LONG-TERM PRESERVATION OF VITALITY AND LIGHT EMISSION OF LUMINOUS BACTERIAL STRAINS

It was established that lyophilization and cryogenic method were the most appropriate ones for preservation of luminous bacteria without changes in their morphology and properties. The strains kept their viability during a two years observation period. The reactivation of luminous bacteria, which were preserved under liquid paraffin, led to the restoration of their vitality and ability for light emission only in the course of 1 to 5 months.