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Isolation, identification and application on soy sauce fermentation flavor bacteria of CS1.03.


ABSTRACT: Bacillus is a common bacterial genus in Chinese traditional sun-brewed moromi. Some Bacillus species can metabolize sauce flavour and aroma substances. To address the insufficiency of flavour microbes in soy sauce fermentation, we used 16S rDNA sequence analysis to identify the CS1.03 strain, which was isolated from moromi produced through the traditional and natural sun brewing methods. A Box-Behnken design was used to optimize the addition technology of CS1.03, and ammoniacal nitrogen content and sensory evaluation were adopted as determination indices. GC-MS analysis was also performed to analyse the flavour components. Results identified CS1.03 as Bacillus subtilis. The optimal conditions yielded 10.7 g/L ammoniacal nitrogen in fermented soy sauce with rich aroma and flavour, and a sensory evaluation score of 90.5. GC-MS analysis revealed that the contents of phenol, aldehyde and ketone are all increased. These results demonstrated that CS1.03 could improve the flavour of soy sauce and shows good potential for application in soy sauce fermentation.

SUBMITTER: Jiang X 

PROVIDER: S-EPMC6443760 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Isolation, identification and application on soy sauce fermentation flavor bacteria of CS1.03.

Jiang Xuewei X   Xu Yantao Y   Ye Jing J   Yang Zijiang Z   Huang Shouen S   Liu Yongle Y   Zhou Shangting S  

Journal of food science and technology 20190307 4


<i>Bacillus</i> is a common bacterial genus in Chinese traditional sun-brewed moromi. Some <i>Bacillus</i> species can metabolize sauce flavour and aroma substances. To address the insufficiency of flavour microbes in soy sauce fermentation, we used 16S rDNA sequence analysis to identify the CS1.03 strain, which was isolated from moromi produced through the traditional and natural sun brewing methods. A Box-Behnken design was used to optimize the addition technology of CS1.03, and ammoniacal nit  ...[more]

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