Comparison of laccase-catalyzed cross-linking of organosolv lignin and lignosulfonates

The impact of lignin sulfonation on its reactivity with laccase and laccase/HBT

“…Remarkably, when lignosulfonate is used as a substrate, both laccase and LMS incubations are shown to induce polymerization. 4,6,22,23,34 To date, there was no mechanistic explanation for this observation, since the effects of laccase and LMS have only been investigated on polymeric lignosulfonate. These studies reported changes in molecular weight or overall changes in chemical structure, but did not describe detailed reaction pathways.…”

Acidic Versus Alkaline Bacterial Degradation of Lignin Through Engineered Strain E. coli BL21(Lacc): Exploring the Differences in Chemical Structure, Morphology, and Degradation Products

“…In contrast, at 1,602 cm −1 , all the samples displayed aromatic skeletal vibrations in the C -O bonds. This could be related to ether bonds, where the alkaline samples and the acidic control showed higher intensities, evidence of the preservation of ether linkages among aromatic structures (Faix, 1991;Sun et al, 2003;Gillgren et al, 2017). At 1,513 cm −1 all the samples had a peak, corresponding to aromatic skeletal vibrations, G > S (Faix, 1991;Gordobil et al, 2016;Yu et al, 2019).…”

Synthesis of Vinyl Polymers via Enzymatic Oxidative Polymerisation

“…Also lignin represents an attractive target to graft polymers onto. Interestingly, this appears to be a laccase domain [61][62][63][64][65][66][67].…”