Bioprocess and Biosystems Engineering

, Volume 26, Issue 4, pp 271–282 | Cite as

Addressing a whole bioprocess in real-time using an optical biosensor-formation, recovery and purification of antibody fragments from a recombinant E. coli host

Original Paper


The use of biosensor technology is described to address in real-time the production and subsequent purification of a bioactive recombinant protein product. The product, D1.3 Fv antibody fragment, was expressed in Escherichia coli and purified via two process routes, one for extracellular and one for intracellular product material. The cells were harvested by centrifugation in a solid bowl CARR Powerfuge and stored at −70°C. Clarification of the supernatant was performed by depth filtration, followed by affinity chromatography for final purification of the extracellular product. To purify the intracellular product the harvested cells were resuspended and homogenised. Removal of debris in the CARR Powerfuge was followed by depth filtration and affinity chromatography. In this work we have shown the rapid determination of bioactive product levels, and the impact this has on improved accountability and confidence is demonstrated in process mass balances on the product using the data acquired during process operation.


Bioprocess monitoring Biosensor Antibody fragments Rapid monitoring 



The support by the Engineering and Physical Sciences Research Council (EPSRC) for the Innovative Manufacturing Research Centre (IMRC) for Bioprocessing is gratefully acknowledged. The IMRC is part of the Advanced Centre for Biochemical Engineering at UCL, and the support of the collaborating companies is also gratefully acknowledged.


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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.IMRC for Bioprocessing, The Advanced Centre for Biochemical EngineeringDepartment of Biochemical Engineering, University College LondonLondonUK

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