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…

Agrovoltaic on vineyards: preliminary resuls on seasonal and diurnal whole-canopy gas exchange

Context and purpose of the study. Albeit standing as a fashionable research topic dual use of land as viti-voltaic still lacks of fundamental knowledge about whole canopy grapevine response to altered microclimate under panels vs open field conditions.

Induction of polyphenols in seedlings of Vitis vinifera cv. Monastrell by the application of elicitors

Contamination problems arising from the use of pesticides in viticulture have raised concerns. One of the alternatives to reduce contamination is the use of elicitors, molecules capable of stimulating the natural defences of plants, promoting the production of phenolic compounds (PC) that offer protection against biotic and abiotic stress. Previous studies on Cabernet-Sauvignon seedlings demonstrated that foliar application of elicitors methyl jasmonate (MeJ) and benzothiadiazole (BTH) increased proteins and PC involved in grapevine defence mechanisms. However, no trials had been conducted on Monastrell seedlings, a major winegrape variety in Spain.

Development of the geographic indication vale do São Francisco for tropical wines in Brazil

Aim: Geographical Indications-GI are commonly used to protect territorial products around the world, such as cheese and wine. This qualification is useful because it improves the producer’s organization, protects and valorizes the distinct origin and quality of the product, increases recognition and notoriety, and adds value for products. Tropical wines are mainly produced in Brazil, India,

Grapevine, berry and soil Indicators to manage minimal irrigation strategy in semi-arid conditions: example of Grenache noir (Vitis vinifera L.)

Context and purpose of the study. Climate change in many Mediterranean wine-growing regions is resulting in lower rainfall and higher reference evapotranspiration, generally leading to reduced water availability for vines.

Unveiling the bioactive potential of aglianco grape pomace: oleanolic acid as a promising natural product

The winemaking industry generates a substantial amount of byproducts, including grape pomace, which is often discarded as waste. However, this seemingly useless material holds a wealth of bioactive compounds with potential health benefits. Recognizing the value of circular economy principles, this study delves into the comprehensive chemical analysis of aglianco grape pomace, aiming to transform this byproduct into a valuable resource.