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Related Concept Videos

Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
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Gas Chromatography–Mass Spectrometry (GC–MS)01:14

Gas Chromatography–Mass Spectrometry (GC–MS)

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Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
10:21

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Published on: September 21, 2011

Multifraction separation in countercurrent chromatography (MCSGP).

Martin Krättli1, Thomas Müller-Späth, Massimo Morbidelli

  • 1Institute for Chemical and Bioengineering, ETH Zurich, Wolfgang-Pauli-Str. 10, Zurich, Switzerland.

Biotechnology and Bioengineering
|March 23, 2013
PubMed
Summary
This summary is machine-generated.

The multicolumn countercurrent solvent gradient purification (MCSGP) process was extended to isolate multiple fractions from complex mixtures. This enhanced chromatography method significantly improves yield and purity compared to traditional batch methods for protein and monoclonal antibody purification.

Keywords:
MCSGPcontinuous chromatographyfour-fraction separationmonoclonal antibodyprotein purification

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Area of Science:

  • Chromatography
  • Bioseparation
  • Process Chemistry

Background:

  • Multicomponent mixtures require efficient separation techniques.
  • Traditional batch chromatography often yields suboptimal results for complex separations.
  • Continuous chromatography offers potential for improved efficiency.

Purpose of the Study:

  • To extend the multicolumn countercurrent solvent gradient purification (MCSGP) process for multifraction separations.
  • To demonstrate the capability of an n-column MCSGP unit for isolating multiple intermediate products.
  • To compare the performance of the enhanced MCSGP process against batch chromatography.

Main Methods:

  • Modification of the standard MCSGP process by adding separation sections (columns) for each additional fraction.
  • Experimental validation using a four-fraction MCSGP unit.
  • Separation of a model mixture of four proteins and charge variants of mAb Cetuximab.

Main Results:

  • Successful purification of two intermediate proteins from a four-component mixture with high yields (95%, 92%) and purities (94%, 97%).
  • Purification of two charge variants of mAb Cetuximab with yields (81%, 65%) and purities (90%, 89%).
  • Demonstrated superior performance over batch chromatography in terms of yield for equivalent purity levels.

Conclusions:

  • The extended MCSGP process enables the separation of an unlimited number of fractions.
  • This advanced chromatography technique offers significant improvements in yield and purity for complex biopharmaceutical separations.
  • The MCSGP process is a powerful tool for purifying intermediate products and complex mixtures.