Results 171 to 180 of about 3,262 (203)

Modelling gradient elution in centrifugal partition chromatography

Journal of Chromatography A, 1997
Varying the phase composition of a multi-component two-phase system during a centrifugal partition chromatography (CPC) separation leads to additional degrees of freedom to influence the separation efficiency and total separation time. Optimisation of a CPC (gradient) separation is a difficult task due to the large number of two-phase systems and the ...
Michel J van Buel, Luuk A.M van der Wielen, Karel Ch.A.M Luyben   +2 more
openaire   +1 more source

Separation of natural products by centrifugal partition chromatography

Journal of Chromatography A, 1988
Abstract Centrifugal liquid-liquid partition chromatography (CPC) with a Sanki CPC apparatus has been used to perform efficient separations of various classes of natural products. Applications involving flavonoids, saponins, coumarins, anthraquinones, phenolic acids and naphthoquinones are described.
A. Marston, C. Borel, K. Hostettmann
openaire   +1 more source

ChemInform Abstract: Countercurrent Chromatography or Centrifugal Partition Chromatography

ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
openaire   +1 more source

Effluent concentration profiles in centrifugal partition chromatography

AIChE Journal, 1997
AbstractCentrifugal partition chromatography (CPC) is a relatively new preparative chromatographic technique. To understand, predict, and optimize CPC separations a model is needed, describing the effluent concentration profile as a function of the phenomena that determine the separation efficiency (mass transfer, mixing, and partitioning).
M. J. van Buel, L. A. M. van der Wielen, K. Ch. A. M. Luyben   +2 more
openaire   +1 more source

Centrifugal partition chromatography in the separation of natural products

Phytochemical Analysis, 1990
AbstractRecent innovations in liquid/liquid chromatographic techniques have led to a resurgence of interest in their use for the separation of natural products. Commercially available instruments which rely on centrifugal acceleration to speed up separation times are based either on a battery of cartridges or on a rotating multilayer coil and can be ...
A. Marston, I. Slacanin, K. Hostettmann
openaire   +1 more source

Isolation and Purification of Lipids by Centrifugal Partition Chromatography

Journal of Liquid Chromatography, 1990
Abstract Methodologies for the separation of various lipid classes including free fatty acids (FA) and fatty acid ethyl esters (FAEE), monoglycerides (MG), diglycerides (DG), triglycerides (TG), phosphoglycerides (PG), and glycosphingolipids (GSL) by Centrifugal Partition Chromatography are presented.
J. G. Alvarez, J. Cazes, J. C. Touchstone, R. L. Grob   +3 more
openaire   +1 more source

Extraction and separation of pinosylvins by Centrifugal Partition Chromatography

Planta Medica, 2015
Pinosylvins are stilbenoid toxins available in the heartwood and knots of Pinaceae, protecting them from microbiological attacks [1]. Extraction of pinosylvins can be easily realized from chopped knots, a less expensive byproduct of wood production, by well-known extraction techniques using non-chlorinated solvents.
L Lorantfy, Z Kovács, D Rutterschmidt, Z Misek, G Rajsch   +4 more
openaire   +1 more source

VANCOMYCIN AS A CHIRAL SELECTOR IN CENTRIFUGAL PARTITION CHROMATOGRAPHY

Journal of Liquid Chromatography & Related Technologies, 2000
The use of vancomycin as a chiral selector was introduced by D. W. Armstrong. This macrocyclic antibiotic was used either free in solution for thin-layer chromatography (TLC) and capillary electrophoresis (CE) or covalently bonded to silica gel in the case of high performance liquid chromatography (HPLC).
Ph. Duret, A. Foucault, R. Margraff
openaire   +1 more source

SEPARATION OF LANTHANOIDS AND ACTINOIDS BY CENTRIFUGAL PARTITION CHROMATOGRAPHY

Journal of Liquid Chromatography & Related Technologies, 1999
The separation of actinoids such as Am from lighter lanthanoids has been investigated based on the liquid-liquid extraction principle. An extractant, 5, 8-diethyl-7-hydroxy-dodecan-6-one oxime (LIX 63), is suitable for separation of actinoids heavier than Am from lanthanoids lighter than Eu.
Harutaka Hoshi, Shigeto Nakamura, Kenichi Akiba   +2 more
openaire   +1 more source

Chapter 11 Enantioseparations in countercurrent chromatography and centrifugal partition chromatography

2002
Countercurrent chromatography (CCC) and centrifugal partition chromatography (CPC), although powerful preparative techniques because of their high capacity, low cost of liquid stationary phases (solvent mixtures), and low solvent consumption, show rather poor efficiency.
Laureano Oliveros, Cristina Minguillón, Pilar Franco, Alain P. Foucault   +3 more
openaire   +1 more source