Enoforum 2021
IVES 9 IVES Conference Series 9 Enoforum Web 9 Enoforum Web Conference 2021 9 Cellar session 9 Combined use of Lachancea thermotolerans and Schizosaccharomyces pombe in winemaking

Combined use of Lachancea thermotolerans and Schizosaccharomyces pombe in winemaking

Abstract

Commercial red wines use the malolactic fermentation process to ensure stability from a microbiological point of view. In this second fermentation, malic acid is converted into L-lactic acid under controlled steps. However, this process is not free from possible collateral effects able to produce off-flavors, wine quality loss and human health problems. In warm viticulture regions such as the south of Spain, the risk of suffering a deviation during the malolactic fermentation process increases for the high must pH. This contributes to produce wines with high volatile acidity and biogenic amines. The work develops a method that comprises combining the use of two non-Saccharomyces yeast as an alternative to the traditional malolactic fermentation in specific difficult scenarios. In this method, malic acid is consumed by Schizosaccharomyces pombe, thus achieving the microbiological stabilization aim before bottling, while Lachancea thermotolerans produces lactic acid in order not to reduce and even increase the acidity of wines produced from low acidity musts. This technique reduces the risks inherent to the malolactic fermentation process when performed in warm regions with high potential alcohol degree and pH. The result is more fruity wines that contain less acetic acid and biogenic amines. 

DOI:

Publication date: April 23, 2021

Issue: Enoforum 2021

Type: Article

Author

Santiago Benito

Department of Chemistry and Food Technology, Polytechnic University of Madrid, Ciudad Universitaria S/N, 28040 Madrid, Spain

Contact the author

Tags

Enoforum 2021 | IVES Conference Series

Citation

Related articles…

From average to individual fruit, a paradigm shift for accurate analysis of water accumulation and primary metabolism in developing berries

Presentknowledge about grape development is mainly driven by the premise that a typical berry would follow the same kinetics as the population average

Impact of toasting on oak wood aroma: creation of an oak wood aroma wheel

The impact of toasting process to produce aroma from oak wood intrinsic composition is well documented. It is admitted that such complexity contribute to the wine quality after barrel ageing. Despite our knowledge on the molecular identification of aroma impact compounds of oak wood, little research have been carried out, on a sensory level, on the aroma diversity of toasted oak wood.

Achieving Tropical Fruit Aromas in White Wine through Innovative Winemaking Processes

Tropical fruit aroma is highly desirable in certain white wine styles and there is a significant group of consumers that show preference for this aroma.

Evaluation of intra-vineyard spatial and temporal variability of leaf area index using multispectral images obtained by satellite (Landsat 8, Sentinel-2) and unmanned aerial vehicle platforms

Estimation of vineyard leaf area index (LAI) is an important aspect for the winegrowers. However, tracking and monitoring are difficult tasks due to time constraints. Satellite and unmanned aerial vehicle (UAV) imaging have become a practical monitoring method for LAI. Nevertheless, for a proper LAI determination, the image’s spatial resolution is a key factor, since low-resolution images are incapable of distinguishing between adjacent vines due to the large area covered in each pixel, this leads to misinterpretation or generalisation of vineyard information.

Characterization and modelling of water flow on vineyard soil. Effect of compaction and grass cover

In the Burgundy vineyard, frequent tractor traffic and management of inter-rows alternating grass cover and chemical weed-control lead to structural soil contrast between row and inter-row. The aim of this study was to characterize and model water flow in relation with topsoil structure modifications induced by these practices. Void ratio of the different soil volumes were determined using bulk density measurements.