Synergistic effect of acidity balance and hydrothermal pretreatment severity on alkali extraction of hemicelluloses from corn stalk

The current hemicelluloses extraction methods have problems such as low extraction ratio and quality. In the previous study, a new pH pre-corrected hydrothermal pretreatment has been proved effective in improving enzymatic hydrolysis of cellulose while retaining higher hemicelluloses without degrada...

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Bibliographic Details
Published in:Biomass conversion and biorefinery 2022-02, Vol.12 (2), p.459-468
Main Authors: Wang, Wei, Wu, Haijun, Shakeel, Usama, Wang, Chao, Yan, Tingxuan, Xu, Xia, Xu, Jian
Format: Article
Language:English
Subjects:
Biotechnology
Energy
Original Article
Renewable and Green Energy
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Summary:The current hemicelluloses extraction methods have problems such as low extraction ratio and quality. In the previous study, a new pH pre-corrected hydrothermal pretreatment has been proved effective in improving enzymatic hydrolysis of cellulose while retaining higher hemicelluloses without degradation. In this investigation, the synergistic effect of alkali loading and hydrothermal pretreatment severity on hemicelluloses preservation was studied. After pretreatment, the hemicelluloses were extracted with alkali. The results show that hemicelluloses extracted with 10% (w/v) NaOH after pH pre-corrected hydrothermal pretreatment at the severity of 2.0 contained no cellulose. At this condition, the ratios of hemicelluloses dissolution and recovery were the highest. The extracted hemicelluloses had the lowest color value, branch degree, and polydispersity.
ISSN:2190-6815
2190-6823
DOI:10.1007/s13399-020-01196-w