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RESEARCH PRODUCT
Indigenous yeast communities in the environment of ‘‘Rovello bianco’’ grape variety and their use in commercial white wine fermentation
Maria AponteLuca SettanniGiancarlo MoschettiRaffaele RomanoMario ChiurazziNicola Francescasubject
Fermentation in winemakingWinebiologyAscomycotaPhylogenetic treeBirds Grape variety ‘‘Rovello bianco’’ or ‘‘Greco muscio’’ PCR-DGGE Saccharomyces cerevisiae Vineyard environment Wild yeasts Wine fermentationPhysiologySaccharomyces cerevisiaefood and beveragesGeneral Medicinebiology.organism_classificationApplied Microbiology and BiotechnologyVineyardYeastBirds Grape variety ‘‘Rovello bianco’’ or ‘‘Greco muscio’’ PCR-DGGEBotanyFermentationBiotechnologySettore AGR/16 - Microbiologia Agrariadescription
The indigenous yeast communities associated with several vineyard habitats were analysed. Wild yeasts were isolated, differentiated at strain level and identified. A phylogenetic tree based on partial 26S rRNA genes was constructed. The strains were characterized and the indigenous Saccharomyces cerevisiae GR1 was then used to carry out a vinification process and compared with a commercial yeast. Wines obtained were subjected to chemical and sensory analysis. The comparison between the two products highlighted differences due to the fer- menting strains employed. The vineyard environment was found to strongly influence the composition of yeast communities, thus, confirming the theory of ‘terr- oir’ on the expression of wines. Moreover, vineyard inhabiting birds were in part responsible for the dis- semination of fermentative yeasts during their feeding
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-09-19 |