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Proceedings Paper

Diffuse-light absorption spectroscopy for beer classification and prediction of alcoholic content
Author(s): L. Ciaccheri; E. E. Samano Baca; M. T. Russo; H. Ottevaere; H. Thienpont; A. G. Mignani
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Paper 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.

Paper Details

Date Published: 9 May 2012
PDF: 8 pages
Proc. SPIE 8439, Optical Sensing and Detection II, 84392E (9 May 2012); doi: 10.1117/12.923430
Show Author Affiliations
L. Ciaccheri, CNR, Istituto di Fisica Applicata Nello Carrara (Italy)
E. E. Samano Baca, Vrije Univ. Brussel (Belgium)
M. T. Russo, Univ. Mediterranea di Reggio Calabria (Italy)
H. Ottevaere, Vrije Univ. Brussel (Belgium)
H. Thienpont, Vrije Univ. Brussel (Belgium)
A. G. Mignani, CNR, Istituto di Fisica Applicata Nello Carrara (Italy)

Published in SPIE Proceedings Vol. 8439:
Optical Sensing and Detection II
Francis Berghmans; Anna Grazia Mignani; Piet De Moor, Editor(s)

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