Investigation of Freezing and Freeze-Drying for Preserving and Re-Using a Whole Microbial Cheese Community - Archive ouverte HAL
Article Dans Une Revue Foods Année : 2024

Investigation of Freezing and Freeze-Drying for Preserving and Re-Using a Whole Microbial Cheese Community

Résumé

Preserving microbial ecosystems obtained from traditional cheese-making processes is crucial to safeguarding the biodiversity of microbial cheese communities and thus ensuring that the high flavor quality of traditional cheeses is maintained. Few protocols have been proposed for the long-term storage of microbial consortia. This work aimed to develop preservation methods to stabilize the entire microbial community in smear-ripened cheese without multiplication or isolation. A simplified microbial community, capable of reproducing the metabolic pattern of cheese maturation, was used in three independent cheese productions. Cheese samples were taken before and after the ripening step, mixed with maltodextrin or saline solution, and subjected to different stabilization conditions including freezing and freeze-drying, followed by 1 month of storage. Microbial survival was quantified using the colony-forming unit assay. Differential scanning calorimetry was used to relate the physical events occurring within the samples to the microbial storage stability. Freezing at −80 °C resulted in the lowest loss of culturability (<0.8 log unit), followed by freezing at −20 °C and freeze-drying. The ripening bacteria appeared as the most sensitive microorganisms within the community. Moreover, a successful cheese production using the best-stabilized community showed the possibility of preserving and re-using an entire microbial community of interest.
Fichier principal
Vignette du fichier
CaoPassot_2024_Foods.pdf (4.16 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-04607514 , version 1 (10-06-2024)

Licence

Identifiants

Citer

Wenfan Cao, Stéphanie Passot, Françoise Irlinger, Fernanda Fonseca. Investigation of Freezing and Freeze-Drying for Preserving and Re-Using a Whole Microbial Cheese Community. Foods, 2024, 13 (12), pp.1809. ⟨10.3390/foods13121809⟩. ⟨hal-04607514⟩
35 Consultations
30 Téléchargements

Altmetric

Partager

More