Microbial succession and the functional potential during the fermentation of Chinese soy sauce brine

Joanita Sulaiman, Han Ming Gan, Wai Fong Yin, Kok Gan Chan

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    32 Citations (Scopus)

    Abstract

    The quality of traditional Chinese soy sauce is determined by microbial communities and their inter-related metabolic roles in the fermentation tank. In this study, traditional Chinese soy sauce brine samples were obtained periodically to monitor the transitions of the microbial population and functional properties during the 6 months of fermentation process.Whole genome shotgun method revealed that the fermentation brine was dominated by the bacterial genus Weissella and later dominated by the fungal genus Candida. Metabolic reconstruction of the metagenome sequences demonstrated a characteristic profile of heterotrophic fermentation of proteins and carbohydrates.This was supported by the detection of ethanol with stable decrease of pH values. To the best of our knowledge, this is the first study that explores the temporal changes in microbial successions over a period of 6 months, through metagenome shotgun sequencing in traditional Chinese soy sauce fermentation and the biological processes therein.
    Original languageEnglish
    Pages (from-to)1 - 9
    Number of pages9
    JournalFrontiers in Microbiology
    Volume5
    Issue number556
    DOIs
    Publication statusPublished - 2014

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