Abstract
A pressing necessity of the Apulian wine industry is to be able to pilot and to control wine production to obtain wines with peculiar characteristics and with the typicality guaranteed by the denominations of origin. The employment of selected autochthonous yeast strains would be a potent instrument to improve the organoleptic and sensory characteristics of typical regional wines. In fact, indigenous yeasts are better adapted to a specific must and therefore they are able to exalt the peculiarities of the derived wine. The present work describes the genetic diversity of autochthonous Saccharomyces cerevisiae strains derived from natural must fermentations of an important Apulian grape cultivar, denoted as “Primitivo”. The yeast strains showing the best technological and oenological properties were selected, and their fermentative performances were assayed by either laboratory tests or industrial scale fermentations. Two autochthonous yeast strains were shown to be good candidates as industrial starter cultures, since they dominated the fermentation process and produced wines characterized by peculiar oenological and organoleptic features, that were judged very pleasant by a panel of winemakers.
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Acknowledgements
This research was supported by a grant from the Regione Puglia Project PS_008 - INNOWINE- "Biotecnologie innovative per il miglioramento della qualità e sicurezza dei vini tipici pugliesi". The authors wish to thank Mr. Giovanni Colella for his valuable technical assistance. We would also like to thank the native speaker, Prof. H. Caffery, for proofreading and providing valuable linguistic advice.
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This paper is part of the special issue “WINE MICROBIOLOGY AND SAFETY: FROM THE VINEYARD TO THE BOTTLE (MICROSAFETYWINE),19-20 November, 2009, Martina Franca (Italy)”.
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Grieco, F., Tristezza, M., Vetrano, C. et al. Exploitation of autochthonous micro-organism potential to enhance the quality of Apulian wines. Ann Microbiol 61, 67–73 (2011). https://doi.org/10.1007/s13213-010-0091-7
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DOI: https://doi.org/10.1007/s13213-010-0091-7