Parametric optimization of xylitol production from xylose by fermentation

Abstract

ABSTRACTEnvironmental parameters play a major role on the optimum production of bio‐chemicals by bio‐chemical pathways of a micro‐organism. The effect of different environmental parameters like initial pH, temperature and initial xylose concentration were found for xylitol production using the micro‐organism candida parapsilosis NCIM‐3323, that belongs to the genus candida and species yeast. Maximum values of xylitol concentration, xylitol yield, xylitol volumetric productivity, xylitol specific productivity were found to be 28.14 g/l, 0.469 g/g xylose, 0.7 g/l‐h, 0.0116 g/g‐h at an initial pH of 3.5, temperature of 30 °C and initial xylose concentration of 60 g/l respectively. Optimum initial pH, temperature and initial xylose concentration for highest xylitol productivity were found to be 3.5, 30 °C, 60 g/l respectively. © 2012 Curtin University of Technology and John Wiley & Sons, Ltd.