Biochemical analysis and environmental applications of petroleum degrading bacteria
Abstract
A bacterial stain, Spet, was isolated from a Greek petroleum polluted soil, near Athens, using petroleum as sole carbon and energy source and it was taxonomically identified as closest to Pseudomonas aeruginosa based on 16S rDNA sequence, G+C content, fatty acids analysis and several biochemical assays. Strain Spyr1 isolated from a Greek creosote polluted soil using pyrene as sole carbon and energy source was found to belong to Mycobacterium sp. based on 16S rDNA gene sequence analysis. Spyr1, exhibited a very broad substrate profile, being able to utilize anthracene, phenanthrene, fluorine, fluoranthene and pyrene as sole carbon and energy source. For soil biodegradation studies four different types of soil were used: a non-polluted spiked soil, a heavily polluted soil, an aged polluted soil and a non-polluted spiked soil that was left to age for six months. Spyr1 and Spet cells acclimated to grow in petroleum and pyrene as the sole carbon and energy source were immobilized in three d ...
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