Results 21 to 30 of about 693,447 (358)

Optimization of lutein-zeaxanthine separation on high performance liquid chromatography

Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 1993
Separation of lutein and zeaxanthine which are carotenoidic isomeric pigments on High Performance Liquid Chromatography (HPLC) was investigated. Three different columns were used to separate standard mixtures: a normal phase silica column, a reversed ...
Crenguta TABACARU, Carmen SOCACIU, Gavrila NEAMTU   +2 more
doaj   +1 more source

Determination of catechins in cosmetics by high⁃performance liquid chromatography

Shanghai yufang yixue, 2022
ObjectiveTo establish a high⁃performance liquid chromatography （HPLC） quantitative method for the determination of epicatechin （EC）， （-）⁃epicatechin gallate （ECG）， （-）⁃epigallocatechin （EGC）， （-）⁃epigallocatechin gallate （EGCG）， （-）⁃gallocatechin （GC）， （-
RU Ge, HAN Jing, PENG Xingsheng, ZHENG Rong   +3 more
doaj   +1 more source

Core-Shell, Ultrasmall Particles, Monoliths, and Other Support Materials in High-Performance Liquid Chromatography.

Analytical Chemistry, 2016
A review of the developments that have taken place in the area of supports for high performance liquid chromatography in recent years.
N. Tanaka, D. McCalley
semanticscholar   +1 more source

Determination of stigmasterol hydroperoxides using high-performance liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization

Czech Journal of Food Sciences, 2004
A new specific method using high-performance liquid chromatography-mass spectrometry (HPLC-MS) for the detection of stigmasterol hydroperoxides was developed.
S. Kemmo, V. Ollilainen, A.-M. Lampi, V. Piironen   +3 more
doaj   +1 more source

Brucella NyxA and NyxB dimerization enhances effector function during infection

FEBS Letters, EarlyView.
Brucella abortus thrives inside cells thanks to the translocation of effector proteins that fine‐tune cellular functions. NyxA and NyxB are two effectors that destabilize the nucleolar localization of their host target, SENP3. We show that the Nyx proteins directly interact with each other and that their dimerization is essential for their function ...
Lison Cancade‐Veyre, Arthur Louche, Francine C. A. Gérard, Laurent Terradot, Suzana P. Salcedo   +4 more
wiley   +1 more source

New trends in liquid chromatography and their utilization in analysis of beer and brewery raw materials. Part 3. Comparison of HPLC and UHPLC determination of α- and β-acids.

Kvasný průmysl, 2012
The traditional method of High Performance Liquid Chromatography (HPLC) was compared with the currently increasingly used Ultra- High Performance Liquid Chromatography (UHPLC) on a representative group of 11 hop samples.
Marie JURKOVÁ, Pavel ČEJKA, Jana OLŠOVSKÁ   +2 more
doaj   +1 more source

Development and validation of high-performance liquid chromatographic method for determination of ofloxacin and lomefloxacin in human plasma [PDF]

Journal of the Serbian Chemical Society, 2005
Ahigh-performance liquid chromatographicmethod for the determination of ofloxacin and lomefloxacin in human plasma has been developed and validated. The effect of organic modifiers on the retention of the investigated drugs was investigated.
Zendelovska Dragica, Stafilov Trajče
doaj   +1 more source

In vivo evidence for glycyl radical insertion into a catalytically inactive variant of pyruvate formate‐lyase

FEBS Letters, EarlyView.
Dimeric pyruvate formate‐lyase cleaves pyruvate using a radical‐based mechanism. G734 serves as a radical storage location, and the radical is transferred to the catalytic C419 residue. Mutation of the C418‐C419 pair causes loss of enzyme activity, but does not impede radical introduction onto G734. Therefore, cis‐ but not trans‐radical transfer occurs
Michelle Kammel, A. F. Volker Wagner, R. Gary Sawers   +2 more
wiley   +1 more source

Chromatographic analysis of wheatgrass extracts

Journal of Pharmacy and Bioallied Sciences, 2015
Aim: Wheatgrass (WG) is the shoot of Triticum aestivum Linn. belongs to the family Gramineae, and possess high chlorophyll content and essential vitamins, minerals, vital enzymes, amino acids, dietary fibers etc., It has been shown to possess anti-cancer,
Masood Shah Khan, Rabea Parveen, Kshipra Mishra, Rajkumar Tulsawani, Sayeed Ahmad   +4 more
doaj   +1 more source

P‐glycoprotein modulates the fluidity gradient of the plasma membrane of multidrug resistant CHO cells

FEBS Letters, EarlyView.
To explore the impact of the overexpression of the multidrug‐transporter P‐glycoprotein (ABCB1) on membrane fluidity, we compared the transversal gradient of mobility and microviscosity in plasma membranes of drug‐sensitive Chinese hamster ovary cells (AuxB1) and their multidrug‐resistant derivatives (B30) using the fluorescent n‐(9‐anthroyloxy) fatty ...
Roger Busche, John R. Riordan, Burkhard Tümmler   +2 more
wiley   +1 more source