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  • Title: Sulfur free red wines through the use of grapevine shoots: Impact on the wine quality.
    Author: Raposo R, Chinnici F, Ruiz-Moreno MJ, Puertas B, Cuevas FJ, Carbú M, Guerrero RF, Ortíz-Somovilla V, Moreno-Rojas JM, Cantos-Villar E.
    Journal: Food Chem; 2018 Mar 15; 243():453-460. PubMed ID: 29146365.
    Abstract:
    Following a preliminary study to determine the possibility of using a grapevine shoot extract (VIN) as a sustainable alternative to sulfur dioxide (SO2), in this study, the chromatic features, phenolic composition, and sensory analysis of wines treated with VIN at two concentrations were studied during storage in bottle for the first time. The highest differences were found in phenolic compounds after 12months of storage in bottle. The VIN wines had a low content of free anthocyanins and were high in vinyl-pyranoanthocyanins, and B-type vitisins. Consequently, they showed better chromatic characteristics. Moreover VIN, especially at high dose, preserved non-anthocyanin phenolic compounds better than SO2. However, at this high dose some organoleptic properties were affected. VIN, when used at a low dose, is able to preserve wine composition without loss of quality.
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