Results 221 to 230 of about 19,880 (279)

High-speed counter-current chromatography of apple procyanidins

Journal of Chromatography A, 2000
Apple procyanidins were separated by high-speed counter-current chromatography using a type-J multilayer coil planet centrifuge. Several two-phase solvent systems with a wide range of hydrophobicities from a non-polar hexane system to polar n-butanol systems were evaluated their performance in terms of the partition coefficient and the retention of the
Y, Shibusawa, A, Yanagida, A, Ito, K, Ichihashi, H, Shindo, Y, Ito   +5 more
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Axial dispersion coefficient in high-speed counter-current chromatography

Journal of Chromatography A, 2009
Experimental measurements of axial dispersion coefficients in high-speed counter-current chromatography have been carried out in the single-phase and two-phase modes. Axial dispersion coefficients were calculated from the residence time distribution curve (or the elution profile).
Zhao, Chun-Xia, Xua, Ya-Lan, He, Chao-Hong   +2 more
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Sample capacity in preparative high-speed counter-current chromatography

Journal of Chromatography A, 2007
High-speed counter-current chromatography (HSCCC) is a versatile technique in preparative separation and purification of pure compounds from complex matrices. As a preparative chromatography, there is a need to maximize the column production. Based on the plate theory of Van Deemter, the effect of the sample load on the separation was investigated in a
Zhao, Chun-Xia, He, Chao-Hong
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Isolation of bacitracins A and F by high-speed counter-current chromatography

Journal of Chromatography A, 1991
The major components of bacitracin were separated and purified using high-speed counter-current chromatography (HSCCC). A systematic search for optimum two-phase solvent systems resulted in two systems: chloroform-ethanol-methanol-water (5:3:3:4) and chloroform-ethanol-water (5:4:3).
K, Harada, Y, Ikai, Y, Yamazaki, H, Oka, M, Suzuki, H, Nakazawa, Y, Ito   +6 more
openaire   +2 more sources

Separation and purification of peptides by high-speed counter-current chromatography

Journal of Chromatography A, 1995
Preparative separations of peptides have been accomplished using high-speed counter-current chromatography. This has been made possible by the use of a particular solvent system that does not exhibit solvent carryover at high speed flow and centrifugation conditions.
M, Knight, M O, Fagarasan, K, Takahashi, A Z, Geblaoui, Y, Ma, Y, Ito   +5 more
openaire   +2 more sources

The applicability of high-speed counter current chromatography to the separation of natural antioxidants

Journal of Chromatography A, 2020
Antioxidants play an essential role in human health, as they have been found to be capable of lowering the incidence of many diseases, such as cancer and angiocardiopathy. Currently, more attention is paid to natural antioxidants because of the possible insecurity of synthetic antioxidants.
Yuan Gong, Xin-Yi Huang, Dong Pei, Wen-Da Duan, Xia Zhang, Xiao Sun, Duo-Long Di   +6 more
openaire   +2 more sources

Separation of rare earth elements by high-speed counter-current chromatography

Journal of Chromatography A, 1991
Besides being widely used in electronic and glass industries, rare earth elements have recently been found to have important biological effects including the ability to stabilize and enhance interferon activity [J.J. Sedmak and S.E. Grossberg, J. Gen. Virol, 52 (1981) 195].
E, Kitazume, M, Bhatnagar, Y, Ito
openaire   +2 more sources

Separation of spiramycin components using high-speed counter-current chromatography

Journal of Chromatography A, 2000
High-speed counter-current chromatography was successfully applied to the separation of the main components of spiramycin. A 25-mg quantity of sample was separated using a two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (3:6:5:5), and the fractions were analyzed by high-performance liquid chromatography and fast atom ...
H, Oka, K, Harada, M, Suzuki, Y, Ito
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Direct coupling of high-speed counter-current chromatography to thin-layer chromatography

Journal of Chromatography A, 1991
The direct coupling of high-speed counter-current chromatography to thin-layer chromatography is proposed as an efficient method for the on-line monitoring of the column effluent.
B. Diallo, R. Vanhaelen-Fastré, M. Vanhaelen   +2 more
openaire   +2 more sources

A review of the hydrodynamics of high-speed counter current chromatography

2023
This review outlines the current understanding of the flow behavior in high-speed counter-current chromatography (HSCCC). HSCCC has seen huge progress in modeling and predicting flow behavior, yet it still is not fully understood from a hydrodynamic perspective.
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