MICELLAR ELECTROKINETIC CHROMATOGRAPHY AS AN ALTERNATIVE TO HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY FOR SEPARATION AND DETERMINATION OF PHENOLIC-COMPOUNDS IN JAPANESE SPIRITUOUS LIQUOR

A capillary electrophoretic method has been developed for the separati on and determination of vanillin, ferulic acid, vanillic acid and 4-vi nylguaiacol in Japanese spirituous liquor. These phenolic compounds we re extracted from Japanese spirituous liquor by solid-phase extraction and were successfully separated by micellar electrokinetic chromatogr aphy (MEKC) with 25 mM sodium dodecyl sulfate. MEKC required short ana lysis times and it could be an alternative technique for the analysis of vanillin, ferulic acid, vanillic acid and 4-vinylguaiacol in Japane se spirituous liquor. These phenolic compounds in five Japanese spirit uous liquor samples were determined by this method. No significant dif ference in separation patterns and amounts was observed among the repe ated analysis. (C) 1998 Elsevier Science B.V.