Study on the removal of lignin from pre-hydrolysis liquor by laccase-induced polymerization and the conversion of xylose to furfural

Abstract

Eucalyptus dissolving kraft pulp pre-hydrolysis Liquor (PHL) is rich in sugar and other biomass resources, which can produce furfural and may serve as a platform molecule for sustainable fuel production....

Exploration of Converting Food Waste into Value-Added Products via Insect Pretreatment-Assisted Hydrothermal Catalysis

“…From Figure c, it can be seen that the apparent color of the final liquid was dark brownish yellow either in pure HAP catalysis or Ce-HAP catalysis; however, the liquid after Ce-HAP catalysis showed a lighter color. This result confirms that there were more side reactions involving the production of humic substances during HAP catalysis . In addition, the three-dimensional excitation-emission matrix (3D EEM) fluorescence spectra of the obtained liquids (Figure d) indicated a main absorption at emission >380 nm/excitation >250 nm contributed by heterocyclic oxygen and aldehyde groups, possibly bearing the formation of furfurals.…”

“…This result confirms that there were more side reactions involving the production of humic substances during HAP catalysis. 47 In addition, the three-dimensional excitationemission matrix (3D EEM) fluorescence spectra of the obtained liquids (Figure 8d) indicated a main absorption at emission >380 nm/excitation >250 nm contributed by heterocyclic oxygen and aldehyde groups, 48 possibly bearing the formation of furfurals.…”

Lignin precursors enhance exolaccase-started humification of bisphenol A to form functional polymers

“…Because exolaccase-induced BPA removal was completely limited in the absence of O 2 . Subsequently, these radical intermediates were stochastically coupled to produce the polymeric products [ 46 ]. Such a process involved two aspects: one was self-polymerization and the other was co-polymerization [ 47 ].…”

Research Progress on Lignocellulosic Biomass Degradation Catalyzed by Enzymatic Nanomaterials

“…The cleavage of β ‐O‐4 and 5‐5), (h) hydroxyl oxidation on lignin side chain C‐α to form a carbonyl group, and (i) aliphatic carbon‐carbon bond and lignin side chain cleavage. Liu et al [61] . showed that the formation of 5‐5′ and 4‐O‐5′ bonds are the main reaction of laccase oxidation, and occasionally β ‐O‐4′ bonds are formed.…”