Abstract
Prolidase deficiency is a severe disorder characterized by massive excretion of metabolites with closely related structures. At present, micellar electrokinetic chromatography is the separation method which provides the highest selectivity of structurally similar solutes. However, the structure of a surfactant can greatly affect the selectivity of separation depending on factors such as the length of hydrophobic alkyl chain or the nature of the hydrophilic group. Here we investigated the effect of three non-ionic and four anionic detergents for obtaining the best separation conditions for resolving imidodipeptide mixtures. The effect on resolution of variables such as temperature, surfactant concentrations and organic solvents was also examined. The greatest resolution was obtained at the lowest temperature studied (10°C) using 50 m M sodium borate, pH 9.3 containing 50 m M pentanesulfonate and 10% (v/v) methanol. Under these experimental conditions almost all excreted components were baseline separated and identified.
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