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Biodegradation of a Phthalate Plasticizer, Di-Isononyl Phthalate (DINP), by Sphingobium chungbukense

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Abstract

In this study, di-isononyl phthalate (DINP) was efficiently degraded by Sphingobium chungbukense KCTC 2955. The optimal conditions for DINP (100 mg L−1) degradation by S. chungbukense in a mineral salts medium were found to be pH 7.0, 30°C, and stirring at 200 rpm. The maximum specific rate of DINP degradation was found to be concentration dependent, with a maximum of 4.12 mg DINP L−1 h−1. DINP was transformed rapidly by S. chungbukense, with the formation of monoisononyl phthalate (MIP) and phthalic acid, which subsequently degraded further. These results highlight the potential of this bacterium for removing DINP-contaminated waste in the environment.

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Acknowledgment

This study was supported by a 2007 research grant from Chungbuk National University.

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Authors and Affiliations

  1. School of Life Science, Chungbuk National University, 410 Sungbong-Ro, Heungduk-Gu, Cheongju, 361-763, South Korea

    Jae-Min Park, Hyun-Ju Um, Young-Chang Kim & Yang-Hoon Kim

  2. College of Agriculture, Life & Environmental Sciences, Chungbuk National University, 410 Sungbong-Ro, Heungduk-Gu, Cheongju, 361-763, South Korea

    Miri Jeon

  3. Graduate School of Semiconductor and Chemical Engineering, Chonbuk National University, 664-14, 1-Ga, Duckjin-Dong, Duckjin-Gu, Jeonju, 561-156, South Korea

    Eun-Suk Lim & Jiho Min

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  1. Jae-Min Park
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  2. Miri Jeon
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  3. Eun-Suk Lim
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  4. Hyun-Ju Um
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  5. Young-Chang Kim
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  7. Yang-Hoon Kim
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Correspondence to Jiho Min or Yang-Hoon Kim.

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Jae-Min Park and Miri Jeon contributed equally to this work.

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Park, JM., Jeon, M., Lim, ES. et al. Biodegradation of a Phthalate Plasticizer, Di-Isononyl Phthalate (DINP), by Sphingobium chungbukense . Curr Microbiol 57, 515–518 (2008). https://doi.org/10.1007/s00284-008-9232-7

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  • DOI: https://doi.org/10.1007/s00284-008-9232-7

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