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Highly enhanced activity and stability via affinity induced immobilization β-glucosidase from Aspergillus niger onto amino-based silica for the biotransformation of ginsenoside Rb1. J Chromatogr A 2021; 1653:462388. [PMID: 34280789 DOI: 10.1016/j.chroma.2021.462388] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 01/15/2023]
Abstract
In this study, an enzyme immobilization method for the effective biotransformation of ginsenoside Rb1 to impart activity and stability was developed. Using a hydrolase enzyme model, β-glucosidase from Aspergillus niger, immobilization within chemically affinity-linked amino-based silica provided an immobilization efficiency 5.86-fold higher than that of free enzyme. Compared with the free enzyme, the immobilized enzyme functioned optimally at a wider pH range and had higher thermostability. The optimum pH for the free and immobilized enzymes was 5.5. The optimal reaction temperature of the immobilized enzyme was 45 °C, which was 5 °C higher than that of the free enzyme. The Michaelis constant (Km) values before and after immobilization were 0.482 mmol•L-1 and 0.387 mmol•L-1, respectively. The catalytic rate (Kcat) for the immobilized and free enzymes was 22.269 mmol•L-1and 8.800 mmol•L-1, respectively, and the catalytic efficiency (Kcat/Km) activity of the immobilized enzyme was 3.30-fold higher than that of the free enzyme. The immobilized enzyme could preserve 97 % of the activity after 45 cycles of repeated use. The high catalytic activity and significant operational stability are beneficial for industrial applications.
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Jaquish R, Reilly AK, Lawson BP, Golikova E, Sulman AM, Stein BD, Lakina NV, Tkachenko OP, Sulman EM, Matveeva VG, Bronstein LM. Immobilized glucose oxidase on magnetic silica and alumina: Beyond magnetic separation. Int J Biol Macromol 2018; 120:896-905. [PMID: 30171957 DOI: 10.1016/j.ijbiomac.2018.08.097] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 02/08/2023]
Abstract
Here we report immobilization of glucose oxidase (GOx) on magnetic silica (Fe3O4-SiO2) and alumina (Fe3O4-Al2O3) functionalized with amino groups using glutaraldehyde as a linker. Magnetic support based biocatalysts demonstrate high catalytic activity in d-glucose oxidation to D-gluconic acid at pH 5-7.5 and temperature of 30-50 °C with the best activities of 95% and 91% for magnetic silica and alumina, respectively. A comparison of magnetic and non-magnetic alumina and silica shows a significant enhancement of the relative catalytic activity for magnetic supports, while the silica based biocatalysts show a higher activity than the biocatalysts based on alumina. A noticeably higher activity of GOx immobilized on magnetic supports is explained by synergy of the GOx inherent activity and enzyme-like activity of iron oxide nanoparticles, while the enhancement with silica based catalysts is most likely due to a larger pore size and stronger Brønsted acid sites. Excellent relative activity of Fe3O4-SiO2-GOx (95% of native GOx) in a tolerant pH and temperature range as well as high stability in a repeated use (6% relative activity loss after five catalytic cycles) makes this catalyst promising for practical applications.
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Affiliation(s)
- Rigel Jaquish
- Indiana University, Department of Chemistry, 800 E. Kirkwood Av., Bloomington, IN 47405, USA
| | - Austin K Reilly
- Indiana University, Department of Chemistry, 800 E. Kirkwood Av., Bloomington, IN 47405, USA
| | - Bret P Lawson
- Indiana University, Department of Chemistry, 800 E. Kirkwood Av., Bloomington, IN 47405, USA
| | - Ekaterina Golikova
- Tver State Technical University, Department of Biotechnology and Chemistry, 22 A. Nikitina St, 170026, Tver, Russia
| | - Aleksandrina M Sulman
- Tver State Technical University, Department of Biotechnology and Chemistry, 22 A. Nikitina St, 170026, Tver, Russia
| | - Barry D Stein
- Indiana University, Department of Biology, 1001 E. Third St., Bloomington, IN 47405, USA
| | - Natalya V Lakina
- Tver State Technical University, Department of Biotechnology and Chemistry, 22 A. Nikitina St, 170026, Tver, Russia
| | - Olga P Tkachenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Pr., Moscow 119991, Russia
| | - Esther M Sulman
- Tver State Technical University, Department of Biotechnology and Chemistry, 22 A. Nikitina St, 170026, Tver, Russia
| | - Valentina G Matveeva
- Tver State Technical University, Department of Biotechnology and Chemistry, 22 A. Nikitina St, 170026, Tver, Russia; Tver State University, Regional Technological Center, Zhelyabova Str., 33, 170100 Tver, Russia.
| | - Lyudmila M Bronstein
- Indiana University, Department of Chemistry, 800 E. Kirkwood Av., Bloomington, IN 47405, USA; A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., Moscow 119991, Russia; King Abdulaziz University, Faculty of Science, Department of Physics, Jeddah 21589, Saudi Arabia.
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Yu J, Wang C, Wang A, Li N, Chen X, Pei X, Zhang P, Wu SG. Dual-cycle immobilization to reuse both enzyme and support by reblossoming enzyme–inorganic hybrid nanoflowers. RSC Adv 2018; 8:16088-16094. [PMID: 35542186 PMCID: PMC9080259 DOI: 10.1039/c8ra02051e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 04/23/2018] [Indexed: 11/21/2022] Open
Abstract
Both enzyme and support can be recycled using dual-cycle immobilization method by reblossoming the enzyme–inorganic hybrid nanoflowers.
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Affiliation(s)
- Jianyun Yu
- College of Materials
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Chenhui Wang
- College of Materials
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Anming Wang
- College of Materials
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Ningning Li
- College of Materials
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Xinxin Chen
- College of Materials
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Xiaolin Pei
- College of Materials
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Pengfei Zhang
- College of Materials
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Stephen Gang Wu
- Department of Energy
- Environmental and Chemical Engineering
- Washington University
- St. Louis
- USA
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