Abstract
Gleditsia saponin (GS) assisted high-solids enzymatic hydrolysis and fermentation for alkaline peroxide (AP)-pretreated furfural residues (FRs) was investigated. The addition of GS increased the glucose yield of untreated FRs to 74.8% in high-solids-loading enzymatic hydrolysis. AP pretreatment before enzymatic hydrolysis resulted in a high sugar concentration (115.4g/L) and a glucose yield of 57.5% by the end of hydrolysis at 20% solids loading. It was suggested that GS could improve significantly the glucose yields of FRs with high lignin content. After simultaneous saccharification and fermentation (SSF), the total cellulose conversion of FRs with 14.3% lignin content reached 82.2% and the highest ethanol concentration (69.1g/L) was achieved, which was 121% higher than that of untreated FRs (30.1g/L). The results indicated that the main reason behind the decreased glucose yield at high-solids loadings was product inhibition. Moreover, the lignin content plays an important role in the enhancement of GS-assisted high-solids enzymatic hydrolysis of AP-treated FRs.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
