terclim by ICS banner
IVES 9 IVES Conference Series 9 OIV 9 OIV 2024 9 Orals - Oenology, methods of analysis 9 “Gentle” sustainable extraction from whole berry by using resonance waves and slight over CO2 overpressure

“Gentle” sustainable extraction from whole berry by using resonance waves and slight over CO2 overpressure

Abstract

The traditional methods of grape extraction of enochemical compounds use very often mechanical energy by pistons such as the pigeage or mechanical energy produced by must (delestage, pumping over). Recent trend by winemaker is trying to introduce in the fermentation tank, whole berry grape to avoid even minimal oxidation. Unfortunately, the use of the traditional mechanical techniques aforementioned, very often does not guarantee the optimal extraction of polyphenols and above all does not assure an uniform temperature in the vessel. Use of resonance waves (AM =AIRMIXING MI TM) or a slight overpressure by CO2 (ADCFTM) permits to work on whole berry guaranteeing the perfect extraction and homogenize the temperature and the oxygen in all the mass. In AM, the great goal to have an uniform temperature in all the tank, permits the winemaker to decide which temperature using to ferment and to extract depending on the wine style she/he wants to reach. This presentation we will summarize data on experimental works done with these two techniques and we show, beyond the theoretical explanation, the kinetic of extraction of different phenol classes and of volatile organic compounds even in the production of wine without sulfite addition.

Estrazione gentile e sostenibile da acino intero utilizzando onde di risonanza e sovrapressione

I metodi tradizionali di estrazione dei composti enochimici dall’uva utilizzano molto spesso l’energia meccanica mediante pistoni come il pigeage o l’energia meccanica prodotta dal mosto (delestage, rimontaggi). La recente tendenza dell’enologo sta cercando di introdurre nel serbatoio di fermentazione l’uva a bacca intera per evitare anche la minima ossidazione. Purtroppo, l’utilizzo delle tradizionali tecniche meccaniche sopra citate, molto spesso non garantiscono l’estrazione ottimale con rimanenza di zuccheri residui nelle vinacce. L’utilizzo di onde di risonanza (airmixingtm) e una leggera sovrapressione da parte di CO2 (adcftm) permettono di lavorare sull’acino intero garantendo la perfetta estrazione. In questa presentazione presenteremo i dati di un lavoro sperimentale svolto con queste due tecniche in cui mostriamo, oltre alla spiegazione teorica, la cinetica di estrazione di diverse classi fenoliche e anche di composti organici volatili anche nella produzione di vino senza aggiunta di solfiti.

Extraction douce et durable de baies entières par ondes de résonance et surpression

Les méthodes traditionnelles d’extraction des composés œnochimiques du raisin utilisent très souvent de l’énergie mécanique par pistons comme le pigeage ou de l’énergie mécanique produite par le moût (délestage, remontage). La tendance récente des vignerons consiste à introduire dans la cuve de fermentation des raisins à baies entières pour éviter même une oxydation minime. Malheureusement, l’utilisation des techniques mécaniques traditionnelles évoquées plus haut, ne garantit bien souvent pas une extraction optimale des sucres résiduels dans le marc. L’utilisation d’ondes de résonance (airmixingtm) et d’une légère surpression de CO2 (adcftm) permettent de travailler sur baie entière garantissant une extraction parfaite. Dans cette présentation nous présenterons les données d’un travail expérimental réalisé avec ces deux techniques où nous montrons, au-delà de l’explication théorique, la cinétique d’extraction de différentes classes de phénols ainsi que de composés organiques volatils même dans la production de vin sans ajout de sulfites.

DOI:

Publication date: November 18, 2024

Issue: OIV 2024

Type: Article

Authors

Fabio Mencarelli¹, Giuseppe Floridia², Stefano Pettinelli¹, Andrea Uliva²

¹ Wine research consultant, Via Poggio di Montemagno 19, Calci (PI), Italy
² Parsec SRL, Italy

Contact the author*

Tags

Full papers OIV 2024 | IVES Conference Series | OIV | OIV 2024

Citation

Related articles…

Wine tourism as a catalyst for sustainable competitive advantage: unraveling the role of winery image and reputation

This study examines the impact of wine tourism development on the sustainable competitive advantage of Spanish wineries, while also exploring the mediating roles of winery image and winery reputation in this relationship.

New highlights of polyphenols from red wine to counteract ocular degenerative diseases

More recently, studies have shown that polyphenols could also prevent or improve vision in patients with ocular diseases and especially age-related macular degeneration (AMD) which is an eye disease characterized by damage to the central part of the retina, the macula, and that affects millions of people worldwide. Despite therapeutic advances thanks to the use of anti-vascular endothelial growth factor (VEGF), many resistance mechanisms have been found to accentuate the visual deficit.

Metabolic response of vitis vinifera and interspecific vitis sp. varieties to heat stress, water deficit and combined stress, using a metabolomic approach

As greenhouse gas emissions continue to rise, climate projections indicate an increased likelihood of heat waves and drier conditions in canada. these changes pose significant challenges to grapevine cultivation, particularly during critical growth stages such as new plantings. interspecific hybrid grape varieties, developed through different breeding programs that combine vitis vinifera with more robust species like v. riparia and v. labrusca varieties, are often touted for their potential resilience to environmental stress.

The bottleneck/cork interface: A key parameter for wine aging in bottle

The shelf life of wine is a major concern for the wine industry. This is particularly true for wines intended for long cellaring, which are supposed to reach their peak after an ageing period ranging from a few months to several years, or even decades. Low, controlled oxygen inputs through the closure system are generally necessary for the wine to evolve towards its optimum organoleptic characteristics. Our previous studies have already shown that the interface between the cork and the bottleneck plays a crucial role in the transfer of oxygen into the bottled wine.

Les AOC : un frein ou un moteur à l’innovation ? Retour sur l’histoire économique, scientifique, sociale et technique des vins d’appellation au XXe siècle en France

At a time when the world’s winegrowing industry is having to adapt to a number of challenges, winegrowers are wondering about the consequent changes they will have to make (grape varieties, changes in vineyard and cellar techniques). For winegrowers and consumers alike, there is also the question of how these changes will affect the taste of their wines. This research, based on the study of numerous sources and archives from the 20th century, some of which have never been published before, aims to show that, in the recent past, the winegrowing world has shown incredible resilience in the face of crises, and that the taste and perception of fine wines has changed considerably in 100 years.