Xylitol Production From Lees Hydrolysate By Candida Tropicalis

Xylitol is a polyol, with a sweetening power similar to sucrose and a calorie similar to glucose. It is used as a nutrition and a cure for diabetes patients because it can regulate abnormity of metabolism. It is also used for salvaging acetone-body patients because of its resisting acetone-body effect. It can slower the productivity of fatty acid in plasma, but can't result in the rise of bloodsugar. It is also used as a medicine for protecting liver. It has good heat-stability and never reacts with amino acids under heating, so it is confected all kinds of preparations for nutrition medicines together with amino acids. As a food, it can defend decayed tooth. Besides, it is applied abroadly in national defence, plastic and light industry.At present, xylitol is produced by chemical method in industry. But chemical method has high cost of production and serious pollution in environment. The production of xylitol by fermentation of hemicellulosic hydrolysates becomes a hotspot. The fermentation process of producing xylitol is better than conventional chemical process. In China, there' s a mass production of lees, the basis of which is paddy hall which has a 16%-22% content of xylose. At present, the lees is still not processed in an efficient way while there are a few of studies on the use of paddy hall to make xylitol. Candida tropicalis can directly ferment the simply detoxified lees...