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Journal articles on the topic 'Ultra-performance liquid chromatogaphy (UPLC)'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Basharat, Rabia, Vijay Kotra, Lean Yen Loong, et al. "A Mini-review on Ultra Performance Liquid Chromatography." Oriental Journal Of Chemistry 37, no. 4 (2021): 847–57. http://dx.doi.org/10.13005/ojc/370411.

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Chromatography is a widely used analytical tool for separating a mixture of compounds into individual component. High performance liquid chromatography (HPLC) is one of the most important methods used for the separation, identification and quantification of a compounds present in a mixture. It meets many criteria of analysis but its main drawbacks are it is relatively time consuming to run a chromatogram and consumes high amount of solvent compared to other analytical methods. There is a need to develop a method which can overcome these drawbacks of HPLC. Ultra performance liquid chromatograph

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2

Wren, Stephen A. C. "Peak capacity in gradient ultra performance liquid chromatography (UPLC)." Journal of Pharmaceutical and Biomedical Analysis 38, no. 2 (2005): 337–43. http://dx.doi.org/10.1016/j.jpba.2004.12.028.

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3

Wu, Zhi Jiang, and Ying Peng. "Analysis of Penicillin Antibiotics in Cosmetics Using Ultra Performance Liquid Chromatography." Advanced Materials Research 233-235 (May 2011): 87–90. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.87.

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In this study, the utral-performance liquid chromatography (UPLC) method with UV-PDA was utilized to develop a rapid, sensitive reliable method for analysis of 5 penicillin antibiotics in cosmetics productions which the presence of these penicillin in commercial cosmetics samples is prohibited. The samples was prepared by liquid-liquid extraction and then the analyses was carried out on UPLC-PDA. The chromatographic column used was Acquity UPLCTM BEH C18 (100 mm ×2.1 mm,1.7μm) and the mobile phase is Acetonitrile and potassium dihydrogen phosphate(PBS) Buffer solution pH 5.5. Chromatographic s

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Chernova, Alina, Pavel Mazin, Svetlana Goryunova, et al. "Ultra-performance liquid chromatography-mass spectrometry for precise fatty acid profiling of oilseed crops." PeerJ 7 (March 6, 2019): e6547. http://dx.doi.org/10.7717/peerj.6547.

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Oilseed crops are one of the most important sources of vegetable oils for food and industry. Nutritional and technical properties of vegetable oil are primarily determined by its fatty acid (FA) composition. The content and composition of FAs in plants are commonly determined using gas chromatography-mass spectrometry (GS-MS) or gas chromatography-flame ionization detection (GC-FID) techniques. In the present work, we applied ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) technique to FA profiling of sunflower and rapeseed seeds and compared this method with the GC-FID tec

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Bhardwaj, Shalini, Vandana A., Vijay B., and Manish K. Gupta. "ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY: A REVOLUTIONIZED LC TECHNIQUE." International Journal of Drug Regulatory Affairs 2, no. 3 (2018): 83–87. http://dx.doi.org/10.22270/ijdra.v2i3.146.

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High Performance Liquid Chromatography (HPLC) is a major technique for qualitative and quantitative drug analysis. More than 90% of drugs prescribed in official pharmacopoeias are being analyzed HPLC. HPLC analyzes the drug content in a sample with high degree of accuracy and precision. Due to the stringent regulatory requirements the number of samples for drug content analysis has been increased significantly. Therefore, pharmaceutical industries need a fast, accurate and affordable method for drug content analysis. Here, Ultra Performance Liquid Chromatography (U-PLC) offers an advancement o

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Ivleva, Vera B., Ying-Qing Yu, and Martin Gilar. "Ultra-performance liquid chromatography/tandem mass spectrometry (UPLC/MS/MS) and UPLC/MSEanalysis of RNA oligonucleotides." Rapid Communications in Mass Spectrometry 24, no. 17 (2010): 2631–40. http://dx.doi.org/10.1002/rcm.4683.

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Xue, Ying, Lin-Sen Qing, Li Yong, et al. "Determination of Flavonoid Glycosides by UPLC-MS to Authenticate Commercial Lemonade." Molecules 24, no. 16 (2019): 3016. http://dx.doi.org/10.3390/molecules24163016.

