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Article Dans Une Revue Microorganisms Année : 2022

Investigation of the Phageome and Prophages in French Cider, a Fermented Beverage

Résumé

Phageomes are known to play a key role in the functioning of their associated microbial communities. The phageomes of fermented foods have not been studied thoroughly in fermented foods yet, and even less in fermented beverages. Two approaches were employed to investigate the presence of phages in cider, a fermented beverage made from apple, during a fermentation process of two cider tanks, one from an industrial producer and one from a hand-crafted producer. The phageome (free lytic phages) was explored in cider samples with several methodological developments for total phage DNA extraction, along with single phage isolation. Concentration methods, such as tangential flow filtration, flocculation and classical phage concentration methods, were employed and tested to extract free phage particles from cider. This part of the work revealed a very low occurrence of free lytic phage particles in cider. In parallel, a prophage investigation during the fermentation process was also performed using a metagenomic approach on the total bacterial genomic DNA. Prophages in bacterial metagenomes in the two cider tanks seemed also to occur in low abundance, as a total of 1174 putative prophages were identified in the two tanks overtime, and only two complete prophages were revealed. Prophage occurrence was greater at the industrial producer than at the hand-crafted producer, and different dynamics of prophage trends were also observed during fermentation. This is the first report dealing with the investigation of the phageome and of prophages throughout a fermentation process of a fermented beverage.
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hal-03693766 , version 1 (13-06-2022)

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Pierre Ledormand, Nathalie Desmasures, Cédric Midoux, Olivier Rué, Marion Dalmasso. Investigation of the Phageome and Prophages in French Cider, a Fermented Beverage. Microorganisms, 2022, 10 (6), pp.1203. ⟨10.3390/microorganisms10061203⟩. ⟨hal-03693766⟩
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