5-Hydroxymethylfurfural content in foodstuffs determined by micellar electrokinetic chromatography

5-Hydroxymethylfurfural content in foodstuffs determined by micellar electrokinetic chromatography.

Micellar electrokinetic chromatography (MEKC) has been applied for the determination of 5-hydroxymethylfurfural in several foodstuffs. A 75mM phosphate buffer solution at pH 8.0 containing 100mM sodium dodecylsulphate was used as background electrolyte (BGE), and the separation was performed by applying +25kV in a 50μm I.D. uncoated fused-silica capillary. Good linearity over the range 2.5-250m...

Micellar electrokinetic chromatography.

Retention indices in micellar electrokinetic chromatography

The use o f retent ion indices in mice l la r electrokinet ic ch roma tog raphy ( M E K C ) is eva lua ted both f rom a theoretical and a practical point o f view. F undamen t a l equa t ions for the de te rmina t ion o f retent ion indices in M E K C are descr ibed, showing that re tent ion indices are independen t o f the surfac tant concentra t ion. Possibi l i t ies as well as l imita t ion...

Separation of preservatives in cosmetic products by micellar electrokinetic chromatography.

This paper describes the methodological optimization and validation of a simple micellar electrokinetic chromatography for the rapid simultaneous separation of 2-methyl-4-isothiazolin-3-one, methylparaben, ethylparaben, propylparaben, and butylparaben. By using a 30 mM phosphate buffer (pH 7.2) containing 30 mM sodium dodecyl sulfate (SDS), an applied voltage of 10 kV and a separation temperatu...

Twenty-five years of micellar electrokinetic chromatography

Micellar electrokinetic chromatography (MEKC), which can separate neutral analytes as well as charged analytes by the capillary electrophoretic technique, was developed in 1982 and the first paper was published in 1984. The authors’ group concentrated their effort into the characterization of MEKC as a separation technique until early 1990s. Most issues in MEKC separations were successfully sol...