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J Hazard Mater. 2011 Jul 15;191(1-3):393-6. doi: 10.1016/j.jhazmat.2011.04.080. Epub 2011 Apr 23.

Novel biodegradation pathways of cyclohexane by Rhodococcus sp. EC1.

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Department of Environmental Science and Engineering, Ewha Womans University, Seoul, Republic of Korea.


The metabolism of cyclohexanes by Rodococcus sp. EC1 was investigated using a sequential tracking method of degradation intermediate. Evidence for the formation of cyclohexanol, cyclohexaone, 2-cyclohexen-1-one, and phenol was presented. EC1 metabolized cyclohexane to phenol by aromatization of 2-cyclohexen-1-one, and furthermore gamma-butyrolactone as an intermediate of 2-cyclohexen-1-one was formed. Aromatization by EC1 was confirmed using tetrahydrofuran. Tetrahydrofuran was metabolized through aromatization reaction, involving furan and 2,3-dihydrofuran as key intermediates. EC1 can degrade cyclohexane and tetrahydrofuran in aromatization via desaturation.

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