Biotransformation of biphenyl by the filamentous fungus <Emphasis Type="Italic">Talaromyces helicus</Emphasis> |
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Authors: | Maria?C?Romero Email author" target="_blank">Elke?HammerEmail author Renate?Hanschke Angelica?M?Arambarri Frieder?Schauer |
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Institution: | (1) Instituto Botanica Spegazzini, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Argentina;(2) Institut für Mikrobiologie, Ernst-Moritz-Arndt-Universität Greifswald, F.-L.-Jahn-Str. 15, Greifswald, 17487, Germany |
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Abstract: | The filamentous fungusTalaromyces helicus , 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 T. helicus could be proposed to be the excretion of dihydroxylated derivatives (>75%) and their glucosyl conjugates (<25%). |
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Keywords: | Biphenyl degradation filamentous fungi oxidation products ring fission Talaromyces |
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