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ABSTRACT
In this article we discuss the operation of laser-induced emission (fluorescence and Raman) spectroscopy for the authentication of wines. This technique has practically never been exploited in this field, and we show that it should provide relevant information on both content and container. As regards the container, the analysis of the laser-induced emission of light can identify the pigments on labels and capsules and characterize the glass of the bottles. The wines themselves may be studied through the analysis of their Raman spectra, which for example can identify the nature and quantity of sugars in their composition
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Read the articleAUTHORS
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Coralie MARTIN: University of Bordeaux, CNRS, ISM UMR 5255, Talence, France - Advanced Track and Trace, ATT, Rueil Malmaison, France
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Jean-Luc BRUNEEL: University of Bordeaux, CNRS, ISM UMR 5255, Talence, France
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François GUYON: Service commun des laboratoires, Pessac, France
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Bernard MEDINA: Service commun des laboratoires, Pessac, France
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Michael JOURDES: Université de Bordeaux, ISVV, EA Œnologie 4577, Villenave d'Ornon, France
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Pierre-Louis TEISSEDRE: Université de Bordeaux, ISVV, EA Œnologie 4577, Villenave d'Ornon, France
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François GUILLAUME: University of Bordeaux, CNRS, ISM UMR 5255, Talence, France - Editor's note: this article is taken from the journal "Annales des falsifications, de l'expertise chimique et toxicologique n° 981" published by the SECF (Société des experts chimistes de France).
INTRODUCTION
In the context of authentication and the fight against counterfeiting, chemical analysis methods are indispensable. Indeed, despite all the precautions that can be taken to combat counterfeiting of a commercial product through complex marking methods, only analyses that identify the chemical composition of the various elements that make up the container and contents can guarantee the authenticity of the product and possibly the origin of the counterfeit object. There are a large number of more or less sophisticated and often complementary analytical techniques. An important challenge is to have relatively light, versatile analytical tools that can at least identify an anomaly or inconsistency. Optical spectroscopy techniques are promising, as recent advances in instrumentation mean that moderately expensive, compact and portable tools are now available, which can be miniaturized in the near future. In this context, laser spectroscopy is a particularly attractive technology, and we will illustrate its potential in the field of wine authentication with a few examples.
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KEYWORDS
Fluorescence | Raman scattering | analysis | food industries | spectroscopy | containing and content authentication
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Laser-induced emission spectrometry applied to wine authentication
Laser optical spectroscopy and Raman spectrometer
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