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  • Title: Hydrophobic interaction chromatography of peptides as an alternative to reversed-phase chromatography.
    Author: Alpert AJ.
    Journal: J Chromatogr; 1988 Jul 01; 444():269-74. PubMed ID: 3204135.
    Abstract:
    Hydrophobic interaction chromatography (HIC) was examined as an alternative to reversed-phase chromatography (RPC) for peptide separations by high-performance liquid chromatography. With small peptides, selectivity was similar in both modes. This was the case with commercially available standards and with a set of synthetic peptides having the same amino acid composition but different sequences. Column efficiency was higher in RPC. HIC possesses several other disadvantages, including significant baseline changes during gradient elution and a requirement for non-volatile mobile phases, which complicates peptide isolation. Thus, RPC is still the method of choice for most small peptides. Marked differences in selectivity were noted with small proteins and polypeptides large enough to possess tertiary structure. Good results were also obtained by HIC in the case of some peptides that could not be purified at all by RPC, due to aggregation or poor binding or recovery. Thus, in these cases, HIC is a useful alternative to RPC for peptide purification.
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