0162454 - UIACH-O 20033017 RIV NL eng J - Journal Article
Karásek, Pavel - Planeta, Josef - Varaďová-Ostrá, Elena - Mikešová, Milena - Goliáš, J. - Roth, Michal - Vejrosta, Jiří
Direct continuous supercritical fluid extraction as a novel method of wine analysis. Comparison with conventional indirect extraction and implications for wine variety identification.
Journal of Chromatography A. Roč. 1002, 1-2 (2003), s. 13-23. ISSN 0021-9673. E-ISSN 1873-3778
R&D Projects: GA ČR GA525/99/1570; GA AV ČR IBS4031110
Institutional research plan: CEZ:AV0Z4031919
Keywords : supercritical fluid extraction * wine analysis * multivariate statistics
Subject RIV: CB - Analytical Chemistry, Separation
Impact factor: 2.922, year: 2003

Direct supercritical fluid extraction (SFE) of wines with carbon dioxide was compared to SFE of the sorbent used for solid-phase extraction of the same wine samples (SPE-SFE). Compared to SPE-SFE, the direct SFE results in a more specific and representative gas chromatographic fingerprint of the wine sample. The multivariate statistical processing of the direct SFE-GC data provides a clear-cut and sharp discrimination among the individual wine varieties while the discrimination based on the SPE-SFE-GC data is relatively poor. This finding reflects the adverse effects of additional analytesorbent interactions and sorption/desorption steps involved in SPE-SFE.
Permanent Link: http://hdl.handle.net/11104/0059769