Autor según el artículo: Balmaseda, Aitor; Rozes, Nicolas; Bordons, Albert; Reguant, Cristina;

Departamento: Bioquímica i Biotecnologia

Autor/es de la URV: Balmaseda Rubina, Aitor / Bordons de Porrata- Doria, Albert / Reguant Miranda, Cristina / Rozès, Nicolas Andre Louis

Palabras clave: Yeasts Wine Volatile Variable number Torulaspora delbrueckii Population dynamics Oenococcus oeni Non-saccharomyces Malolactic fermentation Lactic-acid bacteria Growth Grapes Dynamics Catalonia

Resumen: Background and Aims Torulaspora delbrueckii is being used increasingly as a starter for alcoholic fermentation (AF) because of its chemical modulation of wine. Previous studies on this yeast in a natural must have shown a different Oenococcus oeni population by the end of MLF. In this study we aim to evaluate this aspect in a defined O. oeni strain consortium in a sterile grape must during winemaking. Methods and Results Before commencing AF with either S. cerevisiae or both T. delbrueckii and S. cerevisiae, the must was inoculated with a defined population of O. oeni strains. The use of T. delbrueckii determined the bacterial population at the end of MLF. Also, the inoculation of a selected strain after AF produced wines with different chemical composition to those fermented with the initial bacterial community. Conclusions Different yeast inoculation strategies modulate the O. oeni population, and this has an impact on the chemical composition of the wines. Moreover, the inoculation of a small O. oeni population in must leads to a process similar to spontaneous MLF. Significance of the Study Torulaspora delbrueckii can be used as a tool to modulate the O. oeni population and enhance the aromas related to MLF.

Áreas temáticas: Matemática / probabilidade e estatística Horticulture Food science & technology Ciências agrárias i Ciência de alimentos

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

Direcció de correo del autor: aitor.balmaseda@urv.cat cristina.reguant@urv.cat albert.bordons@urv.cat nicolasrozes@urv.cat aitor.balmaseda@urv.cat

Identificador del autor: 0000-0002-5036-1408 0000-0002-5320-8740 0000-0001-9718-3429

Fecha de alta del registro: 2023-03-05

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://onlinelibrary.wiley.com/doi/full/10.1111/ajgw.12526

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Australian Journal Of Grape And Wine Research. 28 (3): 374-382

Referencia de l'ítem segons les normes APA: Balmaseda, Aitor; Rozes, Nicolas; Bordons, Albert; Reguant, Cristina; (2022). Modulation of a defined community of Oenococcus oeni strains by Torulaspora delbrueckii and its impact on malolactic fermentation. Australian Journal Of Grape And Wine Research, 28(3), 374-382. DOI: 10.1111/ajgw.12526

DOI del artículo: 10.1111/ajgw.12526

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2022

Tipo de publicación: Journal Publications