Results 41 to 50 of about 26,523 (162)

Revised paper: Neonicotinoids as a potential threat to honey: Development of liquid chromatography methods for their determination [PDF]

Journal on Processing and Energy in Agriculture, 2017
There is an increasing interest on neonicotinoid residues determination in honey samples because they are banned by European Union. Their determination is based on liquid chromatography analytical methods and, therefore, the aim of this study was to ...
Jovanov Pavle, Sakač Marijana, Šarić Bojana, Milovanović Ivan, Jambrec Dubravka, Šarić Ljubiša, Kos Jovana   +6 more
doaj   +1 more source

Optimization of an HPLC-DAD Method for Quercetin Detection

, 2023
High-performance liquid chromatography (HPLC) is one of the most used liquid chromatographic techniques owing to its versatility that allows an optimal resolution. Quercetin (QUE), a polyphenol, has received increasing attention due to its antioxidant properties. Efforts have been made to overcome the traditional poor oral bioavailability of quercetin,
Carvalho, Daniel, Moreira, Fernando, Oliveira, Ana Isabel   +2 more
openaire   +3 more sources

Phenolic composition of jussara (Euterpe edulisMartius) from Minas Gerais and Espírito Santo, Brazil, determined by high performance liquid chromatography coupled to diode array detection and electrospray ionization tandem mass spectrometry (HPLC-DAD-ESI-MS)

Ciência Rural, 2022
: This research assessed the phenolic composition of Jussara pulp from the Brazilian states of Minas Gerais (MG) and Espírito Santo (ES) using HPLC-DAD-MS/MS.
Carolina Tatagiba da Rocha Dadalto, Isidro Hermosín-Gutiérrez, José Pérez-Navarro, Rosa Maria Ojeda-Amador, Sergio Gómez-Alonso, Paulo César Stringheta, Daniele de Almeida Paula, Marcos Roberto Moacir Ribeiro Pinto, Afonso Mota Ramos   +8 more
doaj   +1 more source

Quantitative Content Parameter in the Standardization of Veratrum Aqua, Veratrum Lobelianum Bernh. Based Drug

Разработка и регистрация лекарственных средств, 2021
Introduction. According to the XIV Edition of the Russian Federation State Pharmacopoeia, the quality control of the «Veratrum Lobelianum rhizome and roots» herbal substance is carried out through the determination of the alkaloid sum by means of the ...
E. V. Melnik, M. V. Belova, I. A. Tyurin, G. V. Ramenskaya   +3 more
doaj   +1 more source

Simultaneous Determination of Seven Components in Qibaomeiran Pill by HPLC-DAD [PDF]

Journal of Chromatographic Science, 2009
A high-performance liquid chromatography coupled with photo diode array detection method is developed for simultaneous determination of seven active components in Qibaomeiran pill, including rutin, 2,3,5,4'-tetrahydroxystilbene-2-O-beta-D-glycoside, ferulic acid, psoralen, isopsoralen, emodin, and physcion.
Chunying, Wang, Qiao, Wang, Zhifang, Yuan, Wei, Yang, Fengli, Xie, Lantong, Zhang   +5 more
openaire   +2 more sources

TOXICOLOGICAL DRUG SCREENING BY GC-MS VERSUS HPLC-DAD USING A COMMON EFFICIENT EXTRACTION PROCEDURE SCREENING TOXICOLOGIQUE DES MEDICAMENTS PAR HPLC-DAD ET GC-MS: PROTOCOLE D’EXTRACTION UNIQUE

Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2015
This paper presents a common extraction method for toxicological drug screening by gas chromatography-mass spectrometry (GC-MS) and high-performance liquid chromatography with diode-array detection (HPLC-DAD). Liquid-liquid extraction was performed using
SELOUA ELMRABEH, MOHAMMED IBRIZ, MOHAMMED GHANDI, NAIMA AITDAOUD, MOUNA BENTAFRIT, NARJIS BADRANE, ABDELMAJID SOULAYMANI, RACHIDA SOULAYMANI BENCHEIKH   +7 more
doaj  

A Method of Hepatocyte Extraction Conjugated with HPLC is Established for Screening Potential Active Components in Chinese Medicines—Probing Herba Artemisiae Scopariae as an Exemplifying Approach

Molecules, 2012
In order to establish an effective and quick method for screening potential bioactive compounds in Traditional Chinese Medicines (TCMs), hepatocytes were employed for extracting either bifendate, a clinical medicine for liver diseases, or chemicals in ...
Hong-Wei Fan, Hong-Yu Ma, Xiang-Rui Wu, Yong-Qing Hua, Quan Zhu, Min Hong   +5 more
doaj   +1 more source

Development of the Validated Stability-Indicating Method for the Determination of Vortioxetine in Bulk and Pharmaceutical Formulation by HPLC-DAD, Stress Degradation Kinetics Studies and Detection of Degradation Products by LC-ESI-QTOF-MS

Molecules, 2022
Vortioxetine (VOR) is a new antidepressant drug used to treat major depressive disorder. In this work, a novel, simple, rapid, accurate, precise, selective, stability-indicating, and fully validated high-performance liquid chromatography method with ...
Karol Wróblewski, Małgorzata Szultka-Młyńska, Daria Janiszewska, Anna Petruczynik, Bogusław Buszewski   +4 more
doaj   +1 more source

Methodology Development and Validation of Amphotericin B Stability by HPLC‑DAD

Journal of the Brazilian Chemical Society, 2020
The high worldwide consumption of antibiotics and their complex impurity profiles has drawn the attention of the scientific community to the development and validation of stability methods for these drugs. Amphotericin B is an antibiotic that is a natural fermentation product of bacterium Streptomyces nodosus, used as a broad-spectrum antifungal agent,
Marciela Montenegro, Stefânia de Souza, Raquel Leão, Helvécio Rocha, Claudia de Rezende, Rodrigo de Souza   +5 more
openaire   +3 more sources

HPLC-DAD Determination of Seven Antioxidants and Caffeine in Different Phytopharmaceuticals [PDF]

Journal of Chromatographic Science, 2013
A high-performance liquid chromatography method employing diode array detection was developed to determine levels of the major catechins, proanthocyanidin (procyanidin B2), caffeine, thymoquinone and carvacrol and its isomer, thymol, which are present in different natural complex matrices found in commercial products of Camellia sinensis L.
Ghada M, Hadad, Randa A, Abdel Salam, Rabab M, Soliman, Mostafa K, Mesbah   +3 more
openaire   +2 more sources