Exploring the diversity of the fungal community in Chinese traditional Baijiu daqu starters made at low-, medium- and high-temperatures
文献类型: 外文期刊
作者: Zhou, Qingfeng 1 ; Ma, Kang 1 ; Song, Yang 1 ; Wang, Ziwei 1 ; Fu, Zhongjun 2 ; Wang, Yuhong 3 ; Zhang, Xiaoyu 4 ; Cui, Mingfang 1 ; Tang, Ning 1 ; Xing, Xiaolong 1 ;
作者机构: 1.Shangqiu Normal Univ, Sch Biol & Food, 55 Pingyuan Rd, Shangqiu 476000, Henan, Peoples R China
2.Chongqing Acad Agr Sci, Maize Res Inst, Chongqing 401329, Peoples R China
3.Henan Vocat Coll Agr, Dept Food Engn, Zhengzhou 451450, Peoples R China
4.Zhengzhou Univ Technol, Sch Chem Engn & Food Sci, Zhengzhou 450044, Peoples R China
关键词: Fungal community; Daqu starter; Temperature; High-throughput sequencing
期刊名称:LWT-FOOD SCIENCE AND TECHNOLOGY ( 影响因子:6.056; 五年影响因子:6.295 )
ISSN: 0023-6438
年卷期: 2022 年 162 卷
页码:
收录情况: SCI
摘要: Daqu is a traditional Chinese baijiu starter. To investigate the composition of the microbial community of daqu starters, high-throughput sequencing (HTS) combined with culture-dependent method was used to analyze the fungal diversity of thirty starters made at three temperatures (low-, medium-and high-temperature). In the study, we isolated 420 isolates of fungal strains through the plate culture method. Saccharomyces cerevisiae, Wickerhamomyces anomalus and Saccharomycopsis fibuligera were the most common yeasts encountered in these daqu starters, accounting for 79% of the relative abundance. HTS showed that the dominant genera in low temperature daqu were distinct from those of medium-and high-temperature. The genera, Thermomyces and Thermoascus, exhibited a higher relative abundance and were considered to be the dominant flora in high-(75%) and medium-(47%) temperature starters, respectively. These two genera were thermotolerant fungi. Saccharomycetaceae was the predominant microflora in low-temperature daqu with a relative abundance of 68%. The present study suggests that the effect of the daqu processing temperature on the fungal community was important and that a knowledge of microbial composition should help to screen fermentation strains thus improving the quality of baijiu liquor.
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