Acetic acid-assisted hydrothermal fractionation of empty fruit bunches for high hemicellulosic sugar recovery with low byproducts

作者：Kim Dong Young; Um Byung Hwan; Oh Kyeong Keun^*

来源：Applied Biochemistry and Biotechnology, 2015, 176(5): 1445-1458.

DOI：10.1007/s12010-015-1656-5

• Hemicellulosic sugar
• Acetic acid
• Fractionation
• RSM
• EFBs

Xylose, mannose, and galactose (xmg) recovery from empty fruit bunches using acetic acid-assisted hydrothermal (AAH) fractionation method was investigated. Acetic acid has been demonstrated to be effective in xmg recovery in comparison with the liquid hot-water (LHW) fractionation. The maximum xmg recovery yield (50.7 %) from the empty fruit bunch (EFB) was obtained using AAH fractionation at optimum conditions (6.9 wt.% acetic acid at 170 A degrees C and for 18 min); whereas, only 16.2 % of xmg recovery was obtained from the LHW fractionation at the same reaction conditions (170 A degrees C and 18 min). Releasing out the glucose from EFB was kept at low level (< 1.0 %) through all tested conditions and consequently negligible 5-HMF and formic acid were analyzed in the hydrolyzate. The production of furfural was also resulted with extremely low level (1.0 g/L).

• 出版日期2015-7