Xylo-oligosaccharides and ethanol production from bamboo processing residues

doi:10.3969/j.issn.1000-2006.2015.05.024

LI Han, LI Xin,XU Yong, CHEN Mu, YU Shiyuan, YONG Qiang

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (05) : 145-149.

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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2015, Vol. 39 ›› Issue (05) : 145-149. DOI: 10.3969/j.issn.1000-2006.2015.05.024

Xylo-oligosaccharides and ethanol production from bamboo processing residues

LI Han, LI Xin,XU Yong, CHEN Mu, YU Shiyuan, YONG Qiang^*

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Abstract

Xylo-oligosaccharides and ethanol preparation from bamboo processing residues were investigated. The bamboo xylan was selectively degraded by endo-xylanase to produce xylo-oligosaccharides. Xylan extraction residue was used for ethanol production through saccharification and fermentation processes. The xylan of bamboo processing residues was extracted with 7% NaOH solution for 1 h, the xylan extraction yield was 57.81%. The xylan was hydrolyzed by endo-xylanase with the dosage of 25 U/g xylan for 12 h, the xylo-oligosaccharides yield was 39.49%, and the xylo-oligosaccharides have good effect on the proliferation of Bifidobacterium adolescentis. The xylan extraction residue was hydrolyzed by cellulase and β-glucosidase with the dosage of 25 U/g and 4 U/g for 72 h, 64.05% hydrolysis yield was obtained. The hydrolyzate containing 121.20 g/L glucose was fermented by Saccharomyces cerevisiae NLH13 for 40 h, the glucose consumption and ethanol yield were 98.80% and 92.95%, respectively.

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LI Han, LI Xin,XU Yong, CHEN Mu, YU Shiyuan, YONG Qiang. Xylo-oligosaccharides and ethanol production from bamboo processing residues[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2015, 39(05): 145-149 https://doi.org/10.3969/j.issn.1000-2006.2015.05.024

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