Decarboxylation of Ferulic Acid to 4-Vinyl Guaiacol by <Emphasis Type="Italic">Streptomyces setonii</Emphasis> |
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Authors: | Belén Max Julia Carballo Sandra Cortés Jose M Domínguez |
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Institution: | 1.Chemical Engineering Department, Faculty of Sciences,University of Vigo (Campus Ourense),Ourense,Spain;2.Laboratory of Agro-food Biotechnology,CITI-University of Vigo,Ourense,Spain;3.Microbiology Department, Faculty of Sciences,University of Vigo (Campus Ourense),Ourense,Spain |
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Abstract: | 4-Vinyl guaiacol (3-methoxy 4-hydroxystyrene) can be obtained by decarboxylation of ferulic acid by the strain Streptomyces setonii ATCC 39116. The formation of this metabolite was favoured by microaerobic conditions and the culture medium employed, increasing
progressively the product concentration from 543.3 up to 885.1 mg/l when aeration level was diminished, reaching a highest
volumetric productivity of 70.4 mg/l h and a product yield of 1.11 mol/mol. The identity of the metabolite was confirmed by
gas chromatography–mass spectrometry. A metabolic study of ferulic acid and the main degradation products (ferulic acid, 4-vinyl
guaiacol, protocatechuic acid, vanillyl alcohol, vanillic acid and vanillin) suggested that ferulic acid was the only substrate
capable to be transformed into 4-vinyl guaiacol by this strain of S. setonii. |
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