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Occurrence of wine yeasts on grapes subjected to different pesticide treatments

Guerra, Emanuela and Sordi, Giorgia and Mannazzu, Ilaria Maria and Clementi, Francesca and Fatichenti, Fabrizio (1999) Occurrence of wine yeasts on grapes subjected to different pesticide treatments. Italian Journal of Food Science, Vol. 11 (3), p. 221-230. ISSN 1120-1770. Article.

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Abstract

As a contribution to the study and preservation of indigenous wine yeast populations, we initiated a programme of isolation and characterization of yeast strains from grapes of the Italian region of Marche. During the 1996 vintage, grape samples were collected from three groups of vineyards differing in the pesticide treatments given. Of the 279 yeasts isolated, thirty-nine were assigned to the species Saccharomyces cerevisiae. The majority of the isolates and all thirty-nine S. cerevisiae came from vineyards which had not been treated with systemic pesticides, indicating that these pesticides may exert a negative effect on the biodiversity of the grape microflora, and in particular on the occurrence of S. cerevisiae on grapes. The thirty-nine S. cerevisiae isolated were subjected to microfermentation mals, in which ten of them showed promising fermentative capabilities.

Item Type:Article
ID Code:4257
Status:Published
Refereed:Yes
Uncontrolled Keywords:Biodiversity, fermentative capabilities, Saccharomyces, wine yeast isolation
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:Chiriotti Editori
ISSN:1120-1770
Publisher Policy:Depositato per gentile concessione dell'Editore
Deposited On:23 Jul 2010 17:26

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