Method for increasing the concentration of xylose in...

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Continuous chemical treatment or continuous charging or...

Reexamination Certificate

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C162S181100, C162S043000, C162S017000, C162S020000

Reexamination Certificate

active

08080128

ABSTRACT:
Disclosed is a method for increasing the concentration of xylose in lignocellulosic hydrolysate. The method includes the step of extruding lignocellulosic material and mixing the lignocellulosic material with diluted acid and the step of conducting hot-water extraction on the mixture. Hence, the concentration of the xylose in the lignocellulosic hydrolysate can achieve a high concentration of 60 g/L, and the yield of the xylose can reach to 90%.

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patent: 6620292 (2003-09-01), Wingerson
patent: 2008/0029233 (2008-02-01), Wingerson et al.
Yat, S.C. et al., Kinetic characterization for dilute sulfuric acid hydrolysis of timber varieties and switchgrass, Bioresource Technology, vol. 99, Sep. 27, 2007, pp. 3855-3863.
Kadam, K.L. et al., Flexible biorefinery for biorefinery for producing fermentation sugars, lignin and pulp from corn stover, Journal of Industrial Microbiology and Biotechnology, vol. 35, Feb. 14, 2008, pp. 331-341.
Öhgren, K. et al., Fuel ethanol production from steam pretreated corn stover using SSF at higher dry matter content, Biomass & Bioenergy , vol. 30, Apr. 3, 2006, pp. 863-869, 2006.

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