terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Inert gases persistence in wine storage tank blanketing

Inert gases persistence in wine storage tank blanketing

Abstract

It is common to find tanks in the winery with wine below their capacity due to wine transfers between tanks of different capacities or the interruption of operations for periods of a few days. This situation implies the existence of an ullage space in the tank with prolonged contact with the wine causing its absorption/oxidation. Oxygen uptake from the air headspace over the wine due to differences in the partial pressure of O2 can be rapid, up to 1.5 mL of O2 per liter of wine in one hour and 100 cm2 of surface area1 and up to saturation after 4 hours. The industrial solution consists of inerting the gas space by means of an inert gas blanket to avoid contact with air. This procedure can be done with automatic systems that generate an overpressure of inert gas and are able to respond to variations in the filling level of the tanks. This is not common in most wineries and in order to propose an easy and effective system, nitrogen (N2), argon (Ar), and carbon dioxide (CO2), the commonly used inert gases in the wine industry, together with their mixtures, have been compared. The persistence of a gaseous blanket of the inert gas (O2<0.5%)2 in the ullage space of the tank and its ability to reduce the uptake of atmospheric O2 into the wine were analyzed.

In addition to checking which of the five gases tested provided the best protection over time with a simple application, two different application methods were compared. In a third phase, the economic optimization was studied by reducing the amount of gas on the basis of the ability of almost all of these gases to form blankets due to their higher density than air.

Acknowledgements: ITACyL for their financial support to Actividades de Investigación, Promoción de la Innovación y la Transferencia del Conocimiento en Sectores Estratégicos de Castilla y León: SECTOR VITIVINÍCOLA

1 Peynaud E. (1981) Knowing and Making Wine. Wiley

Dharmadhikkari, M. (2016) Use of Inert Gases. Midwest Grape and Wine Industry Institute

DOI:

Publication date: October 13, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Ignacio Nevares*, María Asensio-Cuadrado, Rubén del Barrio-Galán, Elena Pérez-Cardo, Ana Martínez-Gil, Luis Miguel Cárcel and Maria del Alamo-Sanza

Grupo UVaMOX-Universidad de Valladolid. Avda. Madrid 50. 34001 Palencia, Spain

Contact the author*

Keywords

inert gases, blanketing, oxygen, ullage space

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Association between dietary pattern and wine consumption and Alzheimer’s disease in a cohort from La Rioja (Spain)

Addressing modifiable risk factors is the most promising strategy to prevent/delay Alzheimer Disease (AD)[1]. The aim of the study was to establish the connections between dietetic habits, wine consumption and AD. Thus, 98 volunteers were recruited: 50 diagnosed as AD and 48 healthy/controls. The Food Frequency Questionnaire (FFQ) was used for dietary patterns assessment and, based on these data, the Mind Diet Score was calculated. (Poly)phenol metabolites (especially derived from wine consumption) were analyzed by UPLC-QqQ-MS/MS in 24-h urine samples to confirm dietary (poly)phenol consumption.

Genetic identification of 200-year-old Serbian grapevine herbarium

Botanist Andreas Raphael Wolny collected a grapevine herbarium from 1812-1824 in Sremski Karlovci (wine region of Vojvodina, Serbia), which represents local cultivated grapevine diversity before the introduction of grape phylloxera in the region. The herbarium comprises over 100 samples organized into two subcollections based on berry colour (red and white varieties), totaling 47 different grape varieties. The objective of this study was to investigate the historical varietal assortment of Balkan and Pannonian winegrowing areas with long viticulture traditions.

Biotic and abiotic factors affecting physiological aspects underlying vegetative vigour in two commercial grapevine varieties

Grapevine vigour, defined as the propensity to assimilate, store and/or use non-structural sugars for allowing fast growth of shoots and producing large canopies[1], is crucial to optimize vineyard management. Recently, a model has been proposed for predicting the vigor of young grapevines through the measurement of the vegetative growth and physiological parameters, such as water status and gas exchange[2]. Our objectives were (1) to explore the influence of the association of two grapevine varieties (Tempranillo and Cabernet Sauvignon, grafted onto R110 rootstocks) with arbuscular mycorrhizal fungi (AMF) on the vegetative vigour of young plants; and (2) to assess the effect of environmental factors linked to climate change on the vegetative vigour of Cabernet Sauvignon.

Effect of soil particle size on vine water status, leaf ABA content and berry quality in Nebbiolo grapes

The root and shoot abscisic acid (ABA) accumulation in response to water deficit and its relation with stomatal conductance is longtime known in grapevine. ABA-dependent and ABA-independent signalling response to osmotic stress coexist in sessile plants. In grapevine, the signaling role of ABA in response to water stress conditions and its influence on berry quality is critical to manage grapevine acclimation to climate change.

Green pruning of shoots to force new sprouting of buds, in fruit set and in pea size: vegetative, productive and maturation effects, in cv. Verdejo

The context of climate crisis leads to the acceleration of technological ripening of grapes, with unsuitable loss of acidity, so various vineyard management alternatives are being considered to delay the grape ripening. The delay of the vegetative cycle towards a period of milder temperatures affects ripening, but vine behavior can vary according to the area, conduction, watering, variety, etc. A work is proposed to know the response to the green pruning of shoots, executed in fruit set and in pea size, in cv. Verdejo.