Related Experiment Video
Updated: Apr 17, 2026
10:21
Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
Published on: September 21, 2011
45.3K
Overcoming solubility limits in overloaded gradient hydrophobic interaction chromatography
Izabela Poplewska1, Wojciech Piątkowski1, Dorota Antos1
1Department of Chemical and Process Engineering, Rzeszow University of Technology, Rzeszow, Poland.
Journal of Chromatography. A
|February 18, 2015
Summary
This study reveals how protein solubility limits affect gradient chromatography performance. We found that high protein loading is possible even with supersaturation due to slow crystallization kinetics.
Area of Science:
- Biochemistry
- Chemical Engineering
- Chromatography
Background:
- Gradient protein chromatography is crucial for protein separation.
- Understanding solubility limits is key to optimizing chromatographic performance.
- Lysozyme serves as a model protein for studying hydrophobic interaction chromatography.
Purpose of the Study:
- To investigate the impact of solubility limits on gradient protein chromatography.
- To analyze the influence of mobile phase composition on protein solubility and crystallization.
- To develop and apply a dynamic model for chromatographic column behavior.
Main Methods:
- Elution of lysozyme on hydrophobic interaction media.
- Quantification of protein adsorption and solubility dependence on mobile phase composition.
- Development of a chromatographic column dynamics model incorporating adsorption and crystallization kinetics.
Main Results:
- Protein solubility and crystallization kinetics are dependent on cosmotropic salt concentration.
- A model demonstrated the influence of flow rate and loading concentration on solubility and separation.
- Supersaturation regions allow for high concentration overloading without flow blockage due to slow crystallization.
Conclusions:
- Solubility limits significantly impact gradient protein chromatography.
- Chromatographic processes can be optimized by leveraging supersaturation and slow crystallization kinetics.
- The developed model provides insights into operating parameter effects on column performance.
More Related Videos
11:25Multi-step Preparation Technique to Recover Multiple Metabolite Compound Classes for In-depth and Informative Metabolomic Analysis
Published on: July 11, 2014
35.3K
13:36Simple In-House Ultra-High Performance Capillary Column Manufacturing with the FlashPack Approach
Published on: December 4, 2021
4.8K
Related Concept Videos
01:05High-Performance Liquid Chromatography: Elution Process
2.1K
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
2.1K
01:09Ion-Exchange Chromatography
3.1K
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
3.1K
01:15Optimizing Chromatographic Separations
1.4K
Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
1.4K
01:11High-Performance Liquid Chromatography: Introduction
4.3K
High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
In HPLC, two phases play a critical role in the separation process:
4.3K
01:08Size-Exclusion Chromatography
2.8K
In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
Silica particles offer advantages such as rigidity,...
Silica particles offer advantages such as rigidity,...
2.8K
01:13Principles Of Column Chromatography
10.1K
The chromatography technique was first invented in 1901 by Michael S. Tswett, a Russian botanist, to separate plant pigments using organic solvents. Further, in 1941, Archer John Porter Martin and R. L. M. Synge modified the technique by packing silica gel into a column. A mixture of amino acids was then separated on the packed column using chloroform and water mixture as the mobile phase. This was the first report on column chromatography. At present, column chromatography is a widely used...
10.1K