title: The impact of different barrel sanitation approaches on the spoilage microflora and phenols composition of wine.
abstract: Careful control of spoilage microflora inside wine containers is a key issue during winemaking. To date, attention has been paid to the development of an effective protocol for the eradication of spoilage agents, especiallyBrettanomyces, from barrels. Few studies have taken into account the modifications caused by sanitation treatments in wine and wood barrels. In the present study the effects of two sanitation treatments (ozone and sodium hydroxide) on barrel spoilage microflora and the composition of the wine stored inside them were evaluated. The phenols of wine (38 compounds) were characterised using a UHPLC-MS during the first 3 months of wine ageing, to see possible alterations in composition due to the chemical exchange from wood to wine in presence of sanitising agents. With the same scope, a panel of 13 judges carried out sensorial analysis of wines. The results showed that the tested treatments had little effect on the organoleptic characteristics of wines, but underline the different performance of the sanitation treatments in terms of eradicating microorganisms.
authors.affiliation: Edmund Mach Foundation, Via E. Mach 1., 38010 San Michele All'adige, Trento, Italy.
authors.forename: Raffaele
authors.identifier: 0000-0001-9525-3956
authors.initials: R
authors.lastname: Guzzon
authors.affiliation: Girlan Kellerei, Via St. Martin Strasse, 24., 39057 Cornaiano, Bolzano, Italy.
authors.forename: Manfred
authors.initials: M
authors.lastname: Bernard
authors.affiliation: Edmund Mach Foundation, Via E. Mach 1., 38010 San Michele All'adige, Trento, Italy.
authors.forename: Chiara
authors.initials: C
authors.lastname: Barnaba
authors.affiliation: Edmund Mach Foundation, Via E. Mach 1., 38010 San Michele All'adige, Trento, Italy.
authors.forename: Daniela
authors.initials: D
authors.lastname: Bertoldi
authors.affiliation: Laimburg Research Centre for Agriculture and Forestry, Laimburg 6., 39040 Vadena, Bolzano, Italy.
authors.forename: Konrad
authors.initials: K
authors.lastname: Pixner
authors.affiliation: Edmund Mach Foundation, Via E. Mach 1., 38010 San Michele All'adige, Trento, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Larcher
keywords: Barrel; Ozone; Simple phenols; Spoilage microflora; Wine