NMR Study on Laccase Polymerization of Kraft Lignin Using Different Enzymes Source.

ABSTRACT: The usage of laccases is a sustainable and environmentally friendly approach to modifying the Kraft lignin structure for use in certain applications. However, the inherent structure of Kraft lignin, as well as that resulting from laccase modification, still presents challenges for fundamental comprehension and successful lignin valorization. In this study, bacterial and fungal laccases were employed to modify eucalypt Kraft lignin. To evaluate the type and range of the chemical and structural changes of laccase-treated lignins, different NMR techniques, including solution ¹H and 2D NMR (heteronuclear single quantum correlation (HSQC)), and solid-state ¹³C NMR, were applied. Size exclusion chromatography and infrared spectroscopy were also used. Interestingly, HSQC ana

SUBMITTER: Ibarra D 

PROVIDER: S-EPMC9917248 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature