S20 - Session P1 - Chemometric analysis for the classification, pattern recognition and clustering of monovarietal `Xinisteri´ wines based on their vintage and vineyard management

Authors: George Manganaris *, Diamando Kokkinou, Andrea Pavlou

Each grape cultivar is characterized by its specific oenochemical character, antioxidant profile and bioactive elements. These chemical compounds encapsulate the typicity of the wines produced by any given cultivar and can be maximized through the development of tailor-made protocols, including viticultural management techniques and profoundly influenced by the oenological production technology applied. In this study, we have applied an array of spectrophotometric assays in combination with ATR-FTIR and chemometrics, to evaluate the impact of (a) vintage (b) mesoclimate and vineyard management and (c) cork density on the chemical profile of Cypriot monovarietal wines produced from the predominant indigenous cultivar 'Xynisteri'. The observed resulting effect of the aforementioned parameters on the total bioactive elements, titratable acidity, soluble solids, pH and color is discussed. Results reported herein can be exploited by the winemaker and the viticulture team to amend protocols for better expression of the unique varietal character upon vinification.