TY - JOUR
T1 - Combined biomimetic and inorganic acids hydrolysis of hemicellulose in Miscanthus for bioethanol production
AU - Guo, Bin
AU - Zhang, Yuanhui
AU - Ha, Suk Jin
AU - Jin, Yong Su
AU - Morgenroth, Eberhard
N1 - Funding Information:
This work was partially financed by Illinois Council on Food and Agricultural Research (C-FAR) under Sentinel Program. We are grateful for the courtesy of Department of Crop Science for providing Miscanthus samples. We would like to acknowledge Dr. Alexander Ulanov from Metabolomics Center in University of Illinois at Urbana-Champaign for phenolic compounds analysis. We also thank Dr. Won-Heong Lee in Dr. Yong-Su Jin’s research group for fermentability tests of engineered S. cerevisiae on TFA/MA. Suk-Jin Ha and Yong-Su Jin are affiliated with the Energy Biosciences Institute.
PY - 2012/4
Y1 - 2012/4
N2 - Combined acid catalysis was employed as a pretreatment alternative with combined acid catalysts blending sulfuric acid with two biomimetic acids, trifluoroacetic acid (TFA) and maleic acid (MA), respectively. The influences of acid blending ratio, temperature, and acid dosage on pretreatment performance were investigated. A synergistic effect on hemicellulose decomposition was observed in the combined acid hydrolysis, which greatly increased xylose yield, although TFA/MA would induce more total phenols. Besides, combined TFA pretreatment could efficiently prevent xylose degradation. Fermentation tests of the acid-catalyzed hydrolysates with overliming showed that compared to H 2SO 4 pretreatment, TFA and MA pretreatments improved overall ethanol yield with an increase by 27-54%. Combined acid catalysis was shown as a feasible pretreatment method for its improved sugar yield, reduced phenols production and catalyst costs.
AB - Combined acid catalysis was employed as a pretreatment alternative with combined acid catalysts blending sulfuric acid with two biomimetic acids, trifluoroacetic acid (TFA) and maleic acid (MA), respectively. The influences of acid blending ratio, temperature, and acid dosage on pretreatment performance were investigated. A synergistic effect on hemicellulose decomposition was observed in the combined acid hydrolysis, which greatly increased xylose yield, although TFA/MA would induce more total phenols. Besides, combined TFA pretreatment could efficiently prevent xylose degradation. Fermentation tests of the acid-catalyzed hydrolysates with overliming showed that compared to H 2SO 4 pretreatment, TFA and MA pretreatments improved overall ethanol yield with an increase by 27-54%. Combined acid catalysis was shown as a feasible pretreatment method for its improved sugar yield, reduced phenols production and catalyst costs.
KW - Biomimetic approach
KW - Combined acid hydrolysis
KW - Hemicellulose decomposition
KW - Miscanthus
KW - Xylose degradation
UR - http://www.scopus.com/inward/record.url?scp=84858284899&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84858284899&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2012.01.133
DO - 10.1016/j.biortech.2012.01.133
M3 - Article
C2 - 22366607
AN - SCOPUS:84858284899
SN - 0960-8524
VL - 110
SP - 278
EP - 287
JO - Bioresource Technology
JF - Bioresource Technology
ER -