Showing 221 - 240 results of 562 for search '"Gas Chromatography"', query time: 0.08s Refine Results
  1. 221

    Evaluation of Volatile Compounds during the Fermentation Process of Yogurts by Streptococcus thermophilus Based on Odor Activity Value and Heat Map Analysis by Li Zhang, Si Mi, Ruo-bing Liu, Ya-xin Sang, Xiang-hong Wang

    Published 2020-01-01
    “…The volatile composition of yogurt produced by Streptococcus thermophilus fermentation at different time points was investigated by gas chromatography-mass spectrometry combined with simultaneous distillation and extraction. …”
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    Article
  2. 222

    Statistical approach to synthesise biogenic silica nanoparticles from rice husk and conjugated with Justicia adhatoda extract as green, slow‐release biocide by Peerzada Gh Jeelani, C Ramalingam

    Published 2021-06-01
    “…The phytochemical investigation of Justicia adhatoda was done by Gas chromatography–mass spectrometry (GC‐MS) spectroscopy. …”
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    Article
  3. 223

    Essential Oil Yield Pattern and Antibacterial and Insecticidal Activities of Trachyspermum ammi and Myristica fragrans by Rajgovind Soni, Gaurav Sharma, Nakuleshwar Dut Jasuja

    Published 2016-01-01
    “…The essential oils (EOs) of T. ammi (1.94±30 mL/100 gm) and M. fragrans (5.93±90 mL/100 gm) were extracted using hydrodistillation method. In Gas Chromatography analysis, the beta-pinene, alpha-pinene, alpha-p-menth-1-en-4-ol, Limonene, and elemicin were found as major constituents of T. ammi essential oil whereas M. fragrans essential oil mostly contains Gamma-Terpinolene, p-Cymene, Thymol, and beta-pinene. …”
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    Article
  4. 224

    Screening of Aroma Compounds in Commercial Tea (Camellia sinensis) from Indonesia and Testing Their Activity as Antioxidants by Warsito Warsito, M. Fadel Alief, Vina Octavia Azzahra, M. Farid Rahman, Rurini Retnowati

    Published 2024-12-01
    “…The essential oil yields of the three commercial samples were obtained by distillation using a Liken-Nickerson vessel and analyzed by gas chromatography-mass spectrometry (GC-MS), then tested for antioxidant properties by the DPPH method. …”
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    Article
  5. 225

    Screening of Aqueous Extract of Persea americana Seeds for Alpha-Glucosidase Inhibitors by Tajudeen Afolayan Lawal

    Published 2022-01-01
    “…The most active subfraction was subjected to Fourier transform infrared (FTIR) and gas chromatography mass spectroscopy (GC-MS) analysis to elucidate the active components. …”
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    Article
  6. 226

    Chemical Composition, Antibacterial Test, and Antioxidant Activity of Essential Oils from Fresh and Dried Stropharia rugosoannulata by Lei Wei, Wei Wang, Yueying Hou, Xiaoyang Xie, Xiao Li, Fei Chen, Zhiyao Wang, Yong Zhou, Feifei Li, Bingnian Jing

    Published 2023-01-01
    “…The essential oils were obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS) combined with Kovats retention index. …”
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    Article
  7. 227

    Chemical analysis of volatile oils in Eucalyptus species by GC mass by Noor Jaafer ALtememmi, Neamat Jameel ALjudy, Labeeb Ahmed ALzubaid

    Published 2025-01-01
    “…The yields of leaves essential oils from the hydrodistillation of Eucalyptus species were 0.6- 1% (based on fresh leaves). Gas chromatography-mass spectrometry (GC-MS) methods were employed for Oils found in the leaves of 20 types of Eucalyptus trees in Baghdad, Iraq. …”
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    Article
  8. 228

    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
  9. 229

    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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    Article
  10. 230

    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
  11. 231

    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
  12. 232

    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
  13. 233

    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
  14. 234

    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
  15. 235

    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
  16. 236

    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
  17. 237

    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
  18. 238

    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
  19. 239

    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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    Article
  20. 240