1
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Monajati M, Tamaddon AM, Abolmaali SS, Yousefi G, Borandeh S, Dinarvand R. Enhanced L-asparaginase stability through immobilization in supramolecular nanogels of PEG-grafted poly HPMA with bis(α-cyclodextrin). Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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2
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Ariaeenejad S, Motamedi E, Hosseini Salekdeh G. Application of the immobilized enzyme on magnetic graphene oxide nano-carrier as a versatile bi-functional tool for efficient removal of dye from water. BIORESOURCE TECHNOLOGY 2021; 319:124228. [PMID: 33254455 DOI: 10.1016/j.biortech.2020.124228] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/28/2020] [Accepted: 10/04/2020] [Indexed: 06/12/2023]
Abstract
Herein, we report bi-functional applications of a novel immobilized enzyme on the modified magnetic graphene oxide (GO) for effective removal of dyes from water. The amine functionalized GO nano-carrier was covalently attached to a model enzyme (PersiManXyn1). The enzyme assays showed that the specific activities of the free and immobilized enzyme were 856.05 and 1141.1 µmolmin-1mg-1, respectively. While the free enzyme showed only 5% of its maximum activity, the immobilized PersiManXyn1 preserved more than 35% of its activity, at 90 °C. After four weeks storage, the free enzyme has been deactivated, but the immobilized enzyme retained 54% of its initial activity. The immobilized PersiManXyn1 was proficiently applied for dye removal from water using two strategies. While only pristine nano-carrier and free enzyme showed no considerable catalytic ability, the immobilized PersiManXyn1 could catalytically reduce the concentrated dye solutions within 150 s with superior reusability (94% dye removal after 15th cycle). Proficient treatment of a real textile effluent by the immobilized PersiManXyn1 approved its practical applications in the water remediation.
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Affiliation(s)
- Shohreh Ariaeenejad
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Elaheh Motamedi
- Department of Nanotechnology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Ghasem Hosseini Salekdeh
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran; Department of Molecular Sciences, Macquarie University, Sydney, NSW, Australia.
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3
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Fatty acid-peptide-bioconjugated micellar nanocarrier as a new delivery system for l-asparaginase: multi-criteria optimization, characterization, and pharmacokinetic study. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-020-04775-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Ariaeenejad S, Lanjanian H, Motamedi E, Kavousi K, Moosavi-Movahedi AA, Hosseini Salekdeh G. The Stabilizing Mechanism of Immobilized Metagenomic Xylanases on Bio-Based Hydrogels to Improve Utilization Performance: Computational and Functional Perspectives. Bioconjug Chem 2020; 31:2158-2171. [DOI: 10.1021/acs.bioconjchem.0c00361] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shohreh Ariaeenejad
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, 31359, Iran
| | - Hossein Lanjanian
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, 13145, Iran
| | - Elaheh Motamedi
- Department of Nanotechnology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, 31359, Iran
| | - Kaveh Kavousi
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, 13145, Iran
| | | | - Ghasem Hosseini Salekdeh
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, 31359, Iran
- Department of Molecular Sciences, Macquarie University, Sydney, 2109, New South Wales, Australia
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Stable cellulase immobilized on graphene oxide@CMC-g-poly(AMPS-co-AAm) hydrogel for enhanced enzymatic hydrolysis of lignocellulosic biomass. Carbohydr Polym 2019; 230:115661. [PMID: 31887893 DOI: 10.1016/j.carbpol.2019.115661] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 11/24/2022]
Abstract
This study indicated tailoring efficient polymer-enzyme bioconjugates with superb stability and activity for practical utilization of cellulase enzyme in hydrolyzing lignocellulosic biomass. To this goal, a dual crosslinking (DC) strategy was presented to synthesize novel 3D networks of carboxymethyl cellulose grafted copolymers of 2-acrylamido-2methyl propane sulfonate and acrylamide (CMC-g-poly(AMPS-co-AAm)) hydrogels. Graphene oxide (GO) nano-sheets were utilized as nano-filler and physical cross-linker making H-bondings between polymeric chains to prepare GO@CMC-g-poly(AMPS-co-AAm) networks. The GO content effects on the performance of as-synthesized architectures in conjugation to a model enzyme (PersiCel1) were examined. PersiCel1 immobilization on the GO reinforced hydrogels resulted in noticeable retaining near 60 % of its maximum activity at 90 °C, along with the remarkable enhancement of its specific activity and storage stability. Compared with the free PersiCel1, the immobilized enzyme on the GO containing hydrogels showed 154.8 % increase in conversion of alkalin-treated sugar beet pulp, while the PersiCel1/neat-Hydrogel indicated an increment of 66.7 %, under the same conditions.
