1
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Mehrabi Z, Harsij Z, Taheri-Kafrani A. Polydopamine-functionalized polyethersulfone membrane: A paradigm advancement in the field of α-amylase stability and immobilization. J Biotechnol 2024; 394:S0168-1656(24)00222-0. [PMID: 39153546 DOI: 10.1016/j.jbiotec.2024.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 08/12/2024] [Accepted: 08/14/2024] [Indexed: 08/19/2024]
Abstract
Biocatalytic membranes have great potential in various industrial sectors, with the immobilization of enzymes being a crucial stage. Immobilizing enzymes through covalent bonds is a complex and time-consuming process for large-scale applications. Polydopamine (PDA) offers a more sustainable and eco-friendly alternative for enzyme immobilization. Therefore, surface modification with polydopamine as mussel-inspired antifouling coatings has increased resistance to fouling. In this study, α-amylase enzyme was covalently bound to a bioactive PDA-coated polyethersulfone (PES) membrane surface using cyanuric chloride as a linker. The optimal activity of α-amylase enzyme immobilized on PES/PDA membrane was obtained at temperature and pH of 55°C and 6.5, respectively. The immobilized enzyme can be reused up to five reaction cycles with 55% retention of initial activity. Besides, it maintained 60% of its activity after being stored for five weeks at 4°C. Additionally, the immobilized enzyme demonstrated increased Michaelis constant and maximum velocity values during starch hydrolysis. The results of the biofouling experiment of various membranes in a dead-end cell demonstrated that the PES membrane's water flux increased from 6722.7 Lmh to 7560.2 Lmh after PDA modification. Although α-amylase immobilization reduced the flux to 7458.5 Lmh due to enhanced hydrophilicity, compared to unmodified membrane. The findings of this study demonstrated that the membrane produced through co-deposition exhibited superior hydrophilicity, enhanced coating stability, and strong antifouling properties, positioning it as a promising candidate for industrial applications.
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Affiliation(s)
- Zahra Mehrabi
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, 81746-73441, Iran
| | - Zohreh Harsij
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, 81746-73441, Iran
| | - Asghar Taheri-Kafrani
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, 81746-73441, Iran.
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2
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Artico M, Roux C, Peruch F, Mingotaud AF, Montanier CY. Grafting of proteins onto polymeric surfaces: A synthesis and characterization challenge. Biotechnol Adv 2023; 64:108106. [PMID: 36738895 DOI: 10.1016/j.biotechadv.2023.108106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023]
Abstract
This review aims at answering the following question: how can a researcher be sure to succeed in grafting a protein onto a polymer surface? Even if protein immobilization on solid supports has been used industrially for a long time, hence enabling natural enzymes to serve as a powerful tool, emergence of new supports such as polymeric surfaces for the development of so-called intelligent materials requires new approaches. In this review, we introduce the challenges in grafting protein on synthetic polymers, mainly because compared to hard surfaces, polymers may be sensitive to various aqueous media, depending on the pH or reductive molecules, or may exhibit state transitions with temperature. Then, the specificity of grafting on synthetic polymers due to difference of chemical functions availability or difference of physical properties are summarized. We present next the various available routes to covalently bond the protein onto the polymeric substrates considering the functional groups coming from the monomers used during polymerization reaction or post-modification of the surfaces. We also focus our review on a major concern of grafting protein, which is avoiding the potential loss of function of the immobilized protein. Meanwhile, this review considers the different methods of characterization used to determine the grafting efficiency but also the behavior of enzymes once grafted. We finally dedicate the last part of this review to industrial application and future prospective, considering the sustainable processes based on green chemistry.
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Affiliation(s)
- M Artico
- Laboratory IMRCP, CNRS UMR 5623, University Paul Sabatier, Toulouse, France; TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France
| | - C Roux
- Laboratory IMRCP, CNRS UMR 5623, University Paul Sabatier, Toulouse, France
| | - F Peruch
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, Pessac, France
| | - A-F Mingotaud
- Laboratory IMRCP, CNRS UMR 5623, University Paul Sabatier, Toulouse, France.
| | - C Y Montanier
- TBI, Université de Toulouse, CNRS, INRAE, INSA, Toulouse, France.
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3
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Amani A, Taghavi S, Yazdian F, Mirzababaei S, Rashedi H, Faramarzi MA, Vahidi M. Immobilization of Urease Enzyme on Chitosan/Polyvinyl alcohol Electrospun Nanofibers. Biotechnol Prog 2022; 38:e3282. [PMID: 35707889 DOI: 10.1002/btpr.3282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 04/30/2022] [Accepted: 05/29/2022] [Indexed: 11/12/2022]
Abstract
Electrospun nanofibers have gained much attention for enzyme immobilization due to their high surface-to-volume ratio. In this study, urease was immobilized on chitosan/poly (vinyl alcohol) (PVA) nanofibers by both adsorption and crosslinking methods. In order to obtain nanofibers with more desirable properties, solutions with different ratios of chitosan and PVA were electrospun and crosslinked using glutaraldehyde. Comparing SEM images of the nanofibers, before and after immersing them in phosphate buffer, it was shown that higher chitosan content leads to more stable fibers. So, the solution with the chitosan to PVA ratio of 40:60 was used for enzyme immobilization. Then, the effects of initial protein concentration, temperature, incubation time, and method of immobilization were investigated to reach the highest enzyme activity. Under similar immobilization conditions, covalently immobilized urease showed higher activity, compared to uncrosslinked immobilized enzyme. Besides, it retained 30% of its initial activity after 10 times usage. So, this method was chosen for further investigation. Not only the activity of the immobilized enzyme was much higher than the free enzyme in a wide range of pH and temperature, but also stability of the immobilized enzyme was improved. Immobilized urease was then used to remove thiourea which is a toxic compound. Findings indicated 60% hydrolysis of initial thiourea in 12 hours. In conclusion, the findings showed that chitosan/PVA nanofibers are suitable candidates for the immobilization of urease. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Amir Amani
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran.,Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Taghavi
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Fatemeh Yazdian
- Department of Life Science Engineering, Faculty of New Science and Technologies, University of Tehran, Tehran, Iran
| | - Soheyl Mirzababaei
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Hamid Rashedi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahboobeh Vahidi
- Department of Pharmaceutical Biotechnology, Tehran University of Medical Sciences, Tehran, Iran
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4
