A study of biodegradation/γ-irradiation on the degradation of p-chloronitrobenzene

Bao, Hongduo; Gao, Jie; Liu, Yuanxia; Su, Yongjie

doi:10.1016/j.radphyschem.2009.05.005

Cited by 14 publications

(5 citation statements)

References 9 publications

(5 reference statements)

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“…There are many different methods used for the biodegradation of halocompounds containing aromatic rings using algae [ 22 , 23 ], bacteria [ 24 , 25 , 26 ], fungi [ 27 , 28 , 29 , 30 ]. There are fewer reports about dehalogenation of non-aromatic compounds.…”

Section: Introductionmentioning

confidence: 99%

Fungal Strains as Catalysts for the Biotransformation of Halolactones by Hydrolytic Dehalogenation with the Dimethylcyclohexane System

Grabarczyk

2012

Molecules

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Bicyclic chloro-, bromo- and iodo-γ-lactones with dimethylcyclohexane rings were used as substrates for bioconversion by several fungal strains (Fusarium, Botrytis and Beauveria). Most of the selected microorganisms transformed these lactones by hydrolytic dehalogenation into the new compound cis-2-hydroxy-4,6-dimethyl-9-oxabicyclo[4.3.0]- nonan-8-one, mainly the (−)-isomer. When iodo-γ-lactone was used as the substrate, two products were observed: a hydroxy-γ-lactone and an unsaturated lactone. The structures of all substrates and products were established on the basis of their spectral data. The mechanism of dehalogenation of three halolactones was also studied.

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Section: Introductionmentioning

confidence: 99%

Fungal Strains as Catalysts for the Biotransformation of Halolactones by Hydrolytic Dehalogenation with the Dimethylcyclohexane System

Grabarczyk

2012

Molecules

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“…Electrochemically active Aeromonas was capable of reducing nitroaromatics 1-nitropyrene to aromatic amine 1-aminopyrene (Kinouchi et al, 1982;Pham et al, 2003). Vagococcus was capable of biodegrading p-chloronitrobenzene (Bao et al, 2009). Importantly, the relative abundances of Aeromonas (r ¼ À0.79, P ¼ 0.019) and Vagococcus (r ¼ À0.66, P ¼ 0.075) showed a significant negative correlation to the maximal AMCl 2 yield under the opened circuit mode (pure anaerobic bioreduction).…”

Section: The Potential Function Of Dominant Generamentioning

confidence: 99%

“…Firstly, most of the dominant genera (Aeromonas, Raoultella, Enterococcus, Citrobacter, Desulfovibrio and Clostridium) are capable of reducing nitroaromatics to corresponding aromatic amines or biodegradation of nitroraomatics (Vagococcus) (Bao et al, 2009;Howard et al, 1983;Kinouchi et al, 1982;Liang et al, 2014;Spain, 1995). Subsequently, most of the dominant genera were identified with electrochemical activity (Aeromonas, Citrobacter, Lactococcus, Desulfovibrio and Clostridium) (Kumar et al, 2015;Logan, 2009) or dominated in biocathode communities (Raoultella and Enterococcus) Wang et al, 2011).…”

Section: The Potential Function Of Dominant Generamentioning

confidence: 99%

Low temperature acclimation with electrical stimulation enhance the biocathode functioning stability for antibiotics detoxification

Liang

Kong

et al. 2016

Water Research

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a b s t r a c tImprovement of the stability of functional microbial communities in wastewater treatment system is critical to accelerate pollutants detoxification in cold regions. Although biocathode communities could accelerate environmental pollutants degradation, how to acclimate the cold stress and to improve the catalytic stability of functional microbial communities are remain poorly understood. Here we investigated the structural and functional responses of antibiotic chloramphenicol (CAP) reducing biocathode communities to constant low temperature 10 C (10-biocathode) and temperature elevation from 10 C to 25 C (S25-biocathode). Our results indicated that the low temperature acclimation with electrical stimulation obviously enhanced the CAP nitro group reduction efficiency when comparing the aromatic amine product AMCl 2 formation efficiency with the 10-biocathode and S25-biocathode under the opened and closed circuit conditions. The 10-biocathode generated comparative AMCl maximum as the S25-biocathode but showed significant lower dehalogenation rate of AMCl 2 to AMCl. The continuous low temperature and temperature elevation both enriched core functional community in the 10-biocathode and S25-biocathode, respectively. The 10-biocathode functioning stability maintained mainly through selectively enriching cold-adapted functional species, coexisting metabolically similar nitroaromatics reducers and maintaining the relative abundance of key electrons transfer genes. This study provides new insights into biocathode functioning stability for accelerating environmental pollutants degradation in cold wastewater system.

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“…The capability of algae , bacteria , and fungi to degrade halogenated compounds has been studied in order to determine the decomposition of these compounds in the environment. Other goals were studies over the mechanism of dehalogenation, the reduction in environmental pollution, and improvement of wastewater management.…”

Section: Introductionmentioning

confidence: 99%

Dehalogenation Activity of Selected Fungi Toward δ‐Iodo‐γ‐Lactone Derived from trans,trans‐Farnesol

Gliszczyńska

Gładkowski

Świtalska

et al. 2016

Chemistry & Biodiversity

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Time‐course of biotransformation of racemic trans‐4‐((E)‐4′,8′‐dimethylnona‐3′,7′‐dien‐1‐yl)‐5‐iodomethyl‐4‐methyldihydrofuran‐2‐one (1) in fungal and yeast cultures was investigated. In these conditions, the substrate 1 was enantioselectively dehalogenated yielding 4‐((E)‐4′,8′‐dimethylnona‐3′,7′‐dien‐1‐yl)‐4‐methyl‐5‐methylenedihydrofuran‐2‐one (2) and its structure was established based on the spectroscopic data. The most effective biocatalyst used was Didymosphaeria igniaria, which catalyzed the process with highest rate and enantioselectivity (ee of product = 76%). The antiproliferative activity of δ‐iodo‐γ‐lactone 1, product of its biotransformation 2, and starting substrate (farnesol) were evaluated toward two cancer cell lines: A549 (human lung adenocarcinoma) and HL‐60 (human promyelocytic leukemia).

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A study of biodegradation/γ-irradiation on the degradation of p-chloronitrobenzene

Cited by 14 publications

References 9 publications

Fungal Strains as Catalysts for the Biotransformation of Halolactones by Hydrolytic Dehalogenation with the Dimethylcyclohexane System

Fungal Strains as Catalysts for the Biotransformation of Halolactones by Hydrolytic Dehalogenation with the Dimethylcyclohexane System

Low temperature acclimation with electrical stimulation enhance the biocathode functioning stability for antibiotics detoxification

Dehalogenation Activity of Selected Fungi Toward δ‐Iodo‐γ‐Lactone Derived from trans,trans‐Farnesol

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