds, including aromatic hydrocarbons (toluene of 1,450 ± 650 ppb, ethylbenzene of 34 ± 12 ppb and xylenes of 51 ± 25 ppb), formaldehyde (50 ± 12 ppb), alkanes (propane of 30 ± 10 ppb), triacetin (7,620 ± 1600 ppb) and terephthalic acid (20 ± 5 ppb) were collected and then identified by the off-line gas chromatography (GC)-mass spectroscopy (MS) system in the laboratory. …”
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  3. 283

    GC-MS Analysis and Study of the Antimicrobial Activity of Citrus paradisi, Citrus aurantifolia, and Citrus sinensis Peel Essential Oils as Hand Sanitizer by Isra Osman Mohammed, Ayat Ahmed Alrasheid, Saad Mohammed Hussein Ayoub

    Published 2024-01-01
    “…The qualitative and quantitative analysis of the hydrodistillated essential oils of peels of grapefruit (Citrus paradisi), lime (Citrus aurantifolia), and orange (Citrus sinensis) were carried out using gas chromatography mass spectroscopy. The disc diffusion method was used to screen the antibacterial activity of the essential oils against Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Staphylococcus aureus, and Candida albicans compared with a 78% alcohol-based commercial hand sanitizer. …”
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    Article
  4. 284

    Chemical constituents and antibacterial activity of essential oils in <i>Amomum longiligulare</i> from Vietnam by N. Hung, N. H. Toan

    Published 2022-10-01
    “…The essential oils were analyzed by gas chromatography–mass spectrometry techniques. The minimum inhibitory concentration (MIC) values were measured by the broth microdilution assay. …”
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    Article
  5. 285

    Development of a Methodology for the Determination of Pesticide Residues in Cajá-Manga Pulp (Spondias dulcis L.) Using Solid-Liquid Extraction with Low-Temperature Partitioning by Escarlet T. D. Santana, Dayane F. Soares, Anizio M. Faria

    Published 2018-01-01
    “…The quantification was performed by gas chromatography with flame ionization detection which, although it does not present the best detectability for the compounds, is a lower cost instrumentation and is available in several analysis laboratories in Brazil, making the method more accessible to evaluate the pesticide residues in fruit pulp. …”
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    Article
  6. 286

    Antibacterial and Anticancer Potentials of Presynthesized Photosensitive Plectranthus cylindraceus Oil/TiO2/Polyethylene Glycol Polymeric Bionanocomposite by Musarat Amina, Nawal M. Al Musayeib, Nawal A. Alarfaj, Maha F. El-Tohamy, Gadah A. Al-Hamoud

    Published 2021-01-01
    “…The active components of P. cylindraceus oil were verified using gas chromatography coupled with mass spectrometry (GC-MS). …”
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    Article
  7. 287

    Chemical profiling, antioxidant, and antimicrobial activities of the essential oil of Matricaria recutita (Chamomile) by Ram Prasad Baral, Rameshwar Adhikari, Achyut Adhikari

    Published 2025-01-01
    “…This research focuses on extracting essential oil through hydro-distillation, followed by Gas Chromatography-Mass Spectroscopy (GC-MS) to identify its chemical constituents and antioxidant and antimicrobial activities against bacteria and fungi responsible for common skin infections. …”
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    Article
  8. 288

    Comprehensive Studies on Detection of Palm Oil Adulteration in Clarified Milk Fat (Ghee) by Akshay Ramani, Tanmay Hazra, Ayon Tarafdar, Ranjna Sirohi, Anamika Das, Swarnima Dey, Yogesh Kumar

    Published 2025-01-01
    “…In chromatographic analytical approaches, triglyceride analysis (S-value) was carried out using gas chromatography with flame ionization detection (GC-FID), and plant sterol detection was done by HPLC, which proved to be the robust method for ascertaining the presence of palm oil in milk fat (ghee) at 5%. …”
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    Article
  9. 289

    Analysis of Volatile Components in Tremella fuciformis by Electronic Nose Combined with GC-MS by Lijun Fu, Jing Tian, Li Liu, Yongzheng Ma, Xiumin Zhang, Changyang Ma, Wenyi Kang, Yong Sun

    Published 2022-01-01
    “…In order to quickly evaluate the quality of Tremella fuciformis, the volatile components of T. fuciformis from 4 provinces in China, including Hebei, Henan, Fujian, and Sichuan, were analyzed by electronic nose combined with gas chromatography-mass spectrometry (GC-MS), and the key aroma compounds were determined by relative odor activity value (ROAV). …”
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    Article
  10. 290

    Comparative study of traditional and lab-scale roasting method for unpeeled robusta coffee in Bromo-Tengger-Semeru mountain slope regions by Kiki Fibrianto, Onky Audika Ferrasta, Igoy Arya Bimo

