Abstract :
[en] In this study, using high throughput pyrosequencing, we highlighted the bacterial diversity of the traditional Algerian date product "Btana" that is produced in southern Algeria using both direct (DBM) and indirect (UBM) methods. Metagenomic analysis yielded a total of 103,379 reads, with a 606 total operational taxonomic units (OTUs) detected. Firmicutes represented 84.79 % of the total pyrosequencing reads. Phylogenetic analysis revealed that the Bacillales represented 90.20 % ± 15.12 % of the total reads. Among the phylotypes detected, Bacillus was the dominant genus (39.53 %). While Bacillus megaterium was shared among all of the samples, its distribution varied widely. Non-metric multidimensional scaling (nMDS) analysis showed that UBM samples clustered together, and three main OTUs were found in these UBM samples: Paenibacillus polymyxa, Paenibacillus xylanexedens, and Planomicrobium JN082684. Correlation analysis showed no association between parametersof the samples (age, pH, water activity) and the specific microbiota.
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