Bioconversion of D-xylose to D-xylonic acid by Pseudoduganella danionis

Sugar acids are organic acids formed by the oxidation of carbonyl or hydroxyl group of monosaccharides to carboxylic acid group. D-xylonic acid derived via bioconversion of D-xylose is a promising platform chemical with various applications in food, chemical, agriculture, and pharmaceutical industries. The efficacy of a newly isolated culture identified as Pseudoduganella danionis to produce D-xylonic acid from D-xylose was investigated. The culture appeared to be potent for a feasible bioprocess development for xylonic acid production. Production medium containing 10 g/L D-xylose resulted in 6.5 g/L D-xylonic acid production after 120 h of incubation with 1% (v/v) inoculum of P. Danionis.