DETERMINATION OF ACIDS AND VOLATILE COMPOUNDS IN RED TXAKOLI WINE BY HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY AND GAS-CHROMATOGRAPHY

The Txakoli is a wine from the north of Spain with acid characteristic s and medium ethanol content. We report the comparative results obtain ed from red Txakoli elaborated with different grape varieties. We have used chromatographic methods for the characterization of this wine. T he volatile compounds were analyzed by means of gas chromatography and the organic acid content was determined by a newly validated liquid c hromatographic procedure. The aim of this study is to characterize the red Txakoli and to know the major differences between Hondarrabi Belt za grape variety and the other varieties, Hondarrabi Beltza grape vari ety is the one which was awarded the Generic Label. The major differen ces observed in the samples obtained from Hondarrabi Beltza variety ar e their higher contents in ethanol, propanol, ethyl acetate and tartar ic and malic acids. (C) 1998 Elsevier Science BV. All rights reserved.