Abstract
The cells of Rhodococcus opacus 412 and R. rhodnii 135 were adapted to phenanthrene and anthracene on a solid mineral medium. Preliminary adaptation of the strains accelerated the metabolism of polyaromatic hydrocarbons and provided for the ability of microorganisms to grow on pheanthrene as a sole carbon and energy source in a liquid mineral medium. It was shown that phenanthrene was mineralized by the strains through 7,8-benzocoumarin, 1-hydroxy-2-naphthoaldehyde, 1-hydroxy-2-naphthoic acid, salicylaldehyde, salicylate and catechol to the intermediates of tricarbonic acid cycle and partially transformed with the accumulation of the products of subsequent monooxygenation (3-hydroxyphenanthrene and phenanthrene dihydroxylated not in ortho-position). As a result of the adaptation of the strains to anthracene on a solid mineral medium, the obtained variant of strain R. opacus 412 was able to transform anthracene in a liquid mineral medium to anthraquinone and 6,7-benzocoumarin.
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