Detection of counterfeit brand spirits using 1 H NMR fingerprints in comparison to sensory analysis.

Autor: Kuballa T; Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, 76187 Karlsruhe, Germany. Electronic address: thomas.kuballa@cvuaka.bwl.de., Hausler T; 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. Electronic address: thomas.hausler@web.de., Okaru AO; Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, 76187 Karlsruhe, Germany; Department of Pharmaceutical Chemistry, University of Nairobi, P.O. Box 19676-00202, Nairobi, Kenya. Electronic address: alex.okaru@gmail.com., Neufeld M; Centre for Addiction and Mental Health, 33 Russell Street, ARF 2035, Toronto, ON M5S 2S1, Canada. Electronic address: neufeld.maria@googlemail.com., Abuga KO; Department of Pharmaceutical Chemistry, University of Nairobi, P.O. Box 19676-00202, Nairobi, Kenya. Electronic address: koabuga@uonbi.ac.ke., Kibwage IO; Department of Pharmaceutical Chemistry, University of Nairobi, P.O. Box 19676-00202, Nairobi, Kenya. Electronic address: okibwage@uonbi.ac.ke., Rehm J; Centre for Addiction and Mental Health, 33 Russell Street, ARF 2035, Toronto, ON M5S 2S1, Canada; Clinical Psychology and Psychotherapy, Technische Universität Dresden, Chemnitzer Strasse 46, 01187 Dresden, Germany. Electronic address: jtrehm@gmail.com., Luy B; Institute of Organic Chemistry and Institute for Biological Interfaces 4 - Magnetic Resonance, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany. Electronic address: burkhard.luy@kit.edu., Walch SG; Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, 76187 Karlsruhe, Germany. Electronic address: stephan.walch@cvuaka.bwl.de., Lachenmeier DW; Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, 76187 Karlsruhe, Germany; Clinical Psychology and Psychotherapy, Technische Universität Dresden, Chemnitzer Strasse 46, 01187 Dresden, Germany. Electronic address: lachenmeier@web.de.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2018 Apr 15; Vol. 245, pp. 112-118. Date of Electronic Publication: 2017 Oct 12.
DOI: 10.1016/j.foodchem.2017.10.065
Abstrakt: 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 1 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 2  < 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.
(Copyright © 2017 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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