Tondini, Federico published the artcileLinking gene expression and oenological traits: Comparison between Torulaspora delbrueckii and Saccharomyces cerevisiae strains, Application of Ethyl octanoate, the main research area is Torulaspora Saccharomyces acetic acid alc fermentation esterase; BAP2; Indigenous yeast; Transcripts profile; Wine isolates.
Wine fermentations typically involve the yeast Saccharomyces cerevisiae. However, many other yeast species participate to the fermentation process, some with interesting oenol. traits. In this study the species Torulaspora delbrueckii, used occasionally in mixed or sequential fermentation with S. cerevisiae to improve wine sensory profile, was investigated to understand the physiol. differences between the two. Next generation sequencing was used to characterize the transcriptome of T. delbrueckii and highlight the different genomic response of these yeasts during growth under wine-like conditions. Of particular interest were the basic differences in the glucose fermentation pathway and the formation of aromatic and flavor compounds such as glycerol, esters and acetic acid. Paralog genes were missing in glycolysis and glycerol biosynthesis in T. delbrueckii. Results indicate the tendency of T. delbrueckii to produce less acetic acid relied on a higher expression of alc. fermentation related genes, whereas acetate esters were influenced by the absence of esterases, ATF1-2. Addnl., in the Δbap2 S. cerevisiae strain, the final concentration of short branched chain Et esters (SBCEEs) was related to branched chain amino acid (BCAA) uptake. In conclusion, different adaptation strategies are apparent for T. delbrueckii and S. cerevisiae yeasts, an understanding of which will allow winemakers to make better use of such microbial tools to achieve a desired wine sensory outcome.
International Journal of Food Microbiology published new progress about Aromatic compounds Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 106-32-1 belongs to class esters-buliding-blocks, name is Ethyl octanoate, and the molecular formula is C10H20O2, Application of Ethyl octanoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics