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Peculiarities of flor strains adapted to Sardinian sherry-like wine ageing conditions

Budroni, Marilena and Zara, Severino and Zara, Giacomo and Pirino, Giorgia and Mannazzu, Ilaria Maria (2005) Peculiarities of flor strains adapted to Sardinian sherry-like wine ageing conditions. FEMS Yeast Research, Vol. 5 (10), p. 951-958. eISSN 1567-1364. Article.

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DOI: 10.1016/j.femsyr.2005.04.002

Abstract

Saccharomyces cerevisiae flor yeasts, which are subjected to stressful conditions during wine ageing, exhibit a number of characteristics which distinguish them from non-flor S. cerevisiae wine strains. In the present work, 22 flor and 14 non-flor S. cerevisiae wine strains are compared, in order to elucidate other possible peculiarities of these yeasts. The results obtained demonstrate that in contrast to the homothallic nature of the non-flor strains, 77% of the flor strains exhibit two variants of a semi-homothallic life cycle. Moreover, the flor-forming ability is shown to be inversely correlated to spore viability and the utilisation of maltose and galactose.

Item Type:Article
ID Code:2419
Status:Published
Refereed:Yes
Uncontrolled Keywords:Saccharomyces cerevisiae, life cycle, principal component analysis, flor, acetaldehyde
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/16 Microbiologia agraria
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze ambientali agrarie e biotecnologie agro-alimentari
Publisher:Elsevier
eISSN:1567-1364
Copyright Holders:©2005 Federation of European Microbiological Societies
Deposited On:18 Aug 2009 10:07

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