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Aghamolaei M, Landarani-Isfahani A, Bahadori M, Nori ZZ, Rezaei S, Moghadam M, Tangestaninejad S, Mirkhani V, Mohammadpoor-Baltork I. Preparation and characterization of stable core/shell Fe 3O 4@Au decorated with an amine group for immobilization of lipase by covalent attachment. RSC Adv 2022; 12:5971-5977. [PMID: 35424559 PMCID: PMC8982027 DOI: 10.1039/d1ra08147k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 01/08/2022] [Indexed: 11/21/2022] Open
Abstract
The self-assembly approach was used for amine decoration of core/shell Fe3O4@Au with 4-aminothiophenol. This structure was used for covalent immobilization of lipase using a Ugi 4-component reaction. The amine group on the structure and carboxylic group from lipase can react in the Ugi reaction and a firm and stable covalent bond is created between enzyme and support. The synthesized structure was fully characterized and its activity was explored in different situations. The results showed the pH and temperature stability of immobilized lipase compared to free lipase in a wide range of pH and temperature. Also after 60 days, it showed excellent activity while residual activity for the free enzyme was only 10%. The synthesized structure was conveniently separated using an external magnetic field and reused 6 times without losing the activity of the immobilized enzyme. The self-assembly approach was used for amine decoration of core/shell Fe3O4@Au with 4-aminothiophenol.![]()
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Affiliation(s)
- Marziyeh Aghamolaei
- Catalysis Division, Department of Chemistry, University of Isfahan Isfahan 81746-73441 Iran
| | | | - Mehrnaz Bahadori
- Catalysis Division, Department of Chemistry, University of Isfahan Isfahan 81746-73441 Iran
| | - Zahra Zamani Nori
- Catalysis Division, Department of Chemistry, University of Isfahan Isfahan 81746-73441 Iran
| | - Saghar Rezaei
- Catalysis Division, Department of Chemistry, University of Isfahan Isfahan 81746-73441 Iran
| | - Majid Moghadam
- Catalysis Division, Department of Chemistry, University of Isfahan Isfahan 81746-73441 Iran
| | | | - Valiollah Mirkhani
- Catalysis Division, Department of Chemistry, University of Isfahan Isfahan 81746-73441 Iran
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5
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Morshed MN, Behary N, Bouazizi N, Guan J, Nierstrasz VA. An overview on biocatalysts immobilization on textiles: Preparation, progress and application in wastewater treatment. CHEMOSPHERE 2021; 279:130481. [PMID: 33894516 DOI: 10.1016/j.chemosphere.2021.130481] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/27/2021] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
The immobilization of biocatalysts or other bioactive components often means their transformation from a soluble to an insoluble state by attaching them to a solid support material. Various types of fibrous textiles from both natural and synthetic sources have been studied as suitable support material for biocatalysts immobilization. Strength, inexpensiveness, high surface area, high porosity, pore size, availability in various forms, and simple preparation/functionalization techniques have made textiles a primary choice for various applications. This led to the concept of a new domain called-biocatalysts immobilization on textiles. By addressing the growing advancement in biocatalysts immobilization on textile, this study provides the first detailed overview on this topic based on the terms of preparation, progress, and application in wastewater treatment. The fundamental reason behind the necessity of biocatalysts immobilized textile as well as the potential preparation methods has been identified and discussed. The overall progress and performances of biocatalysts immobilized textile have been scrutinized and summarized based on the form of textile, catalytic activity, and various influencing factors. This review also highlighted the potential challenges and future considerations that can enhance the pervasive use of such immobilized biocatalysts in various sustainable and green chemistry applications.
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Affiliation(s)
- Mohammad Neaz Morshed
- Department of Textile Technology, The Swedish School of Textiles, Faculty of Textiles, Engineering and Business, University of Borås, SE-50190, Borås, Sweden; Ecole Nationale Supérieure des Arts et Industries Textiles (ENSAIT), GEMTEX Laboratory, 2 allée Louise et Victor Champier BP 30329, 59056, Roubaix, France; Université de Lille, Nord de France, F-59000, Lille, France; College of Textile and Clothing Engineering, Soochow University, 215006, Suzhou, China.
| | - Nemeshwaree Behary
- Ecole Nationale Supérieure des Arts et Industries Textiles (ENSAIT), GEMTEX Laboratory, 2 allée Louise et Victor Champier BP 30329, 59056, Roubaix, France; Université de Lille, Nord de France, F-59000, Lille, France.
| | - Nabil Bouazizi
- Ecole Nationale Supérieure des Arts et Industries Textiles (ENSAIT), GEMTEX Laboratory, 2 allée Louise et Victor Champier BP 30329, 59056, Roubaix, France; Université de Lille, Nord de France, F-59000, Lille, France.
| | - Jinping Guan
- College of Textile and Clothing Engineering, Soochow University, 215006, Suzhou, China.
| | - Vincent A Nierstrasz
- Department of Textile Technology, The Swedish School of Textiles, Faculty of Textiles, Engineering and Business, University of Borås, SE-50190, Borås, Sweden.
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6
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Bilal M, Qamar SA, Ashraf SS, Rodríguez-Couto S, Iqbal HMN. Robust nanocarriers to engineer nanobiocatalysts for bioprocessing applications. Adv Colloid Interface Sci 2021; 293:102438. [PMID: 34023567 DOI: 10.1016/j.cis.2021.102438] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 02/08/2023]
Abstract
The synergistic integration of bio-catalysis engineering with nanostructured materials, as unique multifunctional carrier matrices, has emerged as a new interface of nanobiocatalysis (NBC). NBC is an emerging innovation that offers significant considerations to expand the designing and fabrication of robust catalysts at the nanoscale with improved catalytic characteristics for multipurpose bioprocessing applications. In addition, nanostructured materials with unique structural, physical, chemical, and functional entities have manifested significant contributions in mimicking the enzyme microenvironment. A fine-tuned enzyme microenvironment with an added-value of NBC offers chemo- regio- and stereo- selectivities and specificities. Furthermore, NBC is growing rapidly and will become a powerful norm in bio-catalysis with much controlled features, such as selectivity, specificity, stability, resistivity, induce activity, reaction efficacy, multi-usability, improved mass transfer efficiency, high catalytic turnover, optimal yield, ease in recovery, and cost-effectiveness. Considering the above critics and unique structural, physicochemical, and functional attributes, herein, we present and discuss advances in NBC and its bioprocessing applications in different fields. Briefly, this review is focused on four parts, i.e., (1) NBC as a drive towards applied nanobiocatalysts (as an introduction with opportunities), (2) promising nanocarriers to develop nanobiocatalysts, (3) applications in the fields of biotransformation, biofuel production, carbohydrate hydrolysis, bio-/nanosensing, detergent formulations, and extraction and purification of value-added compounds, and (4) current challenges, concluding remarks, and future trends.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China.
| | - Sarmad Ahmad Qamar
- Department of Biochemistry, University of Agriculture, Faisalabad, Pakistan
| | - Syed Salman Ashraf
- Department of Chemistry, College of Arts and Sciences, Khalifa University, Abu Dhabi, United Arab Emirates; Center for Biotechnology (BTC), Khalifa University of Science and Technology, Abu Dhabi P.O. Box 127788, United Arab Emirates
| | - Susana Rodríguez-Couto
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico.
