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Hormozi Jangi SR, Akhond M. High throughput urease immobilization onto a new metal-organic framework called nanosized electroactive quasi-coral-340 (NEQC-340) for water treatment and safe blood cleaning. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.03.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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2
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Hussain A, Rafeeq H, Afsheen N, Jabeen Z, Bilal M, Iqbal HMN. Urease-Based Biocatalytic Platforms―A Modern View of a Classic Enzyme with Applied Perspectives. Catal Letters 2021. [DOI: 10.1007/s10562-021-03647-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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3
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Fu Y, Jiang Z, Feng W. A peroxidase coordinating to Zn (II) preventing heme bleaching and resistant to the interference of H 2 O 2. Biotechnol Prog 2020; 37:e3075. [PMID: 32869526 DOI: 10.1002/btpr.3075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 08/10/2020] [Accepted: 08/27/2020] [Indexed: 01/14/2023]
Abstract
Dehaloperoxidase (DHP) catalyzes detoxifying halophenols. It is a heme-containing enzyme using H2 O2 as the oxidant. Heme bleaching from the active site is of great concern. In addition, the interference of DHP by H2 O2 leads to the inactivation of the enzyme. To solve these two problems, DHP is coordinated to Zn (II) in PBS buffer to form a biomineralized composite (DHP&Zn-CP). DHP&Zn-CP was characterized by measuring SEM and confocal images, as well as energy dispersive X-ray spectrometry mapping. Fluorescence spectra demonstrated that DHP&Zn-CP can prevent heme bleaching. Two-dimensional FTIR spectra were measured, dynamically providing insight into the structural change of DHP along the coordination process. Raman spectra were performed to analyze the structural change. The optical spectra confirmed that the forming of DHP&Zn-CP had a little effect on the structures of DHP. For the dehalogenation of 2,4,6-trichlorophenol, DHP&Zn-CP can tolerate the presence of H2 O2 and is resistant to the interference by H2 O2 . The catalytic efficiency of DHP&Zn-CP is much higher than that of free DHP.
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Affiliation(s)
- Yaqi Fu
- Department of Biological Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Zhengfeng Jiang
- Department of Biological Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Wei Feng
- Department of Biological Engineering, Beijing University of Chemical Technology, Beijing, China
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4
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Ulu A, Birhanli E, Boran F, Köytepe S, Yesilada O, Ateş B. Laccase-conjugated thiolated chitosan-Fe3O4 hybrid composite for biocatalytic degradation of organic dyes. Int J Biol Macromol 2020; 150:871-884. [DOI: 10.1016/j.ijbiomac.2020.02.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/30/2020] [Accepted: 02/02/2020] [Indexed: 12/20/2022]
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5
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Hormozi Jangi SR, Akhond M, Dehghani Z. High throughput covalent immobilization process for improvement of shelf-life, operational cycles, relative activity in organic media and enzymatic kinetics of urease and its application for urea removal from water samples. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.11.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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6
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Jáčová J, Jořenek M, Pospíšková K, Najdekr L, Zajoncová L, Friedecký D, Adam T. Urease-immobilized magnetic microparticles in urine sample preparation for metabolomic analysis by gas chromatography-mass spectrometry. J Chromatogr A 2019; 1605:360355. [DOI: 10.1016/j.chroma.2019.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 06/04/2019] [Accepted: 07/01/2019] [Indexed: 11/16/2022]
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7
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Bilal M, Iqbal HMN, Barceló D. Mitigation of bisphenol A using an array of laccase-based robust bio-catalytic cues - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 689:160-177. [PMID: 31271985 DOI: 10.1016/j.scitotenv.2019.06.403] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 06/23/2019] [Accepted: 06/24/2019] [Indexed: 02/05/2023]
Abstract
