engleski

Isolation of white wine volatiles using different sample preparation methods

Three sample preparation methods for gas chromatographic analysis of white wine volatiles were tested. In order to find an adequate replacement for common liquid-liquid extraction using 1, 1, 1-trichlorofluoromethan, head-space solid-phase microextraction (HS-SPME) and stir bar sorptive extraction (SBSE) were tested. SPME and SBSE sample preparations are characterized by rapid and easy handling, small sample size and the possibility of automatisation but the recovery of aroma compounds is restricted because of the discrimination properties of the polymer phase. Unlike SPME, the results obtained by SBSE are more similar to the results of liquid-liquid extraction.

white wine; aroma; liquid-liquid extraction; stir bar sorptive extraction; SBSE; solid-phase microextraction; SPME

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