RT Journal Article
T1 Lachancea thermotolerans fermentative metabolism is enhanced by chitosan under winemaking conditions
A1 Vicente, Javier
A1 Manea, Paul-Petrut
A1 Benito, Santiago
A1 Marquina Díaz, Domingo
A1 Kelane, Niina
A1 Yang, Baoru
A1 Santos de la Sen, Antonio
AB Wine industry is currently exploring different alternatives to sulphur dioxide as an antimicrobial agent, and chitosan is emerging as a highly promising option due to its multiple applications. In the context of climate change, the use of Lachancea thermotolerans to regulate pH and acidity levels during fermentation has become a promising alternative to other physicochemical approaches. This work analysed the impact of chitosan in sequential-mixed fermentations between L. thermotolerans and Saccharomyces cerevisiae. The presence of chitosan significantly affected the overall fermentation kinetics, resulting in faster fermentations and lower residual sugars, all without an increase in ethanol production. Wines produced under these conditions exhibited increased lactic acid levels (up to 50% more) and decreased malic acid content. This differences significantly influenced final pH (around 0.2 units) and acidity content (up to 1.65 g/L more) when compared to sulphur dioxide-supplemented controls. Chitosan also notably affected to other fermentative by-products, such as glycerol, contributing to improved wine complexity and quality. The addition of chitosan in wine fermentation impacted not only the fermentative performance of key non-Saccharomyces yeasts but the overall quality of the final product. This study provides new insights into the different effects of chitosan during the wine fermentative process.
PB Elsevier
SN 0023-6438
YR 2024
FD 2024-02
LK https://hdl.handle.net/20.500.14352/103874
UL https://hdl.handle.net/20.500.14352/103874
LA eng
NO Vicente J, Manea P-P, Benito S, Marquina D, Kelanne N, Yang B, et al. Lachancea thermotolerans fermentative metabolism is enhanced by chitosan under winemaking conditions. LWT 2024;196:115863. https://doi.org/10.1016/j.lwt.2024.115863.
NO 2024 Acuerdos transformativos CRUE
NO Ministerio de Ciencia e Innovación (España)
NO CDTI
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 18 abr 2025