Abstract:
In food quality, authenticity is one of the most important issues in the context of ensuring
the safety and security of consumers, but it becomes even more important when wine is involved
as this produce has become one of the most counterfeited foods in the world. A batch of 28 wines
from Romanian grape varieties obtained in Dealu Mare and Cotnari regions was analysed from a
physical–chemical point of view in order to assess the possibility of discriminating them according to
geographical origin and variety. The samples were subjected to isotopic analysis, thus determining
13C isotopic ratio using an elemental analyser EA, VarioMicroCube; while the targeted analysis of
phenolic compounds was performed by UHPLC technique, using an Acquity UPLC H-Class. The
basic physico-chemical analysis of the samples was carried out using FTIR spectroscopy (OenoFoss).
Statistical analyses were performed using the TIBCO STATISTICAL SOFTWARE and the statistical test
applied was the Tukey HSD test. Therefore, identified phenolic compounds such as hydroxytyrosol
and coumaric acid are considered varietal markers. Tyrosol, dimers B1 and B2 and also catechin and
epicatechin are indicators of geographical origin.
