Chromatography of microbial cells using continuous supermacroporous affinity and ion-exchange columns

Pär Arvidsson, Fatima Plieva, Irina Savina, VI Lozinsky, Sara Fexby, Leif Bülow, Igor Galaev, Bo Mattiasson

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216 Citations (SciVal)


Continuous supermacroporous chromatographic columns with anion-exchange ligands [2-(dimethylanlino)ethyl group] and immobilized metal affinity (IMA) ligands (Cu2+-loaded iminodiacetic acid) have been developed allowing binding of Escherichia coli cells and the elution of bound cells with high recoveries. These poly(acrylamide)-based continuous supermacroporous columns have been produced by radical co-polymerization of monomers in aqueous solution frozen inside a column (cryo-polymerization). After thawing, the column contains a continuous matrix (so-called cryogel) with interconnected pores of 10-100 mum in size. The large pore size of the matrix makes it possible for E. coli cells to pass unhindered through a plain column containing no ligands. E. coli cells bound to an ion-exchange column at low ionic strength were eluted with 70-80% recovery at NaCl concentrations of 0.35-0.40 M, while cells bound to an IMA-column were eluted with around 80% recovery using either 10 mM imidazole or 20 mM EDTA solutions, respectively. The cells maintain their viability after the binding/elution procedure. These preliminary results indicate that microbial cells can be handled in a chromatographic mode using supermacroporous continuous columns. These columns are easy to manufacture from cheap and readily available starting materials, which make the columns suitable for single-time use. (C) 2002 Published by Elsevier Science B.V.
Original languageEnglish
Pages (from-to)27-38
JournalJournal of Chromatography A
Issue number1
Publication statusPublished - 2002

Subject classification (UKÄ)

  • Industrial Biotechnology
  • Biochemistry and Molecular Biology


  • metal affinity chromatography
  • immobilized
  • ion-exchange chromatography
  • cells
  • LC
  • stationary phases
  • bacteria
  • proteins


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