terclim by ICS banner
IVES 9 IVES Conference Series 9 OIV 9 OIV 2024 9 Short communications - Oenology, methods of analysis 9 Consumer acceptance of sweet wines produced by stopping fermentation with octanoic and decanoic acids

Consumer acceptance of sweet wines produced by stopping fermentation with octanoic and decanoic acids

Abstract

The use of medium chain fatty acids for arresting the fermentation and producing sweet wines was investigated at industrial level. Doses of 10 mg/l of octanoic or decanoic acid and a combination of 5+5 mg/l octanoic and decanoic acid were used to produce sweet wines of tamaioasa romanească variety in volumes of 3000 l. As using these acids also leads to some concentrations of their corresponding ethyl-esters, with potential impact on the aromatic profile, it is important to have the wines evaluated by consumers. The resulted wines were evaluated by novice consumers, as well as by professional tasters. Consumers appreciated equally the wines treated with 10 mg/l decanoic acid and the control wines, while professionals assigned significantly higher scores for wines treated with 10 mg/l of either octanoic or decanoic acid, compared to controls. The samples treated with the combined dose of 5+5 mg/l octanoic and decanoic acid were not preferred by either consumers or professional tasters. Thus, the variant with decanoic acid appears to be the one most preferred by both consumers and professionals. Sensory profiles of experimental wines are also presented and discussed.    

Acceptation par des consommateurs des vins doux produits par arrêt de la fermentation avec acides octanoïque et décanoïque

L’utilisation d’acides gras à chaîne moyenne pour arrêter la fermentation et produire des vins doux a été étudiée au niveau industriel. Des doses de 10 mg/l d’acide octanoïque ou décanoïque et une combinaison de 5+5 mg/l d’acide octanoïque et décanoïque ont été utilisées pour produire des vins doux de la variété tamaioasa romanească dans des volumes de 3000 l. Comme l’utilisation de ces acides conduit également à certaines concentrations de leurs esters éthyliques correspondants, ayant un impact potentiel sur le profil aromatique, il est important de faire évaluer les vins par les consommateurs. Les vins obtenus ont été évalués par des consommateurs novices, ainsi que par des dégustateurs professionnels. Les consommateurs ont préféré autant les vins traités avec 10 mg/l d’acide décanoïque que les vins témoins, tandis que les professionnels ont attribué des notes significativement plus élevées aux vins traités avec 10 mg/l d’acide octanoïque ou décanoïque. Ainsi, la variante à base d’acide décanoïque apparaît comme la plus appréciée tant par les consommateurs que par les professionnels. Les échantillons traités avec la dose combinée de 5+5 mg/l d’acide octanoïque et décanoïque n’ont été préférés ni par les consommateurs ni par les dégustateurs professionnels. Les profils sensoriels des vins expérimentaux sont également présentés et discutés.

Aceptación para los consumidores de vinos dulces elaborados a partir de detención de fermentación con ácidos octanoicos y decanoicos

Se investigó a nivel industrial el uso de ácidos grasos de cadena media para detener la fermentación y producir vinos dulces. Se utilizaron dosis de 10 mg/l de ácido octanoico o decanoico y una combinación de 5+5 mg/l de ácido octanoico y decanoico para producir vinos dulces de la variedad tamaioasa romanească en volúmenes de 3000 l. Como el uso de estos ácidos también conduce a algunas concentraciones de sus correspondientes ésteres etílicos, con un impacto potencial en el perfil aromático, es importante que los consumidores evalúen los vinos. Los vinos resultantes fueron evaluados tanto por consumidores novatos como por catadores profesionales. Los consumidores prefirieron por igual los vinos tratados con 10 mg/l de ácido decanoico y los vinos de control, mientras que los profesionales asignaron puntuaciones significativamente más altas a los vinos tratados con 10 mg/l de ácido octanoico o decanoico. Así, la variante con ácido decanoico parece ser la preferida tanto por consumidores como por profesionales. Las muestras tratadas con la dosis combinada de 5+5 mg/l de ácido octanoico y decanoico no fueron las preferidas ni por los consumidores ni por los catadores profesionales. También se presentan y discuten los perfiles sensoriales de vinos experimentales.

Publication date: November 18, 2024

Issue: OIV 2024

Type: Article

Authors

George Adrian Cojocaru¹, Arina Oana Antoce¹, Cornel Baniţă¹

¹ University of Agronomic Sciences and Veterinary Medicine of Bucharest, Faculty of Horticulture, Department of Bioengineering of Horti-Viticultural Systems, 59 Mărăști Ave., Sector 1, Bucharest, Romania

Contact the author*

Tags

IVES Conference Series | OIV | OIV 2024

Citation

Related articles…

The legal concept of “cultural heritage” to refurbish the wine sector’s priorities

Following the latest oiv global report (april 26, 2024), the prevailing perception of wine consumption finds itself undergoing one of its most challenging adjustments. It’s plausible to anticipate a shift in the scope of pdo wines towards more human-centered products (wells and stiefel, 2019), necessitating the entire sector to adapt strategies to public interest patterns (touzeau, 2010: 17-31). Previously, a dominant notion of cultural property underscored the value of wine regions; the primary interest revolved around estate owners and retailers, along with vigneron tales.

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

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 do not guarantee the optimal extraction with residual sugars in the marc. Use of resonance waves (airmixingtm) and a slight overpressure by CO2 (adcftm) permit to work on whole berry guaranteeing the perfect extraction.

Application of regenerative agriculture to viticulture: The REVINE project

Conventional viticulture improved the quality of production, but the economic costs can be unsustainable. Today, producers need to consider consumers’ demands for healthy, eco-friendly products. Institutions promote sustainable agriculture, with regenerative agriculture being the latest generation of methodologies focused on recovering losses and ensuring future sustainability. The revine project studies regenerative agricultural technology applied in mediterranean countries to provide precise indications for soil processing and effective vineyard treatments.

Correction de la teneur en alcool des vins par évaporation partielle sous vide en cours de fermentation alcoolique

Climate change has become a reality that is becoming more and more apparent every day, with changes in the physico-chemical composition of grapes and an increase in the alcohol content of finished wines. These higher alcoholic degrees are not without consequences for the success of alcoholic and malolactic fermentation. Correcting the alcohol content (-20% of the initial alcoholic strength) is also part of an approach designed to meet consumer expectations for healthier, lighter or lower-alcohol wines (9 to 13% vol.). Correcting the alcohol content of wines also rebalances the mouthfeel by reducing the alcohol’s burn.

Mousy off-flavor detection: a rapid LCMS/MS method

These days, consumers are interested in food products linked to the environment and the concept of naturalness. They prefer “free” products, such as those with no pesticide residues or no added sulfur dioxide (so2) in wines. In fact, so2 is the most widely used preservative in winemaking, as it has multiple properties at low cost: it is antioxidant, antioxidasic and antimicrobial.