Oxidation of heterocyclic and aromatic aldehydes to the corresponding carboxylic acids by Acetobacter and Serratia strains

Conversion of heterocyclic and aromatic aldehydes to the corresponding carboxylic acids was carried out using Acetobacter rancens IFO3297, A. pasteurianus IFO13753 and Serratia liquefaciens LF14. IFO3297 produced 110g 2-furoic acid l-1 from furfural with a 95% molar yield. 5-Hydroxymethyl-2-furancarboxylic acid was produced from the corresponding aldehyde by using whole cells LF14. IFO13753 and LF14 both converted isophthalaldehyde, 2,5-furandicarbaldehyde, 2,5-thiophenedicarbaldehyde and 2,2’ biphenyldicarbaldehyde to the corresponding formylcarboxylic acid with 86--91% molar yields.