EFFECTS OF DIFFERENT SUBSTRATES ON XYLITOL PRODUCTION BY CANDIDA PARAPSILOPSIS AND CANDIDA TROPICALIST. THINESH, R. KIRUTHEESWARI AND T. SIVARAMA KRISHNANAbstract Xylitol production of Candida tropicalis and C. parapsilopsis in different substrates (Rice straw and Eichhornia) with different concentration (30, 50 and 70) were analyzed. Rice straw hydrolysate and Eichhornia hydrolysate has been assayed for xylitol production. Our results revealed that Candida tropicalis and Candida parapsilopsis both strains has Xylitol accumulating ability. 78.1% and 58.1% of xylitol was produced from the production media p1 containing 10% Xylose by C. tropicalis and C. parapsilopsis respectively. 55.9% and 41.8 of Xylitol was produced from the production medium p11 containing 70% straw hydrolysate C. tropicalis and C. parapsilopsis respectively. 55.9% and 85.3% of xylitol was produced from the production medium p111 containing 70% hydrolysate by Candida tropicalis and Candida parapsilopsis respectively. The result shows that Candida tropicalis was the better Xylitol producer compared to Candida sp. Eichhornia hydrolysate is the better substrate for Xylitol production than other substrates.
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