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Journal articles on the topic 'UHPLC-ESI'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Nikolić, Valentina, Jelena Zvezdanović, and Sandra Konstantinović. "UHPLC-DAD-ESI-MS analysis of the 'Centaurium erythraea' infusion." Advanced Technologies 11, no. 1 (2022): 13–21. http://dx.doi.org/10.5937/savteh2201013n.

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Chemical composition was estimated in a tea sample, i.e. infusion prepared from dried aerial herb of Centaurium erythraea. The plant was harvested in the Stara Planina mountain (Serbia, 42°43'00"N; 24°55'04"E) during the flowering stage. The flowering tops of the plant were dried to the moisture content of 7.89 (w/w) in a dark place. Qualitative analysis was done by Ultrahigh performance liquid chromatography-diode array detector-electrospray mass spectrometry (UH-PLC-DAD-ESI-MS/MS) method. The aim of this study was to detect and identify phytochemicals in the infusion prepared in a traditiona

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2

Manninen, Marianna, Maarit Karonen, and Juha-Pekka Salminen. "Chemotaxonomic Markers for the Leaf Buds of Common Finnish Trees and Shrubs: A Rapid UHPLC MS Fingerprinting Tool for Species Identification." Molecules 27, no. 20 (2022): 6810. http://dx.doi.org/10.3390/molecules27206810.

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In this study, a chemotaxonomic tool was created on the basis of ultra-high-performance liquid chromatography–mass spectrometry (UHPLC–MS) for the identification of 13 common Finnish deciduous trees and shrubs from their leaf bud metabolites. The bud extracts were screened with UHPLC–ESI–QqQ–MS and UHPLC–ESI–Q–Orbitrap–MS to discover suitable markers for each species. Two approaches were tested in the marker selection: (1) unique species-specific markers to obtain selective fingerprints per species and (2) major markers to maximise the sensitivity of the fingerprints. The markers were used to

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3

Wang, Jian, Wendy Cheung, and Willis Chow. "Ultra-High Performance Liquid Chromatography/Electrospray Ionization-Tandem Mass Spectrometry Determination of 151 Pesticides in Soybeans and Pulses." Journal of AOAC INTERNATIONAL 96, no. 5 (2013): 1114–33. http://dx.doi.org/10.5740/jaoacint.12-465.

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Abstract This paper presents the application of ultra-high performance LC (UHPLC) and MS for the determination of 151 pesticides in soybeans and pulses. A core-shell particle (2.6 μm particle size) column and a fully porous sub-2 μm (1.7 μm particle size) column showed comparable performance in chromatographic resolution and separation, increasing selectivity, and reducing analysis time. UHPLC was coupled with either a triple quadrupole mass analyzer (MS/MS) or a quadrupole Orbitrap (namely Orbital trap) mass spectrometer (Q-Orbitrap MS), which possesses fast data acquisition capability. Both

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4

Nannapaneni, Nagaraj Kumar, Sunil S. Jalalpure, Rajendraprasad Muppavarapu, and Sunil Kumar Sirigiri. "An ultra high performance liquid chromatography-tandem mass spectrometry method for the quantification of linagliptin in human plasma." RSC Advances 6, no. 71 (2016): 66756–66. http://dx.doi.org/10.1039/c6ra10450a.

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5

Studzińska, Sylwia, Piotr Cywoniuk, and Krzysztof Sobczak. "Application of ion pair chromatography coupled with mass spectrometry to assess antisense oligonucleotides concentrations in living cells." Analyst 144, no. 2 (2019): 622–33. http://dx.doi.org/10.1039/c8an01603h.

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6

Yang, Chun-Ju, Wu-Hsun Chung, and Wang-Hsien Ding. "Optimization of double-vortex-assisted matrix solid-phase dispersion for the rapid determination of paraben preservative residues in leafy vegetables." RSC Advances 10, no. 58 (2020): 35557–64. http://dx.doi.org/10.1039/d0ra05658h.

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7

Chen, Yung-Chih, Yi-Ting Ao, and Wang-Hsien Ding. "Determination of microcystins in water samples by deep eutectic solvent-based vortex-assisted liquid–liquid microextraction coupled with ultrahigh-performance liquid chromatography-high resolution mass spectrometry." RSC Advances 9, no. 66 (2019): 38669–76. http://dx.doi.org/10.1039/c9ra07544e.

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8

Sharma, Yashaswini, Ravikishore Velamuri, John Fagan, and Jim Schaefer. "Full-Spectrum Analysis of Bioactive Compounds in Rosemary (Rosmarinus officinalis L.) as Influenced by Different Extraction Methods." Molecules 25, no. 20 (2020): 4599. http://dx.doi.org/10.3390/molecules25204599.

