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Esmaeilnejad-Ahranjani P, Maboudi SA, Arpanaei A. Effect of the Structure of Magnetic Nanocomposite Adsorbents on the Lysozyme Separation Efficiency. ACS APPLIED BIO MATERIALS 2023; 6:191-202. [PMID: 36580633 DOI: 10.1021/acsabm.2c00833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In this study, we prepared various anionic magnetic adsorbents through the carboxyl functionalization of core/shell-structured Fe3O4/SiO2 (FS) particles by either succinic anhydride (FSC), low-molecular-weight (MW 1800) polyacrylic acid (PAA) (FSP1), or high-molecular-weight (MW 100,000) PAA (FSP2), and then, investigated the effect of the structure of adsorbents and operational parameters on their performance for the lysozyme separation. The type and size of functional molecules have significant effects on the surface concentration of functional carboxyl groups onto the adsorbent particles (increase in the order of FSP2 > FSP1 > FSC), and consequently on the adsorption efficiency (AE) (∼100, 98, and 62%, respectively) and adsorption capacity (AC) (∼1000, 980, and 621 mg·g-1, respectively) of the adsorbents. However, the loss of the antibacterial activity of separated lysozyme molecules due to the molecular conformational change increased in the order of FSP2 > FSP1 = FSC, as compared to the free lysozyme. The application of basic buffer solutions for the elution of adsorbed enzyme molecules resulted in more adverse effects on the enzyme activity. The obtained results recommend that FSP1 can be used as a suitable anionic adsorbent for the isolation of positively charged proteins, owing to its high adsorption capacity, excellent reusability, and structural stability, as well as the high purity, structural stability, and activity recovery of the isolated proteins.
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Affiliation(s)
- Parvaneh Esmaeilnejad-Ahranjani
- Department of Anaerobic Bacterial Vaccine Research and Production, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), P.O. Box 31975/148, Karaj, Iran
| | - Sayed Ali Maboudi
- Iran Food and Drug Administration, P.O. Box 1314715311, Tehran, Iran
| | - Ayyoob Arpanaei
- Industrial and Environmental Biotechnology Department, National Institute of Genetic Engineering and Biotechnology (NIGEB), P. O. Box 1417863171, Tehran, Iran.,Scion, Private Bag 3020, Rotorua3046, New Zealand
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2
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Chen L, Yue FS, Zhao YM, Wang SS, Li YC, Li G, Ge XC. Surface tailoring of polypropylene separators for lithium-ion batteries via N-hydroxyphthalimide catalysis. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110487] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Protein adsorption to poly(tetrafluoroethylene) membranes modified with grafted poly(acrylic acid) chains. Biointerphases 2020; 15:031011. [PMID: 32527100 DOI: 10.1116/6.0000137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Protein adsorption to biomaterial surfaces is important for the function of such materials with anchorage-dependent cell adhesion requiring the presence of adsorbed proteins. The current study evaluated five solid surfaces with poly(acrylic acid) (PAA) grafted from the surface of a poly(tetrafluoroethylene) membrane with respect to the adsorption of serum albumin (SA), lactoferrin (Lf), and lysozyme (Lys) from a phosphate buffer and NaCl solution or water for specific combinations. With the use of x-ray photoelectron spectroscopy, the relative amounts and protein layer thickness were evaluated. SA adsorption was governed by ionic repulsive forces and hydrophobic interactions as evidenced from an increase in the protein adsorption at lower pH (6.5 compared to 7.4) and a correlation with surface coverage when water (pH 6.5) was used as the medium. The adsorption of Lf and Lys followed similar trends for all samples. In general, ionic attractive forces dominated and a strong correlation of increasing protein adsorption with the PAA chain length was evident. This study concluded that all surfaces appear suitable for use in biomaterial applications where tissue ingrowth is desired and that the enhanced protein adsorption in a medium with high ionic strength (e.g., biological fluid) correlates with the PAA chain length rather than the surface coverage.
