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A molecular genetic study of natural strains of Saccharomyces isolated from Asturian cider fermentations

Identificadores del recurso

Suárez Valles, B.; Pando Bedriñana, R.; González García, A.; Querol Simón, A. A molecular genetic study of natural strains of Saccharomyces isolated from Asturian cider fermentations. Journal of Applied Microbiology. 2007; 103 (4): 778–786.

1364-5072

http://ria.asturias.es/RIA/handle/123456789/923

Procedència

(Repositorio Institucional de Asturias: RIA)

Fitxa

Títol:: A molecular genetic study of natural strains of Saccharomyces isolated from Asturian cider fermentations
Tema:: Cider; Indigenous yeast; Saccharomyces bayanus; Saccharomyces cerevisiae; Publicado
Descripció:: Aims: To analyse the genetic diversity and the dynamics of Saccharomyces strains in spontaneous fermentation in ciders. The effect of the cellar, harvest and cider-making technology were evaluated. Methods and Results: The ecology of spontaneous cider fermentations in the same cellar (Asturias) was studied for two consecutive harvests (2000 and 2001) by using mtDNA restriction analysis. Our results showed that there was a succession of genetically different strains of Saccharomyces during cider production. In general, strains of Saccharomyces bayanus species predominated at the early fermentation steps (begining and ⁄ or tumultuous fermentations), while Saccharomyces cerevisiae yeasts were the most abundant at the end of the fermentation. Five S. bayanus strains (patterns III, VII, VIII, XV and XVII) were present at significant frequencies in all the experimental tanks during the two consecutive years. The results of the cluster analysis (unweighted pair group method using average linkage) showed higher similarities for the patterns III, XV, VII and VIII. Therefore, these strains should be considered associated with the microbiota of this cellar. Conclusions: A high polymorphism within populations of Saccharomyces was found throughout the different stages of Asturian production of cider. In all the cider fermentations, a variable number of S. bayanus and S. cerevisiae strains was always present. Our results indicate, over the period of time studied, the existence of the natural microbiota in the cellar. Significance and Impact of the Study: This study has allowed us to gain a better understanding of the role of wild Saccharomyces yeast in Asturian cider fermentations.
Font:: 778;786
Idioma:: English
Relació:: Journal of Applied Microbiology; 103; Sí, esta versión ha sido citada
Autor/Productor:: Suárez Valles, Belén; Pando Bedriñana, Rosa; González García, A.; Querol Simón, A.
Editor:: Wiley-Blackwell
Drets:: http://creativecommons.org/licenses/by-nc-sa/3.0/deed.es
Data:: 2011-05-06T08:14:25Z; 2007-10
Tipo de recurso:: article
Format:: application/pdf

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