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7
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Chen Z, Xie HY, Chen GE, Xu SJ, Xu ZL, Li YJ, Mao HF. Self-adhesive PMIA membranes with virus-like silica immobilized lipase for efficient biological aging of Chinese liquor. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Smith S, Goodge K, Delaney M, Struzyk A, Tansey N, Frey M. A Comprehensive Review of the Covalent Immobilization of Biomolecules onto Electrospun Nanofibers. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2142. [PMID: 33121181 PMCID: PMC7692479 DOI: 10.3390/nano10112142] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/20/2020] [Accepted: 10/21/2020] [Indexed: 01/08/2023]
Abstract
Biomolecule immobilization has attracted the attention of various fields such as fine chemistry and biomedicine for their use in several applications such as wastewater, immunosensors, biofuels, et cetera. The performance of immobilized biomolecules depends on the substrate and the immobilization method utilized. Electrospun nanofibers act as an excellent substrate for immobilization due to their large surface area to volume ratio and interconnectivity. While biomolecules can be immobilized using adsorption and encapsulation, covalent immobilization offers a way to permanently fix the material to the fiber surface resulting in high efficiency, good specificity, and excellent stability. This review aims to highlight the various covalent immobilization techniques being utilized and their benefits and drawbacks. These methods typically fall into two categories: (1) direct immobilization and (2) use of crosslinkers. Direct immobilization techniques are usually simple and utilize the strong electrophilic functional groups on the nanofiber. While crosslinkers are used as an intermediary between the nanofiber substrate and the biomolecule, with some crosslinkers being present in the final product and others simply facilitating the reactions. We aim to provide an explanation of each immobilization technique, biomolecules commonly paired with said technique and the benefit of immobilization over the free biomolecule.
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Affiliation(s)
- Soshana Smith
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY 14853, USA; (K.G.); (N.T.); (M.F.)
| | - Katarina Goodge
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY 14853, USA; (K.G.); (N.T.); (M.F.)
| | - Michael Delaney
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA; (M.D.); (A.S.)
| | - Ariel Struzyk
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA; (M.D.); (A.S.)
| | - Nicole Tansey
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY 14853, USA; (K.G.); (N.T.); (M.F.)
| | - Margaret Frey
- Department of Fiber Science and Apparel Design, Cornell University, Ithaca, NY 14853, USA; (K.G.); (N.T.); (M.F.)
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9
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Ning Y, Shen W, Ao F. Application of blocking and immobilization of electrospun fiber in the biomedical field. RSC Adv 2020; 10:37246-37265. [PMID: 35521229 PMCID: PMC9057162 DOI: 10.1039/d0ra06865a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 09/22/2020] [Indexed: 12/13/2022] Open
Abstract
The fiber obtained by electrospinning technology is a kind of biomaterial with excellent properties, which not only has a unique micro-nanostructure that gives it a large specific surface area and porosity, but also has satisfactory biocompatibility and degradability (if the spinning material used is a degradable polymer). These biomaterials provide a suitable place for cell attachment and proliferation, and can also achieve immobilization. On the other hand, its large porosity and three-dimensional spatial structure show unique blocking properties in drug delivery applications in order to achieve the purpose of slow release or even controlled release. The immobilization effect or blocking effect of these materials is mainly reflected in the hollow or core-shell structure. The purpose of this paper is to understand the application of the electrospun fiber based on biodegradable polymers (aliphatic polyesters) in the biomedical field, especially the immobilization or blocking effect of the electrospun fiber membrane on cells, drugs or enzymes. This paper focuses on the performance of these materials in tissue engineering, wound dressing, drug delivery system, and enzyme immobilization technology. Finally, based on the existing research basis of the electrospun fiber in the biomedical field, a potential research direction in the future is put forward, and few suggestions are also given for the technical problems that urgently need to be solved.
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Affiliation(s)
- Yuanlan Ning
- School of Food and Biological Engineering, Shaanxi University of Science & Technology Xi'an 710021 PR China +86-187-2925-6877 +86-187-1726-7199
| | - Wen Shen
- School of Food and Biological Engineering, Shaanxi University of Science & Technology Xi'an 710021 PR China +86-187-2925-6877 +86-187-1726-7199
| | - Fen Ao
- School of Food and Biological Engineering, Shaanxi University of Science & Technology Xi'an 710021 PR China +86-187-2925-6877 +86-187-1726-7199
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10
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Moradkhani M, Farshchi F, Hasanzadeh M, Mokhtarzadeh A. A novel bioassay for the monitoring of carcinoembryonic antigen in human biofluid using polymeric interface and immunosensing method. J Mol Recognit 2020; 33:e2852. [PMID: 32303119 DOI: 10.1002/jmr.2852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/10/2020] [Accepted: 04/03/2020] [Indexed: 01/22/2023]
Abstract
Carcinoembryonic antigen (CEA) is a member of a family of cell surface glycoproteins. Recognition of CEA is needed to monitor the physiological status of the patient for treatment and also it is important to assess the severity of the disease. In this work, we reported a novel sandwich-type electrochemical immunosensor based on gold nanoparticles functionalized cysteamine-glutaraldehyde (AuNPs-CysA-GA) and it successfully designed to detection of the CEA biomarker in a human plasma sample. The AuNPs-CysA-GA provides a large surface area for the effective immobilization of CEA antibody, as well as it ascertains the bioactivity and stability of immobilized CEA antigens. Biotinylated-anti-CEA antibody (Ab1) was immobilized on the surface of glassy carbon electrode (GCE) modified AuNPs-CysA-GA. Also, secondary antibody (HRP-Ab2) was costed immobilized to complete the sandwich part of immunosensor. Field emission scanning electron microscope (FE-SEM and EDS), was employed to monitor the sensor fabrication procedure. The immunosensor was used for the detection of CEA using differential pulse voltammetry (DPVs) technique. The proposed interface led to enhancement of accessible surface area for immobilizing high amount of anti-CEA antibody, increasing electrical conductivity, boosting stability, and biocompatibility. Finally, the low limit of quantitation (LLOQ) of the proposed immunosensor was obtained as 7 ng/mL with the linear range of 0.001-5 μg/L. The proposed immunoassay was successfully applied for the monitoring of the CEA in unprocessed human plasma samples. Obtained results paved that the proposed bioassay can be used as a novel bioassay for the clinical diagnosis of cancer based on CEA monitoring.
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Affiliation(s)
- Mahbubeh Moradkhani
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry, Higher Education Institute of Rab-Rashid, Tabriz, Iran.,Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Farshchi
- Nutrition Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Hematology-Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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11
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Bhavaniramya S, Vanajothi R, Vishnupriya S, Premkumar K, Al-Aboody MS, Vijayakumar R, Baskaran D. Enzyme Immobilization on Nanomaterials for Biosensor and Biocatalyst in Food and Biomedical Industry. Curr Pharm Des 2020; 25:2661-2676. [PMID: 31309885 DOI: 10.2174/1381612825666190712181403] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 07/03/2019] [Indexed: 12/30/2022]
Abstract
Enzymes exhibit a great catalytic activity for several physiological processes. Utilization of immobilized enzymes has a great potential in several food industries due to their excellent functional properties, simple processing and cost effectiveness during the past decades. Though they have several applications, they still exhibit some challenges. To overcome the challenges, nanoparticles with their unique physicochemical properties act as very attractive carriers for enzyme immobilization. The enzyme immobilization method is not only widely used in the food industry but is also a component methodology in the pharmaceutical industry. Compared to the free enzymes, immobilized forms are more robust and resistant to environmental changes. In this method, the mobility of enzymes is artificially restricted to changing their structure and properties. Due to their sensitive nature, the classical immobilization methods are still limited as a result of the reduction of enzyme activity. In order to improve the enzyme activity and their properties, nanomaterials are used as a carrier for enzyme immobilization. Recently, much attention has been directed towards the research on the potentiality of the immobilized enzymes in the food industry. Hence, the present review emphasizes the different types of immobilization methods that is presently used in the food industry and other applications. Various types of nanomaterials such as nanofibers, nanoflowers and magnetic nanoparticles are significantly used as a support material in the immobilization methods. However, several numbers of immobilized enzymes are used in the food industries to improve the processing methods which not only reduce the production cost but also the effluents from the industry.