Bisphenol A (BPA) is a known endocrine disruptor that poses concerning environmental and human-health related issues and ecological risks. It has been largely used as an intermediate in the manufacture of epoxy resins and polycarbonate plastics. Traces of BPA can reach into the environment through inadequate or inefficient removal during wastewater treatment, uncontrolled landfill leachates, and leaching out from the discarded BPA-based materials. Several physicochemical treatment methods including adsorption, Fenton, ozonation, electrochemical and photochemical degradation, and membrane filtration, have been applied for BPA elimination. However, these methods are not adequate for large-scale treatment due to some inherent limitations. Benefiting from high catalytic efficiency and specificity, enzyme-based bio-catalytic degradation strategies are considered quite meaningful alternative for efficient and effective BPA removal from different routes. Among various oxidoreductases, i.e., laccases exhibited a superior potential for the remediation of BPA-containing wastewater. Enzymatic oxidation of BPA can be boosted by using various natural or synthetic redox mediators. Immobilized enzymes can expand their applicability to continuous bioprocessing and facilitates process intensification. Therefore, optimized formulations of insolubilized biocatalysts are of strategic interest in the environmental biotechnology. In this review, recent research studies dealing with BPA removal by the laccase-catalyzed system are presented. At first, the presence of BPA in the ecosystem, sources, exposure, and its impact on the living organisms and human beings is summarized. Then, we highlighted the use of crude as well as immobilized laccases for the degradation of BPA. In addition to toxicity and estrogenicity removal studies, the unresolved challenges, concluding remarks, and possible future direction is proposed in this important research area. It is palpable from the literature reviewed that free as well as immobilized forms of laccases have displayed noteworthy potential for BPA removal from wastewater.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L. 64849, Mexico.
| | - Damiá Barceló
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona 08034, Spain; ICRA, Catalan Institute for Water Research, University of Girona, Emili Grahit 101, Girona 17003, Spain; Botany and Microbiology Department, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia.
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8
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Functionalization of the magnetite nanoparticles with polysilsesquioxane-bearing N- and S-complexing groups to create solid-phase adsorbents. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01087-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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9
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Abstract
The development of carbon nanomaterials for adsorption based removal of organic pollutants from water is a progressive research subject. In this regard, carbon nanomaterials with bifunctionality towards polar and non-polar or even amphiphilic undesired materials are indeed attractive for further study and implementation. Here, we created carbon buckypaper adsorbents comprising amphiphilic (oxygenated amorphous carbon (a-COx)/graphite (G)) nanofilaments that can dynamically adsorb organic biomolecules (i.e., urease enzyme) and thus purify the wastewaters of relevant industries. Given the dynamic conditions of the test, the adsorbent was highly efficient in adsorption of the enzyme (88%) while being permeable to water (4750 L·h−1m−2bar−1); thus, it holds great promise for further development and upscaling. A subsequent citric acid functionalization declined selectivity of the membrane to urease, implying that the biomolecules adsorb mostly via graphitic domains rather than oxidized, polar amorphous carbon ones.
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10
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Zhang L, Du Y, Song J, Qi H. Biocompatible magnetic nanoparticles grafted by poly(carboxybetaine acrylamide) for enzyme immobilization. Int J Biol Macromol 2018; 118:1004-1012. [PMID: 29969641 DOI: 10.1016/j.ijbiomac.2018.06.181] [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: 06/06/2018] [Revised: 06/24/2018] [Accepted: 06/28/2018] [Indexed: 11/29/2022]
Abstract
Herein, the zwitterionic material poly (carboxybetaine acrylamide) was grafted onto iron oxide to obtain biocompatible magnetic nanoparticles Fe3O4-pCBAA which were employed to immobilize enzymes. The nanocomplxes Fe3O4-pCBAA were characterized using scanning electron microscopy (SEM), dynamic light scattering (DLS), zeta potential, Fourier transform-infrared (FT-IR) spectra and energy dispersive X-ray spectrometry (EDX). The urease as a model enzyme was immobilized with the novel supports and the properties of immobilized urease were further investigated in comparison with the free urease counterpart. The immobilized urease exhibited excellent thermodynamic and chemical stability. Particularly, 60% of initial activity was remained after being stored at 70 °C for 2 h while the free urease only remained 30%. Besides, the relative activity of immobilized enzyme was 1.7 times that of free ones after disposed in ethanol and 2-propanol for 2 h, and 7 times in DMF. Moreover, immobilized urease retained >80% of its initial activity after 5 cycles. In addition, the immobilization carrier Fe3O4-pCBAA displayed famous biocompatibility, and the immobilized urease performed better in complex biological samples, which were >85% and <60% of its initial activity for the immobilized and dissociative urease, respectively, in 20% and 25% of serum. These results confirm that the nanoparticles Fe3O4-pCBAA are biofriendly and efficient supports for enzyme immobilization and potential for practical applications in bio-microenvironments.
