Transformation of Lignin Model Compound and Lignin by Graphene Oxide Immobilized Laccase

被引：0
|
作者：
Zhou, Xue-Fei [1 ,2 ,3 ,4 ]
机构：
[1] Jishou Univ, Key Lab Hunan Forest Prod & Chem Ind Engn, Jieshou 427000, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Chem Engn, Kunming 650500, Yunnan, Peoples R China
[3] Qilu Univ Technol, Key Lab Pulp & Paper Sci & Technol, Minist Educ Shandong Prov, Jinan 250353, Peoples R China
[4] Tsinghua Univ, Key Lab Solid Waste Management & Environm Safety, Minist Educ China, Beijing 100084, Peoples R China
来源：
CHIANG MAI JOURNAL OF SCIENCE | 2021年 / 48卷 / 01期
基金：
中国国家自然科学基金;
关键词：
laccase; lignin model compound; immobilization; oxidation; lignin; OXIDATION; NANOPARTICLES; SILICA; ENZYME; DELIGNIFICATION; SYSTEM;
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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 organosolvlignin, 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 P-31-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.
引用
收藏
页码：176 / 184
页数：9
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