The Changes of Bacterial Community Structure of Hot Air Dried Daqu during the Storage
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Abstract:
Bacterial community structure of hot air dried Daqu in the storage period was researched by high-throughput sequencing technology. The results showed that the bacterial abundance of hot air dried Daqu increased firstly and then reduced with increasing the storage time, while bacterial community diversity increased all the time. Firmicutes was the absolute dominant phyla, and Weissella was the absolute dominant genera. Hot air drying for Daqu stored in Daqu room could promote the growth of Staphylococcus bacteria, and inhibit the growth of Lactobacillus bacteria. Hot air drying for Daqu stored under laboratory conditions could promote the growth of Kroppenstedtia bacteria and Bacillus bacteria. With increasing the storage time, laboratory conditions could promote the abundance of Paenibacillus, Pseudogracilibacillus, Kroppenstedtia, Melghirimyces bacteria of hot air dried Daqu. The bacterial biomass of hot air dried Daqu stored in Daqu room tended to be stable with increasing the storage time.