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Affiliation(s)
- Lei Zhang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Yan Du
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Jiayin Song
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Haishan Qi
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China.
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11
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Melnyk IV, Pogorilyi RP, Zub YL, Vaclavikova M, Gdula K, Dąbrowski A, Seisenbaeva GA, Kessler VG. Protection of Thiol Groups on the Surface of Magnetic Adsorbents and Their Application for Wastewater Treatment. Sci Rep 2018; 8:8592. [PMID: 29872076 PMCID: PMC5988753 DOI: 10.1038/s41598-018-26767-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 05/11/2018] [Indexed: 11/08/2022] Open
Abstract
The magnetite nanoparticles were functionalized with silica shells bearing mercaptopropyl (monofunctional) and mercaptopropyl-and-alkyl groups (bifunctional) by single-step sol-gel technique. The influence of synthetic conditions leading to increased amounts of active functional groups on the surface and improved capacity in the uptake of Ag(I), Cd(II), Hg(II), and Pb(II) cations was revealed. The physicochemical properties of obtained magnetic nanocomposites were investigated by FTIR, Raman, XRD, TEM, SEM, low-temperature nitrogen ad-/desorption measurements, TGA, and chemical microanalysis highlighting the efficiency of functionalization and mechanisms of the preparation procedures. The removal of the main group of heavy metal cations was studied in dependence from the pH, contact time and equilibrium concentration to analyze the complexes composition for the large scale production of improved adsorbents. It was demonstrated that introduction of the alkyl groups into the surface layer prevents the formation of the disulfide bonds between adjacent thiol groups. The obtained adsorbents were employed to treat real wastewater from Ruskov, Slovakia with concentration of Fe 319 ng/cm3, Cu 23.7 ng/cm3, Zn 36 ng/cm3, Mn 503 ng/cm3, Al 21 ng/cm3, As 34 ng/cm3, Pb 5.8 ng/cm3, Ni 35 ng/cm3, Co 4.2 ng/cm3, Cr 9.4 ng/cm3, Sb 6 ng/cm3, Cd 5 ng/cm3. These materials proved to be highly effective in the removal of 50% of all metal ions, espeсially Zn, Cd, and Pb ions from it and turned recyclable, opening for their sustainable use in water purification.
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Affiliation(s)
- Inna V Melnyk
- Chuiko Institute of Surface Chemistry NASU, Department of Surface Chemistry and Hybrid Materials, Kyiv, 03164, Ukraine.
