Rapid quality control of spirit drinks and beer using multivariate data analysis of Fourier transform infrared spectra |
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Authors: | Dirk W. Lachenmeier |
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Affiliation: | Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weißenburger Str. 3, D-76187 Karlsruhe, Germany |
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Abstract: | Fourier Transform Infrared (FTIR) spectroscopy in combination with multivariate data analysis is introduced for the quality control and authenticity assessment of spirit drinks and beer in official food control. The spectra were measured using a FTIR interferometer, which is purpose-built for the analysis of alcoholic beverages and includes an injection unit for liquids with automatic thermostating of the sample. Only 2 min are required for FTIR measurement. For spirit drinks, no sample preparation is required at all. Carbon dioxide containing samples, such as beer were prepared by degassing. |
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Keywords: | Spirit drinks Beer FTIR Chemometrics Multivariate data analysis PLS PCA |
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