OENO IVAS 2019 banner
IVES 9 IVES Conference Series 9 Bio-protection by one strain of M. Pulcherrima: microbiological and chemical impacts in red wines

Bio-protection by one strain of M. Pulcherrima: microbiological and chemical impacts in red wines

Abstract

In enology, bio-protection consists in adding bacteria, yeasts or a mixture of microorganisms on grape must before fermentation in order to reduce the use of chemical compounds such as sulphites. 
More particularly, non-Saccharomyces yeasts are used as a total or partial alternative to sulphites. 
However, scientific data capable of proving the effectiveness of adding these yeasts on grape must remain scarce. A single study in white winemaking showed that early addition of a non-Saccharomyces T. delbrueckii strain could be a microbiological and chemical alternative to sulphites (Simonin et al., 2018). 
However, there is a lack of scientific data concerning red winemaking where the process allows to leave the yeasts added during the whole winemaking. This study reports for the first time the analysis of microbiological and chemical effects of one Metschnikowia pulcherrima strain, inoculated at the beginning of the red winemaking process in three wineries as an alternative to sulphiting. The implantation of the M. pulcherrima was successful in all the wineries and effectively limited the development of spoilage microorganisms in the same way as the addition of sulphites. The addition of non-Saccharomyces strain could protect must and wine from oxidation as demonstrated by the proanthocyanidin and anthocyanin analysis. 
Adding M. pulcherrima had no effect on wine volatile compounds and sensorial analysis. However, the untargeted analysis by FTICR-MS highlighted a bio-protection signature and an activation of certain metabolic pathways.

DOI:

Publication date: June 10, 2020

Issue: OENO IVAS 2019

Type: Article

Authors

Scott Simonin, Hervé Alexandre, Jordi Ballester, Philippe Schmitt-Kopplin, Beatriz Quintanilla-Casas, Stefania Vichi, Dominique Peyron, Chloé Roullier-Gall, Raphaëlle Tourdot-Marécha

UMR PAM, Univ. de Bourgogne Franche Comté/Agrosup Dijon, Equipe VAlMiS, IUVV, Dijon (France)
CSGA, Univ. de Bourgogne, France
Analytical Food Chemistry, Technische Universität München, Germany
INSA – XaRTA, University of Barcelona, Spain

Contact the author

Keywords

Wine bio-protection, Metschnikowia pulcherrima, Metabolomic, Volatile and phenolic compounds

Tags

IVES Conference Series | OENO IVAS 2019

Citation

Related articles…

From grapevines to extreme environments … and back?

I performed my PhD in grapevine physiology under the supervision of Dr. H. Medrano, standing in the vineyards from pre-dawn to sunrise during many hot, wet and sunny days with my colleagues J.M.E. and J.B. I also spent many days and nights facing ticks year-round working in Mediterranean macchias with J.Gu. and M.M. Later I was able to supervise PhD students on grapevines – like A.P. and M.T. – and on Mediterranean vegetation – like J.Gal. With the incorporation to the group of M.R.-C. ‘the puzzle’ was completed and, combining the aforementioned studies, we could conclude (more than 20 years ago) things like: (1) stomatal conductance is the best proxy for ‘water stress’ in studies on photosynthesis; (2) steady-state chlorophyll fluorescence retrieves photosynthesis under saturating light; (3) photoinhibition is not a major photosynthetic limitation under water stress; (4) mesophyll conductance instead is; and (5) mesophyll conductance is a major driver of leaf water use efficiency.

Use of antisense RNA technology to modulate gene expression in Œnococcus oeni

Œnococcus oeni is a wine-associated lactic acid bacterium performs the malolactic fermentation, which improves the taste and aromatic complexity of many wine.

Introducing heterogeneity measurements in terroir studies. Application in the região demarcada do douro (n portugal)

Terroir zoning studies have to manage the heterogeneity and complexity of the landscape properties and processes. The varying geology is one of the main landscape properties conditioning the spatial variability of terroirs.

Les paysages viticoles des régions Vale Dos Vinhedos et Monte Belo (Brésil), un lien avec l’Etrurie

[lwp_divi_breadcrumbs home_text="IVES" use_before_icon="on" before_icon="||divi||400" module_id="publication-ariane" _builder_version="4.19.4" _module_preset="default" module_text_align="center" module_font_size="16px" text_orientation="center"...

From genes to vineyards: system biology and new breeding technologies for water stress tolerance in grapevines

One of the major challenges for food security and sovereignty is to produce stress-tolerant plants without introducing foreign DNA, because the legislative process, that bans transgenics, challenges us to find new solutions for producing plants that can survive the drought. To achieve this goal, we need to identify genes that can be modified to improve stress tolerance in plants. In this work, we present an online tool for exploring the transcriptome of grapevines under water stress, which is one of the most important abiotic stresses affecting viticulture. The tool is based on a comprehensive collection of rna-seq data from 997 experiments, covering four different tissues (leaf, root, berry, and shoot), various levels of water stress, and diverse genetic backgrounds (cultivars and rootstocks) with different levels of tolerance to water stress.