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1

Characterization of selected bacterial strains degrading hydrocarbons of petroleum oil

100%
Galas E., Kwapisz E., Tarabasz-Szymanska A., Krystynowicz A., Antczak T., Orynska
Biotechnologia
|
1997
|
issue 1
145-157
EN
The results of special tests which had been carried out with the following bacterail strains Bacillus sp. S2, Bacillus sp. BP, Pseudomonas sp. 141 and Micrococcus sp. R5.4 show that these strains are acive degraders of petroleum oil hydrocarbons, tolerate high concentrations of the subsrtate and have a high capability for degradation of hydrocarbons.The activity of dehydrogenases was related to the concentration of the substrate.The gas chromatography analysis of residual hydrocarbons in the medium after 9 days of cultivation proved that the main identified petroleum oil components had been metabolized with the yield 69 to 100%. Apart from the compounds originally present in crude oil no new by-products were detected in final medium.The accumulation of shorter chain length hydrocarbons and various new by-products occured in the case of another tested bacterial strain, designated 'B'.
2

Pathways of aerobic petroleum oil hydrocarbons biodegradation

80%
Kwapisz E.
Biotechnologia
|
2006
|
issue 2
166-188
EN
The paper reviews the aspects of physiology and biochemistry of microbial biodegradation of the main components of petroleum oil: alkanes (larger than methane), alkenes, alkines, cyclic, polycyclic, aromatic and polyaromatic hydrocarbons. It focuses on aerobic degradation pathways. The review provides key information prepared on the basis of more than 30 years of research on microbial degradation of hydrocarbons. The areas discussed include new pathways of biodegradation of branched-chain alkanes, cyclic and polyaromatic hydrocarbons which have been discovered during the past few years. Special attention was paid to oxygenases ? enzymes initiating aerobic metabolism of hydrocarbons and phenomenon of co-oxidation which enables assimilation of most recalcitrant components of crude oil.
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