Showing 581 - 600 results of 693 for search '"Gas Chromatography"', query time: 0.07s Refine Results
  1. 581

    Evaluation of the rainfed and irrigated conditions on biomass and essential oil yield of German chamomile (Matricaria chamomilla) in response to melatonin foliar application by Hossein Gorgini Shabankareh, Mohammad Reza Asgharipour, Ali Salehi Sardoei, Ahmad Reza Kamaliun, Hamid Mohammadi, Mansour Ghorbanpour

    Published 2025-01-01
    “…The composition of essential oils was analyzed using gas chromatography-mass spectrometry (GC/MS). Results indicated that the application of melatonin significantly improved essential oil content and plant performance under drought conditions. …”
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    Article
  2. 582

    Bioactive Sesquiterpenoids from <i>Santolina chamaecyparissus</i> L. Flowers: Chemical Profiling and Antifungal Activity Against <i>Neocosmospora</i> Species by Eva Sánchez-Hernández, Jesús Martín-Gil, Vicente González-García, José Casanova-Gascón, Pablo Martín-Ramos

    Published 2025-01-01
    “…In this work, the phytochemical profile of its flower hydromethanolic extract was investigated by gas chromatography–mass spectrometry, and its applications as a biorational for crop protection were explored against <i>Neocosmospora</i> spp., both in vitro and in planta. …”
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    Article
  3. 583

    Anticancer activity of Ilex khasiana, a rare and endemic species of holly in Northeast India, against murine lymphoma by Charles Lalnunfela, Pawi Bawitlung Lalthanpuii, Hmar Tlawmte Lalremsanga, Zothansiama, Chhaihlo Lalmuansangi, Mary Zosangzuali, Nachimuthu Senthil Kumar, Tochhawng Lalhriatpuii, Kholhring Lalchhandama

    Published 2025-01-01
    “…A methanol extract of the leaves was prepared from which 16 different compounds were identified using gas chromatography-mass spectroscopy. An alkylated phenol, 2,6-di-tert-butylphenol, was the predominant compound. …”
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    Article
  4. 584

    Metabolite profile and antioxidant activities of Trikatu, black pepper, Javanese long pepper, and red ginger essential oils by Dewa Ayu Ika Pramitha, Tati Herlina, Iman Permana Maksum, Ari Hardianto, Abd. Wahid Rizaldi Akili, Jalifah Latip

    Published 2025-02-01
    “…Phytochemical profiling was carried out by gas chromatography-mass spectrometry (GC–MS). Principal Component Analysis (PCA) was performed with the help of R packages of factoMiner and factoExtra to examine the metabolite distributions. …”
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    Article
  5. 585

    First-trimester metabolic profiling of gestational diabetes mellitus: insights into early-onset and late-onset cases compared with healthy controls by Danuta Dudzik, Vangeliya Atanasova, Coral Barbas, Jose Luis Bartha

    Published 2025-01-01
    “…Using advanced analytical techniques, including liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-mass spectrometry (GC-MS), we profiled over 150 lipid species and central carbon metabolism intermediates.ResultsSignificant metabolic alterations were observed in both early- and late-onset GDM groups compared to healthy controls, with a specific focus on glycerolipids, fatty acids, and glucose metabolism. …”
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    Article
  6. 586

    Silver-based plasmonic nanoparticles for biosensor organophosphate pesticides using a single film containing acetylcholinesterase/choline oxidase by D. Hermanto, N. Ismillayli, H. Muliasari, R. Wirawan, S.R. Kamali

    Published 2024-01-01
    “…CONCLUSION: Biosensor measurement outcome aligned with the gas chromatography-mass spectrometry result, which is the accepted standard method for detecting profenofos. …”
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    Article
  7. 587

    Analysis of Volatile Components and Key Aroma Components in Dianhong Congou Black Tea Produced by Variable Temperature Fermentation by WANG Yanyan, LIU Zhiwei, YAN Huiting, LU Jianwei, HE Yamei, GAO Jun, BAI Bing, LU Liping

    Published 2024-12-01
    “…To determine the optimal variable temperature fermentation parameters, the volatile components in DCT samples were analyzed by sensory evaluation, gas chromatography-mass spectrometry (GC-MS), odor activity value (OAV) and orthogonal partial least squares-discriminant analysis (OPLS-DA). …”
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    Article
  8. 588

