terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Limiting magnesium availability: a novel approach to managing brettanomyces spoilage in winemaking

Limiting magnesium availability: a novel approach to managing brettanomyces spoilage in winemaking

Abstract

Brettanomyces is a world-renowned yeast that negatively impacts the chemical composition of wines through the production of metabolites that negatively impact the sensory properties of the final product. Its resilience in wine conditions and ability to produce off-flavors make it a challenge for winemakers. Currently, the primary control technique involves adding sulfur dioxide (SO2); however, some Brettanomyces strains are developing resistance to this preservative agent. [1] Therefore, new management strategies are necessary to control this spoilage yeast.

 

Mineral nutrients could be a promising approach to control Brettanomyces growth in winemaking. Magnesium (Mg2+), is specifically recognized as a protective element against yeast stress and can prevent cellular death from temperature shock and ethanol. [2] In this study, the effect of mineral concentration on Brettanomyces metabolism under winemaking conditions was investigated. Brettanomyces sensitivity to Mg2+ limitation was assessed by culturing it in the presence of decreasing Mg2+ concentrations. While 1 mg/L of Mg2+ supported normal growth, concentrations below 0.5 mg/L significantly limited growth, and 0.1 mg/L was unable to support proliferation. Long-term Mg2+ deficiency resulted in permanent viability reduction.

 

This nutritional study identifies Mg2+ as essential for Brettanomyces metabolism and provides a starting point for designing experiments to manage Brettanomyces spoilage in wine, improving quality and stability. Understanding the physiology and nutritional requirements of Brettanomyces can lead to more informed decisions and innovative strategies for managing spoilage, resulting in better wine quality, consumer satisfaction, and higher profits for the wine industry. The study assists in finding alternatives to SO2 to produce fault-free wines that align with current wine consumer preferences. 

Acknowledgments:

The ARC Training Centre for Innovative Wine Production

The Australian Wine Research Institute

Pernod Ricard Winemakers

References:

1)  Bartel, C., et al. (2021). “Adaptive evolution of sulfite tolerance in Brettanomyces bruxellensis.” FEMS Yeast Research 21(5), https://doi.org/10.1093/femsyr/foab036.

2)  Birch, R. M. and G. M. Walker (2000). “Influence of magnesium ions on heat shock and ethanol stress responses of Saccharomyces cerevisiae.” Enzyme and Microbial Technology 26(9-10): 678-687, https://doi.org/10.1016/S0141-0229(00)00159-9.

 

DOI:

Publication date: October 5, 2023

Issue: ICGWS 2023

Type: Article

Authors

Giordano1-2, J. Macintyre3, A. Borneman1-4, P. Grbin1

1 Wine Science Discipline, School of Agriculture Food and Wine, Waite Research Institute, The University of Adelaide, Urrbrae, South Australia 5064, Australia
2 Australian Research Council Training Centre for Innovative Wine Production, The University of Adelaide, Urrbrae, South Australia 5064, Australia
3 Pernod Ricard Winemakers, 1914 Barossa Valley Way, Rowland Flat, SA 5352, Australia
4 The Australian Wine Research Institute, PO Box 197, Glen Osmond, Adelaide, SA 5064, Australia

Contact the author*

Keywords

Brettanomyces, wine spoilage, sulfur dioxide, mineral nutrients, magnesium, wine quality

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

INTEGRAPE guidelines and tools: an effort of COST Action CA17111

INTEGRAPE was a European interdisciplinary network for “data integration to maximize the power of omics for grapevine improvement” (CA17111, https://integrape.eu/), funded by the European COST Association from September 2018 to 2022. This Action successfully developed guidelines and tools for data management and promoted the best practices in grapevine omics studies with a holistic future vision of: “Imagine having all data on grapevine accessible in a single place”.

Predicting provenance and grapevine cultivar implementing machine learning on vineyard soil microbiome data: implications in grapevine breeding

The plant rhizosphere microbial communities are an essential component of plant microbiota, which is crucial for sustaining the production of healthy crops. The main drivers of the composition of such communities are the growing environment and the planted genotype. Recent viticulture studies focus on understanding the effects of these factors on soil microbial composition since microbial biodiversity is an important determinant of plant phenotype, and of wine’s organoleptic properties. Microbial biodiversity of different wine regions, for instance, is an important determinant of wine terroir.

Model-assisted analysis of the root traits underlying RSA genotypic diversity in Vitis: a promising approach for rootstock selection?

By dissecting the root system architecture (RSA) into its underpinning components (e.g. root emission, axial growth, radial growth, branching, root direction or tropism) and identifying the relationships between them, functional-structural 3D root models are promising tools for analyzing the diversity and complexity of root system phenotypes with Genotype × Environment interactions. The model parameters are assumed to be synthetic traits, less influenced by the environment, and consequently with less polygenic architectures than the integrative RSA traits they drive. Root models can serve as a basis for in silico development of root system ideotypes by highlighting the developmental processes and parameters that most likely influence RSA fitness.

Mapping grapevine metabolites in response to pathogen challenge: a Mass Spectrometry Imaging approach

Every year, viticulture is facing several outbreaks caused by established diseases, such as downy mildew and grey mould, which possess different life cycles and modes of infection. To cope with these different aggressors, grapevine must recognize them and arm itself with an arsenal of defense strategies.
The regulation of secondary metabolites is one of the first reactions of plants upon pathogen challenge. Their rapid biosynthesis can highly contribute to strengthen the defense mechanisms allowing the plant to adapt, defend and survive.

The colour pattern of flower arrangements influence wine tasters’ sensory description

The arrangements of flowers and wine counterparts are inextricably linked. Whether a fundamental aspect of tablescaping or acolytes to broader entertainment rituals, they have an entangled history since ancient times. The aim of this contribution is to verify the influence of visually delicate and robust flower arrangements on individual description of wines. Changes in the sensory description of wines were investigated during subjects’ (thirty-two participants) exposure to three different conditions: the presence of delicate, robust, or totally absent flower arrangements. In each condition, the same two wines were blind tasted: a wine previously defined as delicate – a Pinot Noir from Australia, and a wine known for its robust character – a Tannat from Uruguay.