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So far, there is no report on the quality evaluation of lemonade available in the market. In this study, a sample preparation method was developed for the determination of flavonoid glycosides by ultra-performance liquid chromatography–mass spectrometry (UPLC-MS) based on vortex-assisted dispersive liquid-liquid microextraction. First, potential flavonoids in lemonade were scanned and identified by ultra-performance liquid chromatography–time of flight mass spectrometry (UPLC-TOF/MS). Five flavonoid glycosides were identified as eriocitrin, narirutin, hesperidin, rutin, and diosmin according t

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Magar, L. P., B. H. Zaware, C. J. Laheru, Dharmendra Singh, S. J. Takate, and M. K. Gupta. "DETERMINATION OF IMPURITIES OF RISPERIDONE API BY ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY (UPLC)." Rasayan Journal of Chemistry 12, no. 02 (2020): 940–48. http://dx.doi.org/10.31788/rjc.2020.1325632.

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Wu, Yan, John R. Engen, and William B. Hobbins. "Ultra performance liquid chromatography (UPLC) further improves hydrogen/deuterium exchange mass spectrometry." Journal of the American Society for Mass Spectrometry 17, no. 2 (2006): 163–67. http://dx.doi.org/10.1016/j.jasms.2005.10.009.

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10

Dadáková, Eva, Martin Křížek, and Tamara Pelikánová. "Determination of biogenic amines in foods using ultra-performance liquid chromatography (UPLC)." Food Chemistry 116, no. 1 (2009): 365–70. http://dx.doi.org/10.1016/j.foodchem.2009.02.018.

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11

Wang, Bo, Jianyu Liu, Xia Zhao, et al. "Determination of Eight Coccidiostats in Eggs by Liquid–Liquid Extraction–Solid-Phase Extraction and Liquid Chromatography–Tandem Mass Spectrometry." Molecules 25, no. 4 (2020): 987. http://dx.doi.org/10.3390/molecules25040987.

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A method for the simultaneous determination of robenidine, halofuginone, lasalocid, monensin, nigericin, salinomycin, narasin, and maduramicin residues in eggs by liquid chromatography–tandem mass spectrometry (LC–MS/MS) was developed. The sample preparation method used a combination of liquid–liquid extraction (LLE) and solid-phase extraction (SPE) technology to extract and purify these target compounds from eggs. The target compounds were separated by gradient elution using high-performance liquid chromatography (HPLC) and ultra-performance liquid chromatography (UPLC). Tandem mass spectrome

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12

Cason, Chevelle A., Stuart A. Oehrle, Thomas A. Fabré, et al. "Improved Methodology for Monitoring Poly(amidoamine) Dendrimers Surface Transformations and Product Quality by Ultra Performance Liquid Chromatography." Journal of Nanomaterials 2008 (2008): 1–7. http://dx.doi.org/10.1155/2008/456082.

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Ultra performance liquid chromatography (UPLC) analysis was utilized for the first time as a methodology for monitoring poly(amidoamine) (PAMAM) dendrimer surface transformations and product quality. Results were compared to high-performance liquid chromatography (HPLC) and were found to provide a vastly improved analytical method for the characterization of dendrimer polydispersity and variance in a typical surface modification. The application of UPLC increased the average number of theoretical plates by a factor of 7 and reduced retention times of analytes by 36%, while improving the resolu

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Antony, Benny, Merina Benny, Binu T. Kuruvilla, and Nishant Kumar Gupta. "A VALIDATED ULTRA-PERFORMANCE LIQUID CHROMATOGRAPHY METHOD FOR NITRATE AND NITRITE MEASUREMENT." Asian Journal of Pharmaceutical and Clinical Research 11, no. 9 (2018): 257. http://dx.doi.org/10.22159/ajpcr.2018.v11i9.26519.

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Objective: The objective of this study was to develop a simple and sensitive ultra-performance liquid chromatography (UPLC) method for determination of nitrate and nitrite in plant extracts and biological samples.Methods: Nitrate was analyzed directly by injecting the filtered sample into UPLC and monitoring the chromatogram at 222 nm whereas, for nitrite analysis, the samples were derivatized using Griess reagent, and chromatogram was monitored at 520 nm. The method was validated for accuracy and precision.Results: The calibration curve was obtained in the range of 0.05–500 μg/ml for nitrate

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Abdel-Gawad, Sherif A. "Ultra-performance liquid chromatography–tandem mass spectrometric determination of ramipril in human plasma." Tropical Journal of Pharmaceutical Research 19, no. 4 (2020): 851–57. http://dx.doi.org/10.4314/tjpr.v19i4.25.

