FERMENTATION FOR PRODUCTION OF XYLITOL USING CANDIDA TROPICALIS

摘要

PROBLEM TO BE SOLVED: To produce xylitol in high productivity and yield by fermenting new Candida tropicalis strain at respectively specific pH, temperature and dissolved oxygen concentration in a medium having a specific composition to give maximum productivity of xylitol.;SOLUTION: Xylitol is produced at maximized productivity by using a new Candida tropicalis strain deposited under KCCM-10122 at the Korean Microorganism Culture Center as the fermentation microorganism, fermenting a xylose culture medium having a composition to give maximum productivity of xylitol, i.e., 5-20 w/v% xylose, 0.2-1.0 w/v% glucose, 0.2-2.0 w/v% yeast extract, 0.2-2.0 w/v% ammonium sulfate, 0.2-2.0 w/v% KH2PO4 and 0.01-0.2 w/v% MgSO4.7H2O at pH 4.5-5.5 and 27-33°C at a air saturation ratio of 0.1-5.0% in terms of dissolved oxygen concentration in the medium while controlling the reduction- oxidation potential in the culture base to -50 to -150 mV, removing cells and other residues from the fermentation product and recovering the objective product from the culture base.;COPYRIGHT: (C)2000,JPO