Filters








24,496 Hits in 9.2 sec

Validation of Ultra High Pressure Liquid Chromatography (UHPLC) with Pre-column Derivatization Method for Quantitative Analysis of Histamine in Fish and Fishery Products

Karl Bryan Perelonia, Flordeliza Cambia, Ulysses Montojo
2019 The Philippine Journal of Fisheries  
A B S T R A C T A pre-column derivatization-ultra high performance liquid chromatographic (UHPLC) method is described for the determination of histamine in fish and fishery products.  ...  The detection and quantification limit were 2.7 and 8.3 µg/g, respectively. The uncertainty was estimated to be ± 0.45.  ...  Limit of detection (LOD) and limit of quantification (LOQ) As part of the validation study, the limit of detection (LOD) and limit of quantification (LOQ) were determined.  ... 
doi:10.31398/tpjf/26.2.2018a0004 fatcat:rxkvszbubjhjhl35k5xburza5m

Recent Analytical Approaches in Quality Control of Cannabis sativa L. and Its Preparations

Elsayed Ibrahim, Ghada Hadad, Randa Abdel Salam, Amany Ibrahim, Safwat Ahmed, Mohamed Radwan, Waseem Gul, Mahmoud ElSohly
2018 Records of Pharmaceutical and Biomedical Sciences  
The quality control of the plant is a critical for its legalization and globalization.  ...  This review deals with the recent analytical methods (years 2015-2018) in the quality control of Cannabis, including the traditional chromatographic methods like HPLC, LC/MS/MS, UPLC, GC/FID, and GC/MS  ...  Acknowledgment The authors thank the Ministry of Higher Education-Missions Sector and National Institute on Drug Abuse (NIDA).  ... 
doi:10.21608/rpbs.2018.5518.1014 fatcat:urwfwzbknbcg7lgpdptcnyfqhe

Multidetection of antibiotics in liver tissue by ultra-high-pressure-liquid-chromatography–tandem mass spectrometry

Andreia Freitas, Jorge Barbosa, Fernando Ramos
2015 Journal of chromatography. B  
Abstract 37 38 A multiresidue quantitative screening method covering 39 antibiotics from 7 different 39 families by Ultra-High-Pressure-Liquid-Chromatography tandem Mass Spectrometry 40 (UHPLC-MS/MS) is  ...  The CCα and CCβ were determined according to the 50 maximum residue limit (MRL) or the minimum required performance limit (MRPL), 51 when established. 52 53 54  ...  Shen, Validation of a method for the determination of 377 chloramphenicol in poultry and swine liver by ultra-performance liquid 378 chromatography coupled with tandem mass spectrometry, J AOAC Int. ]  ... 
doi:10.1016/j.jchromb.2014.11.008 pmid:25481418 fatcat:6taueax2wfenvbokuii6u4xotq

Chemometrics: A new scenario in herbal drug standardization

Ankit Bansal, Vikas Chhabra, Ravindra K. Rawal, Simant Sharma
2014 Journal of Pharmaceutical Analysis  
Chromatography and spectroscopy techniques are the most commonly used methods in standardization of herbal medicines but the herbal system is not easy to analyze because of their complexity of chemical  ...  This review focuses on the recent various important analytical techniques, important chemometrics tools and interpretation of results by PCA, and applications of chemometrics in quality evaluation of medicinal  ...  Parveen Garg chairman of ISFCP, Moga for supporting this work.  ... 
doi:10.1016/j.jpha.2013.12.001 pmid:29403886 pmcid:PMC5761221 fatcat:llpfy3bd6baxdn2k6iyvp3qrtq

A holistic strategy for quality and safety control of traditional Chinese medicines by the "iVarious" standard system

Anzhen Chen, Lei Sun, Hang Yuan, Aiying Wu, Jingguang Lu, Shuangcheng Ma
2017 Journal of Pharmaceutical Analysis  
The other seven research elements represent sample collection (V), the set of items (a), the choice of methods (r, u and i), holistic quality evaluation (o and s), and safety (s) test, respectively.  ...  The element of information (i) involving "digitization", "artificial intelligence", and "Internet" is the digital form of quality standard.  ...  Foundation of NIFDC (2013WA8) and the National Natural Foundation of China (81303214).  ... 
doi:10.1016/j.jpha.2017.07.008 pmid:29404049 pmcid:PMC5790695 fatcat:mt3z4uba35e5rme7qaocwtjpia

