1
|
Jadhao AR, Patel H, Kodam KM, Gupte A, Waghmode SB. Selective oxidation of benzylic alcohols by laccase from white-rot mushroom Tricholoma giganteum AGHP: Total synthesis of taccabulin A, taccabulin D and taccabulin E. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
2
|
Bayzidi M, Zeynizadeh B. A uniformly anchored zirconocene complex on magnetic reduced graphene oxide (rGO@Fe 3O 4/ZrCp 2Cl x (x = 0, 1, 2)) as a novel and reusable nanocatalyst for synthesis of N-arylacetamides and reductive-acetylation of nitroarenes. RSC Adv 2022; 12:15020-15037. [PMID: 35702429 PMCID: PMC9112892 DOI: 10.1039/d2ra02293a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/09/2022] [Indexed: 11/21/2022] Open
Abstract
In this study, a crafted zirconocene complex on rGO@Fe3O4 as a novel magnetic nanocatalyst was synthesized and then characterized using FT-IR, SEM, EDX, VSM, ICP-OES, TGA, BET and MS analyses. Next, catalytic activity of the prepared nanocomposite rGO@Fe3O4/ZrCp2Cl x (x = 0, 1, 2) towards successful reduction of aromatic nitro compounds to arylamines using N2H4·H2O (80%) was investigated. The examined nanocatalyst also showed perfect catalytic activity for reductive-acetylation of aromatic nitro compounds to the corresponding N-arylacetamides without isolation of the prepared in situ amines using the N2H4·H2O/Ac2O system. Furthermore, acetylation of the commercially available arylamines to the corresponding N-arylacetamides was carried out by acetic anhydride in the presence of the rGO@Fe3O4/ZrCp2Cl x (x = 0, 1, 2) nanocomposite. All reactions were carried out in refluxing EtOH as a green solvent to afford the products in high yields. The obtained results exhibited that the nanocomposite of rGO@Fe3O4/ZrCp2Cl x (x = 0, 1, 2) showed a great catalytic activity in comparison to rGO and rGO@Fe3O4 as the parent constituents. Recovery and reusability of rGO@Fe3O4/ZrCp2Cl x (x = 0, 1, 2) were also examined for 8 consecutive cycles without significant loss of the catalytic activity. This establishes the sustainable anchoring of the zirconocene complex on the surface and mesopores of the rGO@Fe3O4 nanohybrid system.
Collapse
Affiliation(s)
- Massood Bayzidi
- Department of Chemistry, Urmia University Urmia 5756151818 Iran
| | | |
Collapse
|
3
|
Ren L, Ji H, Heuzé K, Faure B, Genin E, Rousselot Pailley P, Tron T. Modulation of laccase catalysed oxidations at the surface of magnetic nanoparticles. Colloids Surf B Biointerfaces 2021; 206:111963. [PMID: 34293579 DOI: 10.1016/j.colsurfb.2021.111963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/22/2021] [Accepted: 06/29/2021] [Indexed: 11/18/2022]
Abstract
We explored the coupling of laccases to magnetic nanoparticles (MNPs) with different surface chemical coating. Two laccase variants offering two opposite and precise orientations of the substrate oxidation site were immobilised onto core-shell MNPs presenting either aliphatic aldehyde, aromatic aldehyde or azide functional groups at the particles surface. Oxidation capabilities of the six-resulting laccase-MNP hybrids were compared on ABTS and coniferyl alcohol. Herein, we show that the original interfaces created differ substantially in their reactivities with an amplitude from 1 to > 4 folds depending on the nature of the substrate. Taking enzyme orientation into account in the design of surface modification represents a way to introduce selectivity in laccase catalysed reactions.
Collapse
Affiliation(s)
- Lu Ren
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR7313, 13397 Marseille, France
| | - Hongtao Ji
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR5255, 33405 Talence cedex, France
| | - Karine Heuzé
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR5255, 33405 Talence cedex, France.
| | - Bruno Faure
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR7313, 13397 Marseille, France
| | - Emilie Genin
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR5255, 33405 Talence cedex, France
| | | | - Thierry Tron
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR7313, 13397 Marseille, France.
