Macrowine 2021
IVES 9 IVES Conference Series 9 Effect of non-wine Saccharomyces yeasts and bottle ageing on the release and generation of aromas in semi-synthetic Tempranillo wines

Effect of non-wine Saccharomyces yeasts and bottle ageing on the release and generation of aromas in semi-synthetic Tempranillo wines

Abstract

AIM: Explore the variability and contribution of non-wine Saccharomyces yeasts and bottle aging on the release and generation of aromas of semi-synthetic Tempranillo wines, together with an in-depth study of the capacity of these strains to provide good fermentative and oenological qualities.

METHODS: 6 Saccharomyces yeasts strains of different species and origins performed fermentations in semi-synthetic must containing polyphenolic and aroma precursor Tempranillo extract. The resulting wines were subjected to accelerated anoxic aging simulating bottle aging. The aroma compounds released during fermentation and those contained in young and aged wines and must were liquid-liquid extracted and analysed by Gas Chromatography-Olfactometry (GC-O), GC-FID (flame ionization detector) and GC-Mass Spectrometry.

RESULTS: Among the compounds volatilised during fermentation, one of varietal origin was tentatively detected, 4-methyl-4-mercaptopenta-2-one (4MMP). The natural yeasts likely to introduce positive aroma notes to young and aged Tempranillo wines were E1 (S. eubayanus), C3, C2 (S. cerevisiae), K3 (S. kudriavzevii) and U1 (S. uvarum) by the highest production of ethyl esters, lactones, β-ionone and terpenes related to floral and fruity aroma. After aging, β-damascenone, riesling acetal, vitispirane A/B, linanool oxide and massoia lactone were found, nerol was no longer detected and β-linalool was not affected. In addition, there was a modulating effect by the yeasts, increasing or decreasing certain compounds favoured by aging. Regarding this effect, C2 strain excelled due to the large increase in ethyl leucate compared to its young wine and the rest of the aged wines.

CONCLUSIONS: Most compounds were highly increased by aging while yeasts at species and strain level were able to modulate the varietal and fermentative aroma profile differentially in both young and aged semi-synthetic Tempranillo wines.

DOI:

Publication date: September 27, 2021

Issue: Macrowine 2021

Type: Article

Authors

Dolores Pèrez, Marie DENAT, José María HERAS, José Manuel GUILLAMÓN, Vicente FERREIRA, Amparo QUEROL

Lallemand Bio S.L., Barcelona, Spain Centro de Estudios de Enología, Estación Experimental Agropecuaria Mendoza, Instituto Nacional de Tecnología Agropecuaria (INTA) 5507, Mendoza, Argentina
Laboratory for Aroma Analysis and Enology (LAAE), Universidad de Zaragoza, Spain
Lallemand Bio S.L., Barcelona, Spain
Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain
Laboratory for Aroma Analysis and Enology (LAAE), Universidad de Zaragoza, Zaragoza, Spain
Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain

Contact the author

Keywords

non-wine saccharomyces yeasts; fruity ethyl esters, acetates esters, varietal aroma, tempranillo, bottle-aging

Citation

Related articles…

Soil electrical resistivity, a new and revealing technique for precision viticulture

High resolution spatial information of soil electrical resistivity (ER) was gathered to assess the spatial variability patterns of vegetative growth of two commercial vineyards (Vitis vinifera L. cv.

A study on the oenological potentiality of the territory of a cooperative winery in Valpolicella (Italy)

A 3-year zoning study promoted by the Cooperative Winery Valpolicella (Negrar, Verona, Italy) was carried out on a wine territory of about 500 ha.

Culturable microbial communities associated with the grapevine soil in vineyards of La Rioja, Spain

The definition of soil health is complex due to the lack of agreement on adequate indicators and to the high variability of global soils. Nevertheless, it has been widely used as synonymous of soil quality for more than one decade, and there is a consensus warning of scientists that soil quality and biodiversity loss are occurring due to the traditional intensive agricultural practices.
In this work we monitored a set of soil parameters, both physicochemical and microbiological, in an experimental vineyard under three different management and land use systems: a) addition of external organic matter (EOM) to tilled soil; b) no tillage and plant cover between grapevine rows, and c) grapevines planted in rows running down the slope and tilled soil.

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.

Plastic debris at vines: carriers of pollutants in the environment?

Modern agriculture employs large amounts of plastics, such as mulching and greenhouse films, thermal covers, plant protection tubes and tying tape. The latter two types are very common in viticulture. Guard tubes are employed to protect young vines from mechanic and atmospheric damage, whilst polymeric tying tape has replaced natural-origin materials to hold the canopy of vines. Both materials are made on synthetic polymers, which include a range of additives to improve their environmental stability remaining in the environment of vineyards for years. During this time, they are exposed to the range of pesticides (fungicides, insecticides and in a lesser extend herbicides) applied to vines.