Abstract
The microbial diversity and the community succession in the fermenting cover lees of Chinese Luzhou-flavor liquor were investigated by small-subunit rRNA (SSU rRNA) culture independent method. All sequences retrieved from the 1, 7 and 60 days fermented cover lees were respectively assigned into the genera of Streptococcus, Acetobacter, Arthrobacter, Bacillus, Staphylococcus, Serratia, Nocardia, Methanoculleus, Clostridium, Aneurinibacillus, Corynebacterium, Lactobacillus, Microbacterium, Trichosporon, Saccharomycopsis, Sagenomella, Talaromyces, Eurotium, Issatchenkia, Zygosaccharomyces, Saccharomyces and TM7 phylum. The fungal Issatchenkia, Saccharomycopsis and Talaromyces and the bacteria Staphylococcus and Lactobacillus were most abundant in the 1 day fermented cover lees, the fungal Issatchenkia, Saccharomyces and Talaromyces and the bacteria Bacillus and Streptococcus were dominant in the 7 days cover lees, the archaea Methanoculleus and the fungal Eurotium and Talaromyces were prevalent in the 60 days cover lees. When the microbial community profiles in three samples were compared at species level, the prokaryotic community similarity coefficient was from 0.4042 to 0.5703 and descended to 0.2222, and that of eukaryotic community was from 0.3000 to 0.6000 and followed to 0.5215. These results suggested that microbial diversity variability and community succession have happened in the cover lees associated with fermentation proceeding and such variability and succession respond for the appearance of some unique flavor of Luzhou-flavor liquor.
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Acknowledgments
This work was financially supported by the grant from the Chunhui Program of ministry of education of the people’s republic of China (Z2010101) and the Key Laboratory of Food Biotechnology of Sichuan, Xihua University, Sichuan, China (SZJJ2009-014).
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Li, K., Zhang, Q., Zhong, XT. et al. Microbial Diversity and Succession in the Chinese Luzhou-Flavor Liquor Fermenting Cover Lees as Evaluated by SSU rRNA Profiles. Indian J Microbiol 53, 425–431 (2013). https://doi.org/10.1007/s12088-013-0382-3
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DOI: https://doi.org/10.1007/s12088-013-0382-3