- Institute of Geotechnics SAS, Department of Physical and Physico-chemical Methods of Mineral Processing, Kosice, 04001, Slovak Republic.
| | - Roman P Pogorilyi
- Chuiko Institute of Surface Chemistry NASU, Department of Surface Chemistry and Hybrid Materials, Kyiv, 03164, Ukraine
| | - Yuriy L Zub
- Chuiko Institute of Surface Chemistry NASU, Department of Surface Chemistry and Hybrid Materials, Kyiv, 03164, Ukraine
| | - Miroslava Vaclavikova
- Institute of Geotechnics SAS, Department of Physical and Physico-chemical Methods of Mineral Processing, Kosice, 04001, Slovak Republic
| | - Karolina Gdula
- Bohdan Dobrzański Institute of Agrophysics PAS, Department of Microstructure and Mechanics of Biomaterials, Lublin, 20-290, Poland
| | - Andrzej Dąbrowski
- Maria Curie-Skłodowska University, Faculty of Chemistry, Lublin, 20-031, Poland
| | - Gulaim A Seisenbaeva
- Swedish University of Agricultural Sciences, Department of Chemistry and Biotechnology, BioCenter, Uppsala, 750 07, Sweden
| | - Vadim G Kessler
- Swedish University of Agricultural Sciences, Department of Chemistry and Biotechnology, BioCenter, Uppsala, 750 07, Sweden
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12
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Celik C, Tasdemir D, Demirbas A, Katı A, Gul OT, Cimen B, Ocsoy I. Formation of functional nanobiocatalysts with a novel and encouraging immobilization approach and their versatile bioanalytical applications. RSC Adv 2018; 8:25298-25303. [PMID: 35539799 PMCID: PMC9082721 DOI: 10.1039/c8ra03250e] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/03/2018] [Indexed: 11/21/2022] Open
Abstract
The discovery of functional organic–inorganic hybrid nanoflowers (FNFs) consisting of proteins/enzymes as the organic components and Cu(ii) ion as the inorganic component has made an enormous impact on enzyme immobilization studies. The FNFs synthesized by an encouraging and novel approach not only showed high stabilities but also much enhanced catalytic activities as compared to free and conventionally immobilized enzymes. A recent development demonstrated that FNF formation has moved beyond the initial discovery in which enzymes and Cu2+ ions used as the organic and inorganic parts, respectively, are replaced with new organic (chitosan, amino acid and plant extracts) and inorganic (Cu2+ and Fe2+) materials. The new organic materials incorporated into FNFs act as Fenton-like agents and then show peroxidase-like activity owing to the metal ions and the porous structure of FNFs in the presence of hydrogen peroxide (H2O2). All FNFs have been widely utilized in many different scientific and industrial fields due to their greatly enhanced activities and stabilities. This review focuses primarily on the preparation, characterization, and bioanalytical applications of FNFs and explains the mechanisms of their formation and enhanced activities and stabilities. The discovery of functional organic–inorganic hybrid nanoflowers (FNFs) consisting of proteins/enzymes as the organic components and Cu(ii) ion as the inorganic component has made an enormous impact on enzyme immobilization studies.![]()
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Affiliation(s)
- Cagla Celik
- Department of Analytical Chemistry
- Faculty of Pharmacy
- Erciyes University
- Kayseri
- Turkey
| | - Didar Tasdemir
- Department of Analytical Chemistry
- Faculty of Pharmacy
- Erciyes University
- Kayseri
- Turkey
| | - Ayse Demirbas
- Faculty of Fisheries and Aquatic Sciences
- Recep Tayyip Erdogan University
- Rize
- Turkey
| | - Ahmet Katı
- Department of Detergent and Chemical Technologies
- Hayat Kimya Research and Development Center
- Turkey
| | - O. Tolga Gul
- Department of Physics
- Polatlı Faculty of Science and Arts
- Gazi University
- Ankara
- Turkey
| | - Behzat Cimen
- Department of Biochemistry
- Faculty of Pharmacy
- Erciyes University
- Kayseri
- Turkey
| | - Ismail Ocsoy
- Department of Analytical Chemistry
- Faculty of Pharmacy
- Erciyes University
- Kayseri
- Turkey
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13
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Pogorilyi RP, Pylypchuk I, Melnyk IV, Zub YL, Seisenbaeva GA, Kessler VG. Sol-Gel Derived Adsorbents with Enzymatic and Complexonate Functions for Complex Water Remediation. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E298. [PMID: 28956812 PMCID: PMC5666463 DOI: 10.3390/nano7100298] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 09/18/2017] [Accepted: 09/19/2017] [Indexed: 11/16/2022]
