| 白腐菌锰过氧化物酶对2,2’,4,4’-四溴联苯醚的降解 |
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| 引用本文： | 阮久莉,王勐,毛亮,高士祥.白腐菌锰过氧化物酶对2,2’,4,4’-四溴联苯醚的降解[J].环境科学与技术,2012,35(1):20-24. |
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| 作者姓名： | 阮久莉 王勐 毛亮 高士祥 |
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| 作者单位： | 南京大学环境学院,污染控制与资源化研究国家重点实验室,江苏南京210046 |
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| 基金项目： | 国家自然科学基金，国家"973"项目 |
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| 摘 要： | 多溴联苯醚(PBDEs)是一类在环境中普遍存在的全球性有机污染物,对这类污染物环境行为的研究虽然已有较多报道,但是微生物降解方面尤其是针对单一胞外酶降解的研究还比较少。文章以白腐菌模式菌种Phanerochaete chrysosporium为对象,研究其分泌的胞外酶锰过氧化物酶(MnP)对环境中最常检测到的2,2’,4,4’-四溴联苯醚(BDE47)的好氧降解,考察不同β-环糊精浓度对该酶降解BDE47的影响,并初步探讨了胞内细胞色素P450的作用。结果表明,MnP能有效降解BDE47,在培养15 d后,扣除空白损失,降解率达到70%左右。低浓度和高浓度的环糊精对MnP降解BDE47无显著性影响。胞内细胞色素P450对BDE47的降解没有明显贡献。
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| 关 键 词： | 四溴联苯醚 锰过氧化物酶 Tween80 β-环糊精 生物降解 |
Degradation of PBDEs by Manganese Peroxidase of White Rot Fungi Phanerochaete chrysosporium |
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| RUAN Jiu-li
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WANG Meng
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MAO Liang
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GAO Shi-xiang.Degradation of PBDEs by Manganese Peroxidase of White Rot Fungi Phanerochaete chrysosporium[J].Environmental Science and Technology,2012,35(1):20-24. |
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| Authors: | RUAN Jiu-li WANG Meng MAO Liang GAO Shi-xiang |
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| Institution: | *(State Key Laboratory of Pollution and Resource Reuse,School of Environment,Nanjing University,Nanjing 210046,China) |
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| Abstract: | This paper describes a laboratory experiment on aerobic degradation of 2,2’,4,4’-tetraBDE(BDE47),one of the commonly found congeners of PBDEs(polybrominated diphenyl ethers),by manganese peroxidase(MnP) which is produced by means of agitated culture of Phanerochaete chrysosporium.Influences of β-cyclodextrin of different concentrations on the biodegradation were investigated as well.The experimental result showed that BDE47 could be degraded by MnP with the degradation rate of about 70% through 15 day incubation and very little influence on the degradation of MnP was detected. |
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| Keywords: | 2 2’ 4 4’-tetraBDE(BDE47) manganese peroxidase Tween 80 β-cyclodextrin biodegradation |
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