Showing 361 - 380 results of 693 for search '"Gas Chromatography"', query time: 0.38s Refine Results
  1. 361

    Uncovering the Hydrocracking Efficiency of Iron-Based Catalysts: A Novel Approach to Asphaltene Transformation in Iranian Heavy Oil by Muzaffer Yaşar, Savaş Gürdal, Kadir Yılmaz

    Published 2024-06-01
    “…Gas products were characterized using Gas Chromatography (GC). The investigation aimed to identify the catalyst precursor mixture that would maximize asphaltene conversion while minimizing coke production. …”
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    Article
  2. 362

    Quality analysis of Idesia polycarpa fruit oil samples from cultivars with different phenotypes by Tianting Luo, Jiaqi Xu, Zhouqin Zhen, Xue Pan, Lang Feng, Likang Qin, Tingyuan Ren

    Published 2025-01-01
    “…A total of 532 aroma compounds were identified via gas chromatography–mass spectrometry (GC–MS), with terpenes as the major contributors. …”
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    Article
  3. 363

    Resilience of <i>Chlorella vulgaris</i> to Simulated Atmospheric Gas Compositions of Mars, Jupiter, and Titan by Ariela Likai, Aikaterini Papazi, Kiriakos Kotzabasis

    Published 2025-01-01
    “…Photosynthetic performance was analyzed through chlorophyll a fluorescence induction (JIP-test), metabolic activity via gas chromatography, and biomass accumulation measurements. …”
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  4. 364

    Application of Check-All-That-Apply (CATA) for formulating and characterizing sargassum seaweed-based kombucha drink: Effects of different sugar types and fermentation times by Isnaini Cahyuning, Nurdiana Risma Safita, Hardiningtyas Safrina Dyah, Kunicki Anya, Corcoran Ashley, Ramadhan Wahyu

    Published 2024-01-01
    “…The sensory flavor profile of Seaweed Kombucha was elucidated through Check-All-That-Apply (CATA) and Gas Chromatography-Mass Spectrometry (GC-MS) methodologies. …”
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    Article
  5. 365

    Chemical Composition, Total Phenolic Content, and Antioxidant Activities of the Essential Oils of the Leaves and Fruit Pulp of Annona muricata L. (Soursop) from Ghana by Joseph Nana Gyesi, Rita Opoku, Lawrence Sheringham Borquaye

    Published 2019-01-01
    “…Essential oils were obtained via hydrodistillation and characterized by gas chromatography-mass spectrometry. Antioxidant potential was evaluated via the phosphomolybdenum, hydrogen peroxide scavenging, and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assays. …”
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  6. 366

    Quantitative Determination of p-Cymene, Thymol, Neryl Acetate, and β-Caryophyllene in Different Growth Periods and Parts of Eupatorium fortunei Turcz. by GC-MS/MS by Guanjun Nan, Lina Zhang, Zhengzheng Liu, Yu Liu, Yan Du, Hongwen Zhao, Hongxia Zheng, Rong Lin, Guangde Yang, Shaohua Zheng

    Published 2021-01-01
    “…In this study, a gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS) method was developed and validated to simultaneously determine the contents of p-cymene, thymol, neryl acetate, and β-caryophyllene in roots, stems, and leaves of Eupatorium fortunei Turcz. harvested at different growth periods. …”
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    Article
  7. 367

    THE EFFECT OF HEMP PRЕSS CAKE FLOUR ON FATTY ACIDS COMPOSITION AND MICROBIOLOGICAL QUALITY OF GLUTEN FREE BREAD by GJORE NAKOV, NATALIJA ATANASOVA-PANCEVSKA, SILVIYA IVANOVA, MARIA NIKOLOVA, IVAN DIMOV, MARKO JUKIĆ, JASMINA LUKINAC

    Published 2024-09-01
    “…Seven types of gluten-free bread with different amounts of HPCF (0, 5, 10, 15, 20, 25 and 30 %) were produced. Gas chromatography was used to determinate the amounts of individual fatty acids, as well as the groups of fatty acids (saturated fatty acids, monounsaturated fatty acids, polyunsaturated fatty acids, branched fatty acids). …”
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    Article
  8. 368

