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Ma M, Chen X, Yue Y, Wang J, He D, Liu R. Immobilization and property of penicillin G acylase on amino functionalized magnetic Ni0.3Mg0.4Zn0.3Fe2O4 nanoparticles prepared via the rapid combustion process. Front Bioeng Biotechnol 2023; 11:1108820. [PMID: 36994365 PMCID: PMC10040772 DOI: 10.3389/fbioe.2023.1108820] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 02/23/2023] [Indexed: 03/16/2023] Open
Abstract
Penicillin G acylase plays an important role in the biocatalytic process of semi-synthetic penicillin. In order to overcome the disadvantages of free enzymes and improve the catalytic performance of enzymes, it is a new method to immobilize enzymes on carrier materials. And magnetic materials have the characteristics of easy separation. In the present study, the Magnetic Ni0.3Mg0.4Zn0.3Fe2O4 nanoparticles were successfully prepared by a rapid-combustion method and calcined at 400°C for 2 h. The surface of the nanoparticles was modified with sodium silicate hydrate, and the PGA was covalently bound to the carrier particles through the cross-linking of glutaraldehyde. The results showed that the activity of immobilized PGA reached 7121.00 U/g. The optimum pH for immobilized PGA was 8 and the optimum temperature was 45°C, the immobilized PGA exhibited higher stability against changes in pH and temperature. The Michaelis–Menten constant (Km) values of the free and immobilized PGA were 0.00387 and 0.0101 mol/L and the maximum rate (Vmax) values were 0.387 and 0.129 μmol/min. Besides, the immobilized PGA revealed excellent cycling performance. The immobilization strategy presented PGA had the advantages of reuse, good stability, cost saving and had considerable practical significance for the commercial application of PGA.
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Affiliation(s)
- Mingyi Ma
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Xiu Chen
- The People’s Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Zhenjiang, China
| | - Yao Yue
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Jie Wang
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Dawei He
- Affiliated Kunshan Hospital, Jiangsu University, Suzhou, China
- *Correspondence: Ruijiang Liu, ; Dawei He,
| | - Ruijiang Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
- *Correspondence: Ruijiang Liu, ; Dawei He,
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Optimization of Biocatalytic Steps via Response Surface Methodology to Produce Immobilized Peroxidase on Chitosan-Decorated AZT Composites for Enhanced Reusability and Storage Stability. Catal Letters 2022. [DOI: 10.1007/s10562-022-04185-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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