Abstract
Sol-gel technology is a versatile tool for preparation of complex silica-based materials with targeting functions for use as adsorbents in water purification. Most efficient removal of organic pollutants is achieved by using enzymatic reagents grafted on nano-carriers. However, enzymes are easily deactivated in the presence of heavy metal cations. In this work, we avoided inactivation of immobilized urease by Cu (II) and Cd (II) ions using magnetic nanoparticles provided with additional complexonate (diethylene triamine pentaacetic acid or DTPA) functions. Obtained nanomaterials were characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). According to TGA, the obtained Fe₃O₄/SiO₂-NH₂-DTPA nanoadsorbents contained up to 0.401 mmol/g of DTPA groups. In the concentration range Ceq = 0-50 mmol/L, maximum adsorption capacities towards Cu (II) and Cd (II) ions were 1.1 mmol/g and 1.7 mmol/g, respectively. Langmuir adsorption model fits experimental data in concentration range Ceq = 0-10 mmol/L. The adsorption mechanisms have been evaluated for both of cations. Crosslinking of 5 wt % of immobilized urease with glutaraldehyde prevented the loss of the enzyme in repeated use of the adsorbent and improved the stability of the enzymatic function leading to unchanged activity in at least 18 cycles. Crosslinking of 10 wt % urease on the surface of the particles allowed a decrease in urea concentration in 20 mmol/L model solutions to 2 mmol/L in up to 10 consequent decomposition cycles. Due to the presence of DTPA groups, Cu2+ ions in concentration 1 µmol/L did not significantly affect the urease activity. Obtained magnetic Fe₃O₄/SiO₂-NH₂-DTPA-Urease nanocomposite sorbents revealed a high potential for urease decomposition, even in presence of heavy metal ions.
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Affiliation(s)
- Roman P Pogorilyi
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17, General Naumov Street, 03164 Kyiv, Ukraine.
| | - Ievgen Pylypchuk
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17, General Naumov Street, 03164 Kyiv, Ukraine.
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden.
| | - Inna V Melnyk
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17, General Naumov Street, 03164 Kyiv, Ukraine.
| | - Yurii L Zub
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17, General Naumov Street, 03164 Kyiv, Ukraine.
| | - Gulaim A Seisenbaeva
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden.
| | - Vadim G Kessler
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden.
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14
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Naghibi S, Sahebi H. Employment of modified Fe3
O4
nanoparticles using thermo-sensitive polymer for extraction and pre-concentration of cefexime in biological samples. Biomed Chromatogr 2017; 32. [DOI: 10.1002/bmc.4082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 07/10/2017] [Accepted: 08/16/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Saman Naghibi
- Department of Biological Sciences; Birkbeck College, University of London; London UK
| | - Hamed Sahebi
- Department of Chemistry; Faculty of Science, Azad University Central Tehran Branch; Tehran Iran
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15
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Lin J, Lai Q, Liu Y, Chen S, Le X, Zhou X. Laccase – methacrylyol functionalized magnetic particles: Highly immobilized, reusable, and efficacious for methyl red decolourization. Int J Biol Macromol 2017; 102:144-152. [DOI: 10.1016/j.ijbiomac.2017.03.169] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/25/2017] [Accepted: 03/29/2017] [Indexed: 10/19/2022]
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16
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Verma N, Kumar N, Upadhyay LSB, Sahu R, Dutt A. Fabrication and Characterization of Cysteine-Functionalized Zinc Oxide Nanoparticles for Enzyme Immobilization. ANAL LETT 2017. [DOI: 10.1080/00032719.2016.1245315] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Nishant Verma
- Department of Biotechnology, National Institute of Technology, Raipur, Chhattisgarh, India
| | - Nikhil Kumar
