- Turkish Journal of Engineering and Environmental Sciences
- Vol: 23 Issue: 6
- Fermentative Performance of Candida tropicalis Kuen 1022 Yeast For D-Xylose and Sunflower Seed Hull ...
Fermentative Performance of Candida tropicalis Kuen 1022 Yeast For D-Xylose and Sunflower Seed Hull Hydrolysate in Xylitol Production
Authors : N. Eken SARAÇOĞLU, H. ÇAVUŞOĞLU
Pages : 433-438
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Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :The fermentative ability of Candida tropicalis Kuen 1022 yeast to produce xylitol from D-xylose and sunflower seed hull hydrolyste was examined under aerobic conditions. In batch cultures having a synthetic xylose concentrations ranging from 50 gl-1 to 100 gl-1,the maximum xylitol yield achieved was 0.26 g/g xylose consumed with a volumetric rate of xylitol production of 0.196 gl-1h-1 when the initial synthetic sugar concentration was 50 gl-1. The pretreated sunflower seed hull hydrolysate was cultivated with the previously hydrolysate medium adapted yeast cells. The maximum xylitol concentration was 4.72 gl-1, the fermentation time was 96 h, xylitol yield was 0.113 g/g xylose consumed and volumetric productivity was 0.219 gl-1h-1 for hydrolysate having an initial composition of xylose 66 gl-1 and glucose 0.8 gl-1Keywords : Xylitol, D-xylose, Sunflower seed hull, Candida tropicalis