Biodegradation of dibromoneopentyl glycol by a bacterial consortium

Segev, Osnat; Abeliovich, Aharon; Kushmaro, Ariel

doi:10.1016/j.chemosphere.2007.01.014

Cited by 10 publications

(18 citation statements)

References 26 publications

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“…5). Alignment of these sequences with previously published consortium sequences (Segev et al 2007) reveals that there is one mutually related species. Clone DBNPG 64 and the excised DGGE band RH Soil 227 are closely related to Sinorhizobium sp.…”

Section: Resultsmentioning

confidence: 92%

“…Our previous attempts to isolate debrominating bacteria on different agar plates were not successful; bacterial isolates grown on agar plates did not show biodegradation activity (Segev et al 2007). In order to characterize the bacterial consortium involved in the observed biodegradation, a clone library of PCRamplified 16S rRNA genes was applied to the consortium grown on the DBNPG-YE medium.…”

Section: Resultsmentioning

confidence: 98%

“…Previously, we reported the complete biodegradation of DBNPG in a soil-dependent enrichment culture (Segev et al 2007). After 16 sequential transfers, we established a stable bacterial consortium capable of biodegrading DBNPG without the presence of sterile soil in the medium but with an addition of yeast extract.…”

Section: Discussionmentioning

confidence: 98%

“…In a previous study, we demonstrated the complete bacterial biodegradation of DBNPG and the resulting accumulation of bromides in the tested solution, indicating debromination (Segev et al 2007). DBNPG was found to be biodegraded by a bacterial consortium under aerobic conditions in an enrichment culture containing sterile soil in the medium (the source of the bacterial consortium was contaminated soil from the Ramat Hovav Industrial Park, located in the Negev desert, Israel.…”

Section: Introductionmentioning

confidence: 95%

“…After 16 sequential transfers of the bacterial consortium, capable of biodegrading DBNPG to a soildependent enrichment culture (Segev et al 2007), we established a stable bacterial consortium, capable of biodegrading DBNPG without the presence of sterile soil in the medium. DBNPG and TBNPA biodegradation experiments with the bacterial consortium were conducted on this soil-free enrichment culture medium.…”

Section: Bacterial Consortiummentioning

confidence: 99%

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Aerobic biodegradation of the brominated flame retardants, dibromoneopentyl glycol and tribromoneopentyl alcohol

et al. 2009

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Halogenated organic compounds constitute one of the largest and most diverse groups of chemicals in the environment. Many of these compounds are toxic, persistent and, as a result of their often limited biodegradability, tend to bioaccumulate in the environment. Dibromoneopentyl glycol (DBNPG) and tribromoneopentyl alcohol (TBNPA) are brominated flame retardants commonly used as additives during the manufacture of plastic polymers and as chemical intermediates in the synthesis of other flame retardants. Both are classified as not readily biodegradable. In this paper, we demonstrate the biodegradation of both DBNPG and TBNPA by a common bacterial consortium under aerobic conditions in enrichment cultures containing yeast extract. DBNPG and TBNPA biodegradation is accompanied by a release of bromide into the medium, due to a biological debromination reaction. Molecular analysis of the clone library PCR amplified 16S rRNA gene was used to characterize the bacterial consortium involved in the biodegradation.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 95%

Section: Bacterial Consortiummentioning

confidence: 99%

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