- Department of Biotechnology, National Institute of Technology, Raipur, Chhattisgarh, India
| | | | - Reecha Sahu
- Department of Biotechnology, National Institute of Technology, Raipur, Chhattisgarh, India
| | - Aditya Dutt
- Department of Biotechnology, National Institute of Technology, Raipur, Chhattisgarh, India
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17
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Enzyme immobilization on a nanoadsorbent for improved stability against heavy metal poisoning. Colloids Surf B Biointerfaces 2016; 144:135-142. [DOI: 10.1016/j.colsurfb.2016.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 04/01/2016] [Accepted: 04/04/2016] [Indexed: 11/21/2022]
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18
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Altinkaynak C, Yilmaz I, Koksal Z, Özdemir H, Ocsoy I, Özdemir N. Preparation of lactoperoxidase incorporated hybrid nanoflower and its excellent activity and stability. Int J Biol Macromol 2016; 84:402-9. [DOI: 10.1016/j.ijbiomac.2015.12.018] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 12/08/2015] [Accepted: 12/10/2015] [Indexed: 12/01/2022]
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Pallavicini P, Cabrini E, Casu A, Dacarro G, Diaz-Fernandez YA, Falqui A, Milanese C, Vita F. Silane-coated magnetic nanoparticles with surface thiol functions for conjugation with gold nanostars. Dalton Trans 2015; 44:21088-98. [PMID: 26594047 DOI: 10.1039/c5dt02812d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Small (d∼ 8 nm) magnetite nanoparticles, Fe3O4NP, are prepared and coated with mercaptopropyl trimethoxysilane (MPTS) to form Fe3O4NP@MPTS. In the coating step controlled MPTS/Fe3O4NP molar ratios are used, ranging from 1 to 7.8 × 10(4). The total quantity of MPTS per Fe3O4NP is determined by SEM-EDS analysis and the average number of free, reactive -SH groups per Fe3O4NP is calculated by a colorimetric method. At very low molar ratios MPTS forms a submonolayer on the Fe3O4NP surface with all -SH free to react, while on increasing the MPTS/Fe3O4NP molar ratio the (CH3O)3Si- groups of MPTS polymerize, forming a progressively thicker shell, in which only a small fraction of the -SH groups, positioned on the shell surface, is available for further reaction. The MPTS shell reduces the magnetic interactions occurring between the magnetite cores, lowering the occurrence and strength of collective magnetic states, with Fe3O4NP@MPTS showing the typical behaviour expected for a sample with a mono-modal size distribution of superparamagnetic nanoparticles. Interaction of Fe3O4NP@MPTS with gold nanostars (GNS) was tested, using both Fe3O4NP@MPTS with a MPTS submonolayer and with increasing shell thickness. Provided that a good balance is used between the number of available -SH and the overall size of Fe3O4NP@MPTS, the free thiols of such nanoparticles bind GNS decorating their surface, as shown by UV-Vis spectroscopy and TEM imaging.
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Lin J, Liu Y, Chen S, Le X, Zhou X, Zhao Z, Ou Y, Yang J. Reversible immobilization of laccase onto metal-ion-chelated magnetic microspheres for bisphenol A removal. Int J Biol Macromol 2015; 84:189-99. [PMID: 26691384 DOI: 10.1016/j.ijbiomac.2015.12.013] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 12/01/2015] [Accepted: 12/09/2015] [Indexed: 01/09/2023]
Abstract
Increasing attention has been given to nanobiocatalysis for commercial applications. In this study, laccase was reversibly immobilized onto Cu(ΙΙ)- and Mn(ΙΙ)-chelated magnetic microspheres and successfully applied to remove bisphenol A (BPA) from water. The results indicated that the loading of laccase onto the metal-ion-chelated magnetic microspheres was approximately 100mg/g. After five successive adsorption-desorption cycles, the laccase adsorption capacities did not change. In comparison with free laccase, the thermal and storage stabilities of immobilized laccase were significantly improved. Immobilized laccase exhibited a high removal efficiency for BPA under the combined actions of biodegradation and adsorption. Greater than 85% of BPA was removed under optimum conditions. The effects of various factors on the BPA removal efficiency of immobilized laccase were analysed. The results showed that metal-ion-chelated magnetic microspheres have great potential for industrial applications.