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4
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Yang Q, Dong Y, Qiu Y, Yang X, Cao H, Wu Y. Design of Functional Magnetic Nanocomposites for Bioseparation. Colloids Surf B Biointerfaces 2020; 191:111014. [PMID: 32325362 DOI: 10.1016/j.colsurfb.2020.111014] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/03/2020] [Indexed: 12/31/2022]
Abstract
Magnetic materials have been widely used in bioseparation in recent years due to their good biocompatibility, magnetic properties, and high binding capacity. In this review, we provide a brief introduction on the preparation and bioseparation applications of magnetic materials including the synthesis and surface modification of magnetic nanoparticles as well as the preparation and applications of magnetic nanocomposites in the separation of proteins, peptides, cells, exosomes and blood. The current limitations and remaining challenges in the fabrication process of magnetic materials for bioseparation will be also detailed.
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Affiliation(s)
- Qi Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan 610064, PR China; Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Yi Dong
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Yong Qiu
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Xinzhou Yang
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Han Cao
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan 610064, PR China.
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Surmacz K, Chmielarz P. Low Ppm Atom Transfer Radical Polymerization in (Mini)Emulsion Systems. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1717. [PMID: 32268579 PMCID: PMC7178667 DOI: 10.3390/ma13071717] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 03/28/2020] [Accepted: 04/03/2020] [Indexed: 12/17/2022]
Abstract
In the last decade, unceasing interest in atom transfer radical polymerization (ATRP) has been noted, especially in aqueous dispersion systems. Emulsion or miniemulsion is a preferred environment for industrial polymerization due to easier heat dissipation and lower production costs associated with the use of water as a dispersant. The main purpose of this review is to summarize ATRP methods used in emulsion media with different variants of initiating systems. A comparison of a dual over single catalytic approache by interfacial and ion pair catalysis is presented. In addition, future development directions for these methods are suggested for better use in biomedical and electronics industries.
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Affiliation(s)
- Karolina Surmacz
- Doctoral School of Engineering and Technical Sciences at the Rzeszow University of Technology, Al. Powstańców Warszawy 8, 35-959 Rzeszów, Poland;
| | - Paweł Chmielarz
- Department of Physical Chemistry, Faculty of Chemistry, Rzeszow University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
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González-Gómez MA, Belderbos S, Yañez-Vilar S, Piñeiro Y, Cleeren F, Bormans G, Deroose CM, Gsell W, Himmelreich U, Rivas J. Development of Superparamagnetic Nanoparticles Coated with Polyacrylic Acid and Aluminum Hydroxide as an Efficient Contrast Agent for Multimodal Imaging. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1626. [PMID: 31731823 PMCID: PMC6915788 DOI: 10.3390/nano9111626] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/05/2019] [Accepted: 11/08/2019] [Indexed: 02/06/2023]
Abstract
Early diagnosis of disease and follow-up of therapy is of vital importance for appropriate patient management since it allows rapid treatment, thereby reducing mortality and improving health and quality of life with lower expenditure for health care systems. New approaches include nanomedicine-based diagnosis combined with therapy. Nanoparticles (NPs), as contrast agents for in vivo diagnosis, have the advantage of combining several imaging agents that are visible using different modalities, thereby achieving high spatial resolution, high sensitivity, high specificity, morphological, and functional information. In this work, we present the development of aluminum hydroxide nanostructures embedded with polyacrylic acid (PAA) coated iron oxide superparamagnetic nanoparticles, Fe3O4@Al(OH)3, synthesized by a two-step co-precipitation and forced hydrolysis method, their physicochemical characterization and first biomedical studies as dual magnetic resonance imaging (MRI)/positron emission tomography (PET) contrast agents for cell imaging. The so-prepared NPs are size-controlled, with diameters below 250 nm, completely and homogeneously coated with an Al(OH)3 phase over the magnetite cores, superparamagnetic with high saturation magnetization value (Ms = 63 emu/g-Fe3O4), and porous at the surface with a chemical affinity for fluoride ion adsorption. The suitability as MRI and PET contrast agents was tested showing high transversal relaxivity (r2) (83.6 mM-1 s-1) and rapid uptake of 18F-labeled fluoride ions as a PET tracer. The loading stability with 18F-fluoride was tested in longitudinal experiments using water, buffer, and cell culture media. Even though the stability of the 18F-label varied, it remained stable under all conditions. A first in vivo experiment indicates the suitability of Fe3O4@Al(OH)3 nanoparticles as a dual contrast agent for sensitive short-term (PET) and high-resolution long-term imaging (MRI).
