Metabolism of ferulic acid by Paecilomyces variotti and Pestalotia palmarum
Ferulic acid metabolism was studied in cultures of two micromycetes producing different amounts of phenol oxidases. In cultures of the low phenol oxidase producer Paecilomyces varioti , ferulic acid was decarboxylated to 4-vinylguaiacol, which was converted to vanillin and then either oxidized to va...
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Veröffentlicht in: | Applied and environmental microbiology 1989, Vol.55 (9), p.2391-2398 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Ferulic acid metabolism was studied in cultures of two micromycetes producing different amounts of phenol oxidases. In cultures of the low phenol oxidase producer Paecilomyces varioti , ferulic acid was decarboxylated to 4-vinylguaiacol, which was converted to vanillin and then either oxidized to vanillic acid or reduced to vanillyl alcohol. Vanillic acid underwent simultaneously an oxidative decarboxylation to methoxyhydroquinone and a nonoxidative decarboxylation to guaiacol. Methoxyhydroquinone and guaiacol were demethylated to yield hydroxyquinol and catechol, respectively. Catechol was hydroxylated to pyrogallol. Degradation of ferulic acid by Paecilomyces varioti proceeded mainly via methoxyhydroquinone. |
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ISSN: | 0099-2240 1098-5336 |