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Sami N, Afzal B, Yasin D, Fatma T. Biochemical Characterization of Laccase from Spirulina CPCC-695 and Their Role in Estrone Degradation. Protein J 2024; 43:115-128. [PMID: 38127183 DOI: 10.1007/s10930-023-10169-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/13/2023] [Indexed: 12/23/2023]
Abstract
The addition of exogenous endocrine disrupting compounds (EDCs) like estrone, in the food chain through the aquatic system, disrupts steroid biosynthesis and metabolism by altering either the genomic or non-genomic pathway that eventually results in various diseases. Thus, bioremediation of these compounds is urgently required to prevent their addition and persistence in the environment. Enzymatic degradation has proven to be a knight in shining armour as it is safe and generates no toxic products. The multicopper oxidases (E.C. 1.10.3.2 benzenediol: oxygen oxidoreductase), laccase with the potential to degrade both phenolic and non-phenolic substrates has recently gained attention. In this study, the laccase was purified, characterized, and used to study estrone degradation. The culture filtrate (crude laccase) was concentrated and precipitated using cold-acetone and dialyzed against tris buffer (50 mM) giving a four-fold partially purified form, with 45.56% yield and 204.14 U/mg as specific activity and a single peak at 250-300 nm. The partially purified laccase was approximately 80 kDa as estimated by SDS-PAGE preferred ABTS as substrate. Both crude and partially purified laccase showed maximum activity at pH 3.0, 40 °C, and 4 mM ABTS. Kinetic constants (Km, Vmax) of crude and partially purified laccase were found to be 0.83 mM; 494.31 mM/min, and 0.58 mM; 480.54 mM/min respectively. Iron sulphate and sodium azide inhibited laccase maximally. Crude and partially purified laccase degradation efficiency was 87.55 and 91.35% respectively. Spirulina CPCC-695 laccase with efficient estrone degradation ability renders them promising candidates for EDCs bioremediation.
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Affiliation(s)
- Neha Sami
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Bushra Afzal
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Durdana Yasin
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Tasneem Fatma
- Cyanobacterial Biotechnology Laboratory, Department of Biosciences, Jamia Millia Islamia, New Delhi, India.
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2
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Laccase multi-point covalent immobilization: characterization, kinetics, and its hydrophobicity applications. Appl Microbiol Biotechnol 2023; 107:719-733. [PMID: 36602562 DOI: 10.1007/s00253-022-12352-9] [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: 10/26/2022] [Revised: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 01/06/2023]
Abstract
Laccase from Myceliophthora thermophila was immobilized using one-point and multi-point covalent attachment on both a native and a modified new commercial epoxy carrier (Immobead 150P). After 10 cycles of operation at pH 3.0 and temperature 70 °C, the multi-point covalently immobilized laccase on the modified Immobead 150P performed best in terms of immobilization characteristics, retaining 95% of its initial activity. Thermodynamic parameters of thermal inactivation emphasized the positive impact of the immobilization procedure. At 50 °C, the immobilized and free enzyme activity levels dropped by 27 and 73%, respectively, after 48 h of incubation. The immobilized enzyme enhanced its stability in alkaline conditions, resuming 95% of its original activity after 3 h at pH 9.0. Immobilization reduced substrate affinity because the free laccase's Km value was lower than that of the immobilized laccase. Finally, the application of immobilized laccase in an innovative wood treatment process was tested by grafting lauryl gallate (LG) in order to provide hydrophobic properties to the wood. The results showed a relative water contact angle of 85.7% for treated wood, whereas the control showed only 26.6%, after 4 min of contact between water and beechwood surface. KEY POINTS: • Multi-point covalent immobilization of a commercial laccase on a commercial support. • Enzymatic parameters generally improved by immobilization process. • New application of immobilized laccase: enzymatic-assisted wood hydrophobization.
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Kyomuhimbo HD, Brink HG. Applications and immobilization strategies of the copper-centred laccase enzyme; a review. Heliyon 2023; 9:e13156. [PMID: 36747551 PMCID: PMC9898315 DOI: 10.1016/j.heliyon.2023.e13156] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023] Open
Abstract
Laccase is a multi-copper enzyme widely expressed in fungi, higher plants, and bacteria which facilitates the direct reduction of molecular oxygen to water (without hydrogen peroxide production) accompanied by the oxidation of an electron donor. Laccase has attracted attention in biotechnological applications due to its non-specificity and use of molecular oxygen as secondary substrate. This review discusses different applications of laccase in various sectors of food, paper and pulp, waste water treatment, pharmaceuticals, sensors, and fuel cells. Despite the many advantages of laccase, challenges such as high cost due to its non-reusability, instability in harsh environmental conditions, and proteolysis are often encountered in its application. One of the approaches used to minimize these challenges is immobilization. The various methods used to immobilize laccase and the different supports used are further extensively discussed in this review.