| |
Collapse
|
4
|
Shokri Z, Seidi F, Karami S, Li C, Saeb MR, Xiao H. Laccase immobilization onto natural polysaccharides for biosensing and biodegradation. Carbohydr Polym 2021; 262:117963. [DOI: 10.1016/j.carbpol.2021.117963] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/21/2021] [Accepted: 03/16/2021] [Indexed: 12/20/2022]
|
5
|
Kidibule PE, Costa J, Atrei A, Plou FJ, Fernandez-Lobato M, Pogni R. Production and characterization of chitooligosaccharides by the fungal chitinase Chit42 immobilized on magnetic nanoparticles and chitosan beads: selectivity, specificity and improved operational utility. RSC Adv 2021; 11:5529-5536. [PMID: 35423100 PMCID: PMC8694723 DOI: 10.1039/d0ra10409d] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/25/2021] [Indexed: 12/21/2022] Open
Abstract
Chitin-active enzymes are of great biotechnological interest due to the wide industrial application of chitinolytic materials. Non-stability and high cost are among limitations that hinder industrial application of soluble enzymes. Here we report the production and characterization of chitooligosaccharides (COS) using the fungal exo-chitinase Chit42 immobilized on magnetic nanoparticles and food-grade chitosan beads with an immobilization yield of about 60% using glutaraldehyde and genipin linkers. The immobilized enzyme gained operational stability with increasing temperature and acidic pH values, especially when using chitosan beads-genipin that retained more than 80% activity at pH 3. Biocatalysts generated COS from colloidal chitin and different chitosan types. The immobilized enzyme showed higher hydrolytic activity than free enzyme on chitosan, and produced COS mixtures with higher variability of size and acetylation degree. In addition, biocatalysts were reusable, easy to handle and to separate from the reaction mixture.
Collapse
Affiliation(s)
- Peter E Kidibule
- Department of Molecular Biology, Centre for Molecular Biology Severo Ochoa (CSIC-UAM), University Autonomous from Madrid Nicolás Cabrera, 1. Cantoblanco 28049 Madrid Spain
| | - Jessica Costa
- Department of Biotechnology, Chemistry and Pharmacy, Università di Siena Via A. Moro 2 53100 Siena Italy
| | - Andrea Atrei
- Department of Biotechnology, Chemistry and Pharmacy, Università di Siena Via A. Moro 2 53100 Siena Italy
| | - Francisco J Plou
- Institute of Catalysis and Petrochemistry, CSIC Marie Curie, 2. Cantoblanco 28049 Madrid Spain
| | - Maria Fernandez-Lobato
- Department of Molecular Biology, Centre for Molecular Biology Severo Ochoa (CSIC-UAM), University Autonomous from Madrid Nicolás Cabrera, 1. Cantoblanco 28049 Madrid Spain
| | - Rebecca Pogni
- Department of Biotechnology, Chemistry and Pharmacy, Università di Siena Via A. Moro 2 53100 Siena Italy
| |
Collapse
|
6
|
Kołodziejczak-Radzimska A, Budna A, Ciesielczyk F, Moszyński D, Jesionowski T. Laccase from Trametes versicolor supported onto mesoporous Al2O3: Stability tests and evaluations of catalytic activity. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
7
|
Shokri Z, Azimi N, Moradi S, Rostami A. A novel magnetically separable laccase‐mediator catalyst system for the aerobic oxidation of alcohols and 2‐substituted‐2,3‐dihydroquinazolin‐4(1
H
)‐ones under mild conditions. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zahra Shokri
- Department of Chemistry, Faculty of Science University of Kurdistan Zip Code 66177‐15175 Sanandaj Iran
| | - Nahid Azimi
- Department of Chemistry, Faculty of Science University of Kurdistan Zip Code 66177‐15175 Sanandaj Iran
| | - Sirvan Moradi
- Department of Chemistry, Faculty of Science University of Kurdistan Zip Code 66177‐15175 Sanandaj Iran
| | - Amin Rostami
- Department of Chemistry, Faculty of Science University of Kurdistan Zip Code 66177‐15175 Sanandaj Iran
| |
Collapse
|
8
|
Laccase Immobilized Fe3O4-Graphene Oxide Nanobiocatalyst Improves Stability and Immobilization Efficiency in the Green Preparation of Sulfa Drugs. Catalysts 2020. [DOI: 10.3390/catal10040459] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This paper, reports on the novel and green synthesis procedure for sulfonamides that involved the immobilization of Trametes Versicolor laccase onto the Fe3O4–graphene nanocomposite via glutaraldehyde (GA) crosslinking (Lac/Fe3O4/GO). Various parameters, mainly, activation time, GA, and laccase concentration were investigated and optimized. The results showed that the optimal contact time was 4 h, GA concentration was 5% while laccase concentration was 5 mg·mL−1, at which a high enzyme activity recovery was achieved (86%). In terms of the stability of immobilized laccase to temperature and storage conditions, the performance of the nanobiocatalyst was found to significantly exceed that of free laccase. The results have indicated that nearly 70% of relative activity for immobilized laccase remained after the incubation period of 2 h at 55 °C, but only 48% of free laccase remained within the same time period. Moreover, the immobilized laccase retained 88% of its initial activity after storage for 20 days. In case of the free laccase, the activity retained within the same time period was 32%. In addition, the nanobiocatalyst possessed better recycling performance as evidenced from the observation that after eight cycles of repeated use, it retained 85% of its original activity.
