OENO IVAS 2019 banner
IVES 9 IVES Conference Series 9 OENO IVAS 9 OENO IVAS 2019 9 Analytical developments from grape to wine, spirits : omics, chemometrics approaches… 9 Q-NMR measurements: quantitative analysis of wine composition applied to Bordeaux red wines authenticity control

Q-NMR measurements: quantitative analysis of wine composition applied to Bordeaux red wines authenticity control

Abstract

Traceability of wine is today a consumer demand and a scientific challenge. The methods of analysis must be able to control three fundamental parameters: the geographical origin, the grape varieties, and the vintage. With these focus, the CIVB supports the creation of a VRAI platform (Wine-Research-Authenticity-Identity) within the ISVV (Institute of Vine and Wine Sciences). This platform aims to develop analytical tools to guarantee the origin of a wine. Quantitative Nuclear Magnetic Resonance (qNMR) may be a great tool to help authenticate wines. The acquisition of a large number of wine parameters requires a small volume (a few hundred microliters) and the analysis is performed in a few minutes. This innovative analytical technique can therefore be useful to characterize wines quality and authenticity particularly in the context of priceless wine. 

A NMR-based metabolomics method was developed to semiautomatically quantify many wine components [1]. An original approach based on similarity score (s-score) was developed for wine comparison. Using this approach, a comparative evaluation of the results obtained for three sets of authentic high-valued wines and suspect wines was studied with two methodologies: (i) usual wine analysis, based on the use of multiple techniques, which is the traditional way of analysis for wine authentication and (ii) q-NMR profiling [2]. In order to consider a global aging uncertainty, samples from the same batch from old vintages were analyzed to estimate aging impact on wine composition. Results showed that q-NMR can detect cases of fraud by comparison with the original wine provided by the estate, according to conclusions of official methods. 

More, a database of commercial French wines was built with q-NMR data to examine the specific Bordeaux red wines fingerprinting. Several statistical analyses were performed to classify wines according to their geographical origin, vintage. Results revealed a singular imprint of Bordeaux wines in comparison with other French wines, with classification rates ranging from 71 % to 100 %. These analysies highlighted several specific metabolites of Bordeaux red wines and showed the influence of terroir in the discrimination. Also, Bordeaux subdivisions were investigated, and effects of wines evolution during bottle aging and vintage were pointed out. These studies provide a global and practical description of the potential of q-NMR for wine authentication. 

[1] Gougeon, L., Da Costa, G., Le Mao, I., Ma, W., Teissedre, P. L., Guyon, F., & Richard, T. (2018). Wine Analysis and Authenticity Using 1H-NMR Metabolomics Data: Application to Chinese Wines. Food Analytical Methods, 11(12), 3425-3434. 
[2] Gougeon, L., Da Costa, G., Richard, T., & Guyon, F. (2019). Wine Authenticity by Quantitative 1H NMR Versus Multitechnique Analysis: a Case Study. Food Analytical Methods, doi: 10.1007/s12161-12018-01425-z.

DOI:

Publication date: June 19, 2020

Issue: OENO IVAS 2019

Type: Article

Authors

Tristan Richard, Louis Gougeon, Grégory Da Costa, François Guyon

1.Université de Bordeaux, OEnologie EA 4577, USC 1366 INRA, INP, Molécules d’Intérêt Biologique (Gesvab), ISVV, 210 chemin de Leysotte, 33882 Villenave d’Ornon, France
2.Service Commun des Laboratoires, 3 avenue du Dr. Albert Schweitzer, 33600 Pessac, France

Contact the author

Keywords

wine, authenticity, qNMR, multivariate statistics 

Tags

IVES Conference Series | OENO IVAS 2019

Citation

Related articles…

Leaf removal to regulate fruit ripening in Cabernet-Sauvignon

Aim: Under the effects of climate change it is becoming increasingly common to observe excessively fast sugar accumulation while anthocyanin and flavour development are lagging behind. Understanding the impact of different leaf removal techniques on ripening will provide vineyard managers with a canopy management strategy suitable for

Screening sensory-directed methodology for the selection of non-saccharomyces wine yeasts based on perceived aroma quality

The present work contributes by developing a rapid sensory-directed methodology for the screening and selection of high quality wines with different sensory profiles Therefore, Verdejo and Tempranillo musts were fermented with 50 different yeasts each under controlled laboratory conditions. Resulting samples were firstly categorized according to five levels of quality by a panel of wine professionals (Sáenz-Navajas, Ballester et al. 2013). Higher quality samples were described by flash profiling by a semi-trained panel
(Valentin, Chollet et al. 2012) and most distinctive samples were screened by gas chromatography-olfactometry (GC-O) (López, Aznar et al. 2002).

Impact of climate change on the viticultural climate of the Protected Designation of Origin “Jumilla” (SE Spain)

Protected Designation of Origin “Jumilla” (PDO Jumilla) is located in the Spanish provinces of Albacete and Murcia, in the South-eastern part of the Iberian Peninsula, where most of the models predict a severe impact of climate change in next decades. PDO Jumilla covers an area of 247,054 hectares, of which more than 22,000 hectares

REDWINE project: use of Chlorella vulgaris to prevent biotic and abiotic stress in Palmela’s region, Portugal, vineyards

The new EU Green Deal aims to achieve GHG emissions reduction by at least 55% by 2030 and a climate neutral EU economy by 2050.
REDWine concept will be realized through the establishment of an integrated Living Lab demonstrating the viability of the system at TRL 7. The Living Lab will be able to utilize 2 ton of fermentation off-gas/year (90% of total CO2 produced in the fermenter) and 80 m3 of liquid effluent (100% of the liquid effluent generated during fermenter washing) to produce 1 ton (dry weight) of Chlorella biomass/year. This biomass will be processed under a downstream extraction process to obtain added-value extracts and applied in food, cosmetic and agricultural end-products and to generate a new EcoWine. REDWine will focus on the recovery of off-gas from a 20.000L fermenter of red wine production existing in Adega Cooperativa de Palmela (ACP, located in Palmela, Portugal).

austrianvineyards.com: online viewer of all designations of Austrian wine

To digitally record and present all the origins of Austrian wines in the same perfect and clear way was the motivation for the Austrian Wine Marketing Board (Austrian Wine) to start with the project in 2018. In June 2021 the results were presented to the public in an online viewer showing all the designations of Austrian wine, available at https://austrianvineyards.com in a largely barrier-free manner. The online viewer provides tailored individual maps fitted to the respective zoom level. The smallest unit of wine-origins in Austria is called Ried and is displayed in a plot-specific manner highlighting areas under vine. Information on the Ried include administrative district, winegrowing municipality, cadastral municipality, large collective vineyard site, specific winegrowing region, generic winegrowing region, winegrowing area and, in many cases, an illustrative picture. Complementary data on the size, elevation (minimum-maximum), orientation (in 8 sectors plus flat) and gradient (minimum, maximum, average) are based on the area under vine according to the EU’s Integrated Administration and Control System. Additional information covers climate data. The diagrams are taken from the monthly breakdown of data in the annals of the Central Institute for Meteorology and Geodynamics, Austria provide a display of values for air temperature, precipitation, and sunshine hours for the reference year and the long-term average. Seasonal aggregated data on temperature, precipitation, and sunshine hours complete the display. Short descriptions with emphasis on geology and soil, field name in historical maps, etymology of the denomination, and main planted variety complements the available information for the main designations in the online viewer. These descriptions are compiled by winegrowers, geologists, historians, and journalists. All the information and data can be extracted to a pdf-file. Printed vineyard maps are also available. Missing content regarding wine origins in Styria will be completed in winter 2021/22.