研究报告

酵母麸曲培养条件优化及其固态发酵应用研究

  • 余安玲 ,
  • 张小娜 ,
  • 李红
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  • 1(中国食品发酵工业研究院有限公司,北京,100015)
    2(国家酒类品质与安全国际联合研究中心,北京,100015)
第一作者:硕士,工程师(李红教授级高级工程师为通信作者,E-mail:li_hong2001@163.com)

收稿日期: 2023-06-30

  修回日期: 2023-07-25

  网络出版日期: 2024-07-12

基金资助

国家重点研发计划政府间科技创新合作项目(2021YFE0192000)

Optimization of yeast Fuqu culture conditions and application in solid-state fermentation

  • YU Anling ,
  • ZHANG Xiaona ,
  • LI Hong
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  • 1(China National Research Institute of Food and Fermentation Industries Co.Ltd., Beijing 100015, China)
    2(International Joint Research Center of Quality and Safety of Alcoholic Beverages, Beijing 100015, China)

Received date: 2023-06-30

  Revised date: 2023-07-25

  Online published: 2024-07-12

摘要

为提升清香型白酒中酯类物质的含量,该研究将异常威克汉姆酵母应用于麸曲制作中,对酵母麸曲的制作工艺条件进行优化,并将其应用于白酒固态发酵实验,对酒体的香气成分进行研究。以麸曲的酵母活菌数为响应值,采用响应面法对酵母麸曲的培养条件进行优化,得到最佳培养条件为:培养时间38 h、培养温度32 ℃、水料比1.10∶1、接种量10%,麸曲酵母活菌数为(7.25±0.04)×109 CFU/g。将优化后所得的酵母麸曲应用于模拟固态发酵白酒工艺中,以不同大曲麸曲比例作为自变量,采用相同生产工艺酿造白酒。结果表明,酵母麸曲组的乙酸乙酯含量较大曲组有明显增加,是大曲组的6.52倍。偏最小二乘判别分析结果表明,添加麸曲酿造的白酒与仅使用大曲酿造的白酒的香气成分具有明显区别。该工艺制作的酵母麸曲可有效提高白酒中酯类物质含量,增加白酒香气成分,对白酒的酿造生产具有一定参考意义。

本文引用格式

余安玲 , 张小娜 , 李红 . 酵母麸曲培养条件优化及其固态发酵应用研究[J]. 食品与发酵工业, 2024 , 50(11) : 47 -54 . DOI: 10.13995/j.cnki.11-1802/ts.036627

Abstract

In order to increase the content of ester substances in light-aroma Baijiu, Wickerhamomyces anomalus were applied to the production of Fuqu.Then the Fuqu was applied to the solid-state fermentation, and the aroma components of Baijiu were studied.The response surface method was utilized to optimize the culture conditions of yeast Fuqu, and the optimal culture conditions were:culture time 38 h, culture temperature 32 ℃, water-to-material ratio 1.10∶1, inoculation dose 10%, and the viable count of yeast was (7.25±0.04)×109 CFU/g.The optimized yeast Fuqu was applied to simulate solid-state fermentation of Baijiu, and Baijiu was brewed with the same production process with different proportion of Daqu and Fuqu.The results showed that the content of ethyl acetate in yeast Fuqu group was 6.52 times higher than that in Daqu group.The results of partial least-squares discrimination analysis showed that the aroma components of Baijiu made with Fuqu were obviously different from those made with Daqu.The Fuqu produced by this process can effectively increase the content of ester substances in Baijiu and enhance the aroma of Baijiu, which has reference significance for the brewing and production of Baijiu.

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