Curioni A.

Gerbi V.

Mattivi F.

Moio L.

Parpinello G. P.

Piombino P.

Pittari E.

Ugliano M.

English

Archivio istituzionale della ricerca - Alma Mater Studiorum Università di Bologna

1ŒNOIVAS 2019 - 11th International Symposium of Œnology, Bordeaux- 11th edition  In Vino Analytica ScientiaBOOK OF ABSTRACTS25-28J u n e 2019ŒNOIVAS 2019INP/ENSEIRB Matmeca, avenue des Facultés, 33405 TalenceŒNOIVAS 2019ŒNOIVAS 2019 - 11th International Symposium of Œnology, Bordeaux- 11th edition  In Vino Analytica Scientia120Sensory properties, psychophysics, experimental economy, connections with neurosciences/ OralEXPLORING MULTISENSORY INTERACTIONS THROUGH THE STUDY OF ASTRINGENCY DIVERSITY OF MONO-VARIETAL ITALIAN RED WINESPaola PIOMBINO (1)E. Pittari (1), M. Ugliano (2), A. Curioni (3), F. Mattivi (4,5), V. Gerbi (6), G.P. Parpinello (7), L. Moio (1)(1) Department of Agricultural Sciences, University of Naples Federico II, Division of Vine and Wine Sciences, University of Naples Federico II - V.le Italia s.n.c. 83100 - Avellino Italy(2) Department of Biotechnology, University of Verona, It (3) Department of Agronomy, University of Padova, It (4) Department of Food Quality and Nutrition, Fondazione Edmund Mach, It (5) Center Agriculture Food Environment, University of Trento, It (6) Department of Agricultural, Forestry and Food Sciences, University of Torino, It (7) Department of Agricultural and Food Sciences, University of Bologna, ItEmail: paola.piombino@unina.itKeywords: mouthfeel and odor, diversity, interactions, chemometricsAccording to the OIV Focus 2017 estimating the vine varieties distribution in the world, Italy is the richest grape producing country in terms of varieties. This rich biodiversity translates into a wide sensory diver-sity of the wines that was never systematically investigated. The D-Wines (Diversity of Italian Wines) pro-ject, is aimed to start filling this gap by getting a wide chemical and sensorial multi-parametric dataset about 11 mono-varietal red wines (Aglianico, Cannonau, Corvina, Montepulciano, Nebbiolo, Nerello Mas-calese, Primitivo, Raboso, Sagrantino, Sangiovese, Teroldego) representative of the Italian territory and by focusing on tannins and astringency.In this frame, the astringency diversity of a set of 112 wines belonging to the 11 varieties, was investigated by sensory analysis adopting a multi-steps analytical strategy. A first experiment by sorting, allowed to reduce (AHC analysis) the sample-set to 77 wines, representative of the intra-varietal similarities and di-versities in terms of astringency sub-qualities. A second experiment by descriptive analysis was performed on the selected wines and allowed to obtain their sensory profiles (astringency, taste, odor). Both intra- and inter-varietal significant differences of each sensory variable was tested by ANOVA (p<0.05). Quantitative data concerning astringency were analyzed through Discriminant Analysis (DA). Results showed that the 6 variables describing astringency (drying, harsh, unripe, dynamic, complex, sur-face smoothness; Gawel et al., 2000) allowed a good discrimination (F1+F2: 78%) of the wines according to the grape variety. Factor scores of each sample allowed their reclassification into the variety for which the probability of belonging was the greatest. The 57% of the wines resulted correctly reclassified, with Nebbiolo showing the highest value (83%) and Nerello Mascalese the lowest (0%). The quantitative data concerning the well reclassified wines were used to develop “Astringency spectra”, models representing the astringency features of each mono-varietal wine. These “Spectra” were compared to those of the corresponding deodorized wines in order to investigate the multisensory interactions between astringency, taste and odor variables. Several significant correlations were detected (e.g. R2>0.5: drying and dynamic, drying and dehydrated fruit, complex and spicy were posi-tively correlated while harsh and acid were negatively correlated).Acknowledgements: MIUR project N. 20157RN44Y. Other components of D-Wines project: P. Arapitsas4, A. Gambuti1, S. Giacosa6, M. Marangon3, A. Ricci7, L. Rolle6, S. Río Segade6, B. Simonato3, G. Tornielli2, A. Versari7, S. Vincenzi3.VII.O.3Droits réservés

Exploring multisensory interactions through the study of astringency diversity of mono-varietal italian red wines.

https://cris.unibo.it/bitstream/11585/844697/4/Piombino_OEnoIVAS%202019%20Abstract.pdf

Exploring multisensory interactions through the study of astringency diversity of mono-varietal italian red wines.

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