Cryopreservation of various types of soil bacteria and mixtures thereof
1992
Abstract The survival of seven strains of Pseudomonas spp. and seven strains of Arthrobacter spp. following ultrarapid freezing at a cooling rate of 400 °C/min in water suspensions and in soil was studied. All the pseudomonas tested survived freezing in water better than freezing in soil, whereas the reverse was true for arthrobacters. Mixing culture suspensions ( Pseudomonas 10 8 CFU/ml + Arthrobacter 10 8 CFU/ml) prior to freezing in some cases enhanced recovery of arthrobacters (threefold) from frozen water suspensions and recovery of pseudomonas (twofold) from soil.
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