In situ modification of chromatography adsorbents using cold atmospheric pressure plasmas

P. Olszewski, T. C. Willett, E. Theodosiou, O. R T Thomas*, J. L. Walsh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Efficient manufacturing of increasingly sophisticated biopharmaceuticals requires the development of new breeds of chromatographic materials featuring two or more layers, with each layer affording different functions. This letter reports the in situ modification of a commercial beaded anion exchange adsorbent using atmospheric pressure plasma generated within gas bubbles. The results show that exposure to He-O2 plasma in this way yields significant reductions in the surface binding of plasmid DNA to the adsorbent exterior, with minimal loss of core protein binding capacity; thus, a bi-layered chromatography material exhibiting both size excluding and anion exchange functionalities within the same bead is produced.

Original languageEnglish
Article number204104
JournalApplied Physics Letters
Issue number20
Early online date20 May 2013
Publication statusPublished - 20 May 2013

Bibliographical note

© 2013 AIP Publishing LLC.

Funding: Biotechnology and Biological Sciences Research Council/Bioprocessing Research Industry Club (BRIC) programme (Grant No. BB/F004982/1), and the Engineering and Physical Sciences Research Council (Grant No. EP/J005894/1).


  • Chromatography Plasma materials processing Proteins Atmospheric pressure plasma Atmospheric temperature


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