title: Enantiomeric distribution of major chiral volatile organic compounds in juniper-flavored distillates.
abstract: The enantiomeric ratios of chiral volatile organic compounds in juniper-flavored spirits produced by various processing technologies in different EU countries were determined by multidimensional GC using solid-phase microextraction and liquid-liquid extraction as a sample pretreatment procedure. In total, more than 260 compounds were detected in studied spirits from which linalool, α-terpineol, 4-terpineol, linalool oxides, α-pinene, and verbenone were selected for enantiomeric separation. The significant differences in enantiomeric ratio of linalool and cis-linalool oxide allowed us to distinguish between samples produced in Slovakia and the United Kingdom from those produced in Germany, Czech Republic, and Belgium. The pure enantiomer of trans-linalool oxide was found only in samples from Germany. It was shown that the enantiomeric ratio is independent of the sample treatment procedure, and only small differences up to 1% were observed.
authors: Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic.
authors: Alexandra
authors: A
authors: Pažitná
authors: Ivan
authors: I
authors: Spánik
mesh_terms: D002849:Chromatography, Gas; D018653:Juniperus / Q000737:chemistry*; D059625:Liquid-Liquid Extraction; D010936:Plant Extracts / Q000737:chemistry; D052617:Solid Phase Microextraction; D013237:Stereoisomerism; D055549:Volatile Organic Compounds / Q000737:chemistry*
chemical_list: D010936:Plant Extracts; D055549:Volatile Organic Compounds
keywords: Cyclodextrin derivatives; Enantiomeric separation; Enantioselective GC; Juniper-flavored distillates; Multidimensional GC