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Affiliation(s)
- Manuel Antonio González-Gómez
- Applied Physics Department, NANOMAG Laboratory, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (S.Y.-V.); (Y.P.); (J.R.)
| | - Sarah Belderbos
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium; (W.G.); (U.H.)
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium
| | - Susana Yañez-Vilar
- Applied Physics Department, NANOMAG Laboratory, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (S.Y.-V.); (Y.P.); (J.R.)
| | - Yolanda Piñeiro
- Applied Physics Department, NANOMAG Laboratory, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (S.Y.-V.); (Y.P.); (J.R.)
| | - Frederik Cleeren
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, O&NII Herestraat 49—Box 821, 3000 Leuven, Belgium; (F.C.); (G.B.)
| | - Guy Bormans
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, O&NII Herestraat 49—Box 821, 3000 Leuven, Belgium; (F.C.); (G.B.)
| | - Christophe M. Deroose
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium
- Nuclear Medicine and Molecular Imaging, Department of Imaging and Pathology, KU Leuven/UZ Leuven, Herestraat 49—Box 7003 59, 3000 Leuven, Belgium;
| | - Willy Gsell
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium; (W.G.); (U.H.)
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium
| | - Uwe Himmelreich
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium; (W.G.); (U.H.)
- Molecular Small Animal Imaging Center (MoSAIC), KU Leuven, O&N I, Herestraat 49—Box 505, 3000 Leuven, Belgium
| | - José Rivas
- Applied Physics Department, NANOMAG Laboratory, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (S.Y.-V.); (Y.P.); (J.R.)
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7
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Grafting antibacterial polymer brushes from titanium surface via polydopamine chemistry and activators regenerated by electron transfer ATRP. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.04.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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8
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Silver Nanoparticles Decorated by Amino Groups on the Periphery of Litchi-Like P(MMA-AA-DVB)@Fe3O4 Microspheres for the Catalytic Reduction of Methyl Orange. Catal Letters 2019. [DOI: 10.1007/s10562-019-02823-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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9
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Wang S, Meng H, Li Y, Sun D, Zhan Y, Ge X, Chen L. Polymer brushes grafted from graphene via bioinspired polydopamine chemistry and activators regenerated by electron transfer atom transfer radical polymerization. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.29310] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Shuangshuang Wang
- School of Materials Science and Engineering; Liaocheng University; Liaocheng 252059 China
| | - Han Meng
- School of Materials Science and Engineering; Liaocheng University; Liaocheng 252059 China
| | - Yuchao Li
- School of Materials Science and Engineering; Liaocheng University; Liaocheng 252059 China
| | - Da Sun
- School of Materials Science and Engineering; Liaocheng University; Liaocheng 252059 China
| | - Yanhu Zhan
- School of Materials Science and Engineering; Liaocheng University; Liaocheng 252059 China
| | - Xiangcai Ge
- School of Materials Science and Engineering; Liaocheng University; Liaocheng 252059 China
| | - Lin Chen
- School of Materials Science and Engineering; Liaocheng University; Liaocheng 252059 China
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10
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From fly ash waste slurry to functional adsorbent for valuable rare earth ion separation: An ingenious combination process involving modification, dewatering and grafting. J Colloid Interface Sci 2018; 513:427-437. [PMID: 29174649 DOI: 10.1016/j.jcis.2017.11.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/25/2017] [Accepted: 11/05/2017] [Indexed: 10/18/2022]
Abstract
Acid extracting aluminum from fly ash would produce pestilent secondary fly ash slurry with strong acidity, high content of Cl- and residual Al3+ that is difficult to be further used. In order to achieve the zero emission, a potential integrated treatment process for reutilization was proposed in this paper. By intelligent use of residual Al3+ in sludge as catalyst, hydrophobic modification of solid particle was taken with fatty acid via a heterogeneous esterification at normal temperature. Due to the solvophobic force, moisture content of its filter cake was 36.46%, which reduced 11.14% compared with the unmodified one, hydrophobicity scale can achieve 100% with modifier accounting for only 0.8% of solid content and the Cl- concentrations decreased from 20 to 0.102 g/L in wash liquor, thus greatly saving water for washing and energy for drying. Subsequently, based on the appearance of hydrocarbon chains on particle surface, a high-efficiency ultraviolet-induced grafting polymerization was implemented to fabricate density polyacrylic acid decorated fly ash particles from the surface "CH" sites, the resultant composite was proved to efficiently separate valuable rare-earth Gd3+ from wastewater with outstanding adsorption and regeneration performance, hence bringing high added-value utilization for these hazardous waste.