    The Pear Aroma in the Austrian Pinot Blanc Wine Variety: Evaluation by Means of Sensorial-Analytical-Typograms with regard to Vintage, Wine Styles, and Origin of Wines by Christian Philipp, Phillip Eder, Walter Brandes, Elsa Patzl-Fischerleitner, Reinhard Eder

    Published 2018-01-01
    “…In this study, a valid stable isotope dilution assay headspace solid-phase microextraction gas chromatography mass spectroscopy (SIDA-HS-SPME-GC-MS) method was developed for the analysis of these compounds, and 102 Austrian Pinot blanc wines of vintages 2013–2016 were analysed. …”
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    Article
  9. 369

    Antioxidative Activity and Volatile Profiles of Maillard Reaction Products between Giant Salamander (Andrias davidianus) Peptides and Glucose during the Heating Process by Wenqian Wang, Shibo Zhao, Jinjin Pei, Pengfei Jiang, Wengang Jin, Ruichang Gao

    Published 2023-01-01
    “…The difference in volatile compounds of the MRPs was also analyzed by gas chromatography-ion mobility spectroscopy. The results indicated that the pH value of the MRPs shrank with the proceeding of heating time, while the browning extent and antioxidative capacity increased. 58 volatile compounds including 24 aldehydes, 12 alcohols, 8 esters, 5 ketones, 4 pyrazines, 2 furans, 1 pyridine, 1 ether, and 1 olefin were detected among the MRPs. …”
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  10. 370

    Distribution and Health Risk Assessment on Dietary Exposure of Polycyclic Aromatic Hydrocarbons in Vegetables in Nanjing, China by Minmin Wu, Zhonghuan Xia, Qianqian Zhang, Jing Yin, Yanchi Zhou, Hao Yang

    Published 2016-01-01
    “…In a market basket study made in Nanjing, China, in which the most common consumed nine kinds of vegetables foodstuffs were sampled, the contents of 16 polycyclic aromatic hydrocarbons (PAHs) were analyzed using gas chromatography with mass spectrometer detector (GC-MS). …”
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    Article
  11. 371

    Effect of Benzothiadiazole Treatment during Veraison on Amino Acid Composition, Degradation and Metabolism in ‘Chardonnay’ Grape by GUAN Ruwen, CHEN Chunxia, ZHANG Yu, HAN Yuqi, WANG Jianfeng, WANG Feifei, WANG Huijun, WANG Bo, JIANG Yumei

    Published 2025-01-01
    “…The contents of glucose, fructose, sucrose, organic acids and amino acids, as well as enzyme activities related to amino acid degradation and metabolism and the resulting aroma products were analyzed by high performance liquid chromatography (HPLC), an automatic amino acid analyzer and solid phase microextraction combined with gas chromatography-mass spectrometry (SPME-GC-MS). The results showed that glutamic acid, arginine and proline were the major amino acids in ‘Chardonnay’ grape. …”
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  12. 372

    Phytotoxicity and Benzoxazinone Concentration in Field Grown Cereal Rye (Secale cereale L.) by C. La Hovary, D. A. Danehower, G. Ma, C. Reberg-Horton, J. D. Williamson, S. R. Baerson, J. D. Burton

    Published 2016-01-01
    “…In addition, BX (DIBOA, DIBOA-glycoside, and BOA) levels were directly determined using gas chromatography. Results showed that rye tissue harvested in March was the most toxic to indicator species, with toxicity decreasing thereafter. …”
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    Article
  13. 373

    Application of the Box-Behnken Design for Optimizing Biodiesel Output from Castor Oil: Analysis and Characterization by Sheyda Rezaei, Seyed Saeid Mohtasebi, Barat Ghobadian, Behzad Nouri, Majid Namdari

