Parametric optimization of xylitol production from xylose by fermentation

Abstract

Environmental 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.