RESUMEN
It has been established that the presence in the medium Ca2+ and Fe2+ ions in 1.2 - 1.3 times increases the assimilation of hydrocarbon by actinobacteria. The possibility of joint growth of binary actinobacteria cultures on mineral medium with diesel fuel without reducing the assimilation of this substrate compared to monocultures it was shown. In the conditions of co-batch culture Rhodococcus erythropolis IMV B-7277 and Dietzia maris IMV B-7278 strains in the laboratory fermenter "Biotec" (stirring speed 500 r.p.m., degree of aeration 0.3 1/1 per min, sulfite number 1.5 g O2 /1 h,) on the medium with 1.0% diesel oil in the presence of 4 mg/l Ca2+, Fe2+ and 1 g/l yeast extract for 30 hours the substrate assimilation rate was 87.8% and the concentration of biomass - 2.0 g/l.
Asunto(s)
Actinobacteria/metabolismo , Calcio/metabolismo , Gasolina , Bacteria Gordonia/metabolismo , Hierro/metabolismo , Rhodococcus/metabolismo , Biodegradación Ambiental , Reactores Biológicos , Cationes Bivalentes , Mezclas Complejas/metabolismo , Fermentación , Saccharomyces cerevisiae/químicaRESUMEN
In a review information is presented about composition of mineral motor oils and their negative impact on the environment and the ability of microorganisms, in particular actinobacteria, to assimilate hydrocarbon oil components. The role of bacteria is described in the process of cleaning up polluted environments motor oils and the prospect of their use in biotechnology, environmental clean-up of these pollutants.