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Rosmarinus officinalis is a potent antioxidant herb rich in polyphenols. Ultra-high-performance liquid chromatography, coupled with electrospray ionization and quadrupole-time of flight mass spectrometry (UHPLC-ESI-QTOF-MS), enables an exhaustive, full-spectrum analysis of the molecular constituents of natural products. The study aimed to develop a rapid UHPLC method to contribute new insights into the phytochemical composition of rosemary and to assess the performance of nine different procedures for extraction. These include fresh tissue homogenization, fresh and dry leaf decoction, and thei

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9

Sepúlveda, Beatriz, Alberto Cornejo, Daniela Bárcenas-Pérez, José Cheel, and Carlos Areche. "Two New Fumarprotocetraric Acid Lactones Identified and Characterized by UHPLC-PDA/ESI/ORBITRAP/MS/MS from the Antarctic Lichen Cladonia metacorallifera." Separations 9, no. 2 (2022): 41. http://dx.doi.org/10.3390/separations9020041.

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Lichens are symbiotic organisms between algae and fungi, which are makers of secondary compounds named as lichen substances. Hyphenated techniques have significantly helped natural product chemistry, especially UHPLC/ESI/MS/MS in the identification, separation, and tentative characterization of secondary metabolites from natural sources. Twenty-five compounds were detected from the Antarctic lichen Cladonia metacorallifera for the first time using UHPLC-PDA/ESI/Orbitrap/MS/MS. Compounds 5 and 7 are reported as new compounds, based on their MS/MS fragmentation routes, and considered as fumarpro

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10

Ma, You-Ning, Wen-Jun Gui, and Guo-Nian Zhu. "The analysis of azocyclotin and cyhexatin residues in fruits using ultrahigh-performance liquid chromatography-tandem mass spectrometry." Analytical Methods 7, no. 5 (2015): 2108–13. http://dx.doi.org/10.1039/c4ay02624a.

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Ultrahigh-performance liquid chromatography coupled to electrospray positive ionization and tandem mass spectrometry (UHPLC-ESI(+)-MS/MS) was applied for the quantification and identification of azocyclotin and cyhexatin in fruit samples.

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11

Silva, Caio de Oliveira Gorgulho, Tallyta Santos Teixeira, Kelly Barreto Rodrigues, et al. "Combination of MALDI-TOF MS and UHPLC-ESI-MS for the characterization of lytic polysaccharide monooxygenase activity." Analytical Methods 12, no. 2 (2020): 149–61. http://dx.doi.org/10.1039/c9ay01774g.

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Two new mass spectrometry methods, MALDI-TOF MS and hydrophilic interaction UHPLC-ESI-MS, were developed for the characterization of cellulose-active lytic polysaccharide monooxygenases, expanding the analytical toolbox for the study of these enzymes.

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12

Xie, Qingling, Bin Li, Feibing Huang, et al. "Simultaneous Determination of 12 Bioactive Constituents in Bupi Yiqi No. 1 Recipe by Ultrahigh-Performance Liquid Chromatography Tandem Mass Spectrometry." Journal of AOAC INTERNATIONAL 103, no. 1 (2020): 117–23. http://dx.doi.org/10.5740/jaoacint.19-0162.

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Abstract Background: Bupi Yiqi No. 1 Recipe (BPYQ), a traditional Chinese medicine formula, has been widely used as a treatment of multidrug resistance during chemotherapy in colorectal cancer and for the prevention of gastrointestinal cancer recurrence for decades. Objective: In this study, a rapid, reliable, and accurate ultrahigh-performance LC (UHPLC) coupled with electrospray ionization (ESI)–tandem MS (MS/MS) method was developed for the simultaneous determination of 12 major bioactive components, including protocatechuic acid, astilbin, rutin, calycosin-7-O-β-D-glucoside, ginsenoside Re

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13

Anto, Arockia Raj A., and J. Vinnarasi. "UHPLC-ESI-QTOF-MS Analysis on Canthium Coromandelicum Stem." Research Journal of Chemistry and Environment 25, no. 11 (2021): 41–46. http://dx.doi.org/10.25303/2511rjce4146.

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A rapid ultra high-performance liquid chromatography coupled with crossover triple quadrupole time of flight mass spectrometry (UHPLC- ESI -QTOF-MS/MS) method has been developed for the identification of debasement products. According to the distinctive fragmentation patterns, the presence of 79 compounds with retention time between 1.05 to 26.81 minutes was found. In Canthium coromandelicum stem, 22 amino acids, 10 fatty acids, 6 alkaloids, 6 steroids, 2 flavonoids, 2 terpenoids, 2 phenolic, 4 lipids, 3 anthraquinone glycosides, sugars, vitamins were distinguished. These outcomes demonstrated

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14

Gawlik, Maciej, Robert Skibiński, and Łukasz Komsta. "Characterization of lacosamide metabolites by UHPLC–ESI–HRMS method." Acta Chromatographica 32, no. 2 (2020): 107–16. http://dx.doi.org/10.1556/1326.2019.00591.

