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Proceedings Paper

Synchronous fluorescence spectroscopy for analysis of wine and wine distillates
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Paper Abstract

Wine and brandies are multicomponent systems and conventional fluorescence techniques, relying on recording of single emission or excitation spectra, are often insufficient. In such cases synchronous fluorescence spectra can be used for revealing the potential of the fluorescence techniques. The technique is based on simultaneously scanning of the excitation and emission wavelength with constant difference (Δλ) maintained between them. In this study the measurements were made using FluoroLog3 spectrofluorimeter (HORIBA Jobin Yvon, France) and collected for excitation and emission in the wavelength region 220 - 700 nm using wavelength interval Δλ from 10 to 100 nm in 10 nm steps. This research includes the results obtained for brandy and red wine samples. Fluorescence analysis takes advantage in the presence of natural fluorophores in wines and brandies, such as gallic, vanillic, p-coumaric, syringic, ferulic acid, umbelliferone, scopoletin and etc. Applying of synchronous fluorescence spectroscopy for analysis of these types of alcohols allows us to estimate the quality of wines and also to detect adulteration of brandies like adding of a caramel to wine distillates for imitating the quality of the original product aged in oak casks.

Paper Details

Date Published: 8 January 2015
PDF: 6 pages
Proc. SPIE 9447, 18th International School on Quantum Electronics: Laser Physics and Applications, 94470Z (8 January 2015); doi: 10.1117/12.2178026
Show Author Affiliations
Ya. Andreeva, Institute of Electronics (Bulgaria)
"St. Kliment Ohridski" Univ. of Sofia (Bulgaria)
E. Borisova, Institute of Electronics (Bulgaria)
Ts. Genova, Institute of Electronics (Bulgaria)
"St. Kliment Ohridski" Univ. of Sofia (Bulgaria)
Al. Zhelyazkova, Institute of Electronics (Bulgaria)
L. Avramov, Institute of Electronics (Bulgaria)

Published in SPIE Proceedings Vol. 9447:
18th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Sanka Gateva; Alexandros Serafetinides, Editor(s)

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