SIMULTANEOUS DETERMINATION OF CARBOHYDRATES AND ORGANIC-ACIDS IN BEERAND WINE BY ION CHROMATOGRAPHY

The simultaneous determination of mono-organic acids and carbohydrates by ion chromatography with both conductometric and pulsed amperometri c detection is described. The carbohydrates, such as mannitol, arabino se, glucose, fructose, lactose, sucrose, raffinose, and maltose, as we ll as mono-organic acids including acetate, glycolate, formate, pyruva te, and fluoride are separated as anions by ion-exchange chromatograph y with 0.080 mol/L sodium hydroxide eluent at 1 mL/min within 12 min. Carbohydrates are determined by pulsed amperometric detection and mono -organic acids are determined by suppressed conductivity detection. Th e species in beverages are determined.