Macrowine 2021
IVES 9 IVES Conference Series 9 LC-MS based metabolomics discriminates premium from varietal chilean Cabernet Sauvignon cv. Wines

LC-MS based metabolomics discriminates premium from varietal chilean Cabernet Sauvignon cv. Wines

Abstract

Aim of the study was to investigate the metabolomic differences between Chilean Cabernet Sauvignon wines, divided according to their quality in two main groups: “Varietal” and “Premium”, and to point out metabolites tentative markers of their chemical signature and sensorial quality. Initially, 150 (50 x 3 biological replicates) experimental wines were produced by the same semi-industrial process, which covered 8 different Chilean valleys. The wine classification made by experts, divided the wines into two major groups (“Varietal” and “Premium”) and four subgroups (two for each major group). All the samples were analyzed according to a robust LC-MS based untargeted work-flow (Arapitsas et al 2018), and the proposed minimum reporting standards for chemical analysis of the Metabolomics Standards Initiative (Sumner et al 2007). The produced big-dataset was based on 7633 features for ESI- mode analysis and 9258 for ESI+ mode. After the quality control of the data, were found 150 tentative markers. The annotation of the markers was achieved by using the internal library, external databases and literature information. Between the Chilean Cabernet Sauvignon quality tentative markers were annotated N-compounds (e.g. peptides), stilbenoids, flavanols, anthocyanins and sulfonated compounds. In conclusion, this study allowed us to find metabolomic pathways and chemical reactions, and therefore propose new hypothesis, which could open new frontiers for the understanding of the Chilean Cabernet Sauvignon quality and terroir effect and provide new tools for the enology of precision in Chile.

DOI:

Publication date: September 24, 2021

Issue: Macrowine 2021

Type: Article

Authors

Vania Sáez,  Álvaro González, Panagiotis Arapitsas. 

Fondazione Edmund Mach.,Doreen Schober. Center for Research, and Innovation, Chile.  Fondazione Edmund Mach, Italy.

Contact the author

Keywords

cabernet sauvignon; quality; metabolomics; stilbenoids; anthocyanins; peptides; terroir

Citation

Related articles…

Understanding aroma loss during partial wine dealcoholization by vacuum distillation

Dealcoholization of wine has gained increasing attention as consumer preferences shift toward lower-alcohol or
alcohol-free beverages. This process meets key demands, including health-conscious lifestyles, regulatory
compliance, and the expanding non-alcoholic market [1-3].

Read More

Influence of climate change conditions (elevated CO2 and temperature) on the grape composition of five tempranillo (Vitis vinifera L.) Somatic variants

The current levels of greenhouse gas emissions are expecting to provoke a change on the environmental conditions which, among others, will include a rise of global mean surface temperature and an increment of atmospheric CO2 levels (IPCC, 2014), known as climate change. The response of grapevine (Vitis vinifera L.), one of the most important crops in Europe, from both a cultural and economic point of view, is not completely understood yet and the studies considering the interaction between factors are scarce. Besides, the potential variety of responses among somatic variants needs to be studied in order to be exploited in the avoidance of undesired traits linked to climate change (Carbonell‐Bejerano et al., 2015).

Read More

Comparison of the aroma profile in total and partial dealcoholisation of white and red wines by reverse osmosis

The increasing demand for low-alcohol and non-alcoholic wines has led to the development of advanced dealcoholisation techniques aimed at preserving wine quality while reducing ethanol content. Reverse osmosis is one of the most widely used membrane-based processes for the selective removal of ethanol [1].

Read More

Separation and elucidation of ethylidene-bridged catechin oligomers using preparative-HPLC and NMR

During wine aging, small amounts of oxygen are absorbed and initiate a cascade of oxidation reactions. These aging reactions create many products including ethylidene-bridged oligomers and polymers of endogenous polyphenols, like flavan-3ols.

Read More

Fruit set rate clonal variation explains yield differences at harvest in Malbec

Malbec is Argentina’s flagship variety, and it is internationally recognized for producing high-quality red wines. Fruit set rate is a major component in grapevine yield determination, and it is the outcome of multiple genetic and environmental interacting variables. Here, we characterized the reproductive performance of 25 Malbec clones grown under homogeneous conditions in a 23-years old experimental plot. We measured traits near flowering (like the number of flowers per inflorescence) and at harvest (including the number of berries per cluster and berry weight), during two consecutive seasons (2022 and 2023).

Read More