Collapse
|
9
|
Design and synthesis of a versatile cooperative catalytic aerobic oxidation system with co-immobilization of palladium nanoparticles and laccase into the cavities of MCF. J Catal 2020. [DOI: 10.1016/j.jcat.2019.12.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
10
|
Ghorashi N, Shokri Z, Moradi R, Abdelrasoul A, Rostami A. Aerobic oxidative synthesis of quinazolinones and benzothiazoles in the presence of laccase/DDQ as a bioinspired cooperative catalytic system under mild conditions. RSC Adv 2020; 10:14254-14261. [PMID: 35498453 PMCID: PMC9051882 DOI: 10.1039/c9ra10303a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 03/14/2020] [Indexed: 01/01/2023] Open
Abstract
The current study applied laccase/DDQ as a bioinspired cooperative catalytic system for the synthesis of quinazolinones (80–95% yield) and benzothiazoles (65–98% yield) using air or O2 as ideal oxidants in aqueous media at ambient temperature. The aerobic oxidative cyclization reactions occur in two steps: (i) chemical cyclization; (ii) chemoenzymatic oxidation. These methods are more environment-friendly, efficient, simple and practical than other reported methods due to the use of O2 as an oxidant, laccase as an eco-friendly biocatalyst, aqueous media as the solvent and free from any toxic transition metal and halide catalysts. Therefore, these methods can be applied in pharmaceutical and other sensitive synthetic procedures. In this paper laccase/DDQ as a bioinspired cooperative catalytic system was applied for the synthesis of quinazolinones and benzothiazoles using air or O2 as ideal oxidant in aqueous media under mild conditions.![]()
Collapse
Affiliation(s)
- Nadia Ghorashi
- Department of Chemistry
- Faculty of Science
- University of Kurdistan
- Sanandaj
- Iran
| | - Zahra Shokri
- Department of Chemistry
- Faculty of Science
- University of Kurdistan
- Sanandaj
- Iran
| | - Reza Moradi
- Department of Chemistry
- Faculty of Science
- University of Kurdistan
- Sanandaj
- Iran
| | - Amira Abdelrasoul
- Department of Chemical and Biological Engineering
- University of Saskatchewan
- Saskatoon
- Canada
| | - Amin Rostami
- Department of Chemistry
- Faculty of Science
- University of Kurdistan
- Sanandaj
- Iran
| |
Collapse
|
11
|
Abdollahi K, Yazdani F, Panahi R. Fabrication of the robust and recyclable tyrosinase-harboring biocatalyst using ethylenediamine functionalized superparamagnetic nanoparticles: nanocarrier characterization and immobilized enzyme properties. J Biol Inorg Chem 2019; 24:943-959. [PMID: 31359184 DOI: 10.1007/s00775-019-01690-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 07/13/2019] [Indexed: 01/25/2023]
Abstract
Immobilized tyrosinase onto the functionalized nanoparticles with the ability to be reused easily in different reaction cycles to degrade phenolic compounds is known as a substantial challenge, which can be overcome through surface modification of the particles via proper chemical groups. Herein, the synthesis and silica coating of superparamagnetic nanoparticles using a simple procedure as well as their potential for tyrosinase immobilization were demonstrated. Therefore, N-[3-(trimethoxysilyl)propyl]ethylenediamine was used to functionalize the silica-coated nanoparticles with amine groups. Then, the ethylenediamine functionalized magnetic nanoparticles (EMNPs) were suspended in a solution containing tetrahydrofuran and cyanuric chloride (as an activating agent) to modify nanocarriers. To immobilize enzyme, a mixture of tyrosinase and cyanuric chloride functionalized magnetic nanoparticle (Cyc/EMNPs) was shaken at room temperature. The particles were characterized by EDX, TGA, SEM, FTIR, and TEM. As a result, the successful functionalization of the magnetic nanoparticles and covalent attachment of tyrosinase onto the Cyc/EMNPs were confirmed. The fabricated nano-biocatalyst particles were semi-spherical in shape. The immobilized tyrosinase (Ty-Cyc/EMNPs) exhibited remarkable reusability of six consecutive reaction cycles while no considerable loss of activity was observed for the first three cycles. Moreover, the excellent stability of the biocatalyst at different temperatures and pHs was proved. The Ty-Cyc/EMNPs with interesting features are promising for practical applications in biosensor development and wastewater treatment.