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Affiliation(s)
- Sundaresan Bhavaniramya
- College of Food and Dairy Technology, Tamil Nadu Veterinary and Animal Sciences, University, Chennai-600052, Tamil Nadu, India
| | - Ramar Vanajothi
- Department of Biomedical Science, Bharathidasan University, Trichy-620024, Tamil Nadu, India
| | - Selvaraju Vishnupriya
- College of Food and Dairy Technology, Tamil Nadu Veterinary and Animal Sciences, University, Chennai-600052, Tamil Nadu, India
| | - Kumpati Premkumar
- Department of Biomedical Science, Bharathidasan University, Trichy-620024, Tamil Nadu, India
| | - Mohammad S Al-Aboody
- Department of Biology, College of Science in Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Rajendran Vijayakumar
- Department of Biology, College of Science in Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Dharmar Baskaran
- College of Food and Dairy Technology, Tamil Nadu Veterinary and Animal Sciences, University, Chennai-600052, Tamil Nadu, India
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12
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Zhang C, Li Y, Wang P, Zhang H. Electrospinning of nanofibers: Potentials and perspectives for active food packaging. Compr Rev Food Sci Food Saf 2020; 19:479-502. [DOI: 10.1111/1541-4337.12536] [Citation(s) in RCA: 151] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 11/20/2019] [Accepted: 12/16/2019] [Indexed: 02/07/2023]
Affiliation(s)
- Cen Zhang
- College of Biosystems Engineering and Food ScienceZhejiang University Hangzhou China
| | - Yang Li
- College of Biosystems Engineering and Food ScienceZhejiang University Hangzhou China
| | - Peng Wang
- College of Biosystems Engineering and Food ScienceZhejiang University Hangzhou China
| | - Hui Zhang
- College of Biosystems Engineering and Food ScienceZhejiang University Hangzhou China
- Zhejiang Key Laboratory for Agro‐Food ProcessingZhejiang University Hangzhou China
- Ningbo Research InstituteZhejiang University Ningbo China
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13
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Cysteine-modified poly(glycidyl methacrylate) grafted onto silica nanoparticles: New supports for significantly enhanced performance of immobilized lipase. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.02.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Cloete WJ, Hayward S, Swart P, Klumperman B. Degradation of Proteins and Starch by Combined Immobilization of Protease, α-Amylase and β-Galactosidase on a Single Electrospun Nanofibrous Membrane. Molecules 2019; 24:molecules24030508. [PMID: 30708952 PMCID: PMC6384644 DOI: 10.3390/molecules24030508] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/19/2019] [Accepted: 01/21/2019] [Indexed: 01/28/2023] Open
Abstract
Two commercially available enzymes, Dextrozyme (α-amylase) and Esperase (protease), were covalently immobilized on non-woven electrospun poly(styrene-co-maleic anhydride) nanofiber mats with partial retention of their catalytic activity. Immobilization was achieved for the enzymes on their own as well as in different combinations with an additional enzyme, β-galactosidase, on the same non-woven nanofiber mat. This experiment yielded a universal method for immobilizing different combinations of enzymes with nanofibrous mats containing maleic anhydride (MAnh) residues in the polymer backbone.
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Affiliation(s)
- William J Cloete
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
| | - Stefan Hayward
- Department of Biochemistry, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
| | - Pieter Swart
- Department of Biochemistry, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
| | - Bert Klumperman
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.
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15
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Aldhahri MM, Almulaiky YQ, El-Shishtawy RM, Al-Shawafi W, Alngadh A, Maghrabi R. Facile Immobilization of Enzyme via Co-Electrospinning: A Simple Method for Enhancing Enzyme Reusability and Monitoring an Activity-Based Organic Semiconductor. ACS OMEGA 2018; 3:6346-6350. [PMID: 31458817 PMCID: PMC6644564 DOI: 10.1021/acsomega.8b00366] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 06/04/2018] [Indexed: 05/31/2023]
Abstract
The stability, reusability, and monitoring of enzyme activity have been investigated to improve their efficiency for successful utilization in a broad range of industrial and medical applications. Herein, we present a simple method for fabricating an electrospun fiber/enzyme scaffold via co-electrospinning. The characterization of soluble and immobilized α-amylases with regard to pH, thermal stability, and reusability were studied. An organic light emitting material tris(8-hydroxyquinoline)aluminum was incorporated to monitor the enzyme activity for several reuses.
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Affiliation(s)
- Musab M. Aldhahri
- Center
of Nanotechnology, King Abdulaziz University, P.O. Box 80216, Jeddah 21589, Saudi Arabia
- Department of Biochemistry, Department of Chemistry, and Department of Biochemistry, King Abdulaziz University, P. O. Box 80200, Jeddah 21589, Saudi Arabia
| | - Yaaser Q. Almulaiky
- Department
of Biochemistry, Faculty of Science, University
of Jeddah, P.O.Box 80203, Jeddah 21589, Saudi Arabia
| | - Reda M. El-Shishtawy
- Department of Biochemistry, Department of Chemistry, and Department of Biochemistry, King Abdulaziz University, P. O. Box 80200, Jeddah 21589, Saudi Arabia
- Department
of Dyeing, Printing and Textile Auxiliaries, National Research Centre, Dokki, 71516 Cairo, Egypt
| | - Waleed Al-Shawafi
- Department of Biochemistry, Department of Chemistry, and Department of Biochemistry, King Abdulaziz University, P. O. Box 80200, Jeddah 21589, Saudi Arabia
| | - Ahmed Alngadh
- King Abdulaziz
City for Science and Technology, P.O.
Box 6086, Riyadh 11442, Saudi Arabia
| | - Rayan Maghrabi
- Department of Biochemistry, Department of Chemistry, and Department of Biochemistry, King Abdulaziz University, P. O. Box 80200, Jeddah 21589, Saudi Arabia
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16
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Electrospun epoxy-based nanofibrous membrane containing biocompatible feather polypeptide for highly stable and active covalent immobilization of lipase. Colloids Surf B Biointerfaces 2018; 166:277-285. [DOI: 10.1016/j.colsurfb.2018.03.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 03/23/2018] [Accepted: 03/24/2018] [Indexed: 12/25/2022]
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17
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Nano-Immobilized Biocatalysts for Biodiesel Production from Renewable and Sustainable Resources. Catalysts 2018. [DOI: 10.3390/catal8020068] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The cost of biodiesel production relies on feedstock cost. Edible oil is unfavorable as a biodiesel feedstock because of its expensive price. Thus, non-edible crop oil, waste oil, and microalgae oil have been considered as alternative resources. Non-edible crop oil and waste cooking oil are more suitable for enzymatic transesterification because they include a large amount of free fatty acids. Recently, enzymes have been integrated with nanomaterials as immobilization carriers. Nanomaterials can increase biocatalytic efficiency. The development of a nano-immobilized enzyme is one of the key factors for cost-effective biodiesel production. This paper presents the technology development of nanomaterials, including nanoparticles (magnetic and non-magnetic), carbon nanotubes, and nanofibers, and their application to the nano-immobilization of biocatalysts. The current status of biodiesel production using a variety of nano-immobilized lipase is also discussed.