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Purpose: To develop a sensitive and accurate ultra-performance liquid chromatography–tandem mass spectrometric (UPLC-MS) method for quantification of ramipril in human plasma.Methods: Ramipril was extracted from biological fluid using equal volumes of n-hexane and propanol (1:1, v/v), and then chromatographed in a suitable C18 column with methanol: 0.1 % HCOOH (4: 1, v/v) as mobile phase. Atorvastatin was used as an internal standard for the chromatographic separation and quantification. The method was validated according to the United States Food and Drug Administration guidelines for standar

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Rochat, Bertrand, Andres Pascual, Benoît Pesse, et al. "Ultra-Performance Liquid Chromatography Mass Spectrometry and Sensitive Bioassay Methods for Quantification of Posaconazole Plasma Concentrations after Oral Dosing." Antimicrobial Agents and Chemotherapy 54, no. 12 (2010): 5074–81. http://dx.doi.org/10.1128/aac.00022-10.

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ABSTRACT Posaconazole (POS) is a new antifungal agent for prevention and therapy of mycoses in immunocompromised patients. Variable POS pharmacokinetics after oral dosing may influence efficacy: a trough threshold of 0.5 μg/ml has been recently proposed. Measurement of POS plasma concentrations by complex chromatographic techniques may thus contribute to optimize prevention and management of life-threatening infections. No microbiological analytical method is available. The objective of this study was to develop and validate a new simplified ultra-performance liquid chromatography tandem mass

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Kurbanoglu, Sevinc, Ozer Karsavurdan, and Sibel A. Ozkan. "Recent Advances on Drug Analyses Using Ultra Performance Liquid Chromatographic Techniques and their Application to the Biological Samples." Current Analytical Chemistry 15, no. 3 (2019): 277–93. http://dx.doi.org/10.2174/1573411014666180423152612.

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Introduction: Ultra-Performance Liquid Chromatographic (UPLC) method enables analyst to establish an analysis at higher pressure than High Performance Liquid Chromatographic (HPLC) method towards liquid chromatographic methods. UPLC method provides the opportunity to study a higher pressure compared to HPLC, and therefore smaller column in terms of particle size and internal diameter are generally used in drug analysis. The UPLC method has attracted gradually due to its advantages such as short analysis time, the small amount of waste reagents and the significant savings in the cost of their d

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Zhou, Jianwen, Caixia Han, Hui Cao, et al. "Fast identification of wheat 1BL.1RS translocation by reversed-phase ultra-performance liquid chromatography (RP-UPLC)." Crop and Pasture Science 64, no. 9 (2013): 865. http://dx.doi.org/10.1071/cp13246.

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The 1BL.1RS chromosomal translocation in wheat is the result of replacement of the short arm of chromosome 1B of wheat by the short arm of chromosome 1R of rye, which had been widely used as a parental line in worldwide wheat breeding, resulting in a high percentage of wheat cultivars containing this translocation. A fast and reliable approach to identify this translocation is highly desirable in modern wheat breeding. This study compared reversed-phase ultra-performance liquid chromatography (RP-UPLC), acidic polyacrylamide gel electrophoresis (A-PAGE), liquid chromatography coupled to tandem

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Sharma, Arti, Ritika Sharma, Rohit Arora, Saroj Arora, Bikram Singh, and Upendra Sharma. "Quantitative and Qualitative Analysis of Eruca sativa and Brassica juncea Seeds by UPLC-DAD and UPLC-ESI-QTOF." Natural Product Communications 12, no. 9 (2017): 1934578X1701200. http://dx.doi.org/10.1177/1934578x1701200927.

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Eruca sativa and Brassica juncea belong to the Brassicaceae family and have been used traditionally for the treatment of cancer and various cardiovascular ailments. A rapid and simple ultra performance liquid chromatography (UPLC) method has been developed for the simultaneous quantification of erucin, allyl isothiocyanate and benzyl isothiocyanate in E. sativa and B. juncea oil. Eruca sativa oil contains erucin (28.93%), allyl isothiocyanate (0.06%) and benzyl isothiocyanate (0.70%). Identification of other secondary metabolites in E. sativa and B. juncea oil and aqueous methanolic extracts w

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Chen, Lianguo, Qingwei Zhang, Yijing Lin, et al. "Pharmacokinetics and bioavailability of hapepunine in mice by ultra-performance liquid chromatography–tandem mass spectrometry." Acta Chromatographica 32, no. 1 (2020): 44–48. http://dx.doi.org/10.1556/1326.2019.00559.

