忠北鞘氨醇菌对邻苯二甲酸酯类增塑剂邻苯二甲酸二异壬酯（DINP）的生物降解作用
Biodegradation of a phthalate plasticizer, di-isononyl phthalate (DINP), by Sphingobium chungbukense.
作者信息
Park Jae-Min, Jeon Miri, Lim Eun-Suk, Um Hyun-Ju, Kim Young-Chang, Min Jiho, Kim Yang-Hoon
机构信息
School of Life Science, Chungbuk National University, 410 Sungbong-Ro, Heungduk-Gu, Cheongju, 361-763, South Korea.
出版信息
Curr Microbiol. 2008 Nov;57(5):515-8. doi: 10.1007/s00284-008-9232-7. Epub 2008 Sep 16.
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 degrees 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.
在本研究中，中北鞘氨醇杆菌KCTC 2955能有效降解邻苯二甲酸二异壬酯（DINP）。在矿物盐培养基中，中北鞘氨醇杆菌降解100 mg L⁻¹ DINP的最佳条件为pH 7.0、30℃，并以200 rpm搅拌。发现DINP的最大比降解速率与浓度有关，最大为4.12 mg DINP L⁻¹ h⁻¹。中北鞘氨醇杆菌能迅速将DINP转化，生成邻苯二甲酸单异壬酯（MIP）和邻苯二甲酸，随后它们会进一步降解。这些结果凸显了这种细菌在去除环境中受DINP污染废物方面的潜力。
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