Abstract
Out of the 30 strains capable of oil degradation at 4-6 degrees C, four were selected by the ability to degrade 40% of the oil substrate present in the growth medium: Rhodococcus spp. DS-07 and DS-21 and Pseudomonas spp. DS-09 and DS-22. We studied the activity of these strains as degraders of oil products of various condensation degrees (crude oil, masut, petroleum oils, benzene resins and ethanol-benzene resins) at 4-6 degrees C. The maximum degrees of degradation of masut and ethanol-benzene resins were observed in Pseudomonas spp. DS-22 (17.2% and 5.2%, respectively). The maximum degradation of petroleum oils and benzene resins was observed in Rhodococcus spp. DS-07 (40% and 16.6%, respectively). The strains provide a basis for developing biodegrader preparations applicable to bioremediation of oil-polluted sites under the conditions of cold climate.
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