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An ultra-performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) method was established to determine the hapepunine in mouse blood, and the pharmacokinetics of hapepunine after intravenous (1.0 mg/kg) and intragastric (2.5, 5, and 10 mg/kg) administrations was studied. Delavinone was used as an internal standard. The UPLC ethylene bridged hybrid (BEH) C18 column was used for chromatographic separation. The mobile phase consisted of acetonitrile and 0.1% formic acid with a gradient elution flow rate of 0.4 mL/min. Multiple reaction monitoring (MRM) mode was used for quantitative

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Vishnuvardhan, Chiguru, R. Srinivas, and N. Satheeshkumar. "Development and validation of a UPLC method for screening potentially counterfeit anti-hypertensive drugs using design of experiment." Anal. Methods 6, no. 13 (2014): 4610–16. http://dx.doi.org/10.1039/c4ay00384e.

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Wang, Xiao Fang, Chun Liang Yang, Mao Fang Huang, et al. "Determination of Diflubenzuron Residues in Vegetables by UPLC-MS/MS." Advanced Materials Research 852 (January 2014): 266–69. http://dx.doi.org/10.4028/www.scientific.net/amr.852.266.

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The conditions for detecting residues of diflubenzuron in vegetables by ultra high performance liquid chromatography tandem mass spectrometry were studied. The target was extracted with acetonitrile for 2 min with a homogenizer. The extaction was purifide by a conditioned Florisil SPE cartridge, and then was detected by ultra high-performance liquid chromatography with tandem mass spectrometry. The average recovery was in the range from 87.8 %- 99.2 % at spike levels of 0.1, 1.0 and 10 mg/kg in vegetables, and relative standard deviations was in the range of 4.2 %-8.9 %. The proposed method is

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Pinto, Edgar, António Gomes Soares, and Isabel M. P. L. V. O. Ferreira. "Quantitative analysis of glyphosate, glufosinate and AMPA in irrigation water by in situ derivatization–dispersive liquid–liquid microextraction combined with UPLC-MS/MS." Analytical Methods 10, no. 5 (2018): 554–61. http://dx.doi.org/10.1039/c7ay02722b.

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A novel method was developed for the sensitive, cheap and fast quantitation of glyphosate, glufosinate and aminomethylphosphonic acid (AMPA) in irrigation water by in situ derivatization and dispersive liquid–liquid microextraction (DLLME) combined with ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS).

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Bao, Xi, Xiajuan Jiang, Jianshe Ma, Xianqin Wang, and Quan Zhou. "Bioavailability and Pharmacokinetics of Anisatin in Mouse Blood by Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry." BioMed Research International 2020 (December 23, 2020): 1–7. http://dx.doi.org/10.1155/2020/8835447.

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Background. Anisatin is a neurotoxic sesquiterpene dilactone wildly found in plants of the family Illiciaceae. Due to morphological similarities among Illiciaceae fruits, fatal poisonings are frequent. Objective. This study is aimed at developing a rapid, simple ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method to determine anisatin’s bioavailability in mouse blood and the method’s application to pharmacokinetics. Methods. Blood samples were preprocessed by protein precipitation using acetonitrile. Salicin (internal standard, IS) and anisatin were gradient-el

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Lin, Senyu, Yanping Xian, Zhiqing Xun, et al. "Solid-phase extraction coupled with ultra performance liquid chromatography tandem mass spectrometry to determine seven halogenated salicylanilides in cosmetics." RSC Advances 6, no. 54 (2016): 49011–18. http://dx.doi.org/10.1039/c6ra07944j.

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A solid-phase extraction (SPE) purification coupled with ultra performance liquid chromatography tandem mass spectrometry (SPE-UPLC-MS/MS) method was developed for simultaneous determination of seven halogenated salicylanilides in cosmetics.

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Mincea, Manuela, Ioana Lupşa, Dan Cinghiţă, Ciprian Radovan, and Ioan Talpos. "Determination of methylparaben from cosmetic products by ultra performance liquid chromatography." Journal of the Serbian Chemical Society 74, no. 6 (2009): 669–76. http://dx.doi.org/10.2298/jsc0906669m.

