TY - GEN
T1 - Effects of surfactants on ethanol production from rice straw by simultaneous saccharification and fermentation
AU - Liu, Jia
AU - Shi, Jingang
AU - Li, Jian
AU - Yuan, Xingzhong
AU - Liu, Chunjing
PY - 2011
Y1 - 2011
N2 - The effects of biosurfactant rhamnolipid and chemical surfactant Tween 80 on ethanol production from waste rice straw by simultaneous saccharification and fermentation (SSF) were investigated. The results showed that ethanol yield was increased to different extents by the two surfactants at the optimal condition. The maximum enhancements were obtained at the reaction time of 72 hours, at which time ethanol yields were 84.8% and 91.7% with presence of 1CMC (Critical Micelle Concentration) of rhamnolipid and Tween 80, and the ethanol yields were 12.2% and 21.3% higher than the control, respectively. The experiment proved that rhamnolipid and Tween 80 could improve the complex system of SSF. Ethanol concentration was also increased remarkably with two surfactants. The stimulatory effects on ethanol yield of Tween 80 were superior to that of rhamnolipid. Tween 80 did not inhibit cell growth in fermentation processes and probably improved the utilization of reducing sugar by yeast. For its complexity of reactive system, many influencing factors, more research is needed to investigate effects of surfactants on yeast.
AB - The effects of biosurfactant rhamnolipid and chemical surfactant Tween 80 on ethanol production from waste rice straw by simultaneous saccharification and fermentation (SSF) were investigated. The results showed that ethanol yield was increased to different extents by the two surfactants at the optimal condition. The maximum enhancements were obtained at the reaction time of 72 hours, at which time ethanol yields were 84.8% and 91.7% with presence of 1CMC (Critical Micelle Concentration) of rhamnolipid and Tween 80, and the ethanol yields were 12.2% and 21.3% higher than the control, respectively. The experiment proved that rhamnolipid and Tween 80 could improve the complex system of SSF. Ethanol concentration was also increased remarkably with two surfactants. The stimulatory effects on ethanol yield of Tween 80 were superior to that of rhamnolipid. Tween 80 did not inhibit cell growth in fermentation processes and probably improved the utilization of reducing sugar by yeast. For its complexity of reactive system, many influencing factors, more research is needed to investigate effects of surfactants on yeast.
KW - Ethanol
KW - Rhamnolipid
KW - Simultaneous saccharification and fermentation
KW - Tween 80
UR - http://www.scopus.com/inward/record.url?scp=81455135088&partnerID=8YFLogxK
U2 - 10.1109/ICECC.2011.6068019
DO - 10.1109/ICECC.2011.6068019
M3 - Conference contribution
AN - SCOPUS:81455135088
SN - 9781457703218
T3 - 2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings
SP - 3707
EP - 3710
BT - 2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings
T2 - 2011 International Conference on Electronics, Communications and Control, ICECC 2011
Y2 - 9 September 2011 through 11 September 2011
ER -