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In this study, the in vitro phase I metabolism of lacosamide was characterized with the use of ultra-high-performance liquid chromatography combined with high-resolution mass spectrometry (quadrupole time-of-flight). The use of two metabolism simulation techniques (photocatalysis and human liver microsomes) allowed the characterization of a polar metabolite of parent compound, not yet described. The experiment with the participation of HLM gave the ability to describe the full liver metabolic pathway of lacosamide. It has been proven that this molecule undergoes deacetylation, demethylation, a

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15

Wang, Jian, Willis Chow, and Daniel Leung. "Applications of LC/ESI-MS/MS and UHPLC/Qq-TOF-MS for the Determination of 141 Pesticides in Tea." Journal of AOAC INTERNATIONAL 94, no. 6 (2011): 1685–714. http://dx.doi.org/10.5740/jaoacint.sgewang.

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Abstract This paper presents the applications of LC-electrospray ionization (ESI)/MS/MS and ultra-HPLC (UHPLC)/ESI quadrupole (Qq)-time-of-flight (TOF) MS for the determination of 141 pesticides in tea. Pesticides were extracted and cleaned up from tea with a modified quick, easy, cheap, effective, rugged, and safe method using graphitized carbon black and primary-secondary amine sorbents. Quantification was achieved using matrix-matched standard calibration curves with isotopically labeled standards or a chemical analog as internal standards in an analytical range from 5 to 500 μg/kg. The LC/

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16

Wu, Tao, Xiaoyu Wu, Xv Yuan, Yi Wang, Wenhua Zhou, and Weili Li. "Rapid Evaluation of Spermidine from 12 Bean Cultivars by Direct Real-Time Mass Spectrometry Analysis." Molecules 23, no. 9 (2018): 2138. http://dx.doi.org/10.3390/molecules23092138.

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The routine spermidine (SPD) detection method is time-consuming and laborious due to the lengthy chromatographic separation and/or tedious sample derivatization pretreatment. In this study, direct analysis in real-time ionization mode coupled with mass spectrometry (DART-MS) was developed to rapidly determine the SPD content of 12 bean cultivars. The results were compared in detail with those of the classical UHPLC-ESI-QTOF method. After conducting a series of optimizations, a simple sample extraction procedure employing 80% aqueous methanol, was followed by determination of sample extracts di

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17

Haouat, Ammar, Habiba Rechek, Diana C. G. A. Pinto, et al. "Metabolite Profiling, Antioxidant and Key Enzymes Linked to Hyperglycemia Inhibitory Activities of Satureja hispidula: An Underexplored Species from Algeria." Molecules 27, no. 24 (2022): 8657. http://dx.doi.org/10.3390/molecules27248657.

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In the present study, two extracts from the aerial parts of the endemic species Satureja hispidula were analyzed for the first time by ultra-high-performance liquid chromatography coupled with a diode array detector and an electrospray mass spectrometer (UHPLC-DAD-ESI/MS) method in order to identify and quantify their phenolic compounds. These extracts’ antioxidant, α-glucosidase and α-amylase inhibitory activities were also evaluated. UHPLC-DAD-ESI/MS allowed the identification of 28 and 20 compounds in the ethanolic and aqueous extracts, respectively; among them, 5-O-caffeoylquinic acid was

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18

Sulc, Miloslav, Marie Eliasova, Zora Kotikova, and Jaromir Lachman. "Validation of a UHPLC-ESI-MS/MS method for anthocyanidin quantification in potato tubers." Czech Journal of Food Sciences 35, No. 3 (2017): 223–28. http://dx.doi.org/10.17221/389/2016-cjfs.

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The development of bioanalytical methods has become challenging due to sample complexity, requirements for method reliability, and speed of analysis with triple quadrupole LC-MS/MS used widely for the routine analysis of biological materials. The article presents the method development and validation results for pelargonidin and malvidin in potato tubers. The developed method uses a short C18 column, is able to measure all six common anthocyanidins, uses a binary mobile phase with acetonitrile and water both with added 1% formic acid, ESI ionisation in positive mode, 3-h hydrolysis with 2.7 M

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19

Wang, Baolin, Yimeng Lu, Rong Wang, Shumeng Liu, Xiaolong Hu, and Hao Wang. "Transport and metabolic profiling studies of amentoflavone in Caco-2 cells by UHPLC-ESI-MS/MS and UHPLC-ESI-Q-TOF-MS/MS." Journal of Pharmaceutical and Biomedical Analysis 189 (September 2020): 113441. http://dx.doi.org/10.1016/j.jpba.2020.113441.

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20

Biswal, Ranendra Pratap, Rajesh Babu Dandamudi, Durga Prasad Patnana, Meera Pandey, and Kishore Vutukuri V. N. Ravi. "Metabolic fingerprinting of Ganoderma spp. using UHPLC-ESI-QTOF-MS and its chemometric analysis." Phytochemistry 199 (July 31, 2022): 1–15. https://doi.org/10.1016/j.phytochem.2022.113169.

