RT conference output
T1 Taxonomic singularities of the veil of Flor yeasts in Fino Wines from the D.O. Jerez-Xérèz-Sherry
A1 Cantoral Fernández, Jesús Manuel
A1 Ruiz Muñoz, Marina
A1 Hernández Fernández, María
A1 Florido-Barba, Antonio
A1 Villanueva Llanes, María de la Paz
A1 Pizzi, Simona
A1 Cordero Bueso, Gustavo Adolfo
A2 BiomedicinaBiotecnología y Salud Pública
AB The veil of “Flor yeasts” are responsible for the biological aging process of wines produced in theD.O. of Jerez and Sanlúcar de Barrameda (Finos and Manzanillas) in the province of Cádiz and Fino in theD.O. Montilla-Moriles in the province of Córdoba, as well as in other wine-growing regions of the world, suchas France, South Africa, California, Sardinia or Hungary. The first attempts to classify these flor veil yeastswere based on biochemical assays of sugar assimilation and fermentation. Thus, it was concluded that theyeasts involved in biological aging belonged all to Saccharomyces cerevisiae, distinguishing four subspecies orphysiological races: beticus, cheresiensis, montuliensis and rouxii. On the other hand, molecular techniques,which allow the characterization of oenological yeasts and discriminate between the different strains, areusually pulsed field electrophoresis (PFGE), the analysis of the polymorphism for the length of the restrictionfragments (RFLP) of mitochondrial DNA, and multiplex PCR of microsatellites. Recent studies in ourlaboratory show the existence of at least 9 different genotypes of S. cerevisiae veil of flor species, based on thestudy of microsatellites (SSR-PCR). In addition, we have detected the presence of some species of nonSaccharomyces yeasts not described previously.
PB EDP Sciences
SN 2117-4458
YR 2023
FD 2023
LK http://hdl.handle.net/10498/32638
UL http://hdl.handle.net/10498/32638
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 05-nov-2026