CORRELATION BETWEEN ANGIOTENSIN-CONVERTING ENZYME INHIBITORS LIPOPHILICITY AND PROTEIN BINDING DATA

Jasna Trbojević-Stanković, Jadranka Odović
2012 Acta Medica Medianae  
(logP values) or ultra-high performance liquid chromatographytandem mass spectrometry (UHPLC-MS) and reversed-phase thin-layer chromatography (RP-TLC) lipophilicity data (ϕ0, CHI or C0 parameters, respectively  ...  The possible application of hydrophobicity data in drugs protein binding evaluation can be of great importance in drug bioavailability.  ...  Acknowledgment This work was partly supported by the Ministry of Education and Science of the Republic of Serbia as a part of Project TR34031.  ... 
doaj:36956e0b5a4b40cfb5725ff9e422bab5 fatcat:m273a4dkerfsxe6mdujva35isq

Comparison between ultra-performance liquid chromatography with tandem mass spectrometry and a chemiluminescence immunoassay in the determination of cyclosporin A and tacrolimus levels in whole blood

YONG-WHA LEE
2013 Experimental and Therapeutic Medicine  
In the present study, the performance of the recently developed high-throughput, rapid ultra-performance liquid chromatography combined with tandem mass spectrometry (UPLC-TMS) method was validated for  ...  The method of measuring cyclosporin A and tacrolimus using UPLC-TMS was established and the precision, limit of detection (LOD), limit of quantitation (LOQ) and matrix effect were validated.  ...  by ultra-performance liquid chromatography with tandem mass spectrometry.  ... 
doi:10.3892/etm.2013.1325 pmid:24255687 pmcid:PMC3829750 fatcat:rhezyvxy5bhwlomd45wtivmyf4

Determination of benzoxazinoids in spring and winter varieties of wheat using ultra-performance liquid chromatography coupled with mass spectrometry

I. Kowalska, M. Kowalczyk
2018 Acta Chromatographica  
The determination of benzoxazinoids was performed by combining pressurized liquid extraction, ultra-performance liquid chromatography, and tandem mass spectrometry.  ...  This study evaluated the influence of cultivars and production systems on the composition of natural products (benzoxazinoids) in wheat aerial parts.  ...  The study was supported by the National Science Centre of Poland (project number 2011/01/ D/NZ9/04684). Special thanks goes to MSc Sylwia Pawelec and Barbara Ciarkowska for technical assistance.  ... 
doi:10.1556/1326.2018.00418 fatcat:lb5gw4ajsndulj37ygvspjxsyi

Multi-residue and multi-class method for the determination of antibiotics in bovine muscle by ultra-high-performance liquid chromatography tandem mass spectrometry

Andreia Freitas, Jorge Barbosa, Fernando Ramos
2014 Meat Science  
A multi-residue quantitative screening method covering 41 antibiotics from 7 different families, by ultra-high-performance-liquid-chromatography tandem Mass Spectrometry (UHPLC-MS/MS), is described.  ...  CCα and CCβ were determined according the maximum residue limit (MRL) or the minimum required performance limit (MRPL), when required.  ...  Nowadays, the use of ultra-high performance liquid chromatography (UHPLC) provides numerous advantages in terms of resolution, sensitivity and also in minimizing time of analysis which is an important  ... 
doi:10.1016/j.meatsci.2014.04.003 pmid:24845337 fatcat:iangkwm4kfhdpcef4m2g3ydmim

Evaluation of hungarian wines for resveratrol by overpressured layer chromatography

Zsuzsa Király-Véghely, Ágnes Móricz, Klára Otta, György Kátay
2013 Journal of Planar Chromatography - Modern TLC  
(cis-and trans-isomers) content of wine.  ...  A method, including solid phase extraction sample preparation, overpressured layer chromatographic separation and subsequent densitometric evaluation, was developed for measurement of total resveratrol  ...  in the field of layer liquid chromatography [59] .  ... 
doi:10.1556/jpc.26.2013.2.10 fatcat:j4sug2zs7zcczghypwyz53jg2q