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18
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Aghababaie M, Beheshti M, Bordbar AK, Razmjou A. Novel approaches to immobilize Candida rugosa lipase on nanocomposite membranes prepared by covalent attachment of magnetic nanoparticles on poly acrylonitrile membrane. RSC Adv 2018; 8:4561-4570. [PMID: 35539539 PMCID: PMC9078028 DOI: 10.1039/c7ra11866j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 12/29/2017] [Indexed: 11/21/2022] Open
Abstract
Novel methods have been developed for lipase immobilization on poly acrylonitrile (PAN) membranes to increase the activity and stability of the immobilized lipase.
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Affiliation(s)
- Marzieh Aghababaie
- Biotechnology Department
- Faculty of Advanced Sciences and Technologies
- University of Isfahan
- Iran
| | | | | | - Amir Razmjou
- Biotechnology Department
- Faculty of Advanced Sciences and Technologies
- University of Isfahan
- Iran
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19
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Madhavan A, Sindhu R, Binod P, Sukumaran RK, Pandey A. Strategies for design of improved biocatalysts for industrial applications. BIORESOURCE TECHNOLOGY 2017; 245:1304-1313. [PMID: 28533064 DOI: 10.1016/j.biortech.2017.05.031] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 04/28/2017] [Accepted: 05/05/2017] [Indexed: 05/07/2023]
Abstract
Biocatalysts are creating increased interest among researchers due to their unique properties. Several enzymes are efficiently produced by microorganisms. However, the use of natural enzymes as biocatalysts is hindered by low catalytic efficiency and stability during various industrial processes. Many advanced enzyme technologies have been developed to reshape the existing natural enzymes to reduce these limitations and prospecting of novel enzymes. Frequently used enzyme technologies include protein engineering by directed evolution, immobilisation techniques, metagenomics etc. This review summarizes recent and emerging advancements in the area of enzyme technologies for the development of novel biocatalysts and further discusses the future directions in this field.
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Affiliation(s)
- Aravind Madhavan
- Microbial Processes and Technology Division, National Institute for Interdisciplinary Science and Technology, CSIR, Trivandrum 695 019, India; Rajiv Gandhi Centre For Biotechnology, Trivandrum 695 014, India
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, National Institute for Interdisciplinary Science and Technology, CSIR, Trivandrum 695 019, India.
| | - Parameswaran Binod
- Microbial Processes and Technology Division, National Institute for Interdisciplinary Science and Technology, CSIR, Trivandrum 695 019, India
| | - Rajeev K Sukumaran
- Microbial Processes and Technology Division, National Institute for Interdisciplinary Science and Technology, CSIR, Trivandrum 695 019, India
| | - Ashok Pandey
- Microbial Processes and Technology Division, National Institute for Interdisciplinary Science and Technology, CSIR, Trivandrum 695 019, India; Center of Innovative and Applied Bioprocessing, Sector 81, Mohali, Punjab, India
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20
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Zhao R, Li X, Sun B, Ji H, Wang C. Diethylenetriamine-assisted synthesis of amino-rich hydrothermal carbon-coated electrospun polyacrylonitrile fiber adsorbents for the removal of Cr(VI) and 2,4-dichlorophenoxyacetic acid. J Colloid Interface Sci 2017; 487:297-309. [DOI: 10.1016/j.jcis.2016.10.057] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/17/2016] [Accepted: 10/20/2016] [Indexed: 11/25/2022]
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21
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Bhalani DV, Bera A, Chandel AKS, Kumar SB, Jewrajka SK. Multifunctionalization of Poly(vinylidene fluoride)/Reactive Copolymer Blend Membranes for Broad Spectrum Applications. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3102-3112. [PMID: 28009504 DOI: 10.1021/acsami.6b13235] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Simultaneous immobilization and cross-linking of antifouling/low toxic polymers, e.g., poly(ethylenimine) (PEI), dextran (Dex), agarose (Agr), poly(ethylene glycol) (PEG), PEI-Dex, and PEI-PEG conjugates, and stimuli-responsive copolymers on a porous membrane surface in mild reaction conditions is desirable for the enhancement of hydrophilicity, antifouling character, cytocompatibility, and inducing stimuli-responsive behavior. Grafting to technique is required since the precursors of most of these macromolecules are not amenable to surface-initiated polymerization. In this work, we report a versatile process for the simultaneous immobilization and cross-linking of a library of macromolecules on and into the blend membrane (PVDF-blend) of poly(vinylidene fluoride) and poly(methyl methacrylate)-co-poly(chloromethylstyrene). Sequential nucleophilic substitution reaction between activated halide moieties of the copolymer and amine groups of different macromolecules readily provided series of modified membranes. These membranes exhibited antifouling property superior to that of the unmodified membrane. The effectiveness of this technique has been demonstrated by the immobilization of pH or both pH- and temperature-responsive copolymer on PVDF-blend membrane for responsive separation of poly(ethylene oxide) and bovine serum albumin. Silver nanoparticles were also anchored on the select modified membranes surfaces for the enhancement of antibiofouling property. Our approach is useful to obtain verities of functional membranes and selection of membrane for a particular application.
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Affiliation(s)
- Dixit V Bhalani
- Reverse Osmosis Membrane Division, ‡AcSIR, and §Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute , G. B. Marg, Bhavnagar, Gujarat 364002, India
| | - Anupam Bera
- Reverse Osmosis Membrane Division, ‡AcSIR, and §Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute , G. B. Marg, Bhavnagar, Gujarat 364002, India
| | - Arvind K Singh Chandel
- Reverse Osmosis Membrane Division, ‡AcSIR, and §Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute , G. B. Marg, Bhavnagar, Gujarat 364002, India
| | - Sweta B Kumar
- Reverse Osmosis Membrane Division, ‡AcSIR, and §Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute , G. B. Marg, Bhavnagar, Gujarat 364002, India
| | - Suresh K Jewrajka
- Reverse Osmosis Membrane Division, ‡AcSIR, and §Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research Institute , G. B. Marg, Bhavnagar, Gujarat 364002, India
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22
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Wu Q, Xu Z, Duan Y, Zhu Y, Ou M, Xu X. Immobilization of tyrosinase on polyacrylonitrile beads: biodegradation of phenol from aqueous solution and the relevant cytotoxicity assessment. RSC Adv 2017. [DOI: 10.1039/c7ra03174b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An economical and stabilized immobilized-enzyme method was developed for the removal of phenol in wastewater.
