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International Journal of Microbiology
Volume 2014, Article ID 897428, 11 pages
http://dx.doi.org/10.1155/2014/897428
Research Article

Molecular and Technological Characterization of Saccharomyces cerevisiae Strains Isolated from Natural Fermentation of Susumaniello Grape Must in Apulia, Southern Italy

1C.N.R.-Istituto di Scienze delle Produzioni Alimentari, Unità Operativa di Lecce, Via Provinciale Lecce-Monteroni, 73100 Lecce, Italy
2C.N.R.-Istituto di Scienze delle Produzioni Alimentari, Via Amendola 166/O, 70126 Bari, Italy

Received 26 July 2013; Accepted 16 October 2013; Published 9 January 2014

Academic Editor: José M. Pérez-Donoso

Copyright © 2014 Mariana Tristezza et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The characterization of autochthonous Saccharomyces cerevisiae strains is an important step towards the conservation and employment of microbial biodiversity. The utilization of selected autochthonous yeast strains would be a powerful tool to enhance the organoleptic and sensory properties of typical regional wines. In fact, indigenous yeasts are better tailored to a particular must and because of this they are able to praise the peculiarities of the derived wine. The present study described the biodiversity of indigenous S. cerevisiae strains isolated from natural must fermentations of an ancient and recently rediscovered Apulian grape cultivar, denoted as “Susumaniello.” The yeast strains denoted by the best oenological and technological features were identified and their fermentative performances were tested by either laboratory assay. Five yeast strains showed that they could be excellent candidates for the production of industrial starter cultures, since they dominated the fermentation process and produced wines characterized by peculiar oenological and organoleptic features.