    Microstructural modifications in bitumens rejuvenated by oil from pyrolysis of waste tires by Michela Alfe, Valentina Gargiulo, Giovanna Ruoppolo, Francesco Cammarota, Pietro Calandra, Cesare Oliviero Rossi, Valeria Loise, Michele Porto, Roberto Di Capua, Paolino Caputo

    Published 2025-01-01
    “…The pyrolysis oil from WTs was produced and characterized using elemental analysis, gas chromatography coupled with mass spectrometry (GCMS), and thermogravimetry. …”
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    Article
  9. 589

    Characteristics and Source-specific Health Risks of Ambient PM2.5-bound PAHs in an Urban City of Northern Taiwan by Yu-Chieh Ting, Chun-Hung Ku, Yu-Xuan Zou, Kai-Hsien Chi, Jhy-Charm Soo, Chin-Yu Hsu, Yu-Cheng Chen

    Published 2023-08-01
    “…Fifteen PAHs in PM2.5 were analyzed via gas chromatography tandem mass spectrometry (GC/MS-MS). …”
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  10. 590

    Exploring the capacity of microorganism treatment for fermentation and glycosidic aroma bioconversion from rose oil distillation wastewater by Mohammad Karami, Mohsen Bagheri, Alireza Abbasi-Baharanchi, Kamahladin Haghbeen, Abdolrahim Nouri, Ali Asghar Karkhane, Mansour Ghorbanpour, Mohsen Farhadpour

    Published 2024-12-01
    “…Results This study highlights the potential of using three different types of microorganisms, namely Lactobacillus acidophilus, Pichia pastoris, and Saccharomyces cerevisiae for the conversion of glycosidically conjugated forms of nonvolatile aroma precursors into valuable aroma compounds. Gas chromatography-mass spectrometry (GC–MS) analysis demonstrated that all three microorganisms could affect the concentration of volatile components. …”
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    Article
  11. 591

    Larvicidal Evaluation against Aedes aegypti and Antioxidant and Cytotoxic Potential of the Essential Oil of Tridax procumbens L. Leaves by Lethicia B. Brandão, Lizandra L. Santos, Rosany L. Martins, Alex B. L. Rodrigues, Erica de M. Rabelo, Allan K. R. Galardo, Sheylla S. M. da S. de Almeida

    Published 2021-01-01
    “…The antioxidant activity was evaluated by the sequestration method of 2,2-diphenyl-1-picrylhydrazyl radical, the cytotoxic activity was evaluated using Artemia salina, the larvicidal bioassay was performed with larvae in the third stage of development of the Aedes aegypti mosquito, and the identification of the metabolites was performed by gas chromatography coupled to the mass spectrometer (GC-MS). …”
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  12. 592

    Biocontrol yeast Kurtzmaniella quercitrusa BS-AY-S1 controls postharvest green mold of citrus fruit by producing metabolites with antifungal activity by Bi Liao, Ou Chen, Hongyan Zhang, Wenjun Wang, Lanhua Yi, Honghai Li, Kaifang Zeng

    Published 2025-01-01
    “…In total, 20 VOCs, including alcohols, aldehydes, esters, ethers and ketones produced by BS-AY-S1, were identified by gas chromatography-ion mobility spectrometry (GC-IMS). In conclusion, BS-AY-S1 demonstrated potential for controlling postharvest green mold in citrus fruit, with its mechanisms of action including the ability to colonize citrus fruit wounds and produce antifungal metabolites and VOCs.…”
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  13. 593

    Axial pressure impact on pyrolysis behavior of Xinjiang coal: An inspiration for in-situ pyrolysis of tar-rich coal by Bingyang Kou, Qingmin Shi, Shuangming Wang, Qiang Sun, Shidong Cui, Xiaolong Yang, Xinyue Zhao, Junwei Qiao

    Published 2025-03-01
    “…The variation of pore structure and volatiles was studied using low-field nuclear magnetic resonance and gas chromatography. Results indicated that pore structure and tar-gas composition evolved synergistically, and presented staged characteristics during pyrolysis under axial stress. 10.0–17.5 MPa, coals compressed to breakage, enhancing pore-fracture connectivity and convective heat transfer during pyrolysis. …”
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  14. 594