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Affiliation(s)
- Qiao Wu
- College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350108
- China
| | - Zhiqun Xu
- College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350108
- China
| | - Yunjian Duan
- College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350108
- China
| | - Yincan Zhu
- College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350108
- China
| | - Minrui Ou
- College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350108
- China
| | - Xiaoping Xu
- College of Chemistry and Chemical Engineering
- Fuzhou University
- Fuzhou 350108
- China
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23
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Covalent immobilization of Candida rugosa lipase on a novel functionalized Fe 3 O 4 @SiO 2 dip-coated nanocomposite membrane. FOOD AND BIOPRODUCTS PROCESSING 2016. [DOI: 10.1016/j.fbp.2016.07.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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24
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Kalwar K, Sun WX, Li DL, Zhang XJ, Shan D. Coaxial electrospinning of polycaprolactone@chitosan: Characterization and silver nanoparticles incorporation for antibacterial activity. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.08.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Srbová J, Slováková M, Křípalová Z, Žárská M, Špačková M, Stránská D, Bílková Z. Covalent biofunctionalization of chitosan nanofibers with trypsin for high enzyme stability. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.05.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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26
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Wang S, Liu W, Zheng J, Xu X. Immobilization of horseradish peroxidase on modified PAN-based membranes for the removal of phenol from buffer solutions. CAN J CHEM ENG 2016. [DOI: 10.1002/cjce.22469] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Shuai Wang
- College of Chemistry; Fuzhou University; Fuzhou 350108 China
| | - Wei Liu
- College of Chemistry; Fuzhou University; Fuzhou 350108 China
| | - Jinwang Zheng
- Shanghai Tofflon Science and Technology Co., Ltd.; Shanghai 200000 China
| | - Xiaoping Xu
- College of Chemistry; Fuzhou University; Fuzhou 350108 China
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27
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Paranji S, Ganesan S. Cofactor-embedded nanoporous activated carbon matrices for the immobilization of intracellular enzymes and degradation of endocrine disruptor. Biotechnol Appl Biochem 2016; 64:364-384. [PMID: 26988244 DOI: 10.1002/bab.1492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/03/2016] [Indexed: 11/11/2022]
Abstract
The mixed intracellular enzyme (MICE) from Citrobacter freundii, capable of degrading o-phenylene diamine (OPD), was extracted and characterized. Cofactors such as zinc and copper ions enhanced the MICE activity. The functionalized nanoporous-activated carbon (FNAC) matrix, zinc-impregnated FNAC matrix (Zn2+ -FNAC), copper-impregnated FNAC matrix (Cu2+ -FNAC), and zinc- and copper-impregnated FNAC matrix (Zn2+ -Cu2+ -FNAC) were prepared and characterized to immobilize MICE. The parameters such as time (0-240 Min), pH (1-10), temperature (20-50 ºC), amount of MICE (1-5 mg), particle size of carbon (100-600 μm), and mass of carbon (0.5-2.5 g) were optimized for immobilization of MICE on different FNAC matrices. The carrier matrices in the free and MICE immobilized form were characterized using SEM, FT-IR, XPS, XRD, thermogravimetric analysis (TGA), and DSC analyses. The kinetic and adsorption models for the immobilization of MICE on FNAC matrices were studied. The parameters such as time, pH, temperature, concentration of OPD, and agitation speed were optimized for the degradation of OPD using FNAC-MICE and MICE-immobilized metal-impregnated FNAC matrices. The maximum amount of pyruvic acid formed was found to be 133 μg/mg of OPD using Zn2+ -Cu2+ -FNAC-MICE matrix. The kinetic models were studied for the formation of pyruvic acid on OPD degradation and confirmed using FT-IR spectroscopy.
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Affiliation(s)
- Saranya Paranji
- Environmental Technology Division, Council of Scientific and Industrial Research (CSIR), Central Leather Research Institute (CLRI), Adyar, Chennai, India
| | - Sekaran Ganesan
- Environmental Technology Division, Council of Scientific and Industrial Research (CSIR), Central Leather Research Institute (CLRI), Adyar, Chennai, India
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28
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Taheran M, Brar SK, Verma M, Surampalli RY, Zhang TC, Valero JR. Membrane processes for removal of pharmaceutically active compounds (PhACs) from water and wastewaters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 547:60-77. [PMID: 26789358 DOI: 10.1016/j.scitotenv.2015.12.139] [Citation(s) in RCA: 145] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 12/28/2015] [Accepted: 12/28/2015] [Indexed: 06/05/2023]
Abstract
Pharmaceutically active compounds (PhACs), which find their way easily into the water sources, are emerging as a major concern for drinking water quality and aquatic species. Therefore, their removal from water sources is a priority from environmental point of view. During the past decade, different methods including membrane separation, adsorption systems and chemical transformation have been evaluated for removal of these compounds. This paper reviews different aspects of PhAC removal by using membrane separation processes, as they have been conventionally known to show high potential in the production of superior quality drinking and industrial water. In brief, osmosis membranes can efficiently remove almost all PhACs though its operational cost is relatively high and nanofiltration (NF) membranes are highly influenced by electrostatic and hydrophobic interaction. Moreover, the efficiency of membrane bioreactors (MBRs) is difficult to predict due to the complex interaction of compounds with microorganisms. To improve the performance and robustness of membrane technology, it is suggested to combine membranes with other systems, such as activated carbon and enzymatic degradation.
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Affiliation(s)
- Mehrdad Taheran
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada
| | - Satinder K Brar
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada.
| | - M Verma
- CO(2) Solutions Inc., 2300, rue Jean-Perrin, Québec, Québec G2C 1T9, Canada
| | - R Y Surampalli
- Department of Civil Engineering, University of Nebraska-Lincoln, N104 SEC, PO Box 886105, Lincoln, NE 68588-6105, USA
| | - T C Zhang
- Department of Civil Engineering, University of Nebraska-Lincoln, N104 SEC, PO Box 886105, Lincoln, NE 68588-6105, USA
| | - J R Valero
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec G1K 9A9, Canada
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29
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Torres-Giner S, Pérez-Masiá R, Lagaron JM. A review on electrospun polymer nanostructures as advanced bioactive platforms. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24274] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Sergio Torres-Giner
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish National Research Council (CSIC), Avenida Agustín Escardino 7; Paterna 46980 Spain
| | - Rocío Pérez-Masiá
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish National Research Council (CSIC), Avenida Agustín Escardino 7; Paterna 46980 Spain
| | - Jose M. Lagaron
- Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish National Research Council (CSIC), Avenida Agustín Escardino 7; Paterna 46980 Spain
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30
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31
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Incorporating small molecules or biologics into nanofibers for optimized drug release: A review. Int J Pharm 2015; 494:516-30. [DOI: 10.1016/j.ijpharm.2015.08.054] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 08/18/2015] [Accepted: 08/19/2015] [Indexed: 12/23/2022]
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32
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de Faria AF, Perreault F, Shaulsky E, Arias Chavez LH, Elimelech M. Antimicrobial Electrospun Biopolymer Nanofiber Mats Functionalized with Graphene Oxide-Silver Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12751-9. [PMID: 25980639 DOI: 10.1021/acsami.5b01639] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Functionalization of electrospun mats with antimicrobial nanomaterials is an attractive strategy to develop polymer coating materials to prevent bacterial colonization on surfaces. In this study we demonstrated a feasible approach to produce antimicrobial electrospun mats through a postfabrication binding of graphene-based nanocomposites to the nanofibers' surface. A mixture of poly(lactide-co-glycolide) (PLGA) and chitosan was electrospun to yield cylindrical and narrow-diameter (356 nm) polymeric fibers. To achieve a robust antimicrobial property, the PLGA-chitosan mats were functionalized with graphene oxide decorated with silver nanoparticles (GO-Ag) via a chemical reaction between the carboxyl groups of graphene and the primary amine functional groups on the PLGA-chitosan fibers using 3-(dimethylamino)propyl-N'-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide as cross-linking agents. The attachment of GO-Ag sheets to the surface of PLGA-chitosan fibers was successfully revealed by scanning and transmission electron images. Upon direct contact with bacterial cells, the PLGA-chitosan mats functionalized with GO-Ag nanocomposites were able to effectively inactivate both Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus) bacteria. Our results suggest that covalent binding of GO-Ag nanocomposites to the surface of PLGA-chitosan mats opens up new opportunities for the production of cost-effective, scalable, and biodegradable coating materials with the ability to hinder microbial proliferation on solid surfaces.