    Published 2024-06-01
    “…The characterization techniques employed were Gas Chromatography (GC) for compositional analysis, Flash Point measurement for safety assessment, Kinematic Viscosity evaluation for flow properties, and Density determination for mass-volume relationships. …”
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    Article
  14. 374

    Bioinsecticide Production from Cigarette Wastes by Badhane Gudeta, Solomon K, M. Venkata Ratnam

    Published 2021-01-01
    “…The extracted product was evaluated using a gas chromatography–mass spectrometry (GC-MS) and a UV/visible spectrophotometer. …”
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    Article
  15. 375

    GC-MS Analysis of Bioactive Compounds in Methanolic Extracts of Papaver decaisnei and Determination of Its Antioxidants and Anticancer Activities by Ahmed Aj. Jabbar, Fuad O. Abdullah, Kamaran K. Abdulrahman, Yaseen Galali, Abdullah Sh. Sardar

    Published 2022-01-01
    “…The current study investigates the methanol (99.9%) extracts (10 μg/mL) of roots, leaves, and flowers of Papaver decaisnei in terms of phytochemistry by gas chromatography-mass spectrophotometry GC-MS, in vitro antioxidant activity by radical scavenging and reducing power assays, and finally, the anticancer actions as IC50 (inhibitory concentration at 50%) against human colorectal adenocarcinoma (Caco-2), mammary cancer cells (MCF-7), and human cervical carcinoma (HeLa) cells. …”
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  16. 376

    Physiological value of intestinal microflora by S. Yu. Kuchumova, Ye. A. Poluektova, A. A. Sheptulin, V. T. Ivashkin

    Published 2011-09-01
    “…In the last years in clinical practice chemical methods, in particular gas chromatography (GC) in combination to mass spectrometry (GC-MS) are actively developed, the method of fluorescent DNA hybridization in situ (FISH) is applied, polymerase chain reaction (PCR-diagnostics) became quite widespread method of microorganisms assessment. …”
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    Article
  17. 377

    Chemical Composition of Liquid Smoke from Mangrove Leaves: Potential Aphrodisiac Effects and Implications for Coastal Ecosystem Sustainability by Ratnani Rita D., Mulangsri Dewi A. K., Muhyi Ahmad, Meilani Dwi, Muhaimin Wahid, Arifan Fahmi, Steven Soen, Arianti Forita D.

    Published 2025-01-01
    “…The liquid smoke production process involved pyrolysis at various temperatures to determine the optimal conditions for extracting bioactive compounds. Gas Chromatography-Mass Spectrometry (GC-MS) analysis revealed that the liquid smoke dominantly consists of phenolic compounds, organic acids, and esters, potentially contributing to aphrodisiac effects. …”
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    Article
  18. 378

    Investigating the impact of dioxins, furans, and coplanar polychlorinated biphenyls on mortality, inflammatory states, and chronic diseases: An integrative epidemiological analysis by Jiaxing Tan, Ying Gao, Yuanlin Xia, Peiyan Sun, Wei Qin

    Published 2025-01-01
    “…Exposure was quantified in serum through high-resolution gas chromatography and isotope-dilution high-resolution mass spectrometry. …”
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    Article
  19. 379

    Chemical Characterization of Specific Micropollutants from Textile Industry Effluents in Fez City, Morocco by Hakima Talouizte, Mohammed Merzouki, Mohammed Benlemlih, Mohammed Bendriss Amraoui

    Published 2020-01-01
    “…In this work, characterization of toxic organic compounds is proposed. Based on gas chromatography coupled to mass spectrometry (GC/MS) screening analysis, organic micropollutant diversity of textile effluents from a local textile processing factory was investigated. …”
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  20. 380

    Study of Component Composition and Antimicrobial Activity of the Ophthalmic Emulsion Based on the Safflower Flowers (Carthamus tinctorius L.) by Zhanar Abuova, Aknur Turgumbayeva, Ardak Jumagaziyeva, Kairolla Rakhimov, Aigul Jussupkaliyeva

    Published 2022-01-01
    “…The component composition was determined using gas chromatography with the Agilent 7890A/5975C mass spectrometry technique. …”
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    Article