Method for producing xylitol from lignocellulosic hydrolysates without detoxification
AssigneeInstitute of Nuclear Energy Research Atomic Energy Council, Executive Yuan
InventorsChiung-Fang Huang, Yi-Feng Jiang, Ting-Hsiang Lin, Gia-Luen Guo, Wen-Song Hwang, Jia-Baau Wang
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Abstract
A method for producing xylitol by fermentation of lignocellulosic hydrolysates without detoxification is provided. By using the originally isolated yeast Candida sp., xylose can be effectively converted into xylitol. The invention also provides the Candida strain having high furfural tolerance, and is capable to produce xylitol from various types of non-detoxified lignocellulosic hydrolysates, in which the overall utilization of xylose in hydrolysate can reach over 95%.
Claims3
A method for producing xylitol by fermentation of non-detoxified lignocellulosic hydrolysates, comprising:
- conducting a pretreatment process to obtain the non-detoxified lignocellulosic hydrolysates by using a twin-screw extruder to mix acids and xylose;
- adding an alkali agent into the non-detoxified lignocellulosic hydrolysates to adjust pH value between 4.5 and 7.0;
- and
- converting the xylose contained in the non-detoxified lignocellulosic hydrolysates into xylitol through a fermentation by using a yeast strain belonging to the Candida as a xylose fermentation strain.
Dependencies are inferred from the claim text.