Bacterial Degradation of Synthetic Polymers and Oligomers with the Special Reference to the Case of Polyethylene Glycol

Hosoya, Hiroyuki; Miyazaki, Nobuyoshi; Sugisaki, Yuji; Takanashi, Eishi; Tsurufuji, M; Yamasaki, Makari; Tamura, Gakuzo

doi:10.1080/00021369.1978.10863202

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…Aerobic microorganisms use both EG and PEGs as sources of carbon and energy (8,13,20,21). The aerobic metabolism of EG is relatively common, and the pathways of its metabolism are known (2,7,16,20,22,23).…”

Section: Ch2-o-)mentioning

confidence: 99%

Degradation of ethylene glycol and polyethylene glycols by methanogenic consortia

Dwyer¹,

Tiedje²

1983

Appl Environ Microbiol

129

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Section: Ch2-o-)mentioning

confidence: 99%

Degradation of ethylene glycol and polyethylene glycols by methanogenic consortia

Dwyer¹,

Tiedje²

1983

Appl Environ Microbiol

129

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“…Whereas short-chain PEGs with molecular weights up to 600 are aerobically degraded (16,33), PEGs with molecular weights higher than 1,000 are considered "bioresistant" (12). Other authors (20,24,26,27,32) have reported complete degradation of PEGs with molecular weights up to 20,000 by pure and mixed cultures of aerobic bacteria. The only effort to effect anaerobic degradation of PEGs reported so far (30) has been of limited success: production of methane was low, and biological oxygen demand of the substrate decreased by only 32%.…”

mentioning

confidence: 99%

Fermentative degradation of polyethylene glycol by a strictly anaerobic, gram-negative, nonsporeforming bacterium, Pelobacter venetianus sp. nov

Schink¹,

Stieb²

1983

Appl Environ Microbiol

164

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The synthetic polyether polyethylene glycol (PEG) with a molecular weight of 20,000 was anaerobically degraded in enrichment cultures inoculated with mud of limnic and marine origins. Three strains (Gra PEG 1, Gra PEG 2, and Ko PEG 2) of rod-shaped, gram-negative, nonsporeforming, strictly anaerobic bacteria were isolated in mineral medium with PEG as the sole source of carbon and energy. All strains degraded dimers, oligomers, and polymers of PEG up to a molecular weight of 20,000 completely by fermentation to nearly equal amounts of acetate and ethanol. The monomer ethylene glycol was not degraded. An ethylene glycol-fermenting anaerobe (strain Gra EG 12) isolated from the same enrichments was identified as Acetobacterium woodii. The PEG-fermenting strains did not excrete extracellular depolymerizing enzymes and were inhibited by ethylene glycol, probably owing to a blocking of the cellular uptake system. PEG, some PEG-containing nonionic detergents, 1,2-propanediol, 1,2-butanediol, glycerol, and acetoin were the only growth substrates utilized of a broad variety of sugars, organic acids, and alcohols. The isolates did not reduce sulfate, sulfur, thiosulfate, or nitrate and were independent of growth factors. In coculture with A. woodii or Methanospirillum hungatei, PEGs and ethanol were completely fermented to acetate (and methane). A marine isolate is described as the type strain of a new species, Pelobacter venetianus sp. nov. Its physiology and ecological significance, as well as the importance and possible mechanism of anaerobic polyether degradation, are discussed.

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Isolation and identification of low-density polyethylene (LDPE) biodegrading bacteria from waste landfill in Yazd

Nourollahi

Sedighi-Khavidak

Mokhtari

et al. 2018

International Journal of Environmental Studies

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Bacterial Degradation of Synthetic Polymers and Oligomers with the Special Reference to the Case of Polyethylene Glycol

Cited by 6 publications

References 5 publications

Degradation of ethylene glycol and polyethylene glycols by methanogenic consortia

Degradation of ethylene glycol and polyethylene glycols by methanogenic consortia

Fermentative degradation of polyethylene glycol by a strictly anaerobic, gram-negative, nonsporeforming bacterium, Pelobacter venetianus sp. nov

Isolation and identification of low-density polyethylene (LDPE) biodegrading bacteria from waste landfill in Yazd

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