Kong, DYC;
Gerontas, S;
Mccluckie, RA;
Mewies, M;
Gruber, D;
Titchener-Hooker, NJ;
(2017)
Effects of bed compression on protein separation on gel filtration chromatography at bench and pilot scale.
Journal of Chemical Technology and Biotechnology
10.1002/jctb.5411.
(In press).
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Abstract
BACKGROUND: Poorly packed chromatography columns are known to reduce drastically the column efficiency and produce broader peaks. Controlled bed compression has been suggested to be a useful approach for solving this problem. Here the relationship between column efficiency and resolution of protein separation are examined when preparative chromatography media were compressed using mechanical and hydrodynamic methods. Sepharose CL-6B, an agarose based size exclusion media was examined at bench and pilot scale. The asymmetry and height equivalent of a theoretical plate (HETP) was determined by using 2% v/v acetone, whereas the void volume and intraparticle porosity (ε p ) were estimated by using blue dextran. A protein mixture of ovalbumin (chicken), bovine serum albumin (BSA) and γ'- globulin (bovine) with molecular weights of 44, 67 and 158 kDa, respectively, were used as a 'model' separation challenge. RESULTS: Mechanical compression achieved a reduction in plate height for the column with a concomitant improvement in asymmetry. Furthermore, the theoretical plate height decreased significantly with mechanical compression resulting in a 40% improvement in purity compared with uncompressed columns at the most extreme conditions of compression used. CONCLUSION: The results suggest that the mechanical bed compression of Sepharose CL-6B can be used to improve the resolution of protein separation.
| Type: | Article |
|---|---|
| Title: | Effects of bed compression on protein separation on gel filtration chromatography at bench and pilot scale |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/jctb.5411 |
| Publisher version: | http://doi.org/10.1002/jctb.5411 |
| Language: | English |
| Additional information: | © 2017 The Authors. Journal of Chemical Technology & Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Bed compression; size exclusion chromatography; Sepharose CL-6B; HETP; preparative chromatography; protein separation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10036559 |
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