Raman spectroscopy of white wines
Language
EN
Article de revue
This item was published in
Food Chemistry. 2015-08-15, vol. 181, p. 235-240
English Abstract
The feasibility of exploiting Raman scattering to analyze white wines has been investigated using 3 different wavelengths of the incoming laser radiation in the near-UV (325 nm), visible (532 nm) and near infrared (785 ...Read more >
The feasibility of exploiting Raman scattering to analyze white wines has been investigated using 3 different wavelengths of the incoming laser radiation in the near-UV (325 nm), visible (532 nm) and near infrared (785 nm). To help in the interpretation of the Raman spectra, the absorption properties in the UV–visible range of two wine samples as well as their laser induced fluorescence have also been investigated. Thanks to the strong intensity enhancement of the Raman scattered light due to electronic resonance with 325 nm laser excitation, hydroxycinnamic acids may be detected and analyzed selectively. Fructose and glucose may also be easily detected below ca. 1000 cm−1. This feasibility study demonstrates the potential of the Raman spectroscopic technique for the analysis of white wines.Read less <
English Keywords
Raman spectroscopy
fluorescence spectroscopy
white wines
phenolic composition
hydroxycinnamic acids
sugars
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