Results 51 to 60 of about 26,523 (162)

HPLC-DAD finger printing, antioxidant, cholinesterase, and α-glucosidase inhibitory potentials of a novel plant Olax nana

BMC Complementary and Alternative Medicine, 2018
Background The medicinal importance of a novel plant Olax nana Wall. ex Benth. (family: Olacaceae) was revealed for the first time via HPLC-DAD finger printing, qualitative phytochemical analysis, antioxidant, cholinesterase, and α-glucosidase inhibitory
Muhammad Ovais, Muhammad Ayaz, Ali Talha Khalil, Sayed Afzal Shah, Muhammad Saeed Jan, Abida Raza, Muhammad Shahid, Zabta Khan Shinwari   +7 more
doaj   +1 more source

Stability study of Prulifloxacin and Ulifloxacin in human plasma by HPLC–DAD

Journal of Enzyme Inhibition and Medicinal Chemistry, 2015
A new and specific HPLC-DAD method for the direct determination of Prulifloxacin and its active metabolite, Ulifloxacin, in human plasma has been developed. Plasma samples were analysed after a simple solid phase extraction (SPE) clean-up using a new HILIC stationary phase based high-performance liquid chromatography (HPLC) column and an ammonium ...
LOCATELLI, Marcello, Roberta Cifelli, CARLUCCI, Giuseppe, Annalisa Romagnoli   +3 more
openaire   +3 more sources

HPLC/DAD Screening Method for Selected Psychotropic Drugs in Blood

Toxicology Mechanisms and Methods, 2003
The influence of experimental conditions on gradient high-performance liquid chromatography/diode array detector separation and identification of 13 psychotropic drugs belonging to two groups--phenothiazines and tricyclic antidepressants--was examined.
Madej, Katarzyna, Parczewski, Andrzej, Kała, Maria   +2 more
openaire   +3 more sources

Polar Alkaloids from the Caribbean Marine Sponge

Natural Product Communications, 2010
A method involving flash chromatography, semi-preparative phenylhexyl RP HPLC-DAD-ELSD combined with analytic polar-RP HPLC-DAD, was applied to separate and purify six highly nitrogenated bases and a bicyclic amidine alkaloid, the major components of the
Erik L. Regalado, Judith Mendiola, Abilio Laguna, Clara Nogueiras, Olivier P. Thomas   +4 more
doaj   +1 more source

Stability-Indicating HPLC-DAD Determination of Ribavirin in Capsules and Plasma [PDF]

Journal of Chromatographic Science, 2013
A simple, selective and stability-indicating high-pressure liquid chromatographic method was developed for the analysis of ribavirin. Chromatographic separation was achieved by using a CPS Hypersil cyano column (4.6 × 250 mm, 5 µm particle size) with isocratic elution of the mobile phase, which was composed of 50 mM phosphate buffer, adjusted at pH 4 ...
Rim Said, Haggag, Said Fathalla, Belal, Ismail Ibrahim, Hewala, Ola Ahmed, El Rouby   +3 more
openaire   +2 more sources

Development and Validation of an RP-HPLC/DAD Method for Luteolin Quantification in Novel Hydroxyapatite Nanocomposites [PDF]

Brazilian Archives of Biology and Technology
Calcium hydroxyapatite (HAp) is widely used in medical and aesthetic fields for bone repair and dermal applications. Luteolin (LUT), a flavonoid with anti-inflammatory and antioxidant properties, may enhance the therapeutic potential of HAp for collagen ...
Amanda Jansen, Vinícius Monteiro Schaffka, Cynthia Maria Schnekenberg Egg, Guilherme dos Anjos Camargo, Paulo Vitor Farago   +4 more
doaj   +1 more source

Free Amino Acids Analysis in the Venom of the Social Wasp Polistes lanio Under Different Forms of Preservation

Orbital: The Electronic Journal of Chemistry, 2018
Venoms of social wasps have in their composition proteins, peptides, among others and several of these compounds were evaluated for their function in the venom, however, there is still no study of the quantification of free amino acids of venom of social
Viviana de Oliveira Torres, Raul Cremonezi Piva, Willia Fernando Antonialli Junior, Cláudia Andrea Lima Cardoso   +3 more
doaj   +3 more sources

A new internal standard for HPLC assay of conjugated linoleic acid in animal tissues and milk

Czech Journal of Animal Science, 2011
A new method for the quantification of underivatized conjugated linoleic acid (CLA) isomers and CLA-metabolites by silver ion liquid chromatography (Ag+-HPLC) with photodiode array detection (DAD) is described.
M. Czauderna, J. Kowalczyk, M. Marounek, J.P. Michalski, A.J. Rozbicka-Wieczorek, K.A. Krajewska   +5 more
doaj   +1 more source

Direct Identification and Characterization of Phenolic Compounds from Crude Extracts of Buds and Internodes of Grapevine ( cv Merlot)

Natural Product Communications, 2014
The crude methanol extracts of latent buds and internodes Vitis vinifera L. cv. Merlot were used for the determination of phenolic compounds by a combination of reverse phase HPLC with diode array detection (HPLC-DAD) and mass spectrometry (LC-MS).
Said Qsaib, Nuno Mateus, Fatima Ez-zohra Ikbal, Lala Aicha Rifai, Victor de Freitas, Tayeb Koussa   +5 more
doaj   +1 more source

Simultaneous and Direct Determination of Vancomycin and Cephalexin in Human Plasma by Using HPLC-DAD Coupled with Second-Order Calibration Algorithms

Journal of Analytical Methods in Chemistry, 2012
A simple, rapid, and sensitive method for the simultaneous determination of vancomycin and cephalexin in human plasma was developed by using HPLC-DAD with second-order calibration algorithms.
Le-Qian Hu, Chun-Ling Yin, Ya-Hui Du, Zhi-Peng Zeng   +3 more
doaj   +1 more source