The Biodegradation of Low-molecular-weight Urethane Compounds by a Strain of Exophiala jeanselmei

Article abstract of DOI:10.1271/bbb.60.244

To further analyze the biodegradation of polyurethane polymers, we investigated the biodegradation of low-molecular-weight N-tolylcarbamate model compounds with structures closely resembling the urethane linkages found in polyurethanes based on tolylene-diisocyanate (TDT). Soil microflora were screened for microorganisms that were able to utilize toluene-2,4-dicarbamic acid, diethyl ester (compound 1) as the sole source of carbon, and the soil fungus Exophiala jeanselmei strain REN-11A was selected as the most effective strain. Several N-tolylcarbamate compounds were used, and it was found that REN-11A was able to degrade compound 1, as well as the related compound toluene-2,6-dicarbamic acid, diethyl ester, very efficiently. Further investigation showed that compound 1 was biodegraded to tolylene-2,4-diamine via the aromatic amine intermediates carbamic acid, (3-amino-4-methylphenyl)-, ethyl ester and carbamic acid, (5-amino-2-methylphenyl)-, ethyl ester.

Full text of DOI:10.1271/bbb.60.244

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The Biodegradation of Low-molecular-weight
Urethane Compounds by a Strain of Exophiala
jeanselmei
Stephen Owena, Takahito Otania, Satoshi Masaokaa & Tatsuhiko Oheab
a Central Laboratory, Rengo Co., Ltd, Ohhiraki 4–1–186, Fukushima-ku, Osaka, 553, Japan
b The Osaka Municipal Technical Research Institute, Morinomiya 1–6–50, Joto-ku, Osaka,
536, japan
Published online: 12 Jun 2014.
To cite this article: Stephen Owen, Takahito Otani, Satoshi Masaoka & Tatsuhiko Ohe (1996) The Biodegradation of Low-
molecular-weight Urethane Compounds by a Strain of Exophiala jeanselmei, Bioscience, Biotechnology, and Biochemistry,
60:2, 244-248, DOI: 10.1271/bbb.60.244
To link to this article: http://dx.doi.org/10.1271/bbb.60.244
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