Showing 801 - 820 results of 1,443 for search '"mass spectrometry"', query time: 0.10s Refine Results
  1. 801

    Simultaneous Determination of Five Components of Chaihu-Shugan-San in Beagle Plasma by HPLC-MS/MS and Its Application to a Pharmacokinetic Study after a Single Dose of Chaihu-Shuga... by Yong-liang Zhu, Hui-jun Wang, Hao Xue, Yi Zhang, Qian-shi Cheng, Ling-yun Chen, Xiang-jun Qiu

    Published 2020-01-01
    “…The purpose of our study is to develop a reliable and sensitive high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method to detect five components in beagle plasma and study their pharmacokinetic after oral administration of CHSGS in beagles. …”
    Get full text
    Article
  2. 802

    Thermal Decarboxylation of Betacyanins in Red Beet Betalain-Rich Extract by Agnieszka Kumorkiewicz, Katarzyna Sutor, Boris Nemzer, Zbigniew Pietrzkowski, Sławomir Wybraniec

    Published 2020-02-01
    “…The first tentative structures formed by decarboxylation of the main pigment present in BRE, betanin and its diastereomer, were established by means of liquid chromatography coupled to diode array detection and electrospray ionization tandem mass spectrometry (LC-DAD-ESI-MS/MS). In the extract, two new isomeric bidecarboxylated betanins were tentatively identified. …”
    Get full text
    Article
  3. 803

    Comparative Pharmacokinetic Studies of Four Ginsenosides in Rat Plasma by UPLC-MS/MS after Oral Administration of Panax quinquefolius-Acorus gramineus and Panax quinquefolius Extra... by Hailong Xie, Dongxue Wang, Wenjun Zhang, Xinjia Yan, Ying Zhao

    Published 2019-01-01
    “…In the present study, we simultaneously determined the contents of four main bioactive ginsenosides (Rb1, Rb2, Rd, and Re) in rat plasma using an ultrahigh-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method. Plasma specimens were purified by using the solid-phase extraction procedure, and separation was performed on Waters ACQUITY UPLC BEH C18 (100 mm × 2.1 mm, 1.7 μm) in multiple reaction monitoring (MRM) mode and negative electrospray ionization (ESI) mode. …”
    Get full text
    Article
  4. 804

    A pilot exploratory study for analysis of clinical features and plasma catecholamines in blepharospasm by Lixia Zhu, Hongmei Meng, Wuqiong Zhang, Lijuan Wang, Weixuan Zhao, Jiaai Li, Nilupaer Shafeng, Huaiyu Sun, Ting Jiang, Huiqing Liu, Yu Guo, Shuai Hou

    Published 2025-01-01
    “…Plasma CA levels were measured using liquid chromatography-tandem mass spectrometry. Clinical features, plasma CAs, and metabolite contents were compared between groups. …”
    Get full text
    Article
  5. 805

    Multidimensional library for the improved identification of per- and polyfluoroalkyl substances (PFAS) by Kara M. Joseph, Anna K. Boatman, James N. Dodds, Kaylie I. Kirkwood-Donelson, Jack P. Ryan, Jian Zhang, Paul A. Thiessen, Evan E. Bolton, Alan Valdiviezo, Yelena Sapozhnikova, Ivan Rusyn, Emma L. Schymanski, Erin S. Baker

    Published 2025-01-01
    “…Using a platform coupling reversed-phase liquid chromatography (RPLC), electrospray ionization (ESI) or atmospheric pressure chemical ionization (APCI), drift tube ion mobility spectrometry (IMS), and mass spectrometry (MS), the retention times, collision cross section (CCS) values, and m/z ratios were determined for all analytes and assembled into an openly available multidimensional dataset. …”
    Get full text
    Article
  6. 806

    GC-MS Analysis, Antimicrobial and Antioxidant Activities of Extracts of the Aerial Parts of <i>Conyza sumatrensis</i> by Olapeju O Aiyelaagbe, Stephen O Oguntoye, Abdulmumeen A Hamid, Adebola M Ogundare, David B Ojo, Ajibola Ajao, Nurudeen O Owolabi

    Published 2016-05-01
    “…The extracts were also analysed using Gas chromatography – Mass spectrometry, and the chromatogram coupled with mass spectra of the compounds were matched with a standard library. …”
    Get full text
    Article
  7. 807

