Paper Type |
Contributed Paper |
Title |
Transformation of Lignin Model Compound and Lignin by Graphene Oxide Immobilized Laccase |
Author |
Xue-Fei Zhou* |
Email |
lgdx602@sina.com |
Abstract: In the present study, laccase (Lac) was immobilized into molecular sieves (Lac/NaY, Lac/ SSZ, Lac/MCM) and graphene oxide (Lac/GO). The activities of these laccase preparations were
comparatively studied on phenolic lignin model compound (vanillyl alcohol), nonphenolic lignin
model compound (veratryl alcohol) and organosolv lignin, in the presence of ABTS. GO immobilized
laccase (Lac/GO) afforded better performance in terms of conversion rate and reusability than the
molecular sieves during oxidation of vanillyl alcohol and veratryl alcohol. GPC and 31P-NMR were
used to characterize the structural modifications induced in the organosolv lignin. Compared to the
molecular sieves, the GO-immobilized laccase was found to be more reactive, displaying higher distinct
reaction selectivities in the oxidative pattern of the lignin. |
|
Start & End Page |
176 - 184 |
Received Date |
2020-07-19 |
Revised Date |
|
Accepted Date |
2020-10-04 |
Full Text |
Download |
Keyword |
laccase, lignin model compound, immobilization, oxidation, lignin |
Volume |
Vol.48 No.1 (January 2021) |
DOI |
|
Citation |
Zhou X., Transformation of Lignin Model Compound and Lignin by Graphene Oxide Immobilized Laccase, Chiang Mai J. Sci., 2021; 48(1): 176-184. |
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