How to realize the linear scale-up process for rapid purification using high-performance counter-current...

Area of Science:

• Phytochemistry
• Chromatographic Techniques
• Process Chemistry

Background:

• Selaginella tamariscina is a valuable source of bioactive compounds.
• Efficient isolation of these compounds is crucial for further research and application.
• Scaling up chromatographic separation processes can be challenging.

Purpose of the Study:

• To demonstrate a rapid and predictable linear scale-up method for high-performance counter-current chromatography (HPCCC).
• To optimize HPCCC parameters for isolating multiple constituents from Selaginella tamariscina.
• To achieve significantly increased throughput while maintaining compound purity and resolution.

Main Methods:

• Isolation of six constituents from Selaginella tamariscina using HPCCC.
• Systematic optimization of solvent systems, sample concentration, loading volume, rotation speed, and flow rate.
• Direct transfer of optimized parameters from analytical Mini-DE to preparative Midi-DE centrifuges.

Main Results:

• Successful isolation of amentoflavone, robustaflavone, bilobetin, hinokiflavone, isocryptomerin, and an apigenin-diglucoside.
• Achieved nearly identical purities and resolutions with 50 times higher throughput on the preparative scale.
• Quantities and purities of isolated compounds were confirmed by High-Performance Liquid Chromatography (HPLC).

Conclusions:

• The developed linear scale-up process for HPCCC is efficient and rapid.
• This method significantly increases throughput for isolating target compounds.
• The process offers a practical approach for obtaining sufficient quantities of natural products.