Biotransformation of biphenyl by the filamentous fungus <i>Talaromyces helicus</i>
The filamentous fungus <i>Talaromyces helicus</i>, isolated from oil-contaminated sludge, oxidizes biphenyl via 4-hydroxybiphenyl to the dihydroxylated derivatives 4,4′-dihydroxybiphenyl and 3,4-dihydroxybiphenyl, which, to a certain extent, are converted to glycosyl conjugates. The suga...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2005 |
| País: | Argentina |
| Institución: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/146254 |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/146254 |
| Access Level: | acceso abierto |
| Palabra clave: | Ciencias Naturales Ciencias Exactas biphenyl degradation filamentous fungi oxidation products ring fission Talaromyces |
| Sumario: | The filamentous fungus <i>Talaromyces helicus</i>, isolated from oil-contaminated sludge, oxidizes biphenyl via 4-hydroxybiphenyl to the dihydroxylated derivatives 4,4′-dihydroxybiphenyl and 3,4-dihydroxybiphenyl, which, to a certain extent, are converted to glycosyl conjugates. The sugar moiety of the conjugate formed from 4,4′-dihydroxybiphenyl was identified as glucose. Further metabolites: 2-hydroxybiphenyl, 2,5-dihydroxylated biphenyl, and the ring cleavage product 4-phenyl-2-pyrone-6-carboxylic acid accumulated only in traces. From these results the main pathway for biotransformation of biphenyl in <i>T. helicus</i> could be proposed to be the excretion of dihydroxylated derivatives (>75%) and their glucosyl conjugates (<25%). |
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