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Comparison of two extraction methods for evaluation of volatile constituents patterns in commercial whiskeys Elucidation of the main odour-active compounds

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Academic year: 2018

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Fig. 1. Comparison of the extraction efficiency for different chemical families by LLE method using CH 2 Cl 2 and H (But: butanoic acid; Isobut: 3-methylbutanoic acid;
Fig. 3. Comparison of TIC chromatograms of the volatile fraction extracted/isolated from BL whiskey sample obtained by LLE method using CH 2 Cl 2 as extraction solvent (LLE CH 2 Cl 2 ) and by dynamic HS-SPME using a 75␮m CAR/PDMS fibre coating (HS-SPME CAR
Fig. 4. Proportion of the chromatographic profile between LLE CH 2 Cl 2 and SPME CAR/PDMS methods for analysis of different chemical classes and specific compounds determined in BL whiskey (DCM: CH 2 Cl 2 ; EO: ethyl octaoate; ED: ethyl decanoate; EDODEC:
Fig. 6. PC1 vs. PC2 scatter plot of the main sources of variability between different whiskeys: (A) distinction between the samples (scores) and (B) relation between the 22 volatile compounds (loading)

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