title: Activity of xylose reductase from Candida mogii grown in media containing different concentrations of rice straw hydrolysate.
abstract: Xylose reductase (XR) activity was evaluated in extracts of Candida mogii grown in media containing different concentrations of rice straw hydrolysate. Results of XR activity were compared to xylitol production and a similar behavior was observed for these parameters. Highest values of specific production and productivity were found for xylose reductase (35 U/g of cell and 0.97 U/[g of cell x h], respectively) and for xylitol (5.63 g/g of cell and 0.13 g/[g of cell x h]) in fermentation conducted in medium containing 49.2 g of xylose/L. The maximum value of XR:XD ratio (1.82) was also calculated under this initial xylose concentration with 60 h of fermentation.
authors.affiliation: Faculty of Chemical Engineering, State University of Campinas, SP, Brazil.
authors.forename: Z D
authors.initials: ZD
authors.lastname: Mayerhoff
authors.forename: I C
authors.initials: IC
authors.lastname: Roberto
authors.forename: T T
authors.initials: TT
authors.lastname: Franco
mesh_terms: D000449:Aldehyde Reductase / Q000096:biosynthesis / Q000302:isolation & purification / Q000378:metabolism*; D002175:Candida / Q000201:enzymology* / Q000254:growth & development; D003470:Culture Media; D005285:Fermentation; D005511:Food Handling; D006868:Hydrolysis; D007220:Industrial Waste; D007700:Kinetics; D012275:Oryza; D014993:Xylitol / Q000096:biosynthesis
chemical_list: D003470:Culture Media; D007220:Industrial Waste; D000449:Aldehyde Reductase; D014993:Xylitol