Progress of Cryogenics and Isotopes Separation

Newsflash

The National Conference with international participation on New Cryogenic and Isotope Technologies for Energy and Environment - EnergEn 2018 is organized by the National Research-Development Institute for Cryogenic and Isotopic Technologies - ICSI Rm. Valcea with the scientific participation of the University of Pitesti and the University of Craiova and will be held at Baile Govora, in 2018.
PRACTICAL ANALYTICAL TOOLS FOR ASSESSING THE ADDITION OF SYNTHETIC DYES IN WINES Print

PRACTICAL ANALYTICAL TOOLS FOR ASSESSING THE ADDITION OF SYNTHETIC DYES IN WINES

 

 

A. Ranca1*, V. Artem1, A. Galip1, R. E. Ionete2**, I. Geana2,  C. Savin3,

R. Pasa3, A. Vasile3

 

1Research Station for Viticulture and Oenology Murfatlar, Murfatlar 905100, Romania

 

 

ABSTRACT

 

               The main attributes of wine quality are linked with their naturalness and authenticity. This research has inventoried and identified the best methods to track down one of the most frequently fake in the red wine market, namely the addition of synthetic dyes. For this purpose both simple and advanced methods were used, from the fixation on mordansed white wool, on thin layer chromatography (TLC) and liquid chromatography (HPLC), on samples obtained from natural white wines artificially colored with different synthetic dyes. With an appropriate uncertainty of the measurements, using HPLC we have identified and quantified synthetic dyes as azorubin (E122), amaranth (E123) and allura Red AC (E129) in controlled contaminated wine samples. Compared with the first two methods that have provided only qualitative identification of dyes added to wine, the High Performance Liquid Chromatography (HPLC) proved to be a fast analytical method, sensitive and precise, that can be used to detect unauthorized additions such as synthetic dyes used for wine color correction or obtaining red wines from white ones. To test the effectiveness of this method, both natural wine samples, from Murfatlar and Iasi vineyards, contaminated with the most known synthetic dyes used in wines counterfeiting and commercial wine, were studied.

 

KEYWORDS: wine counterfeit, syntetic dyes, high precision method, High Performance Liquid Chromatography (HPLC)


*A. Ranca, Ph.D., research fields: viticulture, quality of wines. E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

**Corresponding author:  R. E. Ionete, Ph.D., research fields: isotope applications in environmental and food safety research, wine authenticity.  E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

2National Research and Development Institute for Cryogenics and Isotopic Technologies - ICIT Rm. Valcea, code 240050 - Rm. Valcea, Uzinei 4, CP7 Raureni, Valcea, Romania

3Research Station for Viticulture and Oenology Iaşi, 700303, Romania