PT  - JOURNAL ARTICLE
AU  - Valentina Canuti
AU  - Monica Picchi
AU  - Bruno Zanoni
AU  - Giovanna Fia
AU  - Mario Bertuccioli
TI  - A Multivariate Methodological Approach to Relate Wine to Characteristics of Grape Composition: The Case of Typicality
AID  - 10.5344/ajev.2016.15111
DP  - 2016 Sep 22
TA  - American Journal of Enology and Viticulture
PG  - ajev.2016.15111
4099  - http://www.ajevonline.org/content/early/2016/09/20/ajev.2016.15111.short
4100  - http://www.ajevonline.org/content/early/2016/09/20/ajev.2016.15111.full
AB  - Typicality is defined as the characteristics of a Protected Designation of Origin (PDO) wine related to a terroir. In a PDO context, a typicality assessment can be used to sum up the global quality of a PDO wine. In this study, a two-phase methodological approach to identify the distinctive characteristics of a PDO wine is described and applied to a case study on Chianti Montespertoli DOCG wine where DOCG is the Italian acronym for PDO. Starting with the evaluation by a panel of wine professionals of the typicality of a series of selected PDO wine samples, it was possible to make a PLS (Partial Least Squares) regression model between wine typicality and its chemical data. The model was used to predict wine typicality from the chemical data of experimental wines (2009, 2010, and 2011 vintages) produced from grapes growing in the PDO area. Finally, regression coefficients of the PLS model were analyzed to select which grape chemical parameters were significant in describing the typicality of the wine. These could be considered the main parameters to take into account in order to manage the process and ensure the typicality of this wine.