IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 Perception of Rose Oxide Enantiomers, Linalool and α-Terpineol to Gewürztraminer Wine Aroma

Perception of Rose Oxide Enantiomers, Linalool and α-Terpineol to Gewürztraminer Wine Aroma

Abstract

Monoterpenes are important aroma compounds in white wines. Many monoterpenes are chiral and the chiral forms have different aroma qualities. Rose oxide is an important chiral compound found in Gewuztraminer wines. The enantiomers of the chiral rose oxide are found to vary in wines. The difference sin the enantiomeric ratios have the potential to alter wine aroma, as well as change aroma qualitities when in combination with other monoterpenes. The aim of this study was to evaluate rose oxide enantiomers at different ratios and the interaction of rose oxide with linalool and alpha-terpineol. Twelve compound combinations were tested in a dearomatized wine with diffferent ratios of rose oxide and combinations with linalool and alpha-terpineol. Triangle tests, check-all-that-apply (CATA) and descriptive analysis were used to evaluate the aroma of the wine treatments. Results show that the ratio of rose oxide enantiomers did alter aroma. Additionally, descriptive analysis showed that the rose oxide enantiomer ratios altered aroma when linalool and alpha-terpineol were at low and medium concentrations, influenceing grapefruit, lychee and stone fruit aromas. At high concentrations, linalool and alpha-terpineol mask rose oxide, resulting in wines described as tropical fruit, ginger, rose and honeysuckle. Understanding how monoterpenes alter aroma perception of white wines when at different combinations and concentrations is important to achieve desired wine qualities and helps provide information on interpreting flavor chemistry information

DOI:

Publication date: June 23, 2022

Issue: IVAS 2022

Type: Article

Authors

Tomasino Elizabeth¹, Chigo-Hernandez Mildred Melina¹ and DuBois Aubrey¹

1Oregon State University

Contact the author

Keywords

check-all-that-apply, triangle test, monoterpenes, chiral, descriptive analysis

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

Colloids in red wines: new insights from recent research

Despite their significant impact on wine quality and stability, colloids in red wine remain relatively under-researched. A series of studies, developed in the context of the d-wines project, aimed to provide a comprehensive understanding of the structure, composition, and formation mechanisms of red wine colloids by studying monovarietal wines from 10 of the most significant Italian red grape varieties. Starting from the idea that proteins, polysaccharides, and tannins should be involved in colloid formation, 110 monovarietal red wines were analysed for these components, revealing high inter- and intra-varietal diversity [1].

Read More

Tolerance to sunburn: a variable to consider in the context of climate change

Climate change effects on grapevine phenology and grape primary and secondary metabolites are well described in recent literature. Increasing frequency and intensity of heat waves may be responsible for important yield losses in the future. However, the impact of this event is not so well described in literature. The present study highlights the importance of grape variety tolerance as a mitigation tool to climate change.

Read More

Malbec wines from Argentina: influence of climate on aromatic components and Organoleptic profile. Is it possible to stablish regional identities?

Malbec grapes have been cultivated for 150 years in Argentina. In the last 20 years Argentinian Malbec wines have emerged as a commercial boom worldwide.

Read More

Ripening of Vitis vinifera grapes varieties in São Joaquim, a new wine growing region, Southern Brazil

This report has investigated the ripening characteristics of Vitis vinifera grapes Cabernet Franc, Merlot, Sangiovese and Syrah in two consecutive vintages (2006 and 2007), in order to evaluate the adaptation from these recently varieties planted in São Joaquim town, Santa Catarina State, Brazil.

Read More

Soil monoliths, soil variability and terroir

Aim: The aim of this work is educating people about soil variability and terroir. Soil monoliths are used to educate the wine industry about how to describe a soil profile, interpret the soil formation processes operating in a particular soil profile and consequently the impact of soil properties on vine growth, fruit quality and wine production. Soil monoliths are a permanent artistic tool for educating, research and management of soil variability.  

Read More