IVAS 2022 banner
IVES 9 IVES Conference Series 9 IVAS 9 IVAS 2022 9 New C-glucosidic ellagitannin-derived spirit compounds: Identification, quantitation and sensory contribution

New C-glucosidic ellagitannin-derived spirit compounds: Identification, quantitation and sensory contribution

Abstract

Ellagitannins consist the main extractible phenolic compounds in oak wood. They can be extracted during eaux-de-vie aging in barrels and rapidly undergo chemical transformations, such as hydrolysis, reduction, oxidation, or even substitution reactions. Given gaps in knowledge about their composition in spirits, the goal of this work was to explore ellagitannin behavior during Cognac eaux-de-vie aging and search for new C-glucosidic ellagitannin-derived compounds. A purification protocol was established in order to isolate the new formed compounds. UPLC-UV-Q-ToF and NMR spectroscopy were used to characterize a new C-glucosidic ellagitannin, named brandy tannin B. This compound was isolated from Cognac eaux-de-vie for the first time and was quantified in old aged eaux-de-vie and commercial Cognacs.

A triangular test was carried out to explore the incidence of this newly identified compound. Other oxidation compounds derived from ellagitannins, the known whiskey tannins A and B, were also identified for the first time in Cognac eaux-de-vie. It was shown that whiskey tannins A and B presented two isomeric forms. The four whiskey tannins were quantified in this matrix and followed the same trend as the brandy tannins. Both b-1-O-ethylvescalagin and b-1-O-ethylvescalin were also identified for the first time in Cognac, and their development in this matrix was also studied in order to better understand the formation of brandy tannin B. In addition, the organoleptic impact of brandy tannin B was evaluated. This work brings new insights into ellagitannin composition and their contribution to spirit quality.

DOI:

June 22, 2022

Issue: IVAS 2022

Type: Article

Authors

Chira Kleopatra¹, Capello Yoan¹, Emo Catherine¹, Lavergne Joël¹, Quideau Stéphanie², Jourdes Michaël¹ and Teissèdre Pierre-Louis¹

¹Unité de recherche Œnologie, EA 4577, USC 1366 INRAE, ISVV, Univ. Bordeaux, Bordeaux INP, F33882 Villenave d’Ornon
²Univ. Bordeaux, ISM (UMR-CNRS 5255)

Contact the author

Keywords

Brandy tannin B, C-glucosidic ellagitannin-derived, spirit compounds, eau-de-vie, oak wood

Tags

IVAS 2022 | IVES Conference Series

Citation

Related articles…

How are canned wine drinkers perceived? An investigation involving Swiss nationals and different scenarios of outdoor leisure activities

This study examines how people who consume wine in cans are perceived in terms of their basic personality characteristics, helps understand the role of cultural background on people’s perception, and verify the role played by the consumption context on the perception. Our hypothesis is that prejudice and negative attitudes towards wine in cans might exert a negative effect on the evaluation of people who consume canned wine. To evaluate this hypothesis, the consumption of wine in cans was evoked in four different contexts of use during outdoor leisure activity (beach resort, ski resort, desert safari, and party). In order to examine the effect of culture on subject’s response we use participants from Switzerland, a country where three different cultures, associated with three different languages, cohabit.

The use of epifluorescence versus plating to monitor the effect of different parameters on microorganisms in wine

The monitoring of the number of micro-orgranisms in wine is crucial for the wine producer. Traditional counting methods include microscopic enumeration and plating on selective media, which measures the culturability of the cells. The use of epifluorescence microscopy is, however, a method, which can measure both culturability and

Landscapes of Vines and Wines Patrimony – Stakes – Valorisation

The interaction between wine and landscapes is of an unsuspected richness. On the one side, the vineyards form part of the landscapes which they model. On the other side, the wines are related in their perception to the image of a region, a landscape and are at the origin of a cultural richness.

Microbial ecosystems in wineries – molecular interactions between species and modelling of population dynamics

Microbial ecosystems are primary drivers of viticultural, oenological and other cellar-related processes
such as wastewater treatment. Metagenomic datasets have broadly mapped the vast microbial species
diversity of many of the relevant ecological niches within the broader wine environment, from vineyard
soils to plants and grapes to fermentation. The data highlight that species identities and diversity
significantly impact agronomic performance of vineyards as well as wine quality, but the complexity
of these systems and of microbial growth dynamics has defeated attempts to offer actionable
tools to guide or predict specific outcomes of ecosystem-based interventions.

Characteristics of some Montefalco Sagrantino vineyards through polyphenolic components

Characteristics related to the climate and the soil of Montefalco in the centre of Italy have been defined in order to evaluate their influence on the red cv.