terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Applicability of grape native yeasts to enhance regional wine typicity

Applicability of grape native yeasts to enhance regional wine typicity

Abstract

The universalization in wine production has been restricting the imprint of terroir in regional wines, resulting in loss of typicity. Microbes are the main driving force in wine production, conducting fermentation and originating a myriad of metabolites that underly wine aroma. Grape berries harbor an ecological niche composed of filamentous fungi, yeasts and bacteria, which are influenced by the ripening stage, cultivar and region. The research project GrapeMicrobiota gathers a consortium from University of Zaragoza, University of Minho and University of Tours and aims at the isolation of native yeast strains from berries of the wine region Douro, UNESCO World Heritage, towards the production of wines that stand out in the market for their authenticity and for reflecting their region of origin in their aroma. A catalogue of over 200 yeast isolates was obtained from berries of cv. Sousão, Touriga Nacional and Viosinho, following enrichment steps in selective medium[1], and Saccharomyces cerevisiae strains were selected to conduct fermentations in laboratory and in cellar conditions. The volatile profiles of young wines were analysed by GC-FID and SPE Ion-trap MS[2], and compared to those obtained in fermentations carried out by commercial strains used by local farmers. Results showed clear distinctions between volatile profiles of wines produced with native strains or with commercial strains, opening perspectives for the industrial use of native yeasts for enhancing regional wine aroma.

Acknowledgements: This work was supported by FCT project GrapeMicrobiota (PTDC/BAA-AGR/2691/2020), “Contrato-Programa” (UIDB/04050/2020), CoLAB VINES & WINES, Sogevinus S.A., Diputación General de Aragón (T29_23) and European Social Fund.

References:

1) Martins V. et al. (2022) A catalogue of cultivable yeasts from the microbiota of grape berries cv. Vinhão and Loureiro. OENO One, 56(3): 257-270, DOI 10.20870/oeno-one.2022.56.3.5462

2)  Martins V. et al. (2020) Vineyard calcium sprays shift the volatile profile of young red wine produced by induced and spontaneous fermentation. Food Res. Int., 131: 108983, DOI 10.1016/j.foodres.2020.108983

DOI:

Publication date: October 10, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Ricardo López1*, Viviana Martins2, Hernâni Gerós2

1Laboratory for Flavor Analysis and Enology (LAAE), Department of Analytical Chemistry, Faculty of Sciences, Universidad de Zaragoza, Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA) Associate Unit to Instituto de las Ciencias de la Vid y del Vino (ICVV) (UR-CSIC-GR), E-50009 Zaragoza, Spain
2Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal

Contact the author*

Keywords

native yeasts, regional terroir, wine typicity

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Effects of progeny in the modulation of the response to water stress in isohydric and anisohydric varieties

Each grapevine variety has a specific water use regulation response under drought, and it is still unclear whether this regulation results from innate genotypic behavior (iso- and anisohydric), or is a response to environmental factors, namely recurrent water stress priming effects. In the present work, we explored the influence of the field-grown genotypes’ drought memory in the drought-response phenotype of their vegetative progenies, in Trincadeira (isohydric) and Castelão (anisohydric) varieties under a drought event followed by recovery in a glasshouse. Cuttings from both cultivars subjected to full irrigation (FI) and non-irrigation (NI) treatments for 5 consecutive years were used.

Read More

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”.

Read More

Effect of soil particle size on vine water status, leaf ABA content and berry quality in Nebbiolo grapes

The root and shoot abscisic acid (ABA) accumulation in response to water deficit and its relation with stomatal conductance is longtime known in grapevine. ABA-dependent and ABA-independent signalling response to osmotic stress coexist in sessile plants. In grapevine, the signaling role of ABA in response to water stress conditions and its influence on berry quality is critical to manage grapevine acclimation to climate change.

Read More

Preliminary study of extraction of polysaccharides from pomace by high powered ultrasonic combined with enzymes

Red grape pomace can be an important source of polysaccharides, but currently they are little studied and even less with viable and environmental extraction processes (green extraction). These green techniques must be able to break the cell wall so that the compounds contained in the cells, including polysaccharides, are released and can have a great influence on extraction yields, the chemical structure of polysaccharides and applications in wines. Amongst the emerging green techniques most applied to the extraction of bioactive compounds, such as polysaccharides, high-power ultrasound (US) and enzyme-assisted extraction stand out.

Read More

Biodiversity and biocontrol ability of Trichoderma natural populations in soil vineyards from Castilla y León region (Spain)

Trichoderma is a microorganism present in many agricultural soils and some of its species could be used as natural biological control agents. In this work, the presence of natural populations of Trichoderma was estimated in soil vineyard and its biocontrol capacity against Phaeoacremonium minimum, one of the main agent causals of grapevine trunk diseases instead of using pesticides. Moreover, physicochemical variables in soil such as pH, organic matter and nutrients were evaluated to determine a possible correlation to natural populations of Trichoderma.

Read More