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Alam S, Ahmad R, Pranaw K, Mishra P, Khare SK. Asparaginase conjugated magnetic nanoparticles used for reducing acrylamide formation in food model system. BIORESOURCE TECHNOLOGY 2018; 269:121-126. [PMID: 30157443 DOI: 10.1016/j.biortech.2018.08.095] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
Acrylamide is a potent carcinogen and neurotoxin formed by the Maillard reaction when l-asparagine reacts with starch at high temperature. It is formed in food materials mainly deep fried and bakery products. Enzymatic pretreatment of these food products with asparaginase enzyme leads to reduction in acrylamide. However, enzymatic process is quite expensive due to high cost, low catalytic efficiency as well as problem with enzyme reusability. Present work deals with these problems by exploring l-asparaginase from Bacillus aryabhattai. Asparaginase enzyme was immobilized on APTES modified magnetic nanoparticles. It was found to be more than three-fold increase their thermal stability from free enzyme and retained 90% activity after fifth cycle. The immobilized enzyme also showed better affinity towards its substrate. During pretreatment of asparagine in a starch-asparagine food model system and it was clearly demonstrated that asparaginase nanoconjugates had reduced the formation of acrylamide by more than 90% within 30 min.
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Affiliation(s)
- Shahenvaz Alam
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | - Razi Ahmad
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | - Kumar Pranaw
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | - Prashant Mishra
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
| | - Sunil Kumar Khare
- Enzyme and Microbial Biochemistry Laboratory, Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India.
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7
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Regulation of enzyme activity and stability through positional interaction with polyurethane nanofibers. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2017.02.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Mohy Eldin MS, El-Aassar MR, El. Zatahry AA, Al-Sabah MMB. Covalent Immobilization of β-Galactosidase onto Amino-Functionalized Polyvinyl Chloride Microspheres: Enzyme Immobilization and Characterization. ADVANCES IN POLYMER TECHNOLOGY 2013. [DOI: 10.1002/adv.21379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- M. S. Mohy Eldin
- Polymer Materials Research Department; Advanced Technology and New Materials Research Institute; City for Scientific Research and Technology Applications; New Borg El-Arab City 21934 Alexandria Egypt
| | - M. R. El-Aassar
- Polymer Materials Research Department; Advanced Technology and New Materials Research Institute; City for Scientific Research and Technology Applications; New Borg El-Arab City 21934 Alexandria Egypt
| | - A. A. El. Zatahry
- Polymer Materials Research Department; Advanced Technology and New Materials Research Institute; City for Scientific Research and Technology Applications; New Borg El-Arab City 21934 Alexandria Egypt
| | - M. M. B. Al-Sabah
- Department of Chemistry; Faculty of Science, Al-Azhar University; Cairo Egypt
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Sadik T, Massardier V, Becquart F, Taha M. Radical grafting of polar monomers onto polypropylene by reactive extrusion. J Appl Polym Sci 2013. [DOI: 10.1002/app.38942] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Mohy Eldin MS, El Enshasy HA, Hassan ME, Haroun B, Hassan EA. Covalent immobilization of penicillin G acylase onto amine-functionalized PVC membranes for 6-APA production from penicillin hydrolysis process. II. Enzyme immobilization and characterization. J Appl Polym Sci 2012. [DOI: 10.1002/app.36690] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Mohy Eldin MS, Elaassar MR, Elzatahry AA, Al-Sabah MMB, Hassan EA. Covalent immobilization of β-galactosidase onto amino-functionalized PVC microspheres. J Appl Polym Sci 2012. [DOI: 10.1002/app.35682] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Eldin MSM, El Enshasy HA, El Sayed M, El Sayed S, Haroun B, Hassan EA. Covalent immobilization of penicillin G acylase onto chemically activated surface of poly(vinyl chloride) membranes for 6-penicillic acid production from penicillin hydrolysis process I. Optimization of surface modification and its characterization. J Appl Polym Sci 2011. [DOI: 10.1002/app.35390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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Adikane HV, Thakar DM. Studies of Penicillin G Acylase Immobilization Using Highly Porous Cellulose-Based Polymeric Membrane. Appl Biochem Biotechnol 2009; 160:1130-45. [DOI: 10.1007/s12010-009-8686-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2008] [Accepted: 05/25/2009] [Indexed: 10/20/2022]