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Affiliation(s)
- Jiahong Lin
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Yingju Liu
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Shi Chen
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China.
| | - Xueyi Le
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Xiaohua Zhou
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Zhiyong Zhao
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Yiyi Ou
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Jianhua Yang
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
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Somturk B, Yilmaz I, Altinkaynak C, Karatepe A, Özdemir N, Ocsoy I. Synthesis of urease hybrid nanoflowers and their enhanced catalytic properties. Enzyme Microb Technol 2015; 86:134-42. [PMID: 26992802 DOI: 10.1016/j.enzmictec.2015.09.005] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/09/2015] [Accepted: 09/12/2015] [Indexed: 11/25/2022]
Abstract
Increasing numbers of materials have been extensively used as platforms for enzyme immobilization to enhance catalytic activity and stability. Although stability of enzyme was accomplished with immobilization approaches, activity of the most of the enzymes was declined after immobilization. Herein, we synthesize the flower shaped-hybrid nanomaterials called hybrid nanoflower (HNF) consisting of urease enzyme and copper ions (Cu(2+)) and report a mechanistic elucidation of enhancement in both activity and stability of the HNF. We demonstrated how experimental factors influence morphology of the HNF. We proved that the HNF (synthesized from 0.02mgmL(-1) urease in 10mM PBS (pH 7.4) at +4°C) exhibited the highest catalytic activity of ∼2000% and ∼4000% when stored at +4°C and RT, respectively compared to free urease. The highest stability was also achieved by this HNF by maintaining 96.3% and 90.28% of its initial activity within storage of 30 days at +4°C and RT, respectively. This dramatically enhanced activity is attributed to high surface area, nanoscale-entrapped urease and favorable urease conformation of the HNF. The exceptional catalytic activity and stability properties of HNF can be taken advantage of to use it in fields of biomedicine and chemistry.
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Affiliation(s)
- Burcu Somturk
- Department of Chemistry, Faculty of Science, Erciyes University, Kayseri 38039, Turkey
| | - Ismail Yilmaz
- Department of Chemistry, Faculty of Science, Erciyes University, Kayseri 38039, Turkey
| | - Cevahir Altinkaynak
- Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, 38039 Kayseri, Turkey; Nanotechnology Research Center, Erciyes University, Kayseri 38039, Turkey
| | - Aslıhan Karatepe
- Department of Chemistry, Faculty of Arts and Science, Nevşehir Hacı Bektaş Veli University, 50300 Nevşehir, Turkey
| | - Nalan Özdemir
- Department of Chemistry, Faculty of Science, Erciyes University, Kayseri 38039, Turkey.
| | - Ismail Ocsoy
- Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, 38039 Kayseri, Turkey; Nanotechnology Research Center, Erciyes University, Kayseri 38039, Turkey.
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22
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Amphiphilic polymer conetworks with defined nanostructure and tailored swelling behavior for exploring the activation of an entrapped lipase in organic solvents. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.03.038] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Saylan Y, Uzun L, Denizli A. Alanine Functionalized Magnetic Nanoparticles for Reversible Amyloglucosidase Immobilization. Ind Eng Chem Res 2014. [DOI: 10.1021/ie503621w] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yeşeren Saylan
- Department of Chemistry, Hacettepe University, Ankara, 06640, Turkey
| | - Lokman Uzun
- Department of Chemistry, Hacettepe University, Ankara, 06640, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara, 06640, Turkey
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