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Affiliation(s)
- Andreia F de Faria
- †Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - François Perreault
- †Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Evyatar Shaulsky
- †Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
| | - Laura H Arias Chavez
- ‡Department of Chemical Engineering, Tennessee Technological University, Cookeville, Tennessee 38505, United States
| | - Menachem Elimelech
- †Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, United States
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33
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Inozemtseva OA, Salkovskiy YE, Severyukhina AN, Vidyasheva IV, Petrova NV, Metwally HA, Stetciura IY, Gorin DA. Electrospinning of functional materials for biomedicine and tissue engineering. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4435] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Wang S, Fang H, Wen Y, Cai M, Liu W, He S, Xu X. Applications of HRP-immobilized catalytic beads to the removal of 2,4-dichlorophenol from wastewater. RSC Adv 2015. [DOI: 10.1039/c5ra08688d] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel HRP-immobilized beads with the excellent catalytic activity were successfully fabricated to remove 2,4-dichlorophenol from wastewater.
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Affiliation(s)
- Shuai Wang
- College of Chemistry
- Fuzhou University
- Fuzhou
- P.R. China
| | - He Fang
- College of Chemistry
- Fuzhou University
- Fuzhou
- P.R. China
| | - Yukai Wen
- College of Chemistry
- Fuzhou University
- Fuzhou
- P.R. China
| | - Minhua Cai
- College of Chemistry
- Fuzhou University
- Fuzhou
- P.R. China
| | - Wei Liu
- College of Chemistry
- Fuzhou University
- Fuzhou
- P.R. China
| | - Shengbin He
- College of Chemistry
- Fuzhou University
- Fuzhou
- P.R. China
| | - Xiaoping Xu
- College of Chemistry
- Fuzhou University
- Fuzhou
- P.R. China
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35
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Quan J, Liu Z, Branford-White C, Nie H, Zhu L. Fabrication of glycopolymer/MWCNTs composite nanofibers and its enzyme immobilization applications. Colloids Surf B Biointerfaces 2014; 121:417-24. [DOI: 10.1016/j.colsurfb.2014.06.030] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/16/2014] [Accepted: 06/12/2014] [Indexed: 01/25/2023]
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36
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Immobilization of horseradish peroxidase (HRP) on polyimide nanofibers blending with carbon nanotubes. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.04.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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37
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Hamlekhan A, Moztarzadeh F, Mozafari M, Azami M, Nezafati N. Preparation of laminated poly(ε-caprolactone)-gelatin-hydroxyapatite nanocomposite scaffold bioengineered via compound techniques for bone substitution. BIOMATTER 2014; 1:91-101. [PMID: 23507731 PMCID: PMC3548252 DOI: 10.4161/biom.1.1.17445] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this research, new bioactive nanocomposite scaffolds were successfully developed using poly(ε-caprolactone) (PCL), cross-linked gelatin and nanoparticles of hydroxyapatite (HAp) after testing different solvents and methods. First, HAp powder was synthesized via a chemical precipitation technique and characterized. Then, the nanocomposites were prepared through layer solvent casting combined with freeze-drying and lamination techniques. According to the results, the increasing of the PCL weight in the scaffolds led to the improvement of the mechanical properties. The amount of ultimate stress, stiffness and also elastic modulus increased from 8 MPa for 0% wt PCL to 23.5 MPa for 50% wt PCL. The biomineralization study revealed the formation of an apatite layer on the scaffolds after immersion in simulated body fluid (SBF). The Ca-P ratios were in accordance to nonstoichiometric biological apatite, which was approximately 1.67. The in vitro biocompatibility and cytocompatibility of the scaffolds were tested using mesenchymal stem cells (MSCs), and the results indicated no sign of toxicity, and cells were found to be attached to the scaffold walls. The in vivo biocompatibility and osteogenesis of these scaffolds in the animal experiments is also under investigation, and the result will be published at the end of the study.
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Affiliation(s)
- Azhang Hamlekhan
- Biomaterials Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, Tehran, Iran
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Wang Q, Cui J, Li G, Zhang J, Li D, Huang F, Wei Q. Laccase immobilized on a PAN/adsorbents composite nanofibrous membrane for catechol treatment by a biocatalysis/adsorption process. Molecules 2014; 19:3376-88. [PMID: 24651612 PMCID: PMC6271767 DOI: 10.3390/molecules19033376] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 03/06/2014] [Accepted: 03/06/2014] [Indexed: 12/07/2022] Open
Abstract
The treatment of catechol via biocatalysis and adsorption with a commercial laccase immobilized on polyacrylonitrile/montmorillonite/graphene oxide (PAN/MMT/GO) composite nanofibers was evaluated with a homemade nanofibrous membrane reactor. The properties in this process of the immobilized laccase on PAN, PAN/MMT as well as PAN/MMT/GO with different weight ratios of MMT and GO were investigated. These membranes were successfully applied for removal of catechol from an aqueous solution. Scanning electron microscope images revealed different morphologies of the enzyme aggregates on different supports. After incorporation of MMT or MMT/GO, the optimum pH showed an alkaline shift to 4, compared to 3.5 for laccase immobilized on pure PAN nanofibers. The optimum temperature was at 55 °C for all the immobilized enzymes. Besides, the addition of GO improved the operational stability and storage stability. A 39% ± 2.23% chemical oxygen demand (COD) removal from the catechol aqueous solution was achieved. Experimental results suggested that laccase, PAN, adsorbent nanoparticles (MMT/GO) can be combined together for catechol treatment in industrial applications.
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Affiliation(s)
- Qingqing Wang
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China.
| | - Jing Cui
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China.
| | - Guohui Li
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Jinning Zhang
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China.
| | - Dawei Li
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China.
| | - Fenglin Huang
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China.
| | - Qufu Wei
- Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China.
