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Zhang B, Zhou Y, Liu C, Abdelrahman Mohammed MA, Chen Z, Chen Z. Immobilized penicillin G acylase with enhanced activity and stability using glutaraldehyde-modified polydopamine-coated Fe 3 O 4 nanoparticles. Biotechnol Appl Biochem 2022; 69:629-641. [PMID: 33650711 DOI: 10.1002/bab.2138] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 02/24/2021] [Indexed: 01/01/2023]
Abstract
In this work, Fe3 O4 nanoparticles (NPs) were coated with polydopamine (PDA) to structure Fe3 O4 @PDA NPs by the spontaneous oxygen-mediated self-polymerization of dopamine (DA) in an aqueous solution of pH = 8.5. The fabricated Fe3 O4 @PDA NPs were grafted by glutaraldehyde to realize the immobilization of penicillin G acylase (PGA) under mild conditions. The carriers of each stage were characterized and investigated by transmission electron microscopy, X-ray diffraction, Fourier transform infrared, and vibrating sample magnetometry. To improve the catalytic activity and stability of immobilized PGA, the immobilization conditions were investigated and optimized. Under the optimal immobilization conditions, the enzyme loading capacity, enzyme activity, and enzyme activity recovery of immobilized PGA were 114 mg/g, 26,308 U/g, and 78.5%, respectively. In addition, the immobilized PGA presented better temperature and pH stability compared with free PGA. The reusability study ensured that the immobilized PGA showed an excellent repeating application performance. In particular, the recovery rate of immobilized PGA could reach 94.8% and immobilized PGA could retain 73.0% of its original activity after 12 cycles, indicating that the immobilized PGA exhibited a high operation stability and broad application potential in the biocatalysis field.
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Affiliation(s)
- Boyuan Zhang
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, China.,State Key Laboratory of Advanced Progressing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, China
| | - Yongshan Zhou
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, China.,State Key Laboratory of Advanced Progressing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, China
| | - Chunli Liu
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, China.,State Key Laboratory of Advanced Progressing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, China
| | - Monier Alhadi Abdelrahman Mohammed
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, China.,State Key Laboratory of Advanced Progressing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, China
| | - Zhangjun Chen
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, China.,State Key Laboratory of Advanced Progressing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, China
| | - Zhenbin Chen
- School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou, China.,State Key Laboratory of Advanced Progressing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou, China
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Weining W, Tang H, Chen Y, Liu J, Yu D, Yang F, Elfalleh W. Chemically modified magnetic immobilized phospholipase A 1 and its application for soybean oil degumming. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2022; 59:317-326. [PMID: 35068576 PMCID: PMC8758861 DOI: 10.1007/s13197-021-05017-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 01/11/2021] [Accepted: 01/31/2021] [Indexed: 01/03/2023]
Abstract
In this paper, the free Phospholipase A1 (PLA1) was immobilized on a magnetic carrier. The average particle diameter of the magnetic carrier was 97 ± 1.3 nm, and the average particle diameter of the magnetically immobilized PLA1 was 105 nm ± 1.3 nm. The enzyme activity was 1940.5 U/g. The magnetic enzyme was chemically modified with formaldehyde, dextran-aldehyde, and dextran-aldehyde-glycine. The proportions of primary amino groups in the modified magnetic immobilized enzyme PLA1 were 0, 53.5% and 47.3%, respectively. The optimum pH of the enzyme after chemical modification was 6.5. When the system temperature was 60 °C, the magnetically immobilized PLA1 modified with dextran-aldehyde-glycine had the optimal activity and stability. This chemically modified magnetic immobilized PLA1 was applied to soybean oil degumming at 60 °C, 6.5 h (reaction time), and 0.10 mg/kg (enzyme dosage). The phosphorus content in the degummed oil was 9.2 mg/kg. The relative enzyme activity was 77.6% after 7 reuses which would be potentially advantageous for industrial applications. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at (10.1007/s13197-021-05017-4).
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Affiliation(s)
- Wang Weining
- College of Food Science, Northeast Agricultural University, Harbin, 150030 China
| | - Honglin Tang
- College of Food Science, Northeast Agricultural University, Harbin, 150030 China
| | - Yan Chen
- College of Food Science, Northeast Agricultural University, Harbin, 150030 China
| | - Jingyang Liu
- College of Food Science, Northeast Agricultural University, Harbin, 150030 China
| | - Dianyu Yu
- College of Food Science, Northeast Agricultural University, Harbin, 150030 China
| | - Fuming Yang
- College of Food Science, Northeast Agricultural University, Harbin, 150030 China
| | - Walid Elfalleh
- Laboratoire Energie, Eau, Environnement Et Procèdes, (LEEEP) LR18ES35, Ecole Nationale D’Ingénieurs de Gabès, Université de Gabès, 6072 Gabès, Tunisia
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Gu Y, Xue P. Pseudomonas
sp. Lipase Immobilized on Magnetic Porous Polymer Microspheres as an Effective and Recyclable Biocatalyst for Resolution of Allylic Alcohols. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201700424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yaohua Gu
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry & Chemical Engineering; Ningxia University; Yinchuan 750021 China
| | - Ping Xue
- State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry & Chemical Engineering; Ningxia University; Yinchuan 750021 China
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Zhang X, Hao L, Sun H, Chen X, Jiang W, Wu J, Xu M, Pan Q. Preparation of Epoxy-Functionalized Magnetic Polymer Nanospheres for Magnetically Targeted Radiotherapy. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.996936] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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