Australian researchers used mid-infrared (MIR) spectroscopy coupled with attenuated total reflectance (ATR), and applied multivariate analysis, to analyse a series of different beer types in order to confirm their identity (e.g. ale vs lager, commercial vs craft beer). Correct classification rates of 100% were achieved in order to differentiate between ale and lager and also between commercial and craft beer sample types, respectively.  Furthermore, dissolved gases in the beer products were proven not to interfere as overlapping artefacts in the analysis. The benefits of using MIR-ATR for rapid and detailed analysis coupled with multivariate analysis can be considered a valuable tool for researchers and brewers interested in quality control, traceability and food authenticity.

             Read the abstract at: MIR-ATR of Beer

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