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Yeast

Title:		The impact of different Saccharomyces cerevisiae strains on microbial composition and quality of Chinese rice wine fermentations
Author(s):		Zheng H; Wei P; Zhang G; Xu W; Li Y;
Address:		"Department of Biological Engineering, School of Food Science and Biotechnology, Zhejiang Gongshang Univeristy, Hangzhou, China. Translational Medicine Center, Sichuan Academy of Traditional Chinese Medicine, Chengdu, China. School of Engineering, Westlake University, Hangzhou, China"
Journal Title:		Yeast
Year:		2021
Volume:		20201206
Issue:		2
Page Number:		147 - 156
DOI:		10.1002/yea.3523
ISSN/ISBN:		1097-0061 (Electronic) 0749-503X (Linking)
Abstract:		"Chinese rice wine (CRW) is a popular fermented product in China, with complicated microbial composition and flavour compounds. To reveal the effects of different strains of Saccharomyces cerevisiae (N85 and XZ11) on the microbial composition in the process of brewing, metagenomic sequencing approaches were carried out to explore the dynamic changes of bacteria and fungi. Furthermore, the volatile compounds and organic acids in CRW were identified by headspace solid phase microextraction (HS-SPME)/gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS) at the end of the brewing. Our results indicated that different S. cerevisiae strains could influence microbial compositions and especially affected the growth of Lactobacillus brevis and Pantoea ananatis. The changes in the microbial community structure contributed to the remarkable difference in the content of lactic acid, esters, alcohols, and aldehydes. Moreover, functional network analysis provided insights into the biological correlations between microbial species and metabolic pathways, that is, Lactobacillus genus had negative effects on metabolic activities. This study expands the idea of improving the quality of CRW by controlling the microbiome"
Keywords:		Bioreactors *Fermentation Levilactobacillus brevis/growth & development Metagenomics/methods *Microbiota/genetics/physiology Pantoea/growth & development Saccharomyces cerevisiae/*classification/genetics/*metabolism Volatile Organic Compounds/analysis Win;
Notes:		"MedlineZheng, Helong Wei, Ping Zhang, Guoqing Xu, Wen Li, Yudong eng Research Support, Non-U.S. Gov't England 2020/10/31 Yeast. 2021 Feb; 38(2):147-156. doi: 10.1002/yea.3523. Epub 2020 Dec 6"