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Comprehensive two-dimensional countercurrent chromatography × gas chromatography characterization of Artemisia argyi essential oil.

Analytica Chimica Acta, 2022
A comprehensive two-dimensional (2D) countercurrent chromatography (CCC) × gas chromatography (GC) was investigated for characterization of chemical constituents of Artemisia argyi essential oil, and orthogonality for the 2D chromatographic system was ...
Weiyi Wen   +6 more
semanticscholar   +1 more source

Overview of Solvent System Selection Strategies for Countercurrent Chromatography

Separation & Purification Reviews, 2022
Countercurrent Chromatography (CCC), a form of liquid–liquid chromatography, is an efficient preparative purification technique used for purifying active natural compounds, specifically those present in plants.
Tian Han   +3 more
semanticscholar   +1 more source

A Strategy for Pinpointing Natural Bioactive Components Using Two-Dimensional Bioassay Profilings Combined with Comprehensive Two-Dimensional Countercurrent Chromatography × High-Performance Liquid Chromatography.

Analytical Chemistry, 2022
Inspired by the interpretation of two-dimensional (2D) nuclear magnetic resonance spectra, an efficient strategy was proposed for pinpointing bioactive components from complex natural products. An off-line comprehensive countercurrent chromatography (CCC)
Ping Xu   +6 more
semanticscholar   +1 more source

Relayed chromatography - Countercurrent chromatography in series with liquid chromatography for the separation of natural products.

Journal of Chromatography A, 2022
Chromatography is an essential method for separating natural products. In this study, we proposed the concept of 'relayed chromatography', based on the strategy of combining different chromatography with relayed resolution by in-situ concentration ...
Jiao Huang, Jian-Ming He, Qing Mu
semanticscholar   +1 more source

Bioassay-guided separation and identification of the anticancer composition from Curcuma longa L. by the combination strategy of methanol gradient countercurrent chromatography and ultrahigh-performance liquid chromatography coupled with high-resolution mass spectrometry.

Journal of Separation Science, 2022
In this study, a combined strategy with methanol gradient countercurrent chromatography and UHPLC coupled with high-resolution MS was introduced for the fractionation and identification of active constituents from Curcuma longa L..
Lan-Jie Li   +7 more
semanticscholar   +1 more source

Droplet Countercurrent Chromatography

Science, 1970
A new form of countercurrent chromatography, named droplet countercurrent chromatography, has been developed. This all-liquid separation technique is based on the partitioning of solute between a steady stream of droplets of moving phase and a column of surrounding stationary liquid phase.
T, Tanimura   +3 more
openaire   +2 more sources

Countercurrent chromatography approach to palladium and platinum separation using aqueous biphasic system.

Journal of Chromatography A, 2021
For the first time, widespread aqueous biphasic polymer-salt extraction system was applied for selective separation of Pd(II) and Pt(IV) from chloride technological solutions by countercurrent chromatography using a rotating coiled column (an analog of ...
O. Mokhodoeva   +3 more
semanticscholar   +1 more source

Solvent strength of aqueous phase for two typical biphasic solvent systems in high-speed countercurrent chromatography.

Journal of Chromatography A, 2021
In the present work, influence of solvent strength of aqueous phase for two frequently-used biphasic solvent system in partition coefficient (K) of selected solutes were mainly studied, and a new method for selection of biphasic solvent system was ...
Tingting Lin   +5 more
semanticscholar   +1 more source

Preparative separation of structural isomeric pentacyclic triterpenes from Eriobotrya japonica (Thunb.) leaves by high speed countercurrent chromatography with hydroxypropyl-β-cyclodextrin as additive.

Journal of Chromatography A, 2021
Maslinic acid and corosolic acid with high purity were successfully separated from Eriobotrya japonica (Thunb.) leaves by two-step countercurrent chromatographic separation.
Honglei Bao   +7 more
semanticscholar   +1 more source

Computer aided experimentation in countercurrent reaction chromatography and simulated countercurrent chromatography

Chemical Engineering Science, 1988
Abstract A continuous countercurrent moving bed chromatographic reactor, and a simulated countercurrent moving bed apparatus have been interfaced with a laboratory microcomputer for data acquisition and computer control. Simulation of a countercurrent moving bed is accomplished by switching a feedstream sequentially through a series of columns ...
Barry B. Fish   +2 more
openaire   +1 more source

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