期刊
JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC
卷 44, 期 2, 页码 48-52出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcatb.2006.09.001
关键词
biotransformation; ferulic acid; vinyl guaiacol; Debaryomyces; 3-methoxy 4-hydroxystyrene
Debaryomyces hansenii, an isolated yeast strain metabolized ferulic acid to an intermediate compound, namely 4-vinyl guaiacol, by the non oxidative decarboxylation of its side chain. This bioconversion is a highly value added process as 4-vinyl guaiacol is nearly 40 times costlier than ferulic acid. The major degradation products were isolated and identified by thin layer chromatography, high performance liquid chromatography and H-1 and C-13 nuclear magnetic resonance (NMR) spectroscopy. Debaryomyces produced 1470 mg l(-1) of vinyl guaiacol at the tenth hour itself, corresponding to a molar yield of 95% while the production of vanillin reached a maximum of 169 mg l(-1) at the fifth hour. (c) 2006 Elsevier B.V. All rights reserved.
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