تفاعل #2045071
ord-91997ccca9a2419dbac14d6c5fc718dd
معادلة التفاعل
المذيبات
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الإجراء التجريبي
Accordingly, in order to solve the problems as described above, the present invention provides a method for producing xylitol by fermentation of lignocellulosic hydrolysates without detoxification. A xylitol fermentation yeast strain is isolated and screened from the fermentation broth of a 100 liter pentose fermenter in the mini-pilot plant of the Institute of Nuclear Energy Research for cellulosic ethanol research and development, and then molecular analysis of the 18S rDNA sequence has identified the strain as a yeast strain of Candida sp. belonging to Candida genus. The strain is used to ferment the synthetic xylose solution to produce xylitol, and the maximum yield can be approximately to 0.8 g/g, which is higher than those of xylitol production strains also belonging to Candida genus, such as Candida boidinii, Candida guilliermondii, Candida utilis, and Candida maltosa (mostly with a xylitol yield of below 0.7 g/g). Meanwhile, the xylitol yield of this newly isolated strain also reaches a leading level, compared with other xylitol-producing stains belonging to different yeast genus.