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A new method for the determination of methylparaben by ultra-performance liquid chromatography (UPLC) was developed. Methylparaben is often used as preservative, alone or in combination with other parabens, being added to cosmetic products, pharmaceutical products and foods to avoid microbial contamination. Due to its widespread use and potential risk to human health, assessing human exposure to this compound is of interest. A good determination and quantification of methylparaben was developed with a gradient elution using a mixture of methanol and water (60:40, v/v) within 1.455 min. Under o

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Liang, Shuxuan, Xinfeng Dong, Ming Su, and Hanwen Sun. "Analysis of herbicide atrazine and its degradation products in cereals by ultra-performance liquid chromatography-mass spectrometry." Analytical Methods 8, no. 17 (2016): 3599–604. http://dx.doi.org/10.1039/c6ay00327c.

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A novel ultra-performance liquid chromatography-mass spectrometry (UPLC-MS) method was developed for the first time for the determination of herbicide atrazine (ATR) and its principal metabolites namely desisopropylatrazine (DIA), desethylatrazine (DEA) and hydroxyatrazine (HA) in cereals.

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Mule, Kishorkumar L. "RAPID ANALYTICAL METHOD FOR ASSAY DETERMINATION FOR PROCHLORPERAZINE EDISYLATE DRUG SUBSTANCES BY ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY." International Journal of Current Pharmaceutical Research 9, no. 4 (2017): 118. http://dx.doi.org/10.22159/ijcpr.2017v9i4.20973.

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Objective: To develop and validate new, simple and rapid assay method for Prochlorperazine edisylate drug substance by UPLC as per ICH guidelines.Methods: Ultra performance liquid chromatographic method was developed, optimized and validated on Acquity UPLC by using Acquity BDH300 C4 (100 x 2.1 mm) 1.7µ column. 3.85g ammonium acetate in 1000 ml of water add 0.5 ml trifluoroacetic acid and 1 ml triethylamine (Mobile phase A): 0.5 ml trifluoroacetic acid in 1000 ml acetonitrile mobile phase (Mobile phase B) with gradient program. Detector wavelength 254 nm and column temperature 30 °C.Results: L

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Zhao, Tang-Juan, Juan Chen, and Yan-Ping Shi. "Fingerprint analysis of Oxytropis falcate using ultra-performance liquid chromatography–electrospray ionization tandem mass spectrometry (UPLC-ESI-MS)." Analytical Methods 7, no. 16 (2015): 6810–20. http://dx.doi.org/10.1039/c5ay01093d.

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Dinç, Erdal, and Dumitru Baleanu. "Ultra-Performance Liquid Chromatography for the Multicomponent Analysis of a Ternary Mixture Containing Thiamine, Pyridoxine, and Lidocaine in Ampules." Journal of AOAC INTERNATIONAL 95, no. 3 (2012): 903–12. http://dx.doi.org/10.5740/jaoacint.11-199.

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Abstract New chemometric approaches based on the application of partial least squares (PLS) and principal component regression (PCR) algorithms with fractional wavelet transform (FWT) and continuous wavelet transform (CWT) are proposed for the spectrophotometric multicomponent determination of thiamine hydrochloride (B1), pyridoxine hydrochloride (B6), and lidocaine hydrochloride (LID) in ampules without any separation step. In this study PLS and PCR techniques were applied to the raw spectral data, FWT-coefficients, and FWT-CWT-coefficients. These calibration models were labeled as Raw-PLS an

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Xu, Dan, Yang Zhang, Juji Dai, Yongyu Bai, Yuwu Xiao, and Meng-tao Zhou. "A fast, sensitive, and high throughput method for the determination of nintedanib in mouse plasma by UPLC-MS/MS." Analytical Methods 7, no. 16 (2015): 6561–65. http://dx.doi.org/10.1039/c5ay01207d.

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A sensitive and rapid ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was developed to determine nintedanib in mice plasma using diazepam as the internal standard (IS).

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Loong Chuen Lee, Lee, Seow Lay Ying, Wan Nur Syazwani Wan Mohamad Fuad, Ab Aziz Ishak, and Khairul Osman. "FAST AND SIMPLE FORENSIC RED PEN INK ANALYSIS USING ULTRA-PERFORMANCE LIQUID CHROMATOGRAPHY (UPLC)." Malaysian Journal of Analytical Science 20, no. 2 (2016): 224–30. http://dx.doi.org/10.17576/mjas-2016-2002-02.

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LI, Wen-Shuang, Xian-Chun XIA, and Zhong-Hu HE. "Establishment of Ultra Performance Liquid Chromatography (UPLC) Protocol for Analyzing Carotenoids in Common Wheat." Acta Agronomica Sinica 42, no. 5 (2016): 706. http://dx.doi.org/10.3724/sp.j.1006.2016.00706.