Collapse
Affiliation(s)
- Kourosh Abdollahi
- Chemistry and Chemical Engineering Research Center of Iran (CCERCI), P.O. Box 14335-186, Tehran, Iran.,School of Science, RMIT University, Bundoora West Campus, Melbourne, VIC, 3083, Australia
| | - Farshad Yazdani
- Chemistry and Chemical Engineering Research Center of Iran (CCERCI), P.O. Box 14335-186, Tehran, Iran.
| | - Reza Panahi
- Chemistry and Chemical Engineering Research Center of Iran (CCERCI), P.O. Box 14335-186, Tehran, Iran
| |
Collapse
|
12
|
|
13
|
Khaledian D, Rostami A, Rouhani S. Magnetic core-shell nanoparticle-supported Sc (III): A novel and robust Lewis acid nanocatalyst for the selective oxidation of sulfides to sulfoxides by H2O2 under solvent-free conditions. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.02.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
14
|
Highly efficient and selective production of FFCA from CotA-TJ102 laccase-catalyzed oxidation of 5-HMF. Int J Biol Macromol 2019; 128:132-139. [DOI: 10.1016/j.ijbiomac.2019.01.104] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 11/19/2022]
|
15
|
Shariati M, Imanzadeh G, Rostami A, Ghoreishy N, Kheirjou S. Application of laccase/DDQ as a new bioinspired catalyst system for the aerobic oxidation of tetrahydroquinazolines and Hantzsch 1,4-dihydropyridines. CR CHIM 2019. [DOI: 10.1016/j.crci.2019.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
16
|
Piccinino D, Capecchi E, Botta L, Bollella P, Antiochia R, Crucianelli M, Saladino R. Layer by layer supported laccase on lignin nanoparticles catalyzes the selective oxidation of alcohols to aldehydes. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00962k] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Lignin nanoparticles support laccase from Trametes versicolor in the selective oxidation of alcohols to aldehydes, in the presence of redox mediators.
Collapse
Affiliation(s)
- Davide Piccinino
- Department of Biological and Ecological Sciences
- University of Tuscia
- 01100 Viterbo
- Italy
| | - Eliana Capecchi
- Department of Biological and Ecological Sciences
- University of Tuscia
- 01100 Viterbo
- Italy
| | - Lorenzo Botta
- Department of Biological and Ecological Sciences
- University of Tuscia
- 01100 Viterbo
- Italy
| | - Paolo Bollella
- Department of Chemistry and Drug Technologies
- Sapienza University of Rome
- 00185 Rome
- Italy
| | - Riccarda Antiochia
- Department of Chemistry and Drug Technologies
- Sapienza University of Rome
- 00185 Rome
- Italy
| | - Marcello Crucianelli
- Department of Physical and Chemical Sciences
- University of Aquila
- 67100 Aquila
- Italy
| | - Raffaele Saladino
- Department of Biological and Ecological Sciences
- University of Tuscia
- 01100 Viterbo
- Italy
| |
Collapse
|
17
|
Zhang C, Dong X, Guo Z, Sun Y. Remarkably enhanced activity and substrate affinity of lipase covalently bonded on zwitterionic polymer-grafted silica nanoparticles. J Colloid Interface Sci 2018; 519:145-153. [DOI: 10.1016/j.jcis.2018.02.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 02/08/2018] [Accepted: 02/12/2018] [Indexed: 11/30/2022]
|
18
|
Graphene oxide/CuFe2O4 nanocomposite as a novel scaffold for the immobilization of laccase and its application as a recyclable nanobiocatalyst for the green synthesis of arylsulfonyl benzenediols. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.01.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
19
|
Martínez-Montero L, Gotor V, Gotor-Fernández V, Lavandera I. Mild Chemoenzymatic Oxidation of Allylic sec-Alcohols. Application to Biocatalytic Stereoselective Redox Isomerizations. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03293] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Lía Martínez-Montero
- Organic and Inorganic Chemistry
Department, University of Oviedo, Avenida Julián Clavería
s/n, 33006 Oviedo, Spain
| | - Vicente Gotor
- Organic and Inorganic Chemistry
Department, University of Oviedo, Avenida Julián Clavería
s/n, 33006 Oviedo, Spain
| | - Vicente Gotor-Fernández
- Organic and Inorganic Chemistry
Department, University of Oviedo, Avenida Julián Clavería
s/n, 33006 Oviedo, Spain
| | - Iván Lavandera
- Organic and Inorganic Chemistry
Department, University of Oviedo, Avenida Julián Clavería
s/n, 33006 Oviedo, Spain
