Characterization and Control of Hidden Micro-Oxygenation in the Winery: Wine Racking

Transferring wine is a common operation in most of the wineries in the world that depends mainly on the equipment and materials used. These contributions are widely unknown, and their knowledge is of vital importance to controlling the winemaking process. This work presents the results of characteri...

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Main Authors: Ignacio Nevares, Ainara Fernández-Díaz, Maria del Alamo-Sanza
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Foods
Subjects:
Online Access:https://www.mdpi.com/2304-8158/10/2/386
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author Ignacio Nevares
Ainara Fernández-Díaz
Maria del Alamo-Sanza
author_facet Ignacio Nevares
Ainara Fernández-Díaz
Maria del Alamo-Sanza
author_sort Ignacio Nevares
collection DOAJ
description Transferring wine is a common operation in most of the wineries in the world that depends mainly on the equipment and materials used. These contributions are widely unknown, and their knowledge is of vital importance to controlling the winemaking process. This work presents the results of characterizing the oxygen supply due to the use of hoses of different materials (Butyl Rubber, IIR; Nitrile Butadiene Rubber, NBR; Ethylene Propylene Diene Monomer rubber, EPDM; Ultra-high-molecular-weight polyethylene, UHMW; Natural Rubber, NR), dimensions (DN32; DN50), connectors (DIN 11851, Tri-CLAMP) with gaskets of different materials (NBR; EPDM; Fluorocarbon, FKM/FPM; silicone rubber, Q/VMQ; Polytetrafluoroethylene, PTFE). In addition, the use of different inert gases (N<sub>2</sub>, CO<sub>2</sub>, Ar, N<sub>2</sub> + CO<sub>2</sub> and Ar + CO<sub>2</sub>) for air purging of hoses and tanks, as well as for ullage blanketing during tank-to-tank racking, and their economic impact were studied. The results indicated that the IIR hoses had the least amount of O<sub>2</sub> added to the liquid and that the Tri-clamp connectors were generally more airtight, with the FKM seals standing out. The most recommended inert gas was CO<sub>2</sub> when the type of wine allows it, N<sub>2</sub> being the most recommended in any case. When all these recommendations were used together the addition of O<sub>2</sub> during tank-to-tank racking was drastically reduced.
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spelling doaj.art-5c2c21eb12da4fa1a1ef54c5378144912023-12-03T13:10:12ZengMDPI AGFoods2304-81582021-02-0110238610.3390/foods10020386Characterization and Control of Hidden Micro-Oxygenation in the Winery: Wine RackingIgnacio Nevares0Ainara Fernández-Díaz1Maria del Alamo-Sanza2Department of Agricultural and Forestry Engineering, UVaMOX, Universidad de Valladolid, Unidad Asociada al CSIC, 34001 Palencia, SpainDepartment of Agricultural and Forestry Engineering, UVaMOX, Universidad de Valladolid, Unidad Asociada al CSIC, 34001 Palencia, SpainDepartment of Analytical Chemistry, UVaMOX, Universidad de Valladolid, Unidad Asociada al CSIC, 34001 Palencia, SpainTransferring wine is a common operation in most of the wineries in the world that depends mainly on the equipment and materials used. These contributions are widely unknown, and their knowledge is of vital importance to controlling the winemaking process. This work presents the results of characterizing the oxygen supply due to the use of hoses of different materials (Butyl Rubber, IIR; Nitrile Butadiene Rubber, NBR; Ethylene Propylene Diene Monomer rubber, EPDM; Ultra-high-molecular-weight polyethylene, UHMW; Natural Rubber, NR), dimensions (DN32; DN50), connectors (DIN 11851, Tri-CLAMP) with gaskets of different materials (NBR; EPDM; Fluorocarbon, FKM/FPM; silicone rubber, Q/VMQ; Polytetrafluoroethylene, PTFE). In addition, the use of different inert gases (N<sub>2</sub>, CO<sub>2</sub>, Ar, N<sub>2</sub> + CO<sub>2</sub> and Ar + CO<sub>2</sub>) for air purging of hoses and tanks, as well as for ullage blanketing during tank-to-tank racking, and their economic impact were studied. The results indicated that the IIR hoses had the least amount of O<sub>2</sub> added to the liquid and that the Tri-clamp connectors were generally more airtight, with the FKM seals standing out. The most recommended inert gas was CO<sub>2</sub> when the type of wine allows it, N<sub>2</sub> being the most recommended in any case. When all these recommendations were used together the addition of O<sub>2</sub> during tank-to-tank racking was drastically reduced.https://www.mdpi.com/2304-8158/10/2/386oxygenpurgingblanketingfree SO<sub>2</sub>rackinghose
spellingShingle Ignacio Nevares
Ainara Fernández-Díaz
Maria del Alamo-Sanza
Characterization and Control of Hidden Micro-Oxygenation in the Winery: Wine Racking
Foods
oxygen
purging
blanketing
free SO<sub>2</sub>
racking
hose
title Characterization and Control of Hidden Micro-Oxygenation in the Winery: Wine Racking
title_full Characterization and Control of Hidden Micro-Oxygenation in the Winery: Wine Racking
title_fullStr Characterization and Control of Hidden Micro-Oxygenation in the Winery: Wine Racking
title_full_unstemmed Characterization and Control of Hidden Micro-Oxygenation in the Winery: Wine Racking
title_short Characterization and Control of Hidden Micro-Oxygenation in the Winery: Wine Racking
title_sort characterization and control of hidden micro oxygenation in the winery wine racking
topic oxygen
purging
blanketing
free SO<sub>2</sub>
racking
hose
url https://www.mdpi.com/2304-8158/10/2/386
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