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Advisor(s)
Abstract(s)
The effects of three different growth media (MRS, M17 and Lee’s) on survival during freeze-drying and subsequent storage of six strains of Enterococcus faecalis and two strains of E. durans were investigated.
Methods and Results: Distinct Enterococcus spp. strains were grown on M17, MRS and Lee’s broth, freeze-dried and stored at 20 C in air under darkness. At regular intervals throughout storage, freeze-dried samples were
rehydrated and then plated on M17 agar.
Conclusions: A higher survival rate during storage of dried E. durans was obtained when growth occurred in MRS. The same effect was not observed, however, for the majority of E. faecalis strains, which clearly survived
better in the dried state when this organism had been grown in M17 or Lee’s medium.
Significance and Impact of Study: The survival of the dried Enterococcus spp. tested during storage was shown to be strain-specific and dependent on the growth medium.
Description
Keywords
Enterococcus spp Growth medium Preservation Viability
Citation
"Journal of Applied Microbiology". ISSN 1364-5072. 94: 6 (2003) 947-952
Publisher
Wiley-Blackwell