| |
Collapse
|
20
|
Rahimi A, Habibi D, Rostami A, Ali Zolfigol M, Mallakpour S. Laccase-catalyzed, aerobic oxidative coupling of 4-substituted urazoles with sodium arylsulfinates: Green and mild procedure for the synthesis of arylsulfonyl triazolidinediones. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2017.12.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
21
|
Zhang C, Gong L, Mao Q, Han P, Lu X, Qu J. Laccase immobilization and surface modification of activated carbon fibers by bio-inspired poly-dopamine. RSC Adv 2018; 8:14414-14421. [PMID: 35540792 PMCID: PMC9079870 DOI: 10.1039/c8ra01265b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 03/22/2018] [Indexed: 11/30/2022] Open
Abstract
In this study, we developed a new synthesis method for modifying activated carbon fibers (ACFs) by dopamine with oxidation-based self-polymerization (DA-ACFs). In addition, laccase was immobilized on the surface of unmodified ACFs (L-ACFs) and DA-ACFs (LDA-ACFs) via cross-linking after being incubated for 12 h at 5 °C. The surface composition and microstructure of the samples were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, attenuated total reflectance Fourier-transform infrared reflection and thermo-gravimetric analysis. The optimized laccase concentration for preparing the samples was 2.0 g L−1. The results demonstrated that the successful poly-dopamine modification increased the catalytic abilities of the ACFs in terms of biocompatibility and hydrophilicity. Compared with free laccase, the immobilized laccase exhibited significantly higher relative activity over a pH range of 3.5–6.5 and a temperature range of 30–60 °C; the thermo-stability increased, and 50% relative activity of the LDA-ACFs remained after 5 h at 55 °C. After six cycles of reuse, the relative activity of LDA-ACFs remained ≥60%, compared to 40% activity remaining for L-ACFs, and long-term storage stability was demonstrated. Moreover, the kinetic parameters (Km) of the two immobilized laccases were both higher than that of free laccase, whereas the maximum velocities (Vmax) were lower. These results indicate that the DA-ACFs are economical, simple, and efficient carries for enzyme immobilization, and can be suitable for further biotechnology and environmental applications. In this study, we developed a new synthesis method for modifying activated carbon fibers (ACFs) by dopamine with oxidation-based self-polymerization (DA-ACFs).![]()
Collapse
Affiliation(s)
- Chencheng Zhang
- Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 210009
- PR China
- College of Textile and Garment
| | - Lili Gong
- Nantong Health College of Jiangsu Province
- Nantong 226007
- PR China
| | - Qinghui Mao
- College of Textile and Garment
- Nantong University
- Nantong 226019
- PR China
| | - Pingfang Han
- Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 210009
- PR China
| | - Xiaoping Lu
- Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 210009
- PR China
| | - Jiangang Qu
- College of Textile and Garment
- Nantong University
- Nantong 226019
- PR China
| |
Collapse
|
22
|
Samui A, Sahu SK. One-pot synthesis of microporous nanoscale metal organic frameworks conjugated with laccase as a promising biocatalyst. NEW J CHEM 2018. [DOI: 10.1039/c7nj03619a] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fabrication of amine-functionalized NMOFs followed by immobilization of laccase, a multicopper oxidase,viaa one-pot synthetic procedure.
Collapse
Affiliation(s)
- Arpita Samui
- Department of Applied Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad 826004
- India
| | - Sumanta Kumar Sahu
- Department of Applied Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad 826004
- India
| |
Collapse
|
23
|
Catalytic Performance of Oligonucleotide-Templated Pt Nanozyme Evaluated by Laccase Substrates. Catal Letters 2017. [DOI: 10.1007/s10562-017-2106-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
24
|
Rostami A, Pourshiani O, Darvishi N, Atashkar B. Efficient and green oxidation of alcohols with tert -butyl hydrogenperoxide catalyzed by a recyclable magnetic core-shell nanoparticle-supported oxo-vanadium ephedrine complex. CR CHIM 2017. [DOI: 10.1016/j.crci.2016.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|