title: [Yeasts associated with spontaneous fermentation processes in wines from Ribeiro. Analysis of homo/heterothallism and the killer system of S. cerevisiae strains].
abstract: A taxonomic analysis has been carried out concerning the different yeast species involved in spontaneous fermentations of Ribeiro wine. The results revealed the presence of 15 species belonging to 7 genera: Saccharomyces, Torulaspora, Dekkera, Saccharomycodes, Debaryomyces, Kloeckera and Candida. Within the genus Candida a high number of species was detected. The 28 isolated strains of S. cerevisiae showed with some exceptions, a remarkable sporulation ability and viability of the meiotic products. All the strains were homothallic. Among all S. cerevisiae strains, 6 exhibited killer K2 activity with higher isolation percentages in intermediate fermentations than in late fermentations.
authors.affiliation: Departamento de Microbiología, Facultad de Farmacia, Universidad de Santiago de Compostela, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Cansado
authors.forename: E
authors.initials: E
authors.lastname: Longo
authors.forename: D
authors.initials: D
authors.lastname: Agrelo
authors.forename: T G
authors.initials: TG
authors.lastname: Villa
mesh_terms: D005285:Fermentation; D010641:Phenotype; D012441:Saccharomyces cerevisiae / Q000502:physiology*; D013030:Spain; D013170:Spores; D014920:Wine; D015003:Yeasts / Q000145:classification* / Q000302:isolation & purification
vernacular_title: Levaduras asociadas a procesos de fermentación espontánea en vinos de Ribeiro. Análisis del homo/heterotalismo y sistema killer de las cepas de S. cerevisiae.