Adsorption capacity as a key parameter for enzyme induction and pentachlorophenol degradation inMycobacterium chlorophenolicum PCP-1

Brandt, S; Zeng, An‐Ping; Deckwer, Wolf‐Dieter

doi:10.1002/(sici)1097-0290(19991005)65:1<93::aid-bit11>3.0.co;2-5

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…The hydrophobic cell surfaces of Mycobacteria have been proposed to increase contact with the organic matter and therefore with the hydrophobic contaminant (Briglia et al 1994). One study addressing this found adsorption capacity to be an inherent key parameter for degradation of pentachlorophenol by Mycobacterium chlorophenolicum (Brandt et al 1999). In this regard, it is interesting that from a total of 20 soil samples that we have screened from different farms in the Narrabri district of NSW (Australia), we have only isolated two endosulfandegrading bacteria.…”

Section: Discussionmentioning

confidence: 98%

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Isolation and characterization of a Mycobacterium strain that metabolizes the insecticide endosulfan

et al. 2002

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Aim: The aim of this study was to isolate and characterize a bacterium capable of metabolizing endosulfan. Methods and Results: A endosulfan-degrading bacterium (strain ESD) was isolated from soil inoculum after repeated culture with the insecticide as the sole source of sulfur. Analysis of its 16S rRNA gene sequence, and morphological and physiological characteristics revealed it to be a new fast-growing Mycobacterium, closely related to other Mycobacterium species with xenobioticdegrading capabilities. Degradation of endosulfan by strain ESD involved both oxidative and sulfur-separation reactions. Strain ESD did not degrade endosulfan when sulfite, sulphate or methionine were present in the medium along with the insecticide. Partial degradation occurred when the culture was grown, with endosulfan, in the presence of MOPS (3-(N-morpholino)-propane sulphonic acid), DMSO (dimethyl sulfoxide), cysteine or sulphonane and complete degradation occurred in the presence of gutathione. When both beta-endosulfan and low levels of sulphate were provided as the only sources of sulfur, biphasic exponential growth was observed with endosulfan metabolism being restricted to the latter phase of exponential growth. Conclusions: This study isolated a Mycobacterium strain (strain ESD) capable of metabolizing endosulfan by both oxidative and sulfur-separation reactions. The endosulfan-degrading reactions are a result of the sulfur-starvation response of this bacterium. Significance and Impact of the Study: This describes the isolation of a Mycobacterium strain capable of degrading the insecticide endosulfan. This bacterium is a valuable source of enzymes for use in enzymatic bioremediation of endosulfan residues.

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Section: Discussionmentioning

confidence: 98%

“…1994). One study addressing this found adsorption capacity to be an inherent key parameter for degradation of pentachlorophenol by Mycobacterium chlorophenolicum (Brandt et al . 1999).…”

Section: Discussionmentioning

confidence: 99%

Isolation and characterization of a Mycobacterium strain that metabolizes the insecticide endosulfan

et al. 2002

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“…Adsorption and partition at the water-sediment interface is an important mechanism for the removal of organic pollutants from the water column. The fate, stability and transport of pollutants in a marine environment also largely depend on their adsorption onto sediment (Brandt et al, 1999;Cornelissen et al, 2005). Research has shown that hydrophobic organic contaminants are mostly distributed on suspended solids and in the bottom sediment rather than in the aqueous phase (Voice and Weber, 1983;Cornelissen et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Organic diagenesis in sediment and its impact on the adsorption of bisphenol A and nonylphenol onto marine sediment

Fei

2011

Marine Pollution Bulletin

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Hydrophobic organic contaminants in marine water are mostly adsorbed onto (partitioned into) sediment organic matter (SOM). To study the impact of SOM diagenesis on sediment adsorption properties, artificial sediment with rich SOM content was incubated for more than 120 days. The sediment was sampled every week, and batch sediment adsorption tests were conducted with bisphenol A (BPA) and nonylphenol (NP) as the model pollutants. The results show that the amount of organic matter loaded in the sediment decreased by nearly 80% during incubation. For the incubated sediment, the BPA partition coefficient, Kd, decreased whereas the organic normalized partition coefficient, Koc, more than doubled. The experiments with NP show an even greater increase in Koc. Organic matter diagenesis shows a profound effect on the adsorption behavior of sediment, as the SOM residue has an increasing affinity and partition capacity for organic contaminants.

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Occurrence of pharmaceutical residues in marine sediments

Prado

Rodríguez-Varela

Castro-Gutiérrez

2021

Pharmaceuticals in Marine and Coastal Environments

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Adsorption capacity as a key parameter for enzyme induction and pentachlorophenol degradation inMycobacterium chlorophenolicum PCP-1

Cited by 6 publications

References 16 publications

Isolation and characterization of a Mycobacterium strain that metabolizes the insecticide endosulfan

Isolation and characterization of a Mycobacterium strain that metabolizes the insecticide endosulfan

Organic diagenesis in sediment and its impact on the adsorption of bisphenol A and nonylphenol onto marine sediment

Occurrence of pharmaceutical residues in marine sediments

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