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11
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Gao S, Luo T, zhou Q, Luo W. A novel and efficient method on the recovery of nanosized CeO2 in Ce3+ wastewater remediation using modified sawdust as adsorbent. J Colloid Interface Sci 2018; 512:629-637. [DOI: 10.1016/j.jcis.2017.09.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 09/02/2017] [Accepted: 09/07/2017] [Indexed: 10/18/2022]
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12
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Zoppe JO, Ataman NC, Mocny P, Wang J, Moraes J, Klok HA. Surface-Initiated Controlled Radical Polymerization: State-of-the-Art, Opportunities, and Challenges in Surface and Interface Engineering with Polymer Brushes. Chem Rev 2017; 117:1105-1318. [PMID: 28135076 DOI: 10.1021/acs.chemrev.6b00314] [Citation(s) in RCA: 598] [Impact Index Per Article: 85.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The generation of polymer brushes by surface-initiated controlled radical polymerization (SI-CRP) techniques has become a powerful approach to tailor the chemical and physical properties of interfaces and has given rise to great advances in surface and interface engineering. Polymer brushes are defined as thin polymer films in which the individual polymer chains are tethered by one chain end to a solid interface. Significant advances have been made over the past years in the field of polymer brushes. This includes novel developments in SI-CRP, as well as the emergence of novel applications such as catalysis, electronics, nanomaterial synthesis and biosensing. Additionally, polymer brushes prepared via SI-CRP have been utilized to modify the surface of novel substrates such as natural fibers, polymer nanofibers, mesoporous materials, graphene, viruses and protein nanoparticles. The last years have also seen exciting advances in the chemical and physical characterization of polymer brushes, as well as an ever increasing set of computational and simulation tools that allow understanding and predictions of these surface-grafted polymer architectures. The aim of this contribution is to provide a comprehensive review that critically assesses recent advances in the field and highlights the opportunities and challenges for future work.
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Affiliation(s)
- Justin O Zoppe
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Nariye Cavusoglu Ataman
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Piotr Mocny
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Jian Wang
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - John Moraes
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
| | - Harm-Anton Klok
- Institut des Matériaux and Institut des Sciences et Ingénierie Chimiques, Laboratoire des Polymères Bâtiment MXD, Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 12 CH-1015 Lausanne, Switzerland
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13
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Superparamagnetic nanocomposites based on surface imprinting for biomacromolecular recognition. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:1076-1080. [DOI: 10.1016/j.msec.2016.03.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/03/2016] [Accepted: 03/14/2016] [Indexed: 11/19/2022]
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14
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Yang Q, Zhu Y, Luo B, Lan F, Wu Y, Gu Z. pH-Responsive magnetic nanospheres for the reversibly selective capture and release of glycoproteins. J Mater Chem B 2017; 5:1236-1245. [DOI: 10.1039/c6tb02662a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We present a pH-stimuli-responsive strategy to reversibly capture and release glycoproteins with high selectivity from a pure protein, model protein mixture and even a real biological sample.
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Affiliation(s)
- Qi Yang
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Yue Zhu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Bin Luo
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Fang Lan
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Yao Wu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
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15
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Yu T, Peng M, Yang J, Huang X, Long S, Zhang G, Wang X, Yang J. PES magnetic microspheres: preparation and performance for the removal of endocrine disruptor-BPA. RSC Adv 2017. [DOI: 10.1039/c7ra09761a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PES magnetic microspheres were prepared via electrospraying and in situ reaction, and they were applied for the removal of BPA.