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39
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Saranya P, Ramani K, Sekaran G. Biocatalytic approach on the treatment of edible oil refinery wastewater. RSC Adv 2014. [DOI: 10.1039/c3ra43668c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Xu R, Chi C, Li F, Zhang B. Laccase-polyacrylonitrile nanofibrous membrane: highly immobilized, stable, reusable, and efficacious for 2,4,6-trichlorophenol removal. ACS APPLIED MATERIALS & INTERFACES 2013; 5:12554-12560. [PMID: 24245853 DOI: 10.1021/am403849q] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Increasing attention has been given to nanobiocatalysis for commercial applications. In this study, laccase was immobilized on polyacrylonitrile (PAN) nanofibrous membranes through ethanol/HCl method of amidination reaction and successfully applied for removal of 2,4,6-trichlorophenol (TCP) from water. PAN membranes with fiber diameters from 200 nm to 300 nm were fabricated via electrospinning and provided a large surface area for enzyme immobilization and catalytic reactions. Images of scanning electron microscope demonstrated the enzyme molecules were aggregated on the nanofiber surface. The immobilized laccase exhibited 72% of the free enzyme activity and kept 60% of its initial activity after 10 operation cycles. Moreover, the storage stability of the immobilized laccase was considered excellent because they maintained more than 92% of the initial activity after 18 days of storage, whereas the free laccase retained only 20%. The laccase-PAN nanofibrous membranes exhibited high removal efficiency of TCP under the combined actions of biodegradation and adsorption. More than 85% of the TCP was removed under optimum conditions. Effects of various factors on TCP removal efficiency of the immobilized laccase were analyzed. Results suggest that laccase-PAN nanofibrous membranes can be used in removing TCP from aqueous sources and have potential for use in other commercial applications.
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Affiliation(s)
- Ran Xu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University , Shanghai 200092, P. R. China
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Dave R, Jayaraj P, Ajikumar PK, Joshi H, Mathews T, Venugopalan VP. Endogenously triggered electrospun fibres for tailored and controlled antibiotic release. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1305-19. [DOI: 10.1080/09205063.2012.757725] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Rachna Dave
- a Biofouling and Biofilm Processes Section, Water and Steam Chemistry Division , Bhabha Atomic Research Centre Facilities , Kalpakkam , 603 102 , India
| | - Prithi Jayaraj
- b Thin Films and Coatings Section, Surface and Nanoscience Division, Materials Science Group , Indira Gandhi Centre for Atomic Research , Kalpakkam , 603 102 , India
| | - Puthuparampil K. Ajikumar
- c Nanomaterials & Characterization Section, Surface & Nanoscience Division, Materials Science Group , Indira Gandhi Centre for Atomic Research , Kalpakkam , 603 102 , India
| | - Hiren Joshi
- a Biofouling and Biofilm Processes Section, Water and Steam Chemistry Division , Bhabha Atomic Research Centre Facilities , Kalpakkam , 603 102 , India
| | - Tom Mathews
- b Thin Films and Coatings Section, Surface and Nanoscience Division, Materials Science Group , Indira Gandhi Centre for Atomic Research , Kalpakkam , 603 102 , India
| | - Vayalam P. Venugopalan
- a Biofouling and Biofilm Processes Section, Water and Steam Chemistry Division , Bhabha Atomic Research Centre Facilities , Kalpakkam , 603 102 , India
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Verma ML, Barrow CJ, Puri M. Nanobiotechnology as a novel paradigm for enzyme immobilisation and stabilisation with potential applications in biodiesel production. Appl Microbiol Biotechnol 2012; 97:23-39. [DOI: 10.1007/s00253-012-4535-9] [Citation(s) in RCA: 193] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 10/19/2012] [Accepted: 10/20/2012] [Indexed: 12/01/2022]
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Wang SG, Jiang X, Chen PC, Yu AG, Huang XJ. Preparation of coaxial-electrospun poly[bis(p-methylphenoxy)]phosphazene nanofiber membrane for enzyme immobilization. Int J Mol Sci 2012. [PMID: 23203055 PMCID: PMC3509571 DOI: 10.3390/ijms131114136] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A core/sheath nanofiber membrane with poly[bis(p-methylphenoxy)]phosphazene (PMPPh) as the sheath and easily spinnable polyacrylonitrile (PAN) as the core was prepared via a coaxial electrospinning process. Field-emission scanning electron microscopy and transmission electron microscopy were used to characterize the morphology of the nanofiber membrane. It was found that the concentration of the PAN spinning solution and the ratio of the core/sheath solution flow rates played a decisive role in the coaxial electrospinning process. In addition, the stabilized core/sheath PMPPh nanofiber membrane was investigated as a support for enzyme immobilization because of its excellent biocompatibility, high surface/volume ratio, and large porosity. Lipase from Candida rugosa was immobilized on the nanofiber membrane by adsorption. The properties of the immobilized lipase on the polyphosphazene nanofiber membrane were studied and compared with those of a PAN nanofiber membrane. The results showed that the adsorption capacity (20.4 ± 2.7 mg/g) and activity retention (63.7%) of the immobilized lipase on the polyphosphazene nanofiber membrane were higher than those on the PAN membrane.
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Affiliation(s)
- Shu-Gen Wang
- Key Laboratory of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, China; E-Mails: (S.-G.W.); (X.J.)
| | - Xin Jiang
- Key Laboratory of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi 214122, China; E-Mails: (S.-G.W.); (X.J.)
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China; E-Mails: (P.-C.C.); (A.-G.Y.)
| | - Peng-Cheng Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China; E-Mails: (P.-C.C.); (A.-G.Y.)
| | - An-Guo Yu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China; E-Mails: (P.-C.C.); (A.-G.Y.)
| | - Xiao-Jun Huang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China; E-Mails: (P.-C.C.); (A.-G.Y.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-571-8795-2605; Fax: +86-571-8795-1773
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Zhu J, Sun G. Lipase immobilization on glutaraldehyde-activated nanofibrous membranes for improved enzyme stabilities and activities. REACT FUNCT POLYM 2012. [DOI: 10.1016/j.reactfunctpolym.2012.08.001] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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46
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Zhang XC, Xiong X, Yu J, Guo ZX. Amine-functionalized thermoplastic polyurethane electrospun fibers prepared by co-electrospinning with 3-aminopropyltriethoxysilane and preparation of conductive fiber mats. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Wu C, Zhou G, Jiang X, Ma J, Zhang H, Song H. Active biocatalysts based on Candida rugosa lipase immobilized in vesicular silica. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.03.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Song J, Kahveci D, Chen M, Guo Z, Xie E, Xu X, Besenbacher F, Dong M. Enhanced catalytic activity of lipase encapsulated in PCL nanofibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:6157-6162. [PMID: 22397625 DOI: 10.1021/la300469s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Use of biocatalysis for industrial synthetic chemistry is on the verge of significant growth. Enzyme immobilization as an effective strategy for improving the enzyme activity has emerged from developments especially in nanoscience and nanotechnology. Here, lipase from Burkholderia cepacia (LBC), as an example of the luxuriant enzymes, was successfully encapsulated in polycaprolactone (PCL) nanofibers, proven by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). Evaluated in both organic and aqueous medium, the activation factor of the encapsulated enzymes in the hydrolysis reaction was generally higher than that in the transesterification reaction. Enhanced catalytic activities were found when 5-20 w/w % of LBC was loaded. The effect of different solvents pretreatment on the activity of immobilized LBC was also investigated. The highest activation factor was found up to 14 for the sample containing acetone-treated LBC/PCL (10 w/w %). The encapsulated lipase reserved 50% of its original activity after the 10th run in the transesterification reaction in hexane medium. The mechanism of activation of lipase catalytic ability based on active PCL nanofiberous matrix is proposed.
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Affiliation(s)
- Jie Song
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus C DK-8000, Denmark
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50
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