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15
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Wang P, Hu X, Cook S, Hwang HM. Influence of silica-derived nano-supporters on cellobiase after immobilization. Appl Biochem Biotechnol 2008; 158:88-96. [PMID: 18679593 DOI: 10.1007/s12010-008-8321-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2008] [Accepted: 07/14/2008] [Indexed: 10/21/2022]
Abstract
Core shell magnetite nanoparticle (CSMN) was successfully synthesized with diameter around 125 nm according to the determination with scanning electronic microscopy. SBA-15 with diameter around 31 nm was synthesized in our previous work as another supporter for immobilized degradation enzymes. The aim of this study was to investigate the influence of silica-derived nano-supporters on cellobiase after immobilization. With covalent method, glutaraldehyde was introduced to immobilize cellobiase. The immobilized enzyme efficiency, specific activity, and its characterization, including optimum pH, pH stability, optimum temperature for enzyme reaction, and enzyme thermal stability were investigated. Results show that the method of enzyme immobilization on both nano-supporters could improve cellobiase stability under low pH and high temperature conditions compared with the free enzyme. In the aspect of immobilization efficiency, SBA had higher amount of bounded protein than that of CSMN, but had lower specific enzyme activity than CSMN, assumably due to the change in silica surface properties caused by process of supporter synthesis.
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Affiliation(s)
- Peng Wang
- Biology Department, Jackson State University, Jackson, MS 39217, USA
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16
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Yucel D, Ozer N, Hasirci V. Construction of a choline biosensor through enzyme immobilization on a poly(2-hydroxyethyl methacrylate)-grafted Teflon film. J Appl Polym Sci 2007. [DOI: 10.1002/app.26124] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Hu MX, Yang Q, Xu ZK. Enhancing the hydrophilicity of polypropylene microporous membranes by the grafting of 2-hydroxyethyl methacrylate via a synergistic effect of photoinitiators. J Memb Sci 2006. [DOI: 10.1016/j.memsci.2006.08.023] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Cano À, Minguillón C, Palet C. Immobilization of endo-1,4-β-xylanase on polysulfone acrylate membranes: Synthesis and characterization. J Memb Sci 2006. [DOI: 10.1016/j.memsci.2006.01.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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19
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Sarbu A, de Pinho MN, Freixo MDR, Goncalves F, Udrea I. New method for the covalent immobilization of a xylanase by radical grafting of acrylamide on cellulose acetate membranes. Enzyme Microb Technol 2006. [DOI: 10.1016/j.enzmictec.2005.10.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Dayal R, Godjevargova T. Polyacrylonitrile Enzyme Ultrafiltration and Polyamide Enzyme Microfiltration Membranes Prepared by Diffusion and Convection. Macromol Biosci 2005; 5:222-8. [PMID: 15768441 DOI: 10.1002/mabi.200400132] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Glucose oxidase (GOD) and catalase (CAT) were covalently immobilized onto three types of polyacrylonitrile (PAN 1, PAN 2, and PAN 3) ultrafiltration (UF) membranes with different pore sizes and one type of polyamide (PA) microfiltration (MF) membrane by the bifunctional reagent, glutaraldehyde. The initial membranes were pre-modified to generate active amide groups in the PAN membranes and active amino groups in the PA membranes. The PAN 3 membrane contained the highest amount of active groups, and the membrane PA the