title: Effect of micro-oxygenation on sensory characteristics and consumer preference of Cabernet Sauvignon wine.
abstract: BACKGROUND
  The main objective of this study was to improve the structure of a Cabernet Sauvignon red wine in a short period of time by micro-oxygenation (MOX) at high rates (25 and 50 mL L(-1) month(-1) ), the effects of which were evaluated based on sensory characteristics and consumer preference. Sensory data were analysed by principal component analysis, discriminant analysis and ordinal logistic regression (OLR).
  
  
  RESULTS
  MOX led to significant differences in the colour, colour stability and phenolic compounds of wine. Sensory characteristics also changed through MOX treatment, and wine experts were able to discriminate between MOX-treated and untreated samples, with olfactory intensity, complexity, astringency and roundness being the main discriminating characteristics. Ordinal logistic regression enabled identification of the sensory characteristics that drove consumer preference.
  
  
  CONCLUSIONS
  MOX at high rates improved the sensory characteristics of wine and may therefore be considered a valid technique for obtaining structured wines in a short period of time, i.e. within just a few months after the vintage. The results highlight the need for (i) careful selection of the MOX dosage rate and duration (the 25 mL L(-1) month(-1) dose for 6 days provided the best result) and (ii) continuous monitoring of the MOX treatment.
authors.affiliation: Dipartimento di Scienze degli Alimenti, Università di Bologna, P.za Goidanich 60, I-47023 Cesena, Italy. giusi.parpinello@unibo.it
authors.forename: Giuseppina Paola
authors.initials: GP
authors.lastname: Parpinello
authors.forename: François
authors.initials: F
authors.lastname: Plumejeau
authors.forename: Chantal
authors.initials: C
authors.lastname: Maury
authors.forename: Andrea
authors.initials: A
authors.lastname: Versari
mesh_terms: D003116:Color; D003258:Consumer Behavior; D016002:Discriminant Analysis; D005260:Female; D005511:Food Handling / Q000379:methods*; D006801:Humans; D016015:Logistic Models; D008297:Male; D009812:Odorants; D010100:Oxygen; D010636:Phenols / Q000032:analysis*; D025341:Principal Component Analysis; D013649:Taste; D027843:Vitis; D014920:Wine / Q000032:analysis*
chemical_list: D010636:Phenols; D010100:Oxygen