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Affiliation(s)
- Ting Yu
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Minle Peng
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Jiacao Yang
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Xiang Huang
- College of Polymer Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Shengru Long
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Gang Zhang
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Xiaojun Wang
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
- State Key Laboratory of Organic-Inorganic Composites
| | - Jie Yang
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
- State Key Laboratory of Polymer Materials Engineering (Sichuan University)
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16
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Esmaeilnejad-Ahranjani P, Kazemeini M, Singh G, Arpanaei A. Study of Molecular Conformation and Activity-Related Properties of Lipase Immobilized onto Core-Shell Structured Polyacrylic Acid-Coated Magnetic Silica Nanocomposite Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3242-3252. [PMID: 26986897 DOI: 10.1021/acs.langmuir.5b03614] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A facile approach for the preparation of core-shell structured poly(acrylic acid) (PAA)-coated Fe3O4 cluster@SiO2 nanocomposite particles as the support materials for the lipase immobilization is reported. Low- or high-molecular-weight (1800 and 100,000, respectively) PAA molecules were covalently attached onto the surface of amine-functionalized magnetic silica nanoacomposite particles. The successful preparation of particles were verified by scanning transmission electron microscopy (STEM), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), zeta potential measurement, and Fourier-transform infrared (FTIR) techniques. Once lipase is covalently immobilized onto the particles with an average diameter of 210 ± 50 nm, resulting from high binding sites concentrations on the low- and high-molecular-weight PAA-coated particles, high lipase immobilization efficiencies (86.2% and 89.9%, respectively), and loading capacities (786 and 816 mg g(-1), respectively) are obtained. Results from circular dichroism (CD) analysis and catalytic activity tests reveal an increase in the β-sheet content of lipase molecules upon immobilization, along with an enhancement in their activities and stabilities. The lipases immobilized onto the low- and high-molecular-weight PAA-coated particles show maximum activities at 55 and 50 °C, respectively, which are ∼28% and ∼15% higher than that of the free lipase at its own optimum temperature (40 °C), respectively. The immobilized lipases exhibit excellent performance at broader temperature and pH ranges and high thermal and storage stabilities, as well as superior reusability. These prepared magnetic nanocomposite particles can be offered as suitable support materials for efficient immobilization of enzymes and improvement of the immobilized enzymes properties.
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Affiliation(s)
- Parvaneh Esmaeilnejad-Ahranjani
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology , PO Box: 14965/161, Tehran, Iran
- Department of Chemical and Petroleum Engineering, Sharif University of Technology , Tehran, Iran
| | - Mohammad Kazemeini
- Department of Chemical and Petroleum Engineering, Sharif University of Technology , Tehran, Iran
| | - Gurvinder Singh
- Department of Materials Science and Engineering, Norwegian University of Science and Technology , Trondheim, Norway
| | - Ayyoob Arpanaei
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology , PO Box: 14965/161, Tehran, Iran
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17
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Zhan X, Xie L, Chen H, Wu Y, Gu Z. Fabrication of hollow-structured composite microspheres with amphiphilic and superparamagnetic properties. RSC Adv 2016. [DOI: 10.1039/c5ra28095h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Solvent etching for constructing hollow-structured composite microspheres with superparamagnetic and amphiphilic properties.
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Affiliation(s)
- Xiaohui Zhan
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Liqin Xie
- College of Life Science and Technology
- Xinxiang Medical University
- Xinxiang 453003
- China
| | - Hongli Chen
- College of Life Science and Technology
- Xinxiang Medical University
- Xinxiang 453003
- China
| | - Yao Wu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu 610064
- China
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18
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Li W, Cai X, Ma S, Zhan X, Lan F, Wu Y, Gu Z. Synthesis of amphipathic superparamagnetic Fe3O4 Janus nanoparticles via a moderate strategy and their controllable self-assembly. RSC Adv 2016. [DOI: 10.1039/c6ra04648g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
We report a novel strategy that combines the Pickering emulsion approach and the ARGET-ATRP method to synthesize amphipathic Janus Fe3O4 nanoparticles. The prepared Janus Fe3O4 nanoparticles exhibited highly controllable self-assembly behaviors in different solvents.
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Affiliation(s)
- Wenliao Li
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Xiaojun Cai
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Shaohua Ma
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Xiaohui Zhan
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Fang Lan
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Yao Wu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu
- China
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