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Bioconversion of poly(vinyl alcohol) to vanillin in a <Emphasis Type="Italic">Phanerochaete chrysosporum</Emphasis> culture medium |
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| Authors: | |
| Affiliation: | (1) Departamento de Farmacia, Facultad de Química Farmacéutica, Grupo Biotecnología, Universidad de Antioquia, Medellin, Colombia, AA 1226,;(2) Instituto de Química, Grupo Ciencia de los Materiales, Universidad de Antioquia, Medellin, Colombia, AA 1226,;(3) Department of Physical Chemistry, Gerhard-Mercator-University, D-47048 Duisburg, Germany, |
| Abstract: | The bioconversion of Phanerochaete chrysosporium cultures in aqueous poly(vinyl alcohol) – PVAL – solutions was studied. A 50% weight loss was observed within 20 days, caused by a ligninperoxidase – LiP – enzyme which is produced during the secondary metabolism of Phanerochaete chrysosporium. The changes of the chemical structure of PVAL were studied by UV- and IR-spectroscopy. The presence of vanillin – the major metabolic reaction product, benzaldehyde, and veratrylalcohol was determined chromatographically (HPLC) in the extra cellular medium after different reaction times. A possible mechanism of the biological degradation is outlined. |
| Keywords: | Biodegradation Poly(vinyl alcohol) Vanillin Phanerochaete chrysosporium |
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