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Zheng, Yanjuan, Qiushi Peng, Rui Dong, et al. "Simultaneous Determination of Methocarbamol and Paracetamol in the Presence of Three Related Substances by Ultra Performance Liquid Chromatography." Current Pharmaceutical Analysis 15, no. 5 (2019): 505–10. http://dx.doi.org/10.2174/1573412914666180702150357.

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Introduction: A rapid, and accurate Ultra Performance Liquid Chromatography (UPLC) method was developed to simultaneously analyze Methocarbamol, Paracetamol and the related substances Materials and Methods: Waters ACQUITY UPLC® BEH Phenyl C18 column was used in conjunction with UV detection at 225nm. Gradient elution with 0.05M, pH 6 phosphate buffer and acetonitrile flow at 0.3mL /min rate were used to separate the substances. The retention times for 4-Aminopheno, Paracetamol, Guaifenesin, Methocarbamol, and 4-Chloroacetanilide were 1.319 minute, 2.224 minute, 4.467 minute, 4.769 minute and 5

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Su, Desen, Yunyun Zheng, Ziqiang Chen, and Yuwu Chi. "Simultaneous determination of six glycosidic aroma precursors in pomelo by ultra-high performance liquid chromatography-tandem mass spectrometry." Analyst 146, no. 5 (2021): 1698–704. http://dx.doi.org/10.1039/d0an01705a.

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kumar, Anshul, Chandana Majee, and Vivek Namdev. "Analytical Method development and Validation of Lamivudine in Formulation by using Reversed Phase Ultra Performance Liquid Chromatography." International Journal of PharmTech Research 13, no. 2 (2020): 1–6. http://dx.doi.org/10.20902/ijptr.2019.130201.

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Aim of the experiment was to develop a simple, specific and accurate reverse phase ultra-performance liquid chromatographic (UPLC) method for the determination of lamivudine in the tablet dosage forms. The chromatographic separation was achieved on Acquity UPLC HSST3 (2.1 x 100mm) 1.8 um particle size and the mobile phase containing 0.1%TFA: MeOH for lamivudine. The run time was 10 min and the retention time of lamivudine was about 4.6. The detection was carried out 215nm using photo diode array detector (PDA) with a flow rate 0.6 ml/min. The linearity of lamivudine with correlation coefficien

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Harp, Bhakti Petigara, Nebebech Belai, and Julie N. Barrows. "Ultra-Performance Liquid Chromatographic Determination of Manufacturing Intermediates and Subsidiary Colors in D&C Red No. 34 and Its Lakes." Journal of AOAC INTERNATIONAL 94, no. 5 (2011): 1548–54. http://dx.doi.org/10.1093/jaoac/94.5.1548.

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Abstract An ultra-performance liquid chromatography (UPLC) method was developed to determine the manufacturing intermediates and subsidiary colors in the monosulfo monoazo color additive D&C Red No. 34 and its lakes. This method is currently used for batch certification of the color additives by the U.S. Food and Drug Administration to ensure that each lot meets published specifications for coloring drugs and cosmetics. The new UPLC method has replaced an HPLC method for determining the intermediates and a TLC method for determining the subsidiary colors. The intermediates are 2-amino-1-na

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Wang, Lu, Shu Liu, Zhong Zheng, Zifeng Pi, Fengrui Song, and Zhiqiang Liu. "Rapid assay for testing superoxide anion radical scavenging activities to natural pigments by ultra-high performance liquid chromatography-diode-array detection method." Analytical Methods 7, no. 4 (2015): 1535–42. http://dx.doi.org/10.1039/c4ay02690j.

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A simple and rapid ultra-high performance liquid chromatography-diode-array detection (UPLC-DAD) method was developed for testing superoxide anion radicals (O<sub>2</sub>˙<sup>−</sup>) scavenging activities to natural pigments.

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Wang, Linxia, Luming Tang, Yi Zheng, et al. "Determination of bosutinib in mice plasma and tissue by UPLC-MS/MS and its application to the pharmacokinetic and tissue distribution study." Analytical Methods 7, no. 21 (2015): 9184–89. http://dx.doi.org/10.1039/c5ay01529d.

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A sensitive and rapid ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method was developed to determine bosutinib in mice plasma and tissue using diazepam as the internal standard (IS).

