Wiśniewska Paulina, Śliwińska Magdalena, Dymerski Tomasz, Wardencki Waldemar, Namieśnik Jacek
Department of Analytical Chemistry, The Chemical Faculty, Gdansk University of Technology, 11/12 Narutowicza St, Gdansk, 80-233, Poland.
J Sci Food Agric. 2017 Mar;97(4):1316-1325. doi: 10.1002/jsfa.7868. Epub 2016 Jul 28.
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. © 2016 Society of Chemical Industry.
伏特加是一种以烈酒为基酒的饮品，由源自农产品的乙醇制成。目前，越来越多的伏特加品牌在标签上标明了产品的植物来源。到目前为止，区分不同植物来源伏特加的技术成本高昂、耗时且不足以区分由相似原材料生产的伏特加。因此，找到一种快速且相对便宜的技术来进行此类测试至关重要。
在本研究中，我们采用了全二维气相色谱法（GC×GC）以及基于超快速气相色谱技术的电子鼻，并结合了化学计量学方法，如偏最小二乘判别分析、判别函数分析和类软独立建模。
两种技术都能够区分由不同原材料生产的伏特加。就GC×GC而言，伏特加之间的差异比电子鼻分析中更为明显；然而，电子鼻能够显著更快地分析伏特加。© 2016化学工业协会。