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Biswal, Ranendra Pratap, Dandamudi, Rajesh Babu, Patnana, Durga Prasad, Pandey, Meera, Ravi Kishore Vutukuri, V. N. (2022): Metabolic fingerprinting of Ganoderma spp. using UHPLC-ESI-QTOF-MS and its chemometric analysis. Phytochemistry (113169) 199: 1-15, DOI: 10.1016/j.phytochem.2022.113169, URL: http://dx.doi.org/10.1016/j.phytochem.2022.113169

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21

Panusa, Alessia, Rita Petrucci, Giancarlo Marrosu, Giuseppina Multari, and Francesca Romana Gallo. "UHPLC-PDA-ESI-TOF/MS metabolic profiling of Arctostaphylos pungens and Arctostaphylos uva-ursi. A comparative study of phenolic compounds from leaf methanolic extracts." Phytochemistry 115, no. 1 (2015): 79–88. https://doi.org/10.1016/j.phytochem.2015.01.002.

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Panusa, Alessia, Petrucci, Rita, Marrosu, Giancarlo, Multari, Giuseppina, Gallo, Francesca Romana (2015): UHPLC-PDA-ESI-TOF/MS metabolic profiling of Arctostaphylos pungens and Arctostaphylos uva-ursi. A comparative study of phenolic compounds from leaf methanolic extracts. Phytochemistry 115 (1): 79-88, DOI: 10.1016/j.phytochem.2015.01.002, URL: http://dx.doi.org/10.1016/j.phytochem.2015.01.002

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22

Wang, Jian, and Wendy Cheung. "UHPLC/ESI-MS/MS Determination of 187 Pesticides in Wine." Journal of AOAC INTERNATIONAL 99, no. 2 (2016): 539–57. http://dx.doi.org/10.5740/jaoacint.15-0265.

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Abstract This paper presents an ultra HPLC/electrospray ionization-tandem MS method to determine pesticides in wine. We adopted the quick, easy, cheap, effective, rugged, and safe (QuEChERs) method for extraction and used core-shell column to achieve ultra-HPLC to develop and validate a simple and fast method to analyze 187 pesticide residues in red and white wine samples. Pesticide residues were extracted from wine samples using QuEChERS. Ultra HPLC/electrospray ionization-tandem MS quantification was achieved using matrix-matched standard calibration curves with isotopically labeled standard

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23

Delcambre, Adéline, Yann André, and Cédric Saucier. "Sequencing of red wine proanthocyanidins by UHPLC-ESI-Q-ToF." Journal of Applied Bioanalysis 1, no. 2 (2015): 46–54. http://dx.doi.org/10.17145/jab.15.009.

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24

Zolkeflee, Nur Khaleeda Zulaikha, Nurul Shazini Ramli, Azrina Azlan, and Faridah Abas. "In Vitro Anti-Diabetic Activities and UHPLC-ESI-MS/MS Profile of Muntingia calabura Leaves Extract." Molecules 27, no. 1 (2022): 287. http://dx.doi.org/10.3390/molecules27010287.

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Anti-diabetic compounds from natural sources are now being preferred to prevent or treat diabetes due to adverse effects of synthetic drugs. The decoction of Muntingia calabura leaves was traditionally consumed for diabetes treatment. However, there has not been any published data currently available on the processing effects on this plant’s biological activity and phytochemical profile. Therefore, this study aims to evaluate the effect of three drying methods (freeze-drying (FD), air-drying (AD), and oven-drying (OD)) and ethanol:water ratios (0, 50, and 100%) on in vitro anti-diabetic activi

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25

Wang, Mei, Ping Yu, Amar G. Chittiboyina, et al. "Characterization, Quantification and Quality Assessment of Avocado (Persea americana Mill.) Oils." Molecules 25, no. 6 (2020): 1453. http://dx.doi.org/10.3390/molecules25061453.

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Avocado oil is prized for its high nutritional value due to the substantial amounts of triglycerides (TGs) and unsaturated fatty acids (FAs) present. While avocado oil is traditionally extracted from mature fruit flesh, alternative sources such as avocado seed oil have recently increased in popularity. Unfortunately, sufficient evidence is not available to support the claimed health benefit and safe use of such oils. To address potential quality issues and identify possible adulteration, authenticated avocado oils extracted from the fruit peel, pulp and seed by supercritical fluid extraction (

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26

Kieliszek, Marek, and Stanisław Błażejak. "Speciation Analysis of Selenium in Candida utilis Yeast Cells Using HPLC-ICP-MS and UHPLC-ESI-Orbitrap MS Techniques." Applied Sciences 8, no. 11 (2018): 2050. http://dx.doi.org/10.3390/app8112050.