    Small open reading frames (sORFs): Driving big improvements in plant development and quality by Kui Dong, Chaofan Shan, Dongyu Wen, Zifan Cui, Jun Cao

    Published 2025-03-01
    “…With the advent of sophisticated technologies such as bioinformatics, ribosome profiling, and mass spectrometry, the investigation of sORFs has experienced a transformative shift and significant expansion. …”
    Get full text
    Article
  8. 808

    Site-specific N-glycosylation characterization and allergenicity analysis of globulin-1 S allele from wheat by Linglin Fu, Rongrong Wang, Jinru Zhou, Chong Wang, Yanbo Wang

    Published 2023-09-01
    “…Moreover, one N-glycosylation site and 6 kinds of N-glycans were identified by mass spectrometry, including 3 high mannose types and 3 complex types. …”
    Get full text
    Article
  9. 809

    Understanding the impacts of dual methionine oxidations in complementarity-determining regions on the structure of monoclonal antibodies by Bo Zhao, Joy Yoon, Bojie Zhang, Youmi Moon, Yue Fu, Yinyin Li, Yunlong Zhao, Hui Xiao, Ning Li

    Published 2024-12-01
    “…In this study, we used hydrogen deuterium exchange mass spectrometry (HDX-MS) and homology modeling to investigate the effects of dual methionine oxidations (heavy chain (HC) Met111 and Met115) within a single CDR on the structure of a mAb. …”
    Get full text
    Article
  10. 810

    Optimization of Enzymatic Hydrolysis Process of Morchella esculenta and Analysis of Volatile Flavor Compounds in Enzymatic Hydrolysate by Xiaofeng ZENG, Mi YAN, Zhixing GE, Lunjiang GAO, Xumin YIN, Yuan DIAO, Sang SHANG, Shunde ZENG

    Published 2025-02-01
    “…To optimize the enzymatic hydrolysis process of Morchella esculenta and expore the volatile flavor compounds in its enzymatic hydrolysate, the enzymatic hydrolysis was optimized by response surface design, and the key flavor compounds were identified by headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) combined with the odor activity value (OAV). …”
    Get full text
    Article
  11. 811

    Identification of Oligopeptides in the Distillates from Various Rounds of Soy Sauce-Flavored Baijiu and Their Effect on the Ester–Acid–Alcohol Profile in Baijiu by Qiang Wu, Shanlin Tian, Xu Zhang, Yunhao Zhao, Yougui Yu

    Published 2025-01-01
    “…Liquid chromatography–tandem mass spectrometry (LC-MS) was employed to identify endogenous peptides in the distillates from the first to seventh rounds of soy sauce-flavored Baijiu. …”
    Get full text
    Article
  12. 812

    Orthogonal Design Study on Factors Affecting the Determination of Common Odors in Water Samples by Headspace Solid-Phase Microextraction Coupled to GC/MS by Shifu Peng, Zhen Ding, Weiwen Xia, Hao Zheng, Yuting Xia, Xiaodong Chen

    Published 2013-01-01
    “…These two odorants have extremely low odor threshold concentrations at ng L−1 level in the water, so a simple and sensitive method for the analysis of such trace levels was developed by headspace solid-phase microextraction coupled to gas chromatography/mass spectrometry. In this study, the orthogonal experiment design L32 (49) was applied to arrange and optimize experimental conditions. …”
    Get full text
    Article
  13. 813

    Structural basis for the interaction between the Drosophila RTK Sevenless (dROS1) and the GPCR BOSS by Jianan Zhang, Yuko Tsutsui, Hengyi Li, Tongqing Li, Yueyue Wang, Salma Laraki, Sofia Alarcon-Frias, Steven E. Stayrook, Daryl E. Klein

    Published 2025-01-01
    “…We further narrowed down the interacting binding epitopes on both dROS1 and BOSS using hydrogen-deuterium exchange mass spectrometry (HDX-MS). This includes beta-strands in dROS1’s third Fibronectin type III (FNIII) domain and a C-terminal peptide in BOSS’ ECR. …”
    Get full text
    Article
  14. 814

