PMID: 30141887Nov 1, 2016Paper

Biodegradation of Petroleum Hydrocarbons by Actinobacteria and Acinetobacteria Strains Producing Biosurfactant

Mikrobiolohichnyĭ zhurnal. = Mikrobiologichny zhurnal
V S Pidgorskyi, T M Nogina

Abstract

Environmental pollution with petroleum hydrocarbons has become one of the most urgent problems worldwide. The effectiveness of bioremediation of oil pollutions is significantly affected by the inherent capabilities of microorganisms and their specific adaptive mechanisms of hydrocarbon assimilation. In this study the hydrocarbon biodegradation efficiency and the surface-active properties of the hydrocarbon-oxidizing strains of Gordonia rubripertincta IMB Ac-5005, Rhodococcus erythropolis IMB B-7012 and Acinetobacter calcoaceticus IMB B-7013 were determined. These strains showed high efficiency of biodegradation of n-hexadecane (82.1–86.7 %), kerosene (72.5–80.3 %), diesel fuel (70.1–74.3 %) and crude oil (63.5–68.9 %). The mixed culture of these strains completely assimilated n-alkanes C9–C21 as well as iso-alkanes C8–C17 and significantly decreased (150–230 times) the amount of n-alkanes C22–C26 in the process of cleaning up water from raw oil. The utilization of hydrocarbons by G. rubripertincta IMB Ac-5005 and R. erythropolis IMB B-7012 with low initial hydrophobicity index (2.4 and 9.6 % respectively) was accompanied by the increase in cell surface hydrophobicity (4 and 25 times respectively) and by the synthesis of cell-bo...Continue Reading

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