Summary
Capillary zone electrophoresis has been developed for the separation of seed albumins fromVicia faba using both uncoated and polyoxyethylene ether (Brij-35) coated octadecysilane derivatized capillaries. Optimal separation conditions were found by studying the effect of pH, buffer composition and applied voltage. The nonionic surfactant/C18 coated capillary significantly reduced albumin adsorption and electroosmotic flow (EOF). A gradual washing out of the surfactant from the coated capillary during use altered not only the magnitude of the EOF, but also its reproducibility. The introduction of hydrophilic polymer solutions between analyses for dynamic modification of the Brij/C18 coated capillary surface prevented desorption of coating material, allowed optimization of resolution and ensured stability of the EOF. CE with surface-modified capillaries was then used to compare seed albumin profiles of severalVicia species. This technique appears to provide a powerful tool for use in taxonomic investigations.
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Salmanowicz, B.P. Capillary electrophoresis of seed albumins fromVicia species using uncoated and surface-modified fused silica capillaries. Chromatographia 41, 99–106 (1995). https://doi.org/10.1007/BF02688007
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DOI: https://doi.org/10.1007/BF02688007