title: Improvement of wine aromatic quality using mixtures of lysozyme and dimethyl dicarbonate, with low SO2 concentration.
abstract: The use of sulphur dioxide (SO2) in the treatment of foodstuffs presents some problems as it could lead to pseudo-allergies in some people. The aim of this research work was to study the addition of different preservative mixtures and their influence on the concentration of volatile compounds and sensorial quality in wine. To do so, vinifications were carried out using Garnacha must to which lysozyme, dimethyl dicarbonate (DMDC) and mixtures of these with SO2 were added at different doses (25 and 50 mg l(-1)). The results were compared with a control sample to which only SO2 had been added (50 mg l(-1)). In general, mixtures of SO2 with lysozyme and DMDC favoured the formation of volatile compounds in the wines. Wines obtained from the mixtures of lysozyme and DMDC with 25 mg l(-1) of SO2 had better sensorial quality than the wines obtained with 50 mg l(-1) as the only preservative used.
authors.affiliation: a Departamento de Química Aplicada , Universidad Pública de Navarra , Pamplona , Spain.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Nieto-Rojo
authors.affiliation: a Departamento de Química Aplicada , Universidad Pública de Navarra , Pamplona , Spain.
authors.forename: Asuncion
authors.initials: A
authors.lastname: Luquin
authors.affiliation: a Departamento de Química Aplicada , Universidad Pública de Navarra , Pamplona , Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Ancín-Azpilicueta
mesh_terms: D004047:Diethyl Pyrocarbonate / Q000031:analogs & derivatives* / Q000737:chemistry; D005519:Food Preservation / Q000379:methods; D005520:Food Preservatives / Q000737:chemistry*; D006801:Humans; D009113:Muramidase / Q000737:chemistry*; D009812:Odorants / Q000032:analysis; D013458:Sulfur Dioxide / Q000737:chemistry*; D055549:Volatile Organic Compounds / Q000737:chemistry; D014920:Wine / Q000032:analysis*
chemical_list: D005520:Food Preservatives; D055549:Volatile Organic Compounds; D013458:Sulfur Dioxide; C061815:dimethyl pyrocarbonate; D009113:Muramidase; D004047:Diethyl Pyrocarbonate
keywords: dimethyl dicarbonate (DMDC); lysozyme; red wine; sulphur dioxide (SO2); volatile compounds