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Selenium plays a key role in the proper metabolism of living organisms. The search for new selenium compounds opens up new possibilities for understanding selenometabolome in yeast cells. This study was aimed at the identification of compounds containing selenium in the feed yeasts Candida utilis ATCC 9950. Yeast biomass was kept in aqueous solutions enriched with inorganic selenium (20 mg·L−1) for 24 h. Speciation analysis of the element was performed using the HPLC-ICP-MS and UHPLC-ESI-Orbitrap MS techniques. The obtained selenium value in the yeast was 629 μg·g−1, while the selenomethionine

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27

Im, Yeong Ran, Inhwan Kim, and Jihyun Lee. "Phenolic Composition and Antioxidant Activity of Purple Sweet Potato (Ipomoea batatas (L.) Lam.): Varietal Comparisons and Physical Distribution." Antioxidants 10, no. 3 (2021): 462. http://dx.doi.org/10.3390/antiox10030462.

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The outer layer of purple sweet potato is removed during processing; however, this layer serves as a potential source of phenolics, especially anthocyanins. Herein, the phenolic composition and antioxidant activity were determined for the inner and outer layers of five purple sweet potato cultivars (‘Sinjami’, ‘Jami’, ‘Danjami’, ‘Yeonjami’, and ‘Borami’) harvested in Korea. Anthocyanins were identified using ultra-high-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometer (UHPLC-(ESI)-qTOF-MS) and ultra-high-performance liquid chroma

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28

Li, Xican, Xiaojian Ouyang, Rongxin Cai, and Dongfeng Chen. "3′,8″-Dimerization Enhances the Antioxidant Capacity of Flavonoids: Evidence from Acacetin and Isoginkgetin." Molecules 24, no. 11 (2019): 2039. http://dx.doi.org/10.3390/molecules24112039.

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To probe the effect of 3′,8″-dimerization on antioxidant flavonoids, acacetin and its 3′,8″-dimer isoginkgetin were comparatively analyzed using three antioxidant assays, namely, the ·O2− scavenging assay, the Cu2+ reducing assay, and the 2,2′-azino bis(3-ethylbenzothiazolin-6-sulfonic acid) radical scavenging assay. In these assays, acacetin had consistently higher IC50 values than isoginkgetin. Subsequently, the acacetin was incubated with 4-methoxy-2,2,6,6-tetramethylpiperidine-1-oxy radicals (4-methoxy-TEMPO) and then analyzed by ultra-performance liquid chromatography coupled with electro

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29

Galgano, Fernanda, Roberta Tolve, Teresa Scarpa, et al. "Extraction Kinetics of Total Polyphenols, Flavonoids, and Condensed Tannins of Lentil Seed Coat: Comparison of Solvent and Extraction Methods." Foods 10, no. 8 (2021): 1810. http://dx.doi.org/10.3390/foods10081810.

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The lentil seed coat is a waste by-product still rich in phenolic compounds, specifically condensed tannins. The effect of different solvents, as well as different processes, namely conventional solid–liquid extraction (CSLE) and ultrasound-assisted extraction (UAE), on the extraction yield of specific phenolic compound classes was studied. Four empirical two-parameter models were examined to select the one that better fit the experimental data obtained under different operating conditions. Additionally, ultra-high-pressure liquid chromatography coupled to quadrupole-time-of-flight mass spectr

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30

El-Hawary, Enas A., Ahmed Zayed, Annegret Laub, Luzia V. Modolo, Ludger Wessjohann, and Mohamed A. Farag. "How Does LC/MS Compare to UV in Coffee Authentication and Determination of Antioxidant Effects? Brazilian and Middle Eastern Coffee as Case Studies." Antioxidants 11, no. 1 (2022): 131. http://dx.doi.org/10.3390/antiox11010131.

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Coffee is a popular beverage owing to its unique flavor and diverse health benefits. The current study aimed at investigating the antioxidant activity, in relation to the phytochemical composition, of authenticated Brazilian green and roasted Coffea arabica and C. robusta, along with 15 commercial specimens collected from the Middle East. Ultra-high-performance liquid chromatography coupled to high-resolution mass spectrometry (UHPLC-ESI–HRMS) and UV spectrometry were employed for profiling and fingerprinting, respectively. With the aid of global natural product social molecular networking (GN

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31

Liang, Jun, Xin-Dong Guo, and Fang Han. "UHPLC-ESI-MS/MS Quantitative Analyses of Multicomponent Hu Gan Tablets." Molecules 24, no. 23 (2019): 4241. http://dx.doi.org/10.3390/molecules24234241.

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Nowadays, the analysis of the multi-components in Chinese patent medicine prescriptions is being paid more attention. Therefore, in this study for the first time, a simple, rapid ultrahigh performance liquid chromatography–electrospray ionization tandem mass spectrometry (UHPLC-ESI-MS/MS) method was established for simultaneous determination of 18 active compounds in a Chinese patent medicine of Hu Gan tablets (HGT) from different pharmaceutical factories in China. This task has met great emerging challenges from not only structural complexities and similarities but also co-occurrence of water

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32

Sim, Hee-Jung, Ji Kim, Kang Lee, and Jongki Hong. "Simultaneous Determination of Structurally Diverse Compounds in Different Fangchi Species by UHPLC-DAD and UHPLC-ESI-MS/MS." Molecules 18, no. 5 (2013): 5235–50. http://dx.doi.org/10.3390/molecules18055235.

