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…

Actual challenges and the need to produce alternative products from red grapes rich in phenols and antioxidants

The global consumption of wine has undergone significant changes after several years of covid-19, which was the beginning of a global crisis of the current century. This pushed some people to start looking for comfort and security as they felt that the world around them was losing these benefits. In most cases, this has led to them to idea of rethinking their lives in an attempt to live better or continuing to stay true to their habits and lifestyles despite the pressure of changes. Alcohol in any form is a part of these reactions, leading to increased consumption in the early stages of a crisis, particularly in relation to anxiety.

Armenia: historical origin of domesticated grapevine

The Armenian highlands are located on the northern border of western asia and stretch up to the caucasus from the north. Throughout human history, country has played an important role in connecting the civilizations of europe and the near east. The recent large-scale study about the dual domestication origin and evolution of grapes approved that in the Armenian highlands human and grapevine stories are interlaced through centuries and roots of grapevine domestication are found deep in the pleistocene, ending 11.5 thousand years ago. Findings of this study confirmed that glacial episodes distinguish wild grapes into eastern and western ecotypes around 200-400 ka.

Physical-chemical and sensory characterization of wine made with the cultivar syrah produced in a double pruning system

In recent years, the consumption of fine wines in Brazil has increased significantly, a phenomenon that is also reflected in the expansion of production to new regions. In the brazilian southeast for example, the so-called “winter wines” are being produced, through management in two cycles, one of formation and one of production, with two prunings and one harvest per year, a technique known as double pruning, with vineyards established at altitudes close to or above 1,000 m above sea level.

Exploring the dynamic between yeast mannoproteins structure and wine stability

Mannoproteins are macromolecules found on the surface of yeast cells, composed of hyperbranched polysaccharide negatively charged chains by mannosyl-phosphate groups, fixed to a protein core. during the alcoholic fermentation and aging on lees, these mannoproteins are released from the yeast cell wall and become the main yeast-sourced polysaccharide in wine. due to their techno-functional properties, commercial preparations of mannoproteins can be used as additives to better assure tartaric and protein stability.

Evaluation of sap flow and trunk diameter measurements in grapevines using time series decomposition

Grapevines are very sensitive to weather conditions. Excessively hot and dry periods trigger the activation of survival mechanisms, such as reduction of crop transpiration and the redistribution of water. Monitoring these mechanisms is, therefore, essential to better understand the grapevine water dynamics and maximize water-use efficiency.