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Biomed Res Int

Title:		Improving Ethyl Acetate Production in Baijiu Manufacture by Wickerhamomyces anomalus and Saccharomyces cerevisiae Mixed Culture Fermentations
Author(s):		Fan G; Teng C; Xu D; Fu Z; Liu P; Wu Q; Yang R; Li X;
Address:		"Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University (BTBU), Beijing 100048, China. School of Food and Chemical Engineering, Beijing Technology and Business University (BTBU), Beijing 100048, China. Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology & Business University (BTBU), Beijing 100048, China"
Journal Title:		Biomed Res Int
Year:		2019
Volume:		20190113
Issue:
Page Number:		1470543 -
DOI:		10.1155/2019/1470543
ISSN/ISBN:		2314-6141 (Electronic) 2314-6133 (Print)
Abstract:		"Ethyl acetate content has strong influence on the style and quality of Baijiu. Therefore, this study investigated the effect of Saccharomyces cerevisiae Y3401 on the production of ethyl acetate by Wickerhamomyces anomalus Y3604. Analysis of cell growth showed that Y3401 influences Y3604 by nutrient competition and inhibition by metabolites, while the effect of Y3604 on Y3401 was mainly competition for nutrients. Mixed fermentation with two yeasts was found to produce more ethyl acetate than a single fermentation. The highest yield of ethyl acetate was 2.99 g/L when the inoculation ratio of Y3401:Y3604 was 1:2. Synergistic fermentation of both yeasts improved ethyl acetate production and increased the content of other flavor compounds in liquid and simulated solid-state fermentation for Baijiu. Saccharomyces cerevisiae had a positive effect on ethyl acetate production in mixed culture and provides opportunities to alter the aroma and flavor perception of Baijiu"
Keywords:		"Acetates/*metabolism Beverages/*microbiology Cell-Free System Cells, Cultured Ethanol/metabolism *Fermentation Hydrogen-Ion Concentration Microbial Interactions Saccharomyces cerevisiae/growth & development/*metabolism Volatile Organic Compounds/analysis;"
Notes:		"MedlineFan, Guangsen Teng, Chao Xu, Dai Fu, Zhilei Liu, Pengxiao Wu, Qiuhua Yang, Ran Li, Xiuting eng 2019/02/09 Biomed Res Int. 2019 Jan 13; 2019:1470543. doi: 10.1155/2019/1470543. eCollection 2019"