lowest. The modified membranes were enzyme-loaded by diffusion and convection (UF). The effect of membrane pore size and immobilization methods on enzymatic activity and bound protein were studied. The most effective immobilized system was prepared by diffusion using a PAN 3 membrane as a carrier (bound protein: 0.055 mg/cm(2), relative activity: 87.6%). This membrane had the highest pore size of all the PAN membranes. Despite the highest pore size of PA membrane, the enzyme PA membranes prepared by diffusion showed the lowest amount of bound protein (0.03 mg/cm(2)) and the lowest relative activity (35.38%). This correlates with the lowest amount of active groups found in these membranes. The relative activity was higher for all the enzyme systems loaded by diffusion. The systems prepared by convection of the enzyme solution contained higher amounts of enzymes (0.035-0.13 mg/cm(2) protein), which led to internal substrate diffusion resistance and a decrease in the GOD relative activity (21.55-68.5%) in these systems. The kinetic parameters (V(max) and K(m)) and the glucose conversion of the immobilized systems prepared by diffusion were also studied. [diagram in text].
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Affiliation(s)
- Rajeshwar Dayal
- Department of Biotechnology, University, "Prof. Dr. Assen Zlatarov", Prof. Yakimov Street 1, Bourgas 8010, Bulgaria
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Portaccio M, De Luca P, Durante D, Grano V, Rossi S, Bencivenga U, Lepore M, Mita DG. Modulation of the catalytic activity of free and immobilized peroxidase by extremely low frequency electromagnetic fields: dependence on frequency. Bioelectromagnetics 2005; 26:145-52. [PMID: 15672368 DOI: 10.1002/bem.20059] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A study of the influence of electromagnetic fields (EMF) of various frequencies, from 50 up to 400 Hz, on the catalytic activity of soluble and insoluble horseradish peroxidase (POD) was carried out. To simulate the conditions in which the enzyme operates in vivo, the POD was immobilized by entrapment on a gelatin membrane or by covalent attachment on a nylon graft membrane. The rate of inactivation of the soluble POD was found to exhibit positive and negative interactions with the 1 mT applied magnetic field, with an optimum positive effect at 130 Hz. The immobilized PODs, on the contrary, do not exhibit negative interactions, but show a maximum positive interaction at 150 Hz when entrapped and at 170 Hz when covalently attached. At 50 Hz and at frequencies higher than 250 Hz no effects were observed with insoluble POD. The optimum frequency of positive interaction between the EMF and the catalytic activity of the insoluble enzymes is shifted with respect to that of the soluble enzymes towards higher frequencies, the size of the shifts being dependent on the intensity of the physical forces involved in the immobilization process.
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Affiliation(s)
- M Portaccio
- Department of Experimental Medicine, Faculty of Medicine and Surgery, Second University of Naples, Naples, Italy
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22
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Portaccio M, De Luca P, Durante D, Rossi S, Bencivenga U, Canciglia P, Lepore M, Mattei A, De Maio A, Mita DG. In vitro studies of the influence of ELF electromagnetic fields on the activity of soluble and insoluble peroxidase. Bioelectromagnetics 2003; 24:449-56. [PMID: 12955749 DOI: 10.1002/bem.10119] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The influence of an extremely low frequency (ELF) magnetic field (50 Hz and 1 mT, EMF) on the activity of a soluble and insoluble horseradish peroxidase (E.C. 1.11.17) has been studied as a function of time. Insoluble derivatives were obtained by enzyme entrapment into two different gelatin membranes or by covalent attachment of the enzyme on two nylon membranes, differently preactivated. Results have shown that the field affects the inactivation rate of the soluble enzyme, while no effects are observed with insoluble derivatives. Since in vivo enzymes are immobilised into the biomembrane bilayer or entrapped into the cytoplasmic mixture, one might speculate that our experimental conditions do not reflect the catalytic activity of the enzymes in vivo.