    Selection of an optimal method for screening the collection of narrow-leaved lupine held by the Vavilov Institute for the qualitative and quantitative composition of seed alkaloids by A. V. Kushnareva, Т. V. Shelengа, I. N. Perchuk, G. P. Egorova, L. L. Malyshev, Yu. A. Kerv, A. L. Shavarda, M. A. Vishnyakova

    Published 2020-12-01
    “…Qualitative and quantitative indices were compared when target compounds had been extracted with multicomponent mixtures and individual reagents (chloroform, methanol, etc.) and the extracts analyzed using gas chromatography-mass spectrometry. High-performance liquid chromatography combined with mass spectrometry was also employed. …”
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    Article
  15. 595

    Multianalytical Method Validation for Qualitative and Quantitative Analysis of Solvents of Abuse in Oral Fluid by HS-GC/MS by Bruna Claudia Coppe, Bruna Tassi Borille, Taís Regina Fiorentin, Ana Laura Bemvenuti Jacques, Ana Claudia Fagundes, Stela Maris de Jezus Castro, Lysa Silveira Remy, Flavio Pechansky, Renata Pereira Limberger

    Published 2016-01-01
    “…Thus, the present work aimed to develop and validate an analytical method for quantification and detection of solvents used as inhalants of abuse in oral fluid (OF), using Quantisal™ as collector device by headspace and gas chromatography coupled with a mass detector (HS-GC/MS). …”
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  16. 596

    Profiles of Killer Systems and Volatile Organic Compounds of Rowanberry and Rosehip-Inhabiting Yeasts Substantiate Implications for Biocontrol by Iglė Vepštaitė-Monstavičė, Juliana Lukša-Žebelovič, Violeta Apšegaitė, Raimondas Mozūraitis, Robertas Lisicinas, Ramunė Stanevičienė, Laima Blažytė-Čereškienė, Saulius Serva, Elena Servienė

    Published 2025-01-01
    “…The selected <i>H. uvarum</i>, <i>M. pulcherrima</i>, <i>S. cerevisiae</i>, and <i>S. paradoxus</i> yeast strains representing both berries were applied for VOC analysis and identification by gas chromatography-linked mass spectrometry. It was revealed that the patterns of emitted volatiles are yeast species-specific. …”
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    Article
  17. 597

    Metabolite profiling of some organs and the potential of Mukia javanica as an antihypertension by Mentari Putri Pratami, Mentari Putri Pratami, Wawan Sujarwo, Miftahul Huda Fendiyanto, Ratna Yuniati, Ifan Rizky Kurniyanto, Nuniek Widiayani, Mahmoud F. Seleiman, Nawab Ali, Muhammad Fuad Anshori

    Published 2025-01-01
    “…The method used is the gas chromatography–mass spectrometry (GCMS) method. The samples analyzed included several organs of M. javanica, such as roots, stems, leaves, and fruit. …”
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    Article
  18. 598

    Differences in the Quality Components of Wuyi Rock Tea and Huizhou Rock Tea by Zhaobao Wu, Weiwen Liao, Hongbo Zhao, Zihao Qiu, Peng Zheng, Yuxuan Liu, Xinyuan Lin, Jiyuan Yao, Ansheng Li, Xindong Tan, Binmei Sun, Hui Meng, Shaoqun Liu

    Published 2024-12-01
    “…In this study, high-performance liquid chromatography (HPLC), gas chromatography–mass spectrometry (GC–MS), and sensory evaluation methods were used to compare the quality components of Wuyi rock tea and Huizhou rock tea. …”
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    Article
  19. 599

    Nonspecific response of Lake Baikal phytoplankton to anthropogenic impact by A. A. Nikonova, S. S. Vorobyeva

    Published 2022-09-01
    “…Using the method of gas chromatography, we showed a lower (up to 15 %) content of polyunsaturated fatty acids in phytoplankton characterized by stress occurrence. …”
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  20. 600

    Comparative Analysis of Five Moroccan Thyme Species: Insights into Chemical Composition, Antioxidant Potential, Anti-Enzymatic Properties, and Insecticidal Effects by Mohamed Ouknin, Hassan Alahyane, Naima Ait Aabd, Sara Elgadi, Youssef Lghazi, Lhou Majidi

    Published 2025-01-01
    “…<i>satureioides</i>, collected from various geographical regions. Gas chromatography–mass spectrometry (GC-MS) identified thymol, <i>p</i>-cymene, borneol, γ-terpinene, carvacrol, α-pinene, and camphene as major constituents, with variations across species. …”
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    Article