Journal Highlight: Qualitative characteristics and comparison of volatile fraction of vodkas made from different botanical materials by comprehensive 2D GC and the electronic nose based on the technology of ultra-fast GC

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  • Published: Mar 20, 2017
  • Author: separationsNOW
  • Channels: Gas Chromatography
thumbnail image: Journal Highlight: Qualitative characteristics and comparison of volatile fraction of vodkas made from different botanical materials by comprehensive 2D GC and the electronic nose based on the technology of ultra-fast GC

GC×GC and an electronic nose-based ultra-fast GC with chemometric analysis have both been used to distinguish between the vodkas produced from different raw materials.

Qualitative characteristics and comparison of volatile fraction of vodkas made from different botanical materials by comprehensive two-dimensional gas chromatography and the electronic nose based on the technology of ultra-fast gas chromatography

Journal of the Science of Food and Agriculture, 2017, 97, 1316-1325
Paulina Wiśniewska, Magdalena Śliwińska, Tomasz Dymerski, Waldemar Wardencki and Jacek Namieśnik

Abstract: Vodka is a spirit-based beverage made from ethyl alcohol of agricultural origin. At present, increasingly more vodka brands have labels that specify the botanical origin of the product. Until now, the techniques for distinguishing between vodkas of different botanical origin have been costly, time-consuming and insufficient for making a distinction between vodka produced from similar raw materials. Therefore, it is of utmost importance to find a fast and relatively inexpensive technique for conducting such tests. In the present study, we employed comprehensive two-dimensional gas chromatography (GC×GC) and an electronic nose based on the technology of ultra-fast GC with chemometric methods such as partial least square discriminant analysis, discriminant function analysis and soft independent modeling of class analogy. Both techniques allow a distinction between the vodkas produced from different raw materials. In the case of GC×GC, the differences between vodkas were more noticeable than in the analysis by electronic nose; however, the electronic nose allowed the significantly faster analysis of vodkas.

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