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Qin, Feng, Jun Huang, Xinjian Qiu, Sihang Hu, and Xi Huang. "Quality Control of Modified Xiaoyao San Through the Determination of 22 Active Components by Ultra-Performance Liquid Chromatography." Journal of AOAC INTERNATIONAL 94, no. 6 (2011): 1778–84. http://dx.doi.org/10.5740/jaoacint.10-422.

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Abstract A simple, sensitive, and reliable ultra-performance liquid chromatography (UPLC) method has been developed for simultaneous determination of 22 major constituents in modified xiaoyao san (MXS), a multiherbal formula. The chromatographic separation was performed on an ACQUITY UPLC BEH C18 column (150 × 2.1 mm, 1.7 μm, particle size), with an aqueous 0.5% acetic acid and acetonitrile mobile phase gradient. The method was validated for linearity (r2 &gt;0.9937), intraday and interday precision (RSD &lt;8.51%), recovery (91.18–107.73%), LOD (0.02–4.17 ng/mL), and LOQ (0.05–12.50 n

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Semwal, Ankit, Raghav Dogra, Kritika Verma, and Rohit Bhatia. "Impact of UPLC-MS in Food and Drug/Metabolite Analysis." Current Pharmaceutical Analysis 17, no. 1 (2020): 10–30. http://dx.doi.org/10.2174/1573412915666190923105355.

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The hyphenation of Ultra-Performance Liquid performance (UPLC) with mass spectrometry (MS) has emerged as a powerful tool in analytical research due to its advanced sensitivity, resolution and speed. Its advanced instrumentation, specialized columns, separation at ultra-high pressure and sophisticated software are the distinguishing features as compared to the traditional separating techniques. It has a wide range of applications in various fields such as analysis of food stuffs, drug metabolites, beverages, toxicology, soil samples and micronutrient analysis. In the present compilation, autho

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Chen, Wen-Ling, Chiung-Wen Chang, and Chia-Yang Chen. "Measuring Ochratoxin A Concentrations in Coffee Beverages with Immunoaffinity Columns and Ultra-Performance Liquid Chromatography/Tandem Mass Spectrometry." Journal of AOAC INTERNATIONAL 99, no. 2 (2016): 469–74. http://dx.doi.org/10.5740/jaoacint.15-0233.

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Abstract This study developed and validated a method for measuring concentrations of ochratoxin A (OTA) in coffee beverages, not coffee beans. The new method involved extraction using immunoaffinity columns and ultra-performance LC (UPLC)-MS/MS using isotope-dilution techniques. The combination of a fused-core column and UPLC significantly shortened chromatographic time to 3 min compared to reported UPLC methods. The method was sensitive, with an LOD and LOQ of 0.52 and 1.73 pg/mL, respectively. Quantitative intraday (n = 4) and interday (n = 4) biases and RSD were both below 15%. The OTA leve

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Cai, Liyun, Zhijie Zheng, Xipei Wang, et al. "Simultaneous determination of atorvastatin and its metabolites in human plasma by UPLC-MS/MS." Analytical Methods 9, no. 6 (2017): 1038–45. http://dx.doi.org/10.1039/c6ay03113g.

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A rapid, sensitive and selective ultra-performance liquid chromatography mass spectrometry (UPLC-MS/MS) method was developed and validated for the quantification of atorvastatin and all its as-yet-identified metabolites in human plasma.

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d’Oliveira, Giulio D. C., Andréa R. Chaves, and Caridad N. Pérez. "Development and Analytical Validation of the Methodology for Vitamins in Tablets by Ultra-Performance Liquid Chromatography." Journal of Chromatographic Science 57, no. 10 (2019): 881–91. http://dx.doi.org/10.1093/chromsci/bmz070.

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Abstract In the present study, we developed a reliable and robust chromatographic method for the quantification of multivitamins in tablet samples by ultra-performance liquid chromatography (UPLC) with photodiode array detection. The vitamins nicotinamide, pyridoxine, riboflavin, and thiamin were analyzed and quantified in a total analysis time of 2.5 minutes, using hydrophilic interaction liquid chromatography stationary phase. Tocopherol acetate and cyanocobalamin were analyzed and quantified in a total analysis time of 2.5 minutes, using reversed-phase (RP)-UPLC. The analysis time reported

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Lv, Song-Feng, Xiang-Hong Wang, Bo Wang, et al. "Determination and pharmacokinetic study of kaempferide in rat plasma by UPLC." Analytical Methods 7, no. 24 (2015): 10238–42. http://dx.doi.org/10.1039/c5ay01789k.