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33

Huh, Jungmoo, Chang-Min Lee, Seoyoung Lee, Soeun Kim, Namki Cho, and Young-Chang Cho. "Comprehensive Characterization of Lignans from Forsythia viridissima by UHPLC-ESI-QTOF-MS, and Their NO Inhibitory Effects on RAW 264.7 Cells." Molecules 24, no. 14 (2019): 2649. http://dx.doi.org/10.3390/molecules24142649.

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Lignans are known to be an important class of phenylpropanoid secondary metabolites. In the course of our studies on the chemodiversity of lignans, the necessity arose to develop a method for the fast detection and identification of bioactive lignan subclasses. In this study, we detected 10 lignan derivatives of different extracts of F. viridissima by UHPLC-ESI-QTOF-MS. Lignan glycosides (1 and 2), lignans (3 and 4), and lignan dimers (5–10) were identified by analysis of their exact masses and MSe spectra along with the characteristic mass fragmentation patterns and molecular formulas. We fur

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34

Rechek, Habiba, Ammar Haouat, Kaouther Hamaidia, et al. "Chemical Composition and Antioxidant, Anti-Inflammatory, and Enzyme Inhibitory Activities of an Endemic Species from Southern Algeria: Warionia saharae." Molecules 26, no. 17 (2021): 5257. http://dx.doi.org/10.3390/molecules26175257.

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Warionia saharae Benth. & Coss. (Asteraceae) is an endemic species of North Africa naturally grown in the southwest of the Algerian Sahara. In the present study, this species’ hydromethanolic leaf extract was investigated for its phenolic profile characterized by ultra-high-performance liquid chromatography coupled with a diode array detector and an electrospray mass spectrometer (UHPLC-DAD-ESI/MS). Additionally, the chemical composition of W. saharae was analyzed by gas chromatography–mass spectrometry, and its antioxidant potential was assessed through five in vitro tests: DPPH● scavengi

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35

Wei, Jinchao, Renjian Xu, Yuanyuan Zhang, Lingyu Zhao, Shumu Li, and Zhenwen Zhao. "Ultra-High-Performance Liquid Chromatography–Electrospray Ionization–High-Resolution Mass Spectrometry for Distinguishing the Origin of Ellagic Acid Extracts: Pomegranate Peels or Gallnuts." Molecules 29, no. 3 (2024): 666. http://dx.doi.org/10.3390/molecules29030666.

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Ellagic acid, known for its various biological activities, is widely used. Ellagic acid from pomegranate peels is safe for consumption, while that from gallnuts is only suitable for external use. However, there is currently no effective method to confirm the source of ellagic acid. Therefore, this study establishes an analysis method using ultra-high-performance liquid chromatography–electrospray ionization–high-resolution mass spectrometry (UHPLC-ESI-HR-MS) to identify the components of crude ellagic acid extracts from pomegranate peels and gallnuts. The analysis revealed that there was a mix

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Ho, Raimana, Niloufar Marsousi, Philippe Eugster, Jean-Pierre Bianchini, and Phila Raharivelomanana. "Detection by UPLC/ESI-TOF-MS of Alkaloids in Three Lycopodiaceae Species from French Polynesia and Their Anticholinesterase Activity." Natural Product Communications 4, no. 10 (2009): 1934578X0900401. http://dx.doi.org/10.1177/1934578x0900401007.

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Three Lycopodiaceae species from French Polynesia, Lycopodium venustulum C. Gaudichaud, Lycopodiella cernua (C. Linnaeus) R. E. Pichi Sermolli and Lycopodium henryanum E. D. Brown were investigated for their alkaloidal composition by UHPLC/ESI-TOF-MS. Ten alkaloids were identified, with lycopodine and lycodoline being the main constituents in the three species. The acetylcholinesterase-inhibitory activities of the three species are probably due to the occurrence of huperzine A, huperzine B, huperzine E, huperzinine and lycopodine.

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Maximo, Héros José, Francisca Diana da Silva Araújo, Carolina Clepf Pagotto, et al. "Influence of Citrus sunki and Poncirus trifoliata Root Extracts on Metabolome of Phytophthora parasitica." Metabolites 14, no. 4 (2024): 206. http://dx.doi.org/10.3390/metabo14040206.

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Phytophthora parasitica is an oomycete pathogen that infects a broad range of crops of worldwide economic interest; among them are citrus species. In general, some Citrus and the rootstocks of related genera offer considerable resistance against P. parasitica; therefore, understanding the mechanisms involved in the virulence of this pathogen is crucial. In this work, P. parasitica secondary metabolite production was studied using matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) and ultrahigh-performance liquid chromatography coupled with electrospray ionization

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Granica, Sebastian. "Quantitative and qualitative investigations of pharmacopoeial plant material polygoni avicularis herba by UHPLC-CAD and UHPLC-ESI-MS methods." Phytochemical Analysis 26, no. 5 (2015): 374–82. http://dx.doi.org/10.1002/pca.2572.