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Affiliation(s)
- M Portaccio
- Department of Experimental Medicine, Faculty of Medicine and Surgery, Second University of Naples, Naples, Italy
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El-Masry M, De Maio A, Martelli P, Casadio R, Moustafa A, Rossi S, Mita D. Influence of the immobilization process on the activity of β-galactosidase bound to Nylon membranes grafted with glycidyl methacrylate. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s1381-1177(01)00061-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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El-Masry MM, De Maio A, Portaccio M, Di Martino S, Bencivenga U, Rossi S, Gaeta FS, Mita DG. Isothermal and non-isothermal characterization of catalytic nylon membranes chemically grafted: dependence on the grafting percentage. Enzyme Microb Technol 2001; 28:773-784. [PMID: 11397458 DOI: 10.1016/s0141-0229(01)00333-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The behaviour of five different hydrophobic beta-galactosidase derivatives, obtained by grafting different amount of butylmethacrylate (BMA) on planar nylon membranes, has been studied under isothermal and non-isothermal conditions.Under isothermal conditions the effect of the grafting percentage on the enzyme activity has been studied as a function of pH, temperature and substrate concentration. Independently from the parameters under observation, the yield of the catalytic process reaches the maximum value at a grafting percentage value equal to 21%. The apparent K(m) values result linearly increasing with the increase of the grafting percentage, while the apparent V(max) exhibits a maximum value.Under non-isothermal conditions, a decrease of the apparent K(m) values and increase of the apparent V(max) has been found in respect to the same values obtained under isothermal conditions.The percentage activity increases induced by the presence of a temperature gradient have been found to decrease with the increase of the percentage of graft BMA.A parameter correlating the percentage increase of enzyme activity under non-isothermal conditions with the hydrophobicity of the catalytic membrane has also been identified. This parameter is the ratio between thermoosmotic and hydraulic permeability.Results have been discussed in terms of reduction of diffusion limitations for substrate and products movement towards or away from the catalytic site by the process of thermodialysis.The usefulness of using non-isothermal bioreactors in industrial biotechnological processes has been confirmed.
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Affiliation(s)
- M M. El-Masry
- International Institute of Genetics and Biophysics of CNR, Via G. Marconi, 12-80125, Naples, Italy
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El-Masry M, De Maio A, Di Martino S, Bencivenga U, Rossi S, Manzo B, Pagliuca N, Canciglia P, Portaccio M, Gaeta F, Mita D. Modulation of immobilized enzyme activity by altering the hydrophobicity of nylon-grafted membranes. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1381-1177(99)00099-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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El-Masry M, De Maio A, Di Martino S, Diano N, Bencivenga U, Rossi S, Grano V, Canciglia P, Portaccio M, Gaeta F, Mita D. Modulation of immobilized enzyme activity by altering the hydrophobicity of nylon-grafted membranes. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1381-1177(99)00100-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Non-isothermal cephalexin hydrolysis by penicillin G acylase immobilized on grafted nylon membranes. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1381-1177(99)00060-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Mohy Eldin M, Bencivenga U, Rossi S, Canciglia P, Gaeta F, Tramper J, Mita D. Characterization of the activity of penicillin G acylase immobilized onto nylon membranes grafted with different acrylic monomers by means of γ-radiation. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1381-1177(99)00061-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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