Showing 301 - 320 results of 969 for search '"liquid chromatography"', query time: 0.05s Refine Results
  1. 301

    A GREEN AND EFFICIENT HPLC-DAD METHOD FOR THE ANALYSIS OF PHENOLIC COMPOUNDS IN ORANGE WASTE by Mirella T. Ferreira Ranzeti, Gabriela Cremasco, Daniel Rinaldo

    Published 2025-01-01
    “…This study presents a sustainable high-performance liquid chromatography photodiode array detection (HPLC-DAD) method for analyzing polar phenolic compounds in sweet orange (Citrus sinensis) residues. …”
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    Article
  2. 302

    Isolation, Synthesis and Characterization of Rosiglitazone Maleate Impurities by Singamsetty Radha Krishna, Mandava Venkata Naga Brahmeshwar Rao, Tirmalaraju Satyanaryana Raju, Vurimidi Himabindu, Ghanta Mahesh Reddy

    Published 2008-01-01
    “…Three unknown impurities in rosiglitazone maleate 1 bulk drug at level below 0.1% (ranging from 0.05 to 0.1%) were detected by simple reverse phase high performance liquid chromatography. These impurities were preliminarily identified with LC-MS and characterized by the mass number of the impurities. …”
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  3. 303

    UHPLC‐Q‐TOF‐MS/MS Dereplication to Identify Chemical Constituents of Hedera helix Leaves in Vietnam by Hong Ngoc Pham, Chieu An Tran, Thi Diep Trinh, Ngoc Lan Nguyen Thi, Huynh Nhu Tran Phan, Van Nhan Le, Ngoc Hung Le, Van Trung Phung

    Published 2022-01-01
    “…Methanolic extract of ivy had been analyzed by ultra-high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UHPLC‐Q‐TOF‐MS/MS). …”
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    Article
  4. 304

    Clinical and genetic analysis of methylmalonic aciduria in 60 patients from Southern China: a single center retrospective study by Hiba Abid, Areeba Abid, Sarah Sohail, Sara Jawaid

    Published 2025-02-01
    “…Additionally, we discuss the limitations of first-tier newborn screening tests due to high false positive rates and recommend second-tier testing using liquid chromatography coupled with tandem mass spectrometry to increase specificity and reduce false positives. …”
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    Article
  5. 305

    Analysis of the Dissipation Behavior of Defoliants in Cotton Fiber during Field and Scouring Process Using Liquid and Gas Chromatography by Mingbo Ma, Pirah Ayaz, Wanhui Jin, Munir Hussain, Wenlong Zhou

    Published 2019-01-01
    “…This study was carried out to evaluate the dissipation behavior of four commonly used defoliants tribufos, diuron, thidiazuron, and ethephon in cotton fiber during field stage and also in cotton scouring using liquid chromatography and gas chromatography. Field trials showed that although all the defoliants dissipated fast, however, the fiber from the tribufos and ethephon applied field had considerable potential to exceed the maximum residue limit when the fiber was harvested at common intervals after application of defoliants. …”
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  6. 306

    Thermal Oxidation Induces Lipid Peroxidation and Changes in the Physicochemical Properties and β-Carotene Content of Arachis Oil by Ayodeji Osmund Falade, Ganiyu Oboh

    Published 2015-01-01
    “…Then, the total carotenoid and β-carotene contents were evaluated using spectrophotometric method and high performance liquid chromatography, respectively. The results of the study revealed a significant increase (P<0.05) in the acid and peroxide values and malondialdehyde concentration of the heated oil when compared with the fresh arachis oil. …”
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    Article
  7. 307

    Environmental Applications of Mass Spectrometry for Emerging Contaminants by Anil Kumar Meher, Akli Zarouri

    Published 2025-01-01
    “…This review highlights the pivotal role of mass spectrometry (MS) in monitoring ECs, emphasizing its high sensitivity, specificity, and versatility across various techniques such as Gas Chromatography-Mass Spectrometry (GC-MS), Liquid Chromatography-Mass Spectrometry (LC-MS), and High-Resolution Mass Spectrometry (HR-MS). …”
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  8. 308

    Peculiarities of natural honey classification in the course of forensic commodity examination by P. P. Kanivets

    Published 2023-12-01
    “…The scientific article describes the peculiarities of classification of natural honey during forensic commodity examination, reveals the methodological aspects of forensic commodity examination of honey, identifies theoretical and practical problems of commodity research of honey, reveals the commodity characteristics of honey and its defects, instrumental methods of honey examination, in particular gas and liquid chromatography, spectroscopy, solid-phase microextraction, describes the main microbiological methods that can be used in the study of honey, offers a systematisation of information data on the peculiarities of forensic examination of honey with regard to its characteristic defects. …”
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    Article
  9. 309

    Pharmacokinetic evaluation of the interaction between oral kaempferol and ethanol in rats by Zhou Zhaoxiang, Wang Meng, Guo Zengjun, Zhang Xiaoying

    Published 2016-12-01
    “…The concentration of kaempferol in plasma was estimated by ultra high performance liquid chromatography. During coadministration, a significant increase of the area under the plasma concentration-time curve as well as the peak concentration were observed, along with a dramatic decrease in total body clearance. …”
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  10. 310

    Modified QuEChERS Based on Mixed Adsorbent Cleanup of Mycotoxins in Corn by Liyuan Zhang, Anna Dai, Runzhong Yu, Lili Qian

    Published 2020-01-01
    “…In order to analyze the mycotoxins in corn, the modified QuEChERS high-performance liquid chromatography was applied to extract, clean up, and detect mycotoxins in a nonpolar system. …”
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  11. 311

