The effect of mobile phase on protein retention and recovery using carboxymethyl dextran-coated zirconia stationary phases

C. J. Dunlap, Peter W Carr

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We have examined the effect of mobile phase conditions on the elution and recovery of proteins from a carboxymethyl dextran coated zirconia stationary phase. Mobile phases containing the Lewis bases phosphate and fluoride were examined as a function of concentration. We found that proteins only eluted from the stationary phase when some minimum concentration of Lewis base was present in the mobile phase. The effect of ionic strength was also examined. We found that a fairly high ionic strength is needed to elute the proteins with good recovery. The concentrations of the Lewis bases and the ionic strength needed to elute the proteins depended on the identity of the protein and the Lewis base. The pH of the mobile phase also plays a role; when the pH of the system is below the isoelectric point of a protein, it is difficult to elute that protein.

Original languageEnglish (US)
Pages (from-to)2059-2076
Number of pages18
JournalJournal of Liquid Chromatography and Related Technologies
Volume19
Issue number13
DOIs
StatePublished - 1996

Bibliographical note

Funding Information:
This work was performed with the financial support of the National Institutes of Health.

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