Supercritical Fluid Chromatography – Mass Spectrometry: Recent Evolution And Current Trends

Gioacchino Luca Losacco, Jean-Luc Veuthey, Davy Guillarme
2019 TrAC. Trends in analytical chemistry  
In contrast to liquid chromatography (LC), 49 the coupling of SFC-MS requires the use of an interface in order to deal efficiently with the 50 decompression of supercritical CO 2 and possible precipitation  ...  Nonetheless, SFC-MS is capable of 56 reaching comparable sensitivity values to LC-MS, and in some cases performing even better. 57 Several applications have been recently developed for SFC-MS, spacing  ...  Frost, Enantiomeric separation and 538 quantification of R/S-amphetamine in urine by ultra-high performance supercritical fluid 539 chromatography tandem mass spectrometry, Journal of Chromatography B,  ... 
doi:10.1016/j.trac.2019.07.005 fatcat:pksqhxu54vg47c3htiz444zixy

Safety of Plastic Food Packaging: The Challenges about Non-Intentionally Added Substances (NIAS) Discovery, Identification and Risk Assessment

Lilian Seiko Kato, Carlos A. Conte-Junior
2021 Polymers  
In terms of NIAS risk assessment and prioritization, the threshold of toxicological concern (TTC) concept is the most applied tool for risk assessment.  ...  Degradation products are almost the primary source of NIAS in plastic FCMs, most from antioxidants as Irganox 1010 and Irgafos 168, following by oligomers and side reaction products.  ...  Conflicts of Interest: The authors reported no potential conflict of interest.  ... 
doi:10.3390/polym13132077 pmid:34202594 fatcat:ac7quznnozgn3d7jz6qssyee34

Analytical strategies for LC–MS-based targeted metabolomics

Wenyun Lu, Bryson D. Bennett, Joshua D. Rabinowitz
2008 Journal of chromatography. B  
Sample preparation and liquid chromatography approaches are discussed, with an eye towards the challenge of dealing with a diversity of metabolite classes in parallel.  ...  We suggest that both are viable solutions, with MRM preferred when targeting a more limited number of analytes, and full scan preferred for its potential ability to bridge targeted and untargeted metabolomics  ...  Ferguson from AppliedBiosystems for analyses of selected samples, and Mark Sanders and the reviewers for comments on the manuscript.  ... 
doi:10.1016/j.jchromb.2008.04.031 pmid:18502704 pmcid:PMC2607197 fatcat:4ihm4gto5nfazkve7w2c6ucg7m

Analytical, Bioanalytical, Stability-Indicating Methods: Key Part of Regulatory Submissions [chapter]

Mahesh Mukund Deshpande
2021 Analytical Chemistry - Advancement, Perspectives and Applications  
In the current chapter, the meaning and requirements of analytical methods, procedures, acceptance criteria and evaluation of stability indicating methods, need, recommendations for bioanalytical methods  ...  The analytical, bioanalytical and stability-indicating methods are essential part of all above said regulatory submissions.  ...  The Chromatographic techniques including High performance liquid chromatography (HPLC), Ultra-performance liquid chromatography (UPLC), UHPLC and Capillary Electrophoresis are commonly used techniques  ... 
doi:10.5772/intechopen.93566 fatcat:4vlokvl76nf2rmqhqnct44fnxa

Monitoring of Organophosphorus Pesticides in Brazilian Food

Tatiana SM Fernandes
2019 American Journal of Biomedical Science & Research  
The use of multi-residue methods emerges as a more common and efficient way of performing pesticide residue analyses on hundreds of different compounds, and it is possible to measure a range of MRLs of  ...  According to the Brazilian Federal Decree No. 4,074 of 2002, the monitoring of pesticides can also be part of the evaluation process in the registration of new products, or yet the re-evaluation of products  ... 
doi:10.34297/ajbsr.2019.04.000769 fatcat:rg2wzkzgareztfgu2u65evxzp4
« Previous Showing results 1 — 15 out of 24,496 results