Complete degradation of di-n-octyl phthalate by biochemical cooperation between Gordonia sp. strain JDC-2 and Arthrobacter sp. strain JDC-32 isolated from activated sludge

Wu, Xueling; Liang, Renxing; Dai, Qinyun; Jin, Decai; Wang, Yangyang; Chao, Wei-Liang

doi:10.1016/j.jhazmat.2009.11.022

Cited by 132 publications

(58 citation statements)

References 33 publications

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“…Since the only difference between these treatments was soil moisture regime, we can conclude that both photodecomposition and hydrolysis of PAEs proceed very slowly and the key method to eliminate the pollutants is the biodegradation approach (Wolfe et al 1980). Most PAEs are readily degraded under aerobic conditions but much more slowly in anaerobic environments, especially in the case of DEHP and DnOP (Ziogou et al 1989;Wu et al 2010;Yuan et al 2010). Under flooded conditions, the degradation of all the target pollutants is slowed down by oxygen limitation, and the soil would continue to receive contamination by atmospheric deposition.…”

Section: Resultsmentioning

confidence: 99%

Phthalate esters contamination in soil and plants on agricultural land near an electronic waste recycling site

Ting

Christie

Luo

et al. 2012

Environ Geochem Health

107

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The accumulation of phthalic acid esters (PAEs) in soil and plants in agricultural land near an electronic waste recycling site in east China has become a great threat to the neighboring environmental quality and human health. Soil and plant samples collected from land under different utilization, including fallow plots, vegetable plots, plots with alfalfa (Medicago sativa L.) as green manure, fallow plots under long-term flooding and fallow plots under alternating wet and dry periods, together with plant samples from relative plots were analyzed for six PAE compounds nominated as prior pollutants by USEPA. In the determined samples, the concentrations of six target PAE pollutants ranged from 0.31-2.39 mg/kg in soil to 1.81-5.77 mg/kg in various plants (dry weight/ DW), and their bioconcentration factors (BCFs) ranged from 5.8 to 17.9. Health risk assessments were conducted on target PAEs, known as typical environmental estrogen analogs, based on their accumulation in the edible parts of vegetables. Preliminary risk assessment to human health from soil and daily vegetable intake indicated that DEHP may present a high-exposure risk on all ages of the population in the area by soil ingestion or vegetable consumption. The potential damage that the target PAE compounds may pose to human health should be taken into account in further comprehensive risk assessments in e-waste recycling sites areas. Moreover, alfalfa removed substantial amounts of PAEs from the soil, and its use can be considered a good strategy for in situ remediation of PAEs.

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Section: Resultsmentioning

confidence: 99%

Phthalate esters contamination in soil and plants on agricultural land near an electronic waste recycling site

Ting

Christie

Luo

et al. 2012

Environ Geochem Health

107

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“…However, when it Environ Sci Pollut Res (2015) 22:12018-12028comes to the decreasing of PAE content, it has been concluded that both photodecomposition and hydrolysis of PAEs proceed very slowly and the key method to eliminate the pollutants is the biodegradation approach (Wolfe et al 1980). Most PAEs are readily degraded under aerobic conditions but more slowly in anaerobic environments, especially DEHP and DnOP (Ziogou et al 1989;Wu et al 2010;Yuan et al 2010). …”

Section: Resultsmentioning

confidence: 99%

Phthalate esters contamination in soils and vegetables of plastic film greenhouses of suburb Nanjing, China and the potential human health risk

Ting

Chen

et al. 2015

Environ Sci Pollut Res

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The contamination of phthalate esters (PAEs) has become a potential threat to the environment and human health because they could be easily released as plasticizers from the daily supply products, especially in polyethylene films. Concentration levels of total six PAEs, nominated as priority pollutants by the US Environmental Protection Agency (USEPA), were investigated in soils and vegetables from four greenhouse areas in suburbs of Nanjing, East China. Total PAEs concentration ranged from 930±840 to 2 450±710 μg kg −1 (dry weight (DW)) in soil and from 790 ± 630 to 3 010 ± 2 130 μg kg −1 in vegetables. Higher concentrations of PAEs were found in soils except in Suo Shi (SS) area and in vegetables, especially in potherb mustard and purple tsai-tai samples. Risk assessment mainly based on the exposures of soil ingestion and daily vegetable intake indicated that bis(2-ethylhexyl) phthalate (DEHP) in the samples from Gu Li (GL) and Hu Shu (HS) exhibited the highest hazard to children less than 6-year old. Therefore, the human health risk of the PAEs contamination in soils and vegetables should greatly be of a concern, especially for their environmental estrogen analog effects.

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“…Several studies have reported the use of this specie in the degradation of aliphatic compounds, 25 crude oil, 15,26 diesel, 13 biodiesel, 14 some PAHs 16,27 and di-n-octyl phthalate. 17 However, there is a paucity of studies on enzyme degradation use by Gordonia for bioremediation. Furthermore, there are few studies on dioxygenases produced by actinomycetes in the treatment of waste contaminated with aromatic pollutants.…”

Section: Discussionmentioning

confidence: 99%

“…12 Catechol 2,3-dioxygenase (EC 1.13.11.2) however, belongs to the extradiol cleaving enzyme class and has four identical subunits of 32KDa and contains a catalytic iron ion (Fe 2+ ) per subunit. Some species of Gordonia have been used for biodegradation of organic compounds such as diesel, 13 biodiesel, 14 crude oil, 15 some PAHs such as dibenzothiophene (DBT), 16 di-n-octyl phthalate, 17 and some aliphatic and aromatic hydrocarbons. 18 Although detection of catechol 1,2-dioxygenase produced by Gordonia spp.…”

Section: Introductionmentioning

confidence: 99%

Enzymatic activity of catechol 1,2-dioxygenase and catechol 2,3-dioxygenase produced by Gordonia polyisoprenivorans

Silva¹,

Camargo²,

Andreazza³

et al. 2012

Quím. Nova

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Recebido em 23/1/12; aceito em 23/4/12; publicado na web em 20/7/2012 This study aimed to evaluate the environmental conditions for enzyme activity of catechol 1,2-dioxygenase (C1,2O) and catechol 2,3-dioxygenase (C2,3O) produced by Gordonia polyisoprenivorans in cell-free and immobilized extracts. The optimum conditions of pH, temperature, time course and effect of ions for enzyme activity were determined. Peak activity of C1,2O occurred at pH 8.0. The isolate exhibited the highest activity of C2,3O at pH 7.0 and 8.0 for the cell-free extract and immobilized extract, respectively. This isolate exhibited important characteristics such as broad range of pH, temperature and time course for enzyme activity.

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Complete degradation of di-n-octyl phthalate by biochemical cooperation between Gordonia sp. strain JDC-2 and Arthrobacter sp. strain JDC-32 isolated from activated sludge

Cited by 132 publications

References 33 publications

Phthalate esters contamination in soil and plants on agricultural land near an electronic waste recycling site

Phthalate esters contamination in soil and plants on agricultural land near an electronic waste recycling site

Phthalate esters contamination in soils and vegetables of plastic film greenhouses of suburb Nanjing, China and the potential human health risk

Enzymatic activity of catechol 1,2-dioxygenase and catechol 2,3-dioxygenase produced by Gordonia polyisoprenivorans

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