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Sun, Jianghao, Zhenlei Xiao, Long-ze Lin, et al. "Profiling Polyphenols in Five Brassica Species Microgreens by UHPLC-PDA-ESI/HRMSn." Journal of Agricultural and Food Chemistry 61, no. 46 (2013): 10960–70. http://dx.doi.org/10.1021/jf401802n.

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Simbala, Herny Emma Inonta, Fahrul Nurkolis, Nelly Mayulu, and Linda Wilhelma Ancella Rotty. "Metabolites of Pinang Yaki (Areca vestiaria) Fruit Extract: A Metabolite Profiling Study." F1000Research 10 (October 20, 2022): 1021. http://dx.doi.org/10.12688/f1000research.73758.3.

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Background: Pinang yaki has bioactive compounds that have potential as a new herbal supplement, but their metabolites profil is lack of data. A better understanding of the bioactive compounds of pinang yaki using untargeted metabolomic profiling studies will provide clearer insight into the health benefits of pinang yaki in further. Methods: Fresh samples of pinang yaki (Areca vestiaria) are obtained from forests in North Sulawesi Province, Indonesia. Samples were used for untargeted metabolomics analysis by UHPLC-MS. Results: Based on an untargeted metabolomic profiling study of pinang yaki,

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Aras, Abdülmelik, Muzaffer Silinsin, Muhammed Nuri Bingol, and Ercan Bursal. "Identification of Bioactive Polyphenolic Compounds and Assessment of Antioxidant Activity of Origanum acutidens." International Letters of Natural Sciences 66 (November 2017): 1–8. http://dx.doi.org/10.18052/www.scipress.com/ilns.66.1.

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The main objective of the current work is to search the antioxidant activities of Origanum acutidens leaves by using DPPH, FRAP and CUPRAC methods severally. Three well known antioxidant compounds (BHA, BHT and ascorbic acid) were used as standards for comparing the extracts. Also, phenolic compounds of Origanum acutidens leaves were identified by UHPLC-ESI-MS/MS. The high concentrations of rosmarinic acid (11158.99 ppb) quinic acid (3200.84 ppb) and naringenin (1238.45 ppb) were detected quantitatively.

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Aras, Abdülmelik, Muzaffer Silinsin, Muhammed Nuri Bingol, and Ercan Bursal. "Identification of Bioactive Polyphenolic Compounds and Assessment of Antioxidant Activity of <i>Origanum acutidens</i>." International Letters of Natural Sciences 66 (November 29, 2017): 1–8. http://dx.doi.org/10.56431/p-b670qx.

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The main objective of the current work is to search the antioxidant activities of Origanum acutidens leaves by using DPPH, FRAP and CUPRAC methods severally. Three well known antioxidant compounds (BHA, BHT and ascorbic acid) were used as standards for comparing the extracts. Also, phenolic compounds of Origanum acutidens leaves were identified by UHPLC-ESI-MS/MS. The high concentrations of rosmarinic acid (11158.99 ppb) quinic acid (3200.84 ppb) and naringenin (1238.45 ppb) were detected quantitatively.

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Kasiotis, Konstantinos M., Eirini Baira, Electra Manea-Karga, Dimitra Nikolopoulou, Konstantinos Ganas, and Kyriaki Machera. "Investigating a human pesticide intoxication incident: The importance of robust analytical approaches." Open Chemistry 19, no. 1 (2021): 107–18. http://dx.doi.org/10.1515/chem-2021-0193.

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Abstract A human intoxication incident attributed to pesticide abuse was investigated using cutting-edge analytical methodologies. An LC-ESI-MS/MS method, based on a hybrid solid-phase extraction protocol (hybrid-SPE), was applied for the detection and quantification of several pesticides and metabolites in human biological fluids. Concomitantly, an UHPLC-HRMS method was applied to investigate potential metabolites, assisted by a complementary GC-MS method to elucidate the presence of plausible pesticides co-formulants. The LC-ESI-MS/MS method exhibited acceptable mean recoveries at the lower

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Manal, Zefzoufi, El Mansouri Az-Eddine, Ait El Had Mustapha, et al. "Analysis and preparation of phenolic and alkaloid compounds from Moroccan Berberis vulgaris organic extract: Molecular docking and optimization by UHPLC/DAD/ESI-MS." Analytical Methods in Environmental Chemistry Journal 7, no. 02 (2024): 29–44. http://dx.doi.org/10.24200/amecj.v7.i02.284.