    Fecal metabolomics reveals the positive effect of ethanol extract of propolis on T2DM mice by Chunmei Wang, Huiting Zhao, Kai Xu, Yali Du, Jinjia Liu, Jinfei Wang, Yusuo Jiang

    Published 2023-01-01
    “…However, there are have only been a few reports that are based on an ultra-high performance liquid chromatography-quadrupole-time-of-flight-mass spectrometry (UPLC-Q-TOF-MS) analysis of the fecal metabolomics of ethanol extract of propolis (EEP) in the treatment of T2DM. …”
    Get full text
    Article
  15. 815

    Functional Characterization of Sesquiterpene Synthase from Polygonum minus by Su-Fang Ee, Zeti-Azura Mohamed-Hussein, Roohaida Othman, Noor Azmi Shaharuddin, Ismanizan Ismail, Zamri Zainal

    Published 2014-01-01
    “…Gas chromatography-mass spectrometry analysis of the transgenic plants showed that PmSTS was responsible for the production of β-sesquiphellandrene.…”
    Get full text
    Article
  16. 816

    Repellency Potential, Chemical Constituents of Ocimum Plant Essential Oils, and Their Headspace Volatiles against Anopheles gambiae s. s., Malaria Vector by Jonathan Osei-Owusu, William K. Heve, Owusu Fordjour Aidoo, Maxwell Jnr Opoku, Joseph Apau, Kodwo Ninsin Dadzie, Bright Yaw Vigbedor, Kwaafo Akoto Awuah-Mensah, Margaret Appiah, Akwasi Acheampong, Michael Birkett, Antony Hooper

    Published 2023-01-01
    “…The repellency potential and chemical composition of the plants were achieved by using the protected arm-in-cage method and gas chromatography-mass spectrometry (GC-MS) analysis. Among the three Ocimum species, both the essential oils and the headspace volatiles from O. tenuiflorum achieved the longest repellency time lengths of 90–120 minutes. …”
    Get full text
    Article
  17. 817

    Metabolites Profiling of Manilkara mabokeensis Aubrév Bark and Investigation of Biological Activities by Xavier Worowounga, Rami Rahmani, Armel-Frederic Namkona, Sylvie Cazaux, Jean-Laurent Syssa-Magalé, Hubert Matondo, Jalloul Bouajila

    Published 2022-01-01
    “…Interestingly, gas chromatography-flame ionization detector (GC-FID) and gas chromatography-mass spectrometry (GC-MS) analysis were enabled to identify 23 compounds in the essential oil of M. mabokeensis Aubrév bark, which have not been previously described in the literature. …”
    Get full text
    Article
  18. 818

    Urea enhances the yield and quality of bio-oil produced from corncob through pyrolysis by Sakina Ibrahim Bello, Taofik Olatunde Uthman, Serdar Surgun, Abdullahi Muhammad Sokoto

    Published 2025-01-01
    “…Fourier Transform-Infrared Spectroscopy, Gas Chromatography-Mass Spectrometry (GC–MS), Ultimate Analysis, and High Heating Value (HHV) analyses were employed to evaluate the quality of bio-oil produced. …”
    Get full text
    Article
  19. 819

    Phytochemical composition and antioxidant properties of Canarium odontophyllum (Sarawak Olive): A seasonal fruit from Borneo, East Malaysia by Gilbert Ringgit, Bo Eng Cheong, Muhammad Dawood Shah, Shafiquzzaman Siddiquee

    Published 2025-02-01
    “…The phytochemical composition was determined by Liquid Chromatography Mass Spectrometry Quadrupole Time of Flight (LCMS-QTOF). …”
    Get full text
    Article
  20. 820

    Role of toxic and essential elements in sleep duration of patients with cardiovascular diseases by Namam Ali Azadi, Samaneh Nakhaee, Najmaldin Ezaldin Hassan, Borhan Mansouri, Masoumeh Ariyaee

    Published 2025-01-01
    “…Serum concentrations of zinc (Zn), copper (Cu), Iron (Fe), arsenic (As), mercury (Hg), and nickel (Ni) were measured using a gas chromatography-mass spectrometry. The prevalence of short-sleep duration (< 7 h), normal sleep duration (7–8 h), and long-sleep duration (> 8 h) were 36%, 10.6%, and 53.3%, respectively. …”
    Get full text
    Article