INTRODUCTION

The presence or absence of aromatic aldehydes — sinapic, coniferyl, syringic aldehydes, and vanillin — in a sample, as well as their concentrations and relative proportions, makes it possible to assess the authenticity and quality of brandy and cognac and to detect counterfeits.

The method is used for the determination of the mass concentration of aromatic aldehydes in samples of brandy, cognac and cognac spirits by capillary electrophoresis.

MEASURING METHOD

The measurement method is based on capillary zone electrophoresis. The components are detected by intrinsic absorption at a wavelength of 373 nm.