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首页> 外文期刊>The Science of the Total Environment >Exploring the potential of novel biomixtures and Lentinula edodes fungus for the degradation of selected pesticides. Evaluation for use in biobed systems
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Exploring the potential of novel biomixtures and Lentinula edodes fungus for the degradation of selected pesticides. Evaluation for use in biobed systems

机译：探索新型生物混合物和香菇真菌降解某些农药的潜力。评估在生物床系统中的使用

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摘要

An approach to reduce the contamination of water sources with pesticides is the use of biopurificaction systems. The active core of these systems is the biomixture. The composition of biomixtures depends on the availability of local agro-industrial wastes and design should be adapted to every region. In Portugal, cork processing is generally regarded as environmentally friendly and would be interesting to find applications for its industry residues. In this work the potential use of different substrates in biomixtures, as cork (CBX); cork and straw, coat pine and LECA (Light Expanded Clay Aggregates), was tested on the degradation of terbuthylazine, difenoconazole, diflufenican and pendimethalin pesticides. Bioaugmentation strategies using the white-rot fungus lentinula edodes inoculated into the CBX, was also assessed. The results obtained from this study clearly demonstrated the relevance of using natural biosorbents as cork residues to increase the capacity of pesticide dissipation in biomixtures for establishing biobeds. Furthermore, higher degradation of all the pesticides was achieved by use of bioaugmented biomixtures. Indeed, the biomixtures inoculated with L. edodes ELI were able to mineralize the selected xenobiotics, revelling that these white-rot fungi might be a suitable fungus for being used as inoculum sources in on-farm sustainable biopurifkation system, in order to increase its degradation efficiency. After 120 days, maximum degradation of terbuthylazine, difenoconazole, diflufenican and pendimethalin, of bioaugmented CBX, was 89.9%, 75.0%, 65.0% and 99.4%, respectively. The dominant metabolic route of terbuthylazine in biomixtures inoculated with L. edodes ELI proceeded mainly via hydroxylation, towards production of terbuthylazine-hydroxy-2 metabolite. Finally, sorpn'on process to cork by pesticides proved to be a reversible process, working cork as a mitigating factor reducing the toxicity to microorganisms in the biomixture, especially in the early stages.
机译：减少农药对水源的污染的一种方法是使用生物净化系统。这些系统的活性核心是生物混合物。生物混合物的组成取决于当地农用工业废物的可获得性，其设计应适合每个地区。在葡萄牙，软木加工通常被认为是环保的，因此寻找其工业残留物的应用将很有趣。在这项工作中，不同的底物在生物混合物中的潜在用途，如软木塞（CBX）；测试了软木塞和稻草，松树大衣和LECA（轻质膨胀粘土团聚体）对丁丁嗪，二苯并康唑，二氟苯醚和二甲戊乐灵农药的降解能力。还评估了使用接种到CBX中的香菇白腐菌的生物强化策略。从这项研究中获得的结果清楚地证明了使用天然生物吸附剂作为软木塞残留物以增加生物混合物中农药消散能力以建立生物床的相关性。此外，通过使用生物增强的生物混合物可以实现所有农药的更高降解。的确，用香菇乳杆菌接种的生物混合物能够使选定的异种生物矿化，这表明这些白腐真菌可能是适合用作农场可持续生物纯化系统接种物的真菌，以增加其降解能力。效率。 120天后，生物增强型CBX的丁苯噻嗪，二苯并噻唑，二氟苯醚和二甲戊灵的最大降解分别为89.9％，75.0％，65.0％和99.4％。香菇乳杆菌ELI接种的生物混合物中的丁苯哒嗪的主要代谢途径主要是通过羟基化来进行，从而产生了叔丁嗪-羟基-2代谢产物。最后，通过农药对软木塞的吸收过程被证明是可逆的过程，将软木塞作为缓解因子，可降低生物混合物中微生物对微生物的毒性，尤其是在早期阶段。

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  • 来源
    《The Science of the Total Environment》 |2016年第15期|1372-1381|共10页
  • 作者

    A.P. Pinto; S.C. Rodrigues; A.T.Caldeira; D.M.Teixeira;

  • 作者单位

    Chemistry Department of Science and Technology School, Evora University, Rua Romao Ramalho 59, 7000-671 Evora, Portugal,ICAAM - Institute of Mediterranean Agricultural and Environmental Sciences, Evora University, Portugal;

    Chemistry Department of Science and Technology School, Evora University, Rua Romao Ramalho 59, 7000-671 Evora, Portugal;

    Chemistry Department of Science and Technology School, Evora University, Rua Romao Ramalho 59, 7000-671 Evora, Portugal,HERCULES Laboratory, Evora University, Portugal;

    Chemistry Department of Science and Technology School, Evora University, Rua Romao Ramalho 59, 7000-671 Evora, Portugal,HERCULES Laboratory, Evora University, Portugal;

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

    Bioaugmentation; Difenoconazole; Diflufenican; Pendimethalin; Terbuthylazine; Lentinula edodes;

    机译：生物强化Difenoconazole;双氟苯胺;二甲戊灵;丁丁嗪;香菇;

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