    Published 2024-12-01
    “…Interestingly, the coffee from Wonorejo, which initially had a lower sensory score, reached a comparable quality level when roasted under controlled lab-scale conditions. Gas chromatography-mass spectrometry (GC-MS) analysis further confirmed that lab-scale roasting enhanced sweet flavor notes compared to traditional farmer practices in Wonorejo.…”
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    Article
  11. 291

    Detection of Dissolved Carbon Monoxide in Transformer Oil Using 1.567 μm Diode Laser-Based Photoacoustic Spectroscopy by Qu Zhou, Chao Tang, Shiping Zhu, Weigen Chen, Xiaojuan Peng

    Published 2015-01-01
    “…And a comparative research about the gas detection performances performed by the PAS system and gas chromatography (GC) measurement was presented. All results lay a solid foundation for exploring a portable and tunable CO gas PAS detection device for practical application in future.…”
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    Article
  12. 292

    Effect of plasma free fatty acids on lung function in male COPD patients by Rostam Yazdani, Hossein Fallah, Shirin Yazdani, Beydolah Shahouzehi, Behnaz Danesh

    Published 2025-01-01
    “…Biochemical plasma parameters were measured by Autoanalyzer, Malondialdehyde by TBA, total antioxidant capacity via FRAP method and the concentration of free fatty acids were measured by gas chromatography. Then the relationship between the data and the spirometric findings of the patients was determined. …”
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    Article
  13. 293

    Decolorization and Bioelectricity Generation from Palm Oil Mill Effluent by a Photosynthetic Bacterial Consortium by Pimprapa Chaijak, Alisa Kongthong

    Published 2025-01-01
    “…The degraded metabolites were analyzed by gas chromatography-mass spectrometry (GC-MS) after treatment. …”
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  14. 294
  15. 295

    Diagnosis of Methyl Malonicaciduria from 2013 to 2018 by Alina Concepción Álvarez, Ivette Camayd Viera, Norma Elena de León Ojeda, Alina García García, Laritza Martínez Rey, Daniel Quintana Hernández

    Published 2020-02-01
    “…The identification of methylmalonic acid was performed by gas chromatography / mass spectrometry, while the homocysteine quantification by high performance liquid chromatography. …”
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    Article
  16. 296

    Characteristics and microscopic mechanisms of smoke emissions of OMMT/SBS-modified asphalt by Wanhong Yang, Zhenghao Zhang, Xiaolong Yang, Xiaofan Jia, Yixin Jiang

    Published 2025-01-01
    “…The smoke suppression performance of asphalt can be substantially improved using organic nano-montmorillonite (OMMT)/styrene–butadiene–styrene (SBS) block modifiers. Pyrolysis gas chromatography–mass spectrometry (PY-GC–MS), fluorescence microscopy (FM), thermogravimetric analysis (TG), and gel permeation chromatography (GPC) were used to explore the characteristics and microscopic mechanisms of flue gas emissions. …”
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    Article
  17. 297

    Field Dissipation and Storage Stability of Glufosinate Ammonium and Its Metabolites in Soil by Yun Zhang, Kai Wang, Junxue Wu, Hongyan Zhang

    Published 2014-01-01
    “…The derivatives were quantified by gas chromatography (GC) using a flame photometric detector (FPD). …”
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  18. 298

    Effect of Several Solvents on the Chemical Compound, Antioxidant Activity, and Cytotoxicity Levels of Acacia decurrens Willd. Gum Extract by Ramadhany Ayu Purnama, Sigit Sunarta, Hilda Ismail

    Published 2022-09-01
    “…The chemical compounds were identified using Gas Chromatography-Mass Spectrometry (GC-MS). The amount of A. decurrens gum extract yield, total phenolic content (TPC), total flavonoid content (TFC), and total flavonols content (TVC) were then analyzed quantitatively. …”
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    Article
  19. 299

    Mechanism of Action of Lacticaseibacillus paracasei HNU502 and Fecal Microbiota Transplantation in Alleviating Antibiotic Side Effects by CHEN Lin, LI Ao, LI Jiahe, ZHANG Zeng, ZHANG Jiachao

    Published 2025-02-01
    “…In this study, the mechanism of action of FMT and the probiotic Lacticaseibacillus paracasei HNU502 in alleviating the side effects of cefotaxime, a common antibiotic, using combination of metagenomics, pathological analysis and gas chromatography. The findings suggested that FMT alleviated antibiotic side effects by restoring the disturbed gut microbiota, while HNU502 worked by reestablishing the balance of the gut microbiota. …”
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    Article
  20. 300

    Correlation of Volatile Compounds and Sensory Attributes of Chinese Traditional Sweet Fermented Flour Pastes Using Hierarchical Cluster Analysis and Partial Least Squares-Discrimin... by Meigui Huang, Yulin Li, Ping Zhan, Ping Liu, Honglei Tian, Jie Fan

    Published 2017-01-01
    “…Ninety-six volatile compounds were detected using solid-phase microextraction gas chromatography mass spectrometry. Hierarchical cluster analysis grouped SFFPs into three clusters according to their concentrations and compositions of volatile components. …”
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    Article