DOI: 10.1016/j.watres.2018.02.053
Scopus记录号: 2-s2.0-85047392744
论文题名: Evidences of extracellular abiotic degradation of hexadecane through free radical mechanism induced by the secreted phenazine compounds of P. aeruginosa NY3
作者: Nie H. ; Nie M. ; Wang L. ; Diwu Z. ; Xiao T. ; Qiao Q. ; Wang Y. ; Jiang X.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 139 起始页码: 434
结束页码: 441
语种: 英语
英文关键词: Degradation
; Free radical
; Hexadecane
; P. aeruginosa NY3
; Phenazine compounds
Scopus关键词: Amides
; Degradation
; Electron spin resonance spectroscopy
; Free radical reactions
; Magnetic moments
; Organic pollutants
; Oxidation
; Paraffins
; Reaction kinetics
; Reducing agents
; Degradation efficiency
; Free radical mechanism
; Hexadecane
; Nicotinamide adenine dinucleotides
; P.aeruginosa
; Phenazine compounds
; Phenazine-1-carboxylic acid
; Superoxide anion radicals
; Free radicals
; free radical
; glutathione
; hexadecane
; hydroxyl radical
; nicotinamide adenine dinucleotide
; phenazine
; pyocyanine
; superoxide
; alkane
; free radical
; n-hexadecane
; phenazine derivative
; abiotic factor
; alkane
; bacterium
; chemical reaction
; degradation
; free radical
; induced response
; organic compound
; oxidation
; abiotic stress
; Article
; carbon source
; controlled study
; drug degradation
; electron spin resonance
; electrospray mass spectrometry
; extracellular fluid
; Fenton reaction
; high performance liquid chromatography
; in vitro study
; in vivo study
; nonhuman
; oxidation reduction potential
; priority journal
; Pseudomonas aeruginosa
; tandem mass spectrometry
; chemistry
; metabolism
; oxidation reduction reaction
; Pseudomonas aeruginosa
; Pseudomonas
; Pseudomonas aeruginosa
; Alkanes
; Electron Spin Resonance Spectroscopy
; Free Radicals
; Glutathione
; NAD
; Oxidation-Reduction
; Phenazines
; Pseudomonas aeruginosa
英文摘要: The aim of this work was to investigate the effects of secreted extracellular phenazine compounds (PHCs) on the degradation efficiency of alkanes by P. aeruginosa NY3. Under aerobic conditions, the PHCs secreted by P. aeruginosa NY3 initiate the oxidation of alkanes outside cells, in coupling with some reducing agents, such as β-Nicotinamide adenine dinucleotide, reduced disodium salt (NADH) or reduced glutathione (GSH). This reaction might be via free radical reactions similar to Fenton Oxidation Reaction (FOR). P. aeruginosa NY3 secretes pyocyanin (Pyo), 1-hydroxyphenazine (HPE), phenazine-1-carboxylic acid (PCA), and phenazine-1-amide (PCN) simultaneously. The cell-free extracellular fluid containing these four PHCs degrades hexadecane effectively. The observation of Electron Spin Resonance (EPR) signals of superoxide anion radical ([rad]O2 −), hydroxyl radical ([rad]OH) and/or carbon free radicals ([rad]R) both in vivo and in vitro suggested the degradation of hexadecane could be via a free radical pathway. Secretion of PHCs has been found to be characteristic of Pseudomonas which is often involved in or related to the degradation of organic pollutants. Our work suggested that certain organic contaminants may be oxidized through ubiquitously extracellular abiotic degradation by the free radicals produced during bio-remediation and bio-treatment. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112766
Appears in Collections: 气候减缓与适应
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作者单位: School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an, Shaanxi Province 710055, China
Recommended Citation:
Nie H.,Nie M.,Wang L.,et al. Evidences of extracellular abiotic degradation of hexadecane through free radical mechanism induced by the secreted phenazine compounds of P. aeruginosa NY3[J]. Water Research,2018-01-01,139