Hydrocarbon-Oxidizing Activity of the New Rhodococcus sp. Strain 1D/1 Promising for Cleaning the Environment from Oil Pollution

This study investigated the oil-degrading properties of strain 1D/1 of Rhodococcus sp., isolated from oil-contaminated soil in Kazakhstan's Kyzylorda region.Using accumulative cultures, researchers isolated the strain and confirmed its classification within the genus Rhodococcus through 16S ribosomal RNA analysis.Strain 1D/1 demonstrated effective decomposition of various petroleum products, such as crude oil, fuel oil, and diesel fuel, and showed versatility in utilizing cresol, naphthalene, anthracene, and phenanthrene isomers as sole carbon and energy sources.Gas chromatography analyses revealed its capability to degrade n-alkanes ranging from C11 to C28, highlighting its potential for bioremediation efforts in addressing oil contamination challenges.The strain effectively decomposed crude oil, fuel oil, and diesel fuel, degrading n-alkanes with C11-C28 chain lengths.Gas chromatographic analysis showed that the strain degraded up to 100% of certain n-alkanes.The strain grew on both light and heavy oil and could degrade oil at different temperatures, with biodegradation rates of 60.9% at 10℃ and 60.6% at 30℃ for Dossor oil.At 50℃, the activity of the strain decreased slightly, with a biodegradation rate of 56.1%.The strain is capable of degrading both light and heavy oils at low and elevated temperatures, making it a versatile candidate for environmental bioremediation technologies.