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首页> 外文期刊>Journal of environmental science and health >Biodegradation of 1,1,1-trichloro-2,2-bis(4-chlorophenyl) ethane (DDT) by using Serratia marcescens NCIM 2919
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Biodegradation of 1,1,1-trichloro-2,2-bis(4-chlorophenyl) ethane (DDT) by using Serratia marcescens NCIM 2919

机译:使用粘质沙雷氏菌NCIM 2919生物降解1,1,1-三氯-2,2-双(4-氯苯基)乙烷(DDT)

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摘要

A solvent tolerant bacterium Serratia marcescens NCIM 2919 has been evaluated for degradation of DDT (1,1,1-trichloro-2,2-b/s (4-chlorophenyl) ethane). The bacterium was able to degrade up to 42% of initial 50 mg L~(-1) of DDT within 10 days of incubation. The highlight of the work was the elucidation of DDT degradation pathway in S. marcescens. A total of four intermediates metabolites viz 2,2-bis (chlorophenyl)-1,1-dichloroethane (DDD), 2,2-bis (chlorophenyl)-1,1-dichloroethylene (DDE), 2,2-bis (chlorophenyl)-1
机译:已经评估了耐溶剂细菌粘质沙雷氏菌NCIM 2919的DDT(1,1,1-三氯-2,2-b / s(4-氯苯基)乙烷)降解。在培养的10天之内,该细菌能够降解高达最初50 mg L〜(-1)的DDT的42%。这项工作的重点是阐明Marcescens中的DDT降解途径。共有四种中间体代谢物,即2,2-双(氯苯基)-1,1-二氯乙烷(DDD),2,2-双(氯苯基)-1,1-二氯乙烯(DDE),2,2-双(氯苯基) GC-Mass和FTIR鉴定了-1)氯乙烯(DDMU)和4-氯苯甲酸(4-CBA)。发现4-CBA是DDT降解的稳定产物。在存在不同浓度的外源DDD和DDE的情况下,通过茂盛的生长而暴露于4-CBA之前的代谢产物对菌株无毒。然而,观察到4-CBA抑制细菌的生长。因此,5。marcescens NCIM 2919的DDT降解效率可与4-CBA结合使用,利用菌株作为二元培养或DDT矿化的联合体。 5.苦苣苔NCIM 2919在滴滴涕污染的土壤上施用,处理18天后,滴滴涕的初始12.0 mg kg〜(-1)减少了74.7%。

著录项

  • 来源
    《Journal of environmental science and health》 |2016年第12期|809-816|共8页
  • 作者单位

    Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi, India;

    Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi, India;

    Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi, India;

    Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi, India;

    Department of Zoology, University of Delhi, New Delhi, India;

    Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi, India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    DDT; biodegradation; Serratia marcescens; pathway; metabolites;

    机译:滴滴涕;生物降解粘质沙雷氏菌;途径代谢物;

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