A new magnesium bisulfite pretreatment (MBSP) development for bio-ethanol production from corn stover

Bioresource Technology
Heng YuJia Ouyang

Abstract

This study established a new more neutral magnesium bisulfate pretreatment (MBSP) using magnesium bisulfate as sulfonating agent for improving the enzymatic hydrolysis efficiency of corn stover. Using the MBSP with 5.21% magnesium bisulfate, 170°C and pH 5.2 for 60min, about 90% of lignin and 80% of hemicellulose were removed from biomass and more than 90% cellulose conversion of substrate was achieved after 48h hydrolysis. About 6.19kg raw corn stover could produce 1kg ethanol by Saccharomyces cerevisiae. Meanwhile, MBSP also could protect sugars from excessive degradation, prevent fermentation inhibition formation and directly convert the hemicelluloses into xylooligosaccharides as higher-value products. These results suggested that the MBSP method offers an alternative approach to the efficient conversion of nonwoody lignocellulosic biomass to ethanol and had broad space for development.

References

Sep 11, 2008·Biotechnology and Bioengineering·Bryon S DonohoeTodd B Vinzant
Jan 5, 2010·Bioresource Technology·Ana M R B XavierDmitry V Evtuguin
Aug 17, 2010·Bioresource Technology·Qing QingCharles E Wyman
Oct 11, 2011·Bioresource Technology·Carolina BellidoMaría Teresa García-Cubero
Jan 30, 2013·Biotechnology for Biofuels·Leif J JönssonNils-Olof Nilvebrant
Nov 5, 2013·Bioresource Technology·Carlos Alvarez-Vasco, Xiao Zhang

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Citations

Jan 15, 2019·Journal of Agricultural and Food Chemistry·Zhaojuan ZhengJia Ouyang

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