| Title: | Dynamic analysis of physiological properties of Torulaspora delbrueckii in wine fermentations and its incidence on wine quality |
| Author(s): | Belda I; Navascues E; Marquina D; Santos A; Calderon F; Benito S; |
| Address: | "Department of Microbiology, Biology Faculty, Complutense University of Madrid, 28040, Madrid, Spain" |
| Journal Title: | Appl Microbiol Biotechnol |
| DOI: | 10.1007/s00253-014-6197-2 |
| ISSN/ISBN: | 1432-0614 (Electronic) 0175-7598 (Linking) |
| Abstract: | "This work examines the physiology of a new commercial strain of Torulaspora delbrueckii in the production of red wine following different combined fermentation strategies. For a detailed comparison, several yeast metabolites and the strains implantation were measured over the entire fermentation period. In all fermentations in which T. delbrueckii was involved, the ethanol concentration was reduced; some malic acid was consumed; more pyruvic acid was released, and fewer amounts of higher alcohols were produced. The sensorial properties of final wines varied widely, emphasising the structure of wine in sequential fermentations with T. delbrueckii. These wines presented the maximum overall impression and were preferred by tasters. Semi-industrial assays were carried out confirming these differences at a higher scale. No important differences were observed in volatile aroma composition between fermentations. However, differences in mouthfeel properties were observed in semi-industrial fermentations, which were correlated with an increase in the mannoprotein content of red wines fermented sequentially with T. delbrueckii" |
| Keywords: | "Alcohols/analysis DNA, Fungal/chemistry/genetics DNA, Ribosomal/chemistry/genetics Fermentation *Food Quality Genes, rRNA Malates/metabolism Molecular Sequence Data Pyruvic Acid/metabolism RNA, Fungal/genetics RNA, Ribosomal/genetics Sequence Analysis, DN;" |
| Notes: | "MedlineBelda, Ignacio Navascues, Eva Marquina, Domingo Santos, Antonio Calderon, Fernando Benito, Santiago eng Research Support, Non-U.S. Gov't Germany 2014/11/20 Appl Microbiol Biotechnol. 2015 Feb; 99(4):1911-22. doi: 10.1007/s00253-014-6197-2. Epub 2014 Nov 19" |
