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9 May 2012 Diffuse-light absorption spectroscopy for beer classification and prediction of alcoholic content
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Abstract
A miscellaneous of 86 beers was characterized by non-destructive, fast and reagent-free optical measurements. Diffuselight absorption spectroscopy performed in the visible and near-infrared bands was used to gather a turbidity-free spectroscopic information. Also, conventional turbidity and refractive index measurements were added for completing the optical characterization. The near-infrared spectra provided a straightforward turbidity-free assessment of the alcoholic strength. Then, the entire optical data set was processed by means of multivariate analysis looking for a beer clustering according to the own character and identity. Good results were achieved, indicating that optical methods can be successfully used for beer authentication.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
L. Ciaccheri, E. E. Samano Baca, M. T. Russo, H. Ottevaere, H. Thienpont, and A. G. Mignani "Diffuse-light absorption spectroscopy for beer classification and prediction of alcoholic content", Proc. SPIE 8439, Optical Sensing and Detection II, 84392E (9 May 2012); https://doi.org/10.1117/12.923430
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