Multilayer coil planet centrifuge for analytical high-speed counter-current chromatography

Area of Science:

• Analytical Chemistry
• Chromatography
• Separation Science

Background:

• High-speed counter-current chromatography (HSCCC) is a liquid-liquid partition chromatography technique.
• Efficient separation of complex natural product mixtures requires advanced chromatographic methods.
• Development of portable and rapid analytical separation systems is crucial for diverse applications.

Purpose of the Study:

• To develop and evaluate a compact, portable model of a high-speed counter-current chromatograph.
• To optimize experimental conditions for efficient analytical separations of microgram sample quantities.
• To demonstrate the apparatus's capability in separating bioactive compounds from a natural extract.

Main Methods:

• Design and construction of a compact, portable HSCCC system with short coils and variable helical diameters.
• Systematic study of stationary phase retention for various two-phase solvent systems.
• Optimization of experimental parameters including solvent systems and coil geometry.
• Separation of flavonoids from a crude sea buckthorn (Hippophae rhamnoides) ethanol extract using the optimized HSCCC system.

Main Results:

• The compact HSCCC model enabled efficient analytical separations of microgram sample quantities within 10 minutes.
• Optimal experimental conditions were determined for stationary phase retention in short coils.
• Successful separation of flavonoids from a complex sea buckthorn extract was achieved in an 8 ml multilayer coil.

Conclusions:

• A compact and portable HSCCC system offers efficient and rapid analytical separation capabilities.
• The developed HSCCC model is suitable for the analysis of microgram quantities of complex mixtures, including natural products.
• This technology holds promise for on-site or field analysis of bioactive compounds.