Article,

Fast determination of conditions for maximum dynamic capacity in cation-exchange chromatography of human monoclonal antibodies

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Journal of Chromatography A, 1161 (1-2): 29--35 (2007)
DOI: 10.1016/j.chroma.2007.03.114

Abstract

Dynamic binding capacity (DBC) measurements of cation-exchange resins were performed with two human monoclonal antibodies. DBC showed a pH dependent maximum, which was shifted to lower pH values with increasing buffer concentrations and increasing salting-out effect of the buffer anion according to the Hofmeister series. As this downshift correlates well with zeta potential values, a measurement of the latter allows the determination of the pH value for maximum DBC under a given set of conditions. Thus, the use of zeta potential values can accelerate the purification process development and helps to understand the protein adsorption mechanism. © 2007 Elsevier B.V. All rights reserved.

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