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Survival of Lactobacillus bifidus after freeze-drying
(Cryobiology, 1967)
Between 90 and 100% of Lactobacillus bifidus survived freeze-drying in media consisting of 8% sucrose, 1.5% gelatin, and 5% skim milk. The cultures in suspensions were 48 hrs old, and the approximate concentration of cells ...