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Among the natural products, phenolic and alkaloid compounds have the most important constituents and common plant-derived secondary metabolites, and thus, analysis deserves particular attention for their therapeutic proprieties. In this study, the phenolic and alkaloid compounds were analyzed using ultra-high-performance liquid chromatography coupled with diode array detector-tandem electrospray ionization mass spectrometry (UHPLC/DAD/ESI-MS) for three extracts of Moroccan Berberis vulgaris L. Then we optimized and validated results for four phenolic compounds. To evaluate the biological activ

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Bhagya, N., and K. R. Chandrashekar. "Identification and quantification of cytotoxic phenolic acids and flavonoids in Ixora brachiata by UHPLC-DAD and UHPLC-ESI-MS/MS." International Journal of Mass Spectrometry 450 (April 2020): 116290. http://dx.doi.org/10.1016/j.ijms.2020.116290.

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Ben Haj Yahia, Imen, Yosr Zaouali, Maria Letizia Ciavatta, et al. "Polyphenolic Profiling, Quantitative Assessment and Biological Activities of Tunisian Native Mentha rotundifolia (L.) Huds." Molecules 24, no. 13 (2019): 2351. http://dx.doi.org/10.3390/molecules24132351.

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Phenolic profiling of ten plant samples of Mentha rotundifolia (L.) Huds. collected from different bioclimatic areas of Tunisia, was for the first time carried out by using a fast ultra-high-performance liquid chromatography (UHPLC)-high resolution tandem mass spectrometry (HRMS/MS) method on a Q Exactive platform equipped with an electrospray ionization (ESI) source. An intraspecific, interpopulation variability was evidenced and a total of 17 polyphenolic metabolites were identified and quantified by using the UHPLC-HRESIMS/MS method, here validated for specificity, linearity, limit of detec

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Kurek, Eliza, Magdalena Michalska-Kacymirow, Anna Konopka, Olga Kościuczuk, Anna Tomiak, and Ewa Bulska. "Searching for Low Molecular Weight Seleno-Compounds in Sprouts by Mass Spectrometry." Molecules 25, no. 12 (2020): 2870. http://dx.doi.org/10.3390/molecules25122870.

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A fit for purpose analytical protocol was designed towards searching for low molecular weight seleno-compounds in sprouts. Complementary analytical techniques were used to collect information enabling the characterization of selenium speciation. Conceiving the overall characterization of the behavior of selenium, inductively plasma optical mass spectrometry (ICP-MS) was used to determine the total selenium content in entire sprouts as well as in selected extracts or chromatographic fractions. Then, high-performance liquid chromatography combined with ICP-MS (HPLC-ICP-MS) was used to evaluate t

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Buzgaia, Nawal, Tahani Awin, Fakhri Elabbar, et al. "Antibacterial Activity of Arbutus pavarii Pamp against Methicillin-Resistant Staphylococcus aureus (MRSA) and UHPLC-MS/MS Profile of the Bioactive Fraction." Plants 9, no. 11 (2020): 1539. http://dx.doi.org/10.3390/plants9111539.

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Arbutus pavarii Pamp is a medicinal plant commonly used by local tribes in East Libya for the treatment of many diseases, such as gastritis, renal infections, cancer and kidney diseases. In this study, the antibacterial activity of the leaf and stem bark extracts of the plant against methicillin-resistant Staphylococcus aureus (MRSA), as well as the metabolite profiles of the bioactive fractions, was investigated. The antibacterial activity was determined by disc diffusion method, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC), while the microbial reduction

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Chen, Haifang, Yun Yao, Yuan Zhan, et al. "Application of UHPLC/ESI-Q-TOF-MS/MS to Identify Constituents of Erding Granule and Anti-hyperuricemia Effect." Current Pharmaceutical Analysis 15, no. 5 (2019): 465–86. http://dx.doi.org/10.2174/1573412914666180612085117.

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Background: Erding granule (EDG) widely used as an agent with the effect of heat-clearing, detoxifying, eliminating dampness, relieving jaundice and upper respiratory tract disease in clinical application, but the systematic chemical information and anti-hyperuricemia effect of EDG was still unclear. Methods: An ultra-high performance liquid chromatography combined with electrospray ionization quadrupole time-of-flight mass spectrometry (UHPLC/ESI-Q-TOF-MS/MS) method was utilized to rapidly identify the chemical constituents of EDG. The anti-hyperuricemia effect of EDG was evaluated based on t

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Sankar, ASK, Shanmugasundaram Palani, and Ravichandiran Velayudham. "Quality by Design–Applied Liquid Chromatography-Tandem Mass Spectrometry Determination of Enzalutamide Anti-Prostate Cancer Therapy Drug in Spiked Plasma Samples." Analytical Chemistry Insights 12 (January 1, 2017): 117739011772677. http://dx.doi.org/10.1177/1177390117726776.

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This research article presents the Quality by Design (QbD)–finalised conditions for a method that uses liquid chromatography-tandem mass spectrometry for the determination of concentration of enzalutamide (ENZ), an atypical anticancer drug, in a drug formulation and in spiked plasma samples. Critical process attributes (CPA) considered to be the influential parameters in separation, identification, and quantification processes by ultrahigh-performance liquid chromatography-electrospray ionisation-tandem mass spectrometry (UHPLC-ESI-MS/MS) were organic content, buffer strength, pH modifier, flo

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