CAPILLARY ZONE ELECTROPHORESIS OF PYRIDYLAMINO DERIVATIVES OF MALTOOLIGOSACCHARIDES

Maltooligosaccharides derivatized with 2-aminopyridine were separated by capillary zone electrophoresis in the pH range 3.0-4.5 using 0.1 M phosphate solutions as the running electrolyte. The inclusion of small amounts of tetrabutylammonium bromide in the electrolyte solution facilitated the separation at pH 5.0 and yielded high separation efficiency. The separated zones of pyridylamino derivatives of maltooligosaccharides migrated across the fused-silica capillary and passed the detection point in the order of increasing size. The "overall mobility" was a linear function of the number of glucose residues in the homologous series. © 1990.