Scott, William T. Jr. published the artcileNitrogenous compound utilization and production of volatile organic compounds among commercial wine yeasts highlight strain-specific metabolic diversity, Application of 3-(Methylthio)propan-1-ol, the main research area is nitrogenous production volatile organic compound wine yeast metabolic diversity; HS-SPME/GC-MS; Saccharomyces cerevisiae; fermentation; metabolic modeling; volatile organic compounds; wine.
Genetic background and environmental conditions affect the production of sensory impact compounds by Saccharomyces cerevisiae. The relative importance of the strain-specific metabolic capabilities for the production of volatile organic compounds (VOCs) remains unclear. We investigated which amino acids contribute to VOC production and whether amino acid-VOC relations are conserved among yeast strains. Amino acid consumption and production of VOCs during grape juice fermentation was investigated using four com. wine yeast strains: Elixir, Opale, R2, and Uvaferm. Principal component anal. of the VOC data demonstrated that Uvaferm correlated with Et acetate and Et hexanoate production, R2 neg. correlated with the acetate esters, and Opale pos. correlated with fusel alcs. Biomass formation was similar for all strains, pointing to metabolic differences in the utilization of nutrients to form VOCs. Partial least-squares linear regression showed that total aroma production is a function of nitrogen utilization (R2 = 0.87). We found that glycine, tyrosine, leucine, and lysine utilization were pos. correlated with fusel alcs. and acetate esters. Mechanistic modeling of the yeast metabolic network via parsimonious flux balance anal. and flux enrichment anal. revealed enzymes with crucial roles, such as transaminases and decarboxylases. Our work provides insights in VOC production in wine yeasts.
Microbiology Spectrum published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Application of 3-(Methylthio)propan-1-ol.
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