Enoforum 2021
IVES 9 IVES Conference Series 9 Enoforum Web 9 Enoforum Web Conference 2021 9 Cellar session 9 Use of ultrasounds to accelerate aging on lees of red wines

Use of ultrasounds to accelerate aging on lees of red wines

Abstract

Aging on lees (AOL) is a powerful technique to protect varietal aroma and color. Simultaneously, helps to soften tannins and increase and improve wine body and structure. AOL is complementary to barrel aging modulating the wood impact and protecting wine from oxidative conditions. The main drawback is that the yeast autolysis developed during AOL is a slow process, taking at least one year to produce the degradation of cell structures and the significant release of yeast polysaccharides and other cell components to modify the sensory profile of wine. This process can be accelerated by using enzymes or thermal treatments and also using non-Saccharomyces yeasts. The use of ultrasounds (USs) is an alternative technology to break the yeast cells and to speed the autolysis process. US are high intensity sound waves that by cavitation, local heating produce the disruption of the cells and the extraction and release of proteins, polysaccharides, and other cell components. When USs are used directly in wines under AOL the thermal collateral effects produce undesired oxidations and affect wine quality even when the release of cell wall polysaccharides is accelerated. The application of USs to yeast biomasses exogenically produced help to overwhelm this inconvenience. Cell breakage and disaggregation is produced in a few minutes by using US and therefore facilitating a faster AOL process. US can be a useful technology to improve and accelerate the AOL of red wines.

DOI:

Publication date: April 23, 2021

Issue: Enoforum 2021

Type: Article

Authors

Antonio MORATA1*, Juan Manuel del Fresno1, Iris Loira1, Rafael Cuerda2, Carmen González1, José Antonio Suárez Lepe1

1 enotecUPM, Universidad Politécnica de Madrid, Madrid, Spain
2 Comenge Cellars, Curiel de Duero, Valladolid, Spain

Contact the author

Tags

Enoforum 2021 | IVES Conference Series

Citation

Related articles…

Correlation between grape and wine quality, landscape diversity, on-field biodiversity, in doc gioia del colle, italy

Analysis of aerial photos by using GIS tools and on-field surveys of flora are used to characterize territories from an agro-ecological point of view and to assess the level of diversity of given agro-ecosystems. More and more correlations between landscape characteristics, sustainability and quality of agriculture production were speculated. In last three years a study was carried out in the area of DOC “Gioia del Colle” in Apulia, South Italy, in order to characterize and investigate different vineyards and sites and find out possible interactions and correlations between the landscape diversity, the biodiversity of fields and the quality of grapes and wines.
Read More

Discriminant value of soil properties for terroir zoning

Environmental analysis (climate, vegetation, geomorfoloy-lanscape, lithology and soil) and its integration in a quality index taking the Appellation of Origin as the sole universe are used as general methodology for terroir zoning in Spain (Sotés and Gómez-Miguel, 1986-2005). This methodology is also applied to specific aspects of different Spanish Appellations of Origin (size, distribution and landscape peculiarities and vine occupation index).

Read More

Trace-level analysis of phosphonate in wine and must by ion chromatography with inductively coupled plasma mass spectrometry (IC-ICP-MS).

Phosphonic acid and especially potassium dihydrogen phosphonate are widely used to restrain the ubiquitous pressure of grapevine downy mildew in viticulture. Nevertheless, phosphonic acid and its derivatives have been banned in organic viticulture in October 2013, because they have been classified as plant protection products since then.

Read More

Climatic potential to produce grapes for wine-making in the tropical north region of Minas Gerais State, Brazil

The tropical north region of Minas Gerais State is one of the least developed of Brazil and viticulture could be an alternative to develop its agriculture zone. The objective of this work was to evaluate the wine grape production climatic potential of that region.

Read More

Oxygen consumption by diferent oenological tanins in a model wine solution

INTRODUCTION: Oenological tannins are widely used in winemaking to improve some characteristics of wines [1] being the antioxidant properties probably one of the main reasons [2]. However, commercial tannins have different botanical sources and chemical composition [3] which probably determines different antioxidant potential. There are some few references about the antioxidant properties of commercial tannins [4] but none of them have really measured the direct oxygen consumption by them. The aim of this work was to measure the kinetics of oxygen consumption by different commercial tannins in order to determine their real capacities to protect wine against oxygen. MATERIAL AND METHODS: 4 different commercial tannins were used: T1: condensed tannin from grape seeds, T2: gallotannin from chinese gallnuts, T3: ellagitannin from oak and T4: tannin from quebracho containing condensed tannins and ellagitannins.

Read More