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測量應用案例-20201204
閱讀：144 發(fā)布時間：2020-12-9
文獻名： The Immobilization of Candida antarctica lipase B by ZIF-8 encapsulation and macroporous resin adsorption: preparation and characterizations
作者： ? Xinyong Cai, ? Mengjie Zhang, ? Wei Wei, ? Yinjun Zhang, ? Zhao Wang & ? Jianyong Zheng
Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, People’s Republic of China
摘要：A novel enzyme immobilization method employing metal–organic framework (MOF) encapsulation and macroporous resin adsorption was developed in this study. Candida antarctica lipase B (CALB) was firstly encapsulated onto metal–organic frame structures (Zeolitic imidazole framework-8, ZIF-8) and further bonded to macroporous resin by physical adsorption. Under optimized immobilization conditions, the activity of the prepared immobilized lipase (CALB-ZIF-8@D101) determined via the methyl esterification of oleic acid was 38.4 U/mg. Compared with free lipase, the immobilized lipase exhibited improved thermal and operational stability and organic solvent tolerance. These results demonstrate that the immobilization method of ZIF-8 encapsulation and macroporous resin adsorption enhanced enzyme properties at a superior level.