RESUMO
A capacity of microorganisms of different taxonomic groups to assimilate surface-active substances (surfactants) of Acinetobacter calcoaceticus K-4 as a single source of carbon and energy has been established. It was shown that A. calcoaceticus K-4 cannot use its own surfactants as a source of carbon nutrition. The use of biocide formalin in concentration of 0.1% permits to prolong the term of preservation of A. calcoaceticus K-4 surfactants to 3.5 months without a loss of their surfactant and emulsiying properties.
Assuntos
Acinetobacter calcoaceticus/metabolismo , Tensoativos/análise , Tensoativos/metabolismo , Acinetobacter calcoaceticus/efeitos dos fármacos , Acinetobacter calcoaceticus/crescimento & desenvolvimento , Acinetobacter calcoaceticus/isolamento & purificação , Biodegradação Ambiental , Desinfetantes/farmacologia , Formaldeído/farmacologia , Microbiologia do Solo , Tensão Superficial , Fatores de TempoRESUMO
The possibility of the use of Acinetobacter calcoaceticus K-4 surface-active substances (SAS) for water purification from oil was shown. The efficiency of oil degradation (2.6 g/l) in the presence of SAS preparations (5-15 %) in the form of postfermentation of cultural liquid or its supernatant was established to be 81-95 %. Intensification of oil destruction was determined by SAS affecting the activity of oil-oxidizing microbial population.