Fermented cassava residue lignin prepared by sequential acid steam-explosion and hot-alkaline treatment and its antioxidant properties

Authors
Wang, Wenya
Wang, Shizhuo
Pan, Yuqing
Ouyang, Xianhong
Linhardt, Robert J.
ORCID
https://orcid.org/0000-0003-2219-5833
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Other Contributors
Issue Date
2020-11-01
Keywords
Biology , Chemistry and chemical biology , Chemical and biological engineering , Biomedical engineering
Degree
Terms of Use
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Full Citation
Fermented cassava residue lignin prepared by sequential acid steam-explosion and hot-alkaline treatment and its antioxidant properties, W. Wang, S. Wanga, Y. Pana, X. Ouyang, R. J. Linhardt, Waste and Biomass Valorization, 11, 6115–6124, 2020.
Abstract
Fermented cassava residue (FCR) is a solid waste generated in cassava-based ethanol production that constitutes a major environmental challenge and wastes a natural resource. In the present study, a process involving sequential acid steam-explosion and hot-alkaline treatment was developed to prepare an antioxidant lignin in high yield and purity from FCR. Two-dimensional NMR analysis indicates that FCR lignin belongs to a guaiacyl/syringyl/hydroxyphenyl (G/S/H) class of lignin. ³¹P NMR analysis, after hydroxyl group phosphorylation, indicates that phenolic hydroxyl in FCR lignin attributable to mostly G-OH. One FCR lignin (No. 3) possessed the antioxidant activity similar to that of butylated hydroxytoluene. This FCR lignin may have potential applications as a food antioxidant or in other industrial processes as an antioxidant. The present study provided an efficient process of sequent acid steam-explosion and hot-alkaline treatment to improve the added value of fermented cassava residue (FCR).
Description
Waste and Biomass Valorization, 11, 6115–6124
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Department
The Linhardt Research Labs.
The Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies (CBIS)
Publisher
Relationships
The Linhardt Research Labs Online Collection
Rensselaer Polytechnic Institute, Troy, NY
Waste and Biomass Valorization
https://harc.rpi.edu/
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