    Spectrum-Effect Relationships of Flavonoids in Glycyrrhiza uralensis Fisch. by Tingting Li, Shiyao Hua, Jiahua Ma, Lin Dong, Fang Xu, Xueyan Fu

    Published 2020-01-01
    “…Fingerprints were established by high performance liquid chromatography (HPLC). There were 15 common peaks in the fingerprints by similarity evaluations of the chromatographic fingerprints. …”
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    Article
  12. 312

    Rapid Analysis Procedures for Triglycerides and Fatty Acids as Pentyl and Phenethyl Esters for the Detection of Butter Adulteration Using Chromatographic Techniques by Daniele Naviglio, Marina Dellagreca, Francesco Ruffo, Anna Andolfi, Monica Gallo

    Published 2017-01-01
    “…The third method involves the transesterification of triglycerides in fat through reaction with 2-phenylethanol in a single step; 2-phenylethanol possesses a chromophore, and the phenethyl esters formed are analysed by high-performance liquid chromatography (HPLC) with UV detection.…”
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  13. 313

    Rapid and Quantitative Determination of S-Adenosyl-L-Methionine in the Fermentation Process by Surface-Enhanced Raman Scattering by Hairui Ren, Zhaoyang Chen, Xin Zhang, Yongmei Zhao, Zheng Wang, Zhenglong Wu, Haijun Xu

    Published 2016-01-01
    “…Concentrations of S-Adenosyl-L-Methionine (SAM) in aqueous solution and fermentation liquids were quantitatively determined by surface-enhanced Raman scattering (SERS) and verified by high-pressure liquid chromatography (HPLC). The Ag nanoparticle/silicon nanowire array substrate was fabricated and employed as an active SERS substrate to indirectly measure the SAM concentration. …”
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    Article
  14. 314

    Validation of Simultaneous Quantitative Method of HIV Protease Inhibitors Atazanavir, Darunavir and Ritonavir in Human Plasma by UPLC-MS/MS by Tulsidas Mishra, Pranav S. Shrivastav

    Published 2014-01-01
    “…The paper describes a selective, sensitive, and robust method for simultaneous determination of three protease inhibitors atazanavir, darunavir and ritonavir in human plasma by ultra performance liquid chromatography-tandem mass spectrometry. Materials and Methods. …”
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  15. 315

    Characterization of the Active Ingredient and Prediction of the Potential Mechanism of Dahuoluo Pill via Mass Spectrometry with the Network Pharmacology Method by Haoran Xu, Yuelin Bi, Xin Feng, Jiaqi Wang, Gengyuan Yu, Tonghua Zhang, Tianyi Li, Xuhua Gao, Runhua Liu, Yu Sun, Hao Wu, Linlin Fang, Chenning Zhang, Yikun Sun

    Published 2023-01-01
    “…Hence, we analysed the chemical components of DHLP and the DHLP components absorbed in blood by using ultraperformance liquid chromatography-Q-exactive-orbitrap-mass spectrometry. …”
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  16. 316

    Upper Gastrointestinal Bleeding from Gastric Amyloidosis in a Patient with Smoldering Multiple Myeloma by Mihajlo Gjeorgjievski, Treta Purohit, Mitual B. Amin, Paul J. Kurtin, Mitchell S. Cappell

    Published 2015-01-01
    “…Endoscopic biopsies revealed amyloid deposition in the lamina propria, consistent with gastric amyloidosis. Liquid chromatography tandem mass spectrometry performed on peptides extracted from Congo red-positive microdissected areas of paraffin-embedded stomach specimens revealed a peptide profile consistent with AL- (lambda-) type amyloidosis. …”
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    Article
  17. 317

    UPLC-TOF-MS Characterization and Identification of Bioactive Iridoids in Cornus mas Fruit by Shixin Deng, Brett J. West, C. Jarakae Jensen

    Published 2013-01-01
    “…An ultra performance liquid chromatography (UPLC) coupled with photodiode array spectrophotometry (PDA) and electrospray time-of-flight mass spectrometry (ESI-TOF-MS) was employed and mass parameters were optimized. …”
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    Article
  18. 318

    Multiple Adenomatous Duodenal Polyposis by Zdena Zádorová, Jan Hajer, Václav Mandys

    Published 2013-01-01
    “…Afterwards we screened the patient for germline MYH mutations using the denaturing high-performance liquid chromatography (DHPLC) in combination with sequencing. …”
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    Article
  19. 319

    The Addition of Tomato and Spinach Powder to Semolina Pasta: A Study of the Impact of the Production Process and Cooking on Phenolic Compounds by Silvia Marzocchi, Federica Pasini, Renzo Santi, Maria Fiorenza Caboni

    Published 2025-01-01
    “…High-performance liquid chromatography–electrospray ionization triple quadrupole mass spectrometry (HPLC-ESI-QqQ-MS) was employed to analyse the free and bound phenolic content in the raw materials, as well as in both dried uncooked and cooked pasta. …”
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    Article
  20. 320

    Hydroxyl-platelet-activating factor exists in blood of healthy volunteers and periodontal patients by Smaragdi Antonopoulou, Alexandros Tsoupras, George Baltas, Helen Kotsifaki, Zacharias Mantzavinos, Constantinos A. Demopoulos

    Published 2003-01-01
    “…The hydroxyl-PAF analogue was purified by high-performance liquid chromatography, detected by biological assays and identified by electrospray analysis. …”
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    Article