Distinguishing between two crus : as easy as picking the right side ? : Effect of expertise on conceptual and perceptual representations of Beaujolais wines

L’expertise a été étudiée en psychologie cognitive afin de comprendre les mécanismes psychologiques et les compétences intervenant dans différents domaines d’expertise. Dans le domaine du vin, les quelques études menées suggèrent que les experts organiseraient leurs connaissances autour de « prototypes » de couleur ou de cépage. L’objectif général de cette thèse visait à répondre aux questionnements théoriques concernant les représentations des vins d’experts et de novices, ainsi qu’aux questionnements de la filière concernant les perceptions des vins du Beaujolais. Pour cela, l’effet de l’expertise sur les représentations des vins a été évalué en comparant les performances de trois panels …

Concours de vin : de la cohérence entre les jurys à la perception des consommateurs

Cahier technique dégustation. Études de l'impact des concours gratifiant les vins de classement et de médailles auprès des consommateurs à faible implication. On constate que le packaging influence positivement. L'homogénéité de la notation par les jurys a été étudiée. Celle-ci est forte. La notation par les jurys est reconnue avec raison comme gage de qualité.

Inter-individual differences in wine tasting: the case of dimethylsufide

Oxidation in wine: Does expertise influence the perception?

International audience; Wines can develop off-odours that depreciate their quality. Among them, oxidation is one of the most prevalent. The main objective of this work was to study the perception of wine oxidation through the categorization of oxidized wines perceived as not-faulty/faulty depending on the expertise of participants. For this purpose, one white wine and one red wine were spiked with three volatile oxidation compounds (acetaldehyde, phenylacetaldehyde and methional) in order to recreate twelve levels of oxidation in a controlled way. Samples were submitted to orthonasal tasting for being categorized by wine experts and novices and coupled to a free description task. Results de…

Wine competition: from between-juries consistency to sensory perception of consumers

Wine is a complex product offering to consumer a multitude of choices. Considering this diversity, wine competitions provide a way of helping consumers in their choices. However, the dramatic increase of wine contests in the last fifteen years has led to an increase in the number of award-winning wines. Is a medal really a guarantee of quality or having a medal is just a matter of chance? Two studies were therefore conducted during 3 years in a French wine competition. The first study assessed the impact of the order in which the wine was assessed, and the variability between juries’ judgements and therefore the chances of winning an award. For this purpose, the same wine was placed on all …