Selection of indigenous Saccharomyces cerevisiae strains in Shanshan County (Xinjiang, China) for winemaking and their aroma-producing characteristics.
In order to select potential indigenous Saccharomyces strains, diversity of indigenous Saccharomyces strains in Shanshan County (Xinjiang, China) was preliminarily analyzed. Twenty-one genotypes were found through interdelta fingerprinting analysis. According to this result, representatives of each genotype were chosen to test the enological criteria. After tests of fermentation characteristics and growth ability, eight strains were finally selected as starters to further fermentation of Merlot must for aroma analysis and sensory evaluation at the same testing conditions, with one commercial strain F15 as control. Each strain of Saccharomyces cerevisiae produced individual volatiles in different concentrations and combinations which significantly influenced resulting wine flavour. Except of LFP522, all indigenous isolates produced more concentration of esters than F15. Higher concentrations of linalool, β-damascenone and citral, associated with S. cerevisiae LFE1809, considerably distinguished this strain from the others. Sensory evaluation present the Merlot wine fermented by LFE1225 isolated from Merlot, had the highest sensory score.
College of Enology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China.
Ning
N
Liu
College of Enology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China.
Yi
Y
Qin
College of Enology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China.
Yuyang
Y
Song
College of Enology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China.
Dongqin
D
Ye
College of Enology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China.
Wei
W
Yuan
College of Enology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China.
Yingfang
Y
Pei
College of Enology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China.
Bo
B
Xue
College of Enology, Northwest A&F University, 22 Xinong Road, Yangling, 712100, Shaanxi, China. yanlinliusun@126.com.|Shaanxi Engineering Research Center for Viti-viniculture, Yangling, 712100, Shaanxi, China. yanlinliusun@126.com.
Yanlin
Y
Liu
D004952:Esters / Q000032:analysis*; D005285:Fermentation; D014644:Genetic Variation; D016681:Genome, Fungal; D005838:Genotype; D007218:Industrial Microbiology / Q000379:methods; D009812:Odorants; D012441:Saccharomyces cerevisiae / Q000145:classification* / Q000235:genetics* / Q000254:growth & development; D027843:Vitis / Q000382:microbiology*; D014920:Wine / Q000032:analysis
D004952:Esters
Interdelta fingerprinting; Sensory evaluation; Volatiles; Yeast selection