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In this study, a simple, sensitive, and robust analytical method based on ultra-performance liquid chromatography (UPLC) has been developed for the determination of kaempferide in rat plasma using diazepam as the internal standard (IS).

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Zhang, Yuchi, Jingying Xu, Chunming Liu, and Sainan Li. "Screening of neuraminidase inhibitors from the leaves of Syringa velutina Kom. via compound fractionation and in vitro activity evaluation." Analytical Methods 9, no. 3 (2017): 500–510. http://dx.doi.org/10.1039/c6ay02922a.

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A novel hyphenated technique comprised of circulating ultrasound-assisted extraction (CUAE) coupled with an online solvent concentration tank (SCT), centrifugal partition chromatography (CPC), ultra-high performance liquid chromatography (UPLC), and mass spectrometry (MS) was established.

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S, Madhavi, and Prameela Rani A. "SIMULTANEOUS REVERSE-PHASE ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY METHOD DEVELOPMENT AND VALIDATION FOR ESTIMATION OF GRAZOPREVIR AND ELBASVIR." Asian Journal of Pharmaceutical and Clinical Research 11, no. 4 (2018): 100. http://dx.doi.org/10.22159/ajpcr.2018.v11i4.21721.

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Objective: The objective of this study was to develop and validate rapid, specific, sensitive, and precise reverse-phase ultra performance liquid chromatography (RP-UPLC) method for the quantitative determination of grazoprevir and elbasvir, as there are no official monograph and no analytical method by UPLC.Methods: Chromatographic separation was achieved on a Waters Acquity UPLC HSS C18 (2.1 mm × 100 mm, 1.8 micron) column with a 45:55 (v/v) mixture of 0.1% orthophosphoric acid (pH 2.8) and acetonitrile as a mobile phase, thermostated at 30°C with a short run time of 3.0 min.Results: The ret

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Tamošiūnas, Vytautas, and Audrius Padarauskas. "Ultra performance liquid chromatography-tandem mass spectrometry for the determination of 5-nitroimidazoles and their metabolites in egg." Open Chemistry 7, no. 3 (2009): 267–73. http://dx.doi.org/10.2478/s11532-009-0008-0.

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AbstractAn ultra performance liquid chromatography (UPLC) coupled to tandem mass spectrometry (MS/MS) procedure was developed for the determination of five 5-nitroimidazoles (dimetridazole, ipronidazole, metronidazole, ronidazole and ternidazole) and three of their metabolites (1-methyl-2-hydroxymethyl-5-nitroimidazole, 1-(2-hydroxyethyl)-2-hydroxymethyl-5-nitroimidazole and 1-methyl-2-(2′-hydroxyisopropyl)-5-nitroimidazole) in egg matrices. Conditions for UPLC separation and electrospray ionization MS/MS in the positive ion mode were optimized. Samples were prepared by liquid-liquid extractio

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Li, Jian, Junmei Ma, Yan Zhang, and Lei Zheng. "Determination of 4 psychoactive substances in tea using ultra high performance liquid chromatography combined with the quadrupole time-of-flight mass spectrometry." Analytical Methods 12, no. 40 (2020): 4878–84. http://dx.doi.org/10.1039/d0ay01535k.

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In this study, a method for the qualification and quantification of 4 psychoactive substances in tea using ultra high performance liquid chromatography coupled with the quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS) has been developed.

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Xu, Hui-Ying, Hong Xiang, Li-Bin Zhan, Lin Zhang, and Xiao-Xin Sun. "Correction: Simultaneous determination of eight ginsenosides in Zibu Piyin Recipe using ultra-performance liquid chromatography coupled with triple-quadrupole mass spectrometry (UPLC-MS/MS)." Analytical Methods 8, no. 1 (2016): 222. http://dx.doi.org/10.1039/c5ay90099a.

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Correction for ‘Simultaneous determination of eight ginsenosides in Zibu Piyin Recipe using ultra-performance liquid chromatography coupled with triple-quadrupole mass spectrometry (UPLC-MS/MS)’ by Hui-Ying Xu et al., Anal. Methods, 2015, 7, 7527–7533.

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Wadhwa, Geetika, Kowthavarapu Venkata Krishna, Rajeev Taliyan, et al. "Pre-clinical pharmacokinetic and pharmacodynamic modelling study of 4-hydroxyisoleucine using validated ultra-performance liquid chromatography-tandem mass spectrometry." RSC Advances 10, no. 10 (2020): 5525–32. http://dx.doi.org/10.1039/c9ra08121f.

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