Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, 76187 Karlsruhe, Germany.
Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, 76187 Karlsruhe, Germany; Institute of Organic Chemistry and Institute for Biological Interfaces 4 - Magnetic Resonance, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
Food Chem. 2018 Apr 15;245:112-118. doi: 10.1016/j.foodchem.2017.10.065. Epub 2017 Oct 12.
Beverage fraud involving counterfeiting of brand spirits is an increasing problem not only due to deception of the consumer but also because it poses health risks e.g. from possible methanol admixture. Suspicious spirit samples from Russia and Kenya were analysed using H nuclear magnetic resonance (NMR) spectroscopy in comparison to authentic products. Using linear regression analysis of spectral integral values, 4 counterfeited samples from Russia and 2 from Kenya were easily identifiable with R < 0.7. Sensory analysis using triangle test methodology confirmed significant taste differences between counterfeited and authentic samples but the assessors were unable to correctly identify the counterfeited product in the majority of cases. An important conclusion is that consumers cannot assumed to be self-responsible when consuming counterfeit alcohol because there is no general ability to organoleptically detect counterfeit alcohol.
饮料造假涉及假冒品牌烈酒，这不仅是一个日益严重的问题，因为它不仅欺骗了消费者，还因为它存在健康风险，例如可能混入甲醇。使用 H 核磁共振（NMR）光谱法对来自俄罗斯和肯尼亚的可疑烈酒样品进行分析，并与真品进行比较。通过对光谱积分值的线性回归分析，很容易识别出来自俄罗斯的 4 个假冒样品和来自肯尼亚的 2 个假冒样品，R 值<0.7。使用三角测试方法的感官分析证实，假冒和真品样品之间存在明显的味道差异，但评估员在大多数情况下无法正确识别假冒产品。一个重要的结论是，消费者在饮用假冒酒精时不能假定自己有自我责任，因为他们没有普遍的能力通过感官检测来识别假冒酒精。