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Affiliation(s)
- Hilda Dinah Kyomuhimbo
- Water Utilisation and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, South Africa
| | - Hendrik G. Brink
- Water Utilisation and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, South Africa
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Deng J, Wang H, Zhan H, Wu C, Huang Y, Yang B, Mosa A, Ling W. Catalyzed degradation of polycyclic aromatic hydrocarbons by recoverable magnetic chitosan immobilized laccase from Trametes versicolor. CHEMOSPHERE 2022; 301:134753. [PMID: 35490752 DOI: 10.1016/j.chemosphere.2022.134753] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 04/18/2022] [Accepted: 04/24/2022] [Indexed: 06/14/2023]
Abstract
The capability of laccase to oxidate a broad range of polyphenols and aromatic substrates in vitro offers a new technological option for the remediation of polycyclic aromatic hydrocarbon (PAH) pollution with high cytotoxicity. However, laccase application in the remediation of PAH-contaminated sites mainly suffers from a low oxidation rate and high cost because of the difficulty in its recovery. In this study, laccases were immobilized on magnetic Fe3O4 particles coated with chitosan (Fe3O4@SiO2-chitosan) to improve the operational stability and reusability in the treatment of PAH pollution. The enzyme fixation capacity reached 158 mg g-1, and 79.1% of free laccase activities were reserved under the optimum immobilized condition of 4% glutaraldehyde, 1.0 mg mL-1 laccase, 2 h covalent bonding time, and 6 h fixation time. The degradation efficiencies of anthracene (ANT) and benzo[a]pyrene (B(a)P) by Fe3O4@SiO2-chitosan immobilized laccase in 48 h were 81.9% and 69.2%, respectively. Furthermore, it is very easy to magnetically recover the immobilized laccase from reaction systems and reuse it in a new batch. The relative activities of immobilized laccase were over 50% for the degradation of ANT and B(a)P in three catalytic runs, reaching the goal of substantially reducing cost in practice. According to the results from quantum calculations and mass spectrum analyses, the degradation products of ANT and B(a)P by laccase were anthraquinone and B(a)P-dione, respectively. The findings from this study provide valuable insight in promoting the application of immobilized laccase technology in the remediation of PAH contamination.
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Affiliation(s)
- Jibao Deng
- Institute of Organic Contaminant Control and Soil Remediation, College of Resource and Environmental Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Hefei Wang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resource and Environmental Science, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Haisheng Zhan
- Institute of Organic Contaminant Control and Soil Remediation, College of Resource and Environmental Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Chenxi Wu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resource and Environmental Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yi Huang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resource and Environmental Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Bing Yang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resource and Environmental Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Ahmed Mosa
- Soils Department, Faculty of Agriculture, Mansoura University, 35516 Mansoura, Egypt
| | - Wanting Ling
- Institute of Organic Contaminant Control and Soil Remediation, College of Resource and Environmental Science, Nanjing Agricultural University, Nanjing 210095, PR China
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The Impact of the Functional Layer Composition of Glucose Test-Strips on the Stability of Electrochemical Response. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10080298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Herein, the impact of the chemical stability of RedOx mediator ferricyanide, K3[Fe(CN)6] (FC), a type of buffer solution used for bioreceptor preparation, gel composition (carboxymethylcellulose, CMC, Aerosile, AS, and alginate, ALG) on the long term stability of glucose test-strips and their analytical performance was examined. By simple addition of ALG to the functional gel aiming to improve its viscosity, we managed to enhance the sensitivity of conventional CMC-containing amperometric glucose test-strips from 3.3 µA/mM to 3.9 µA/mM and extend their shelf life from 8 months to 1.7 years. Moreover, during the course of investigations, it was revealed that the activity of enzyme in dependence with the used buffer did not linearly correlate with its activity in a dried functional layer, and the entire long-term electrochemical signal of glucose test-strips was determined by RedOx mediator FC chemical stability. The most stable and sensitive test-strips were obtained by the screen-printing approach from a gel containing 24 mg/mL GOx prepared in citrate buffer with pH 6, 200 mg/mL of FC and 10 mg/mL of CMC supplemented with 25 mg/mL of ALG.
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Ranimol G, Paul C, Sunkar S. Optimization and efficacy studies of Laccase immobilized on Zein-Polyvinyl pyrrolidone nano fibrous membrane in decolorization of Acid Red 1. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:2703-2717. [PMID: 34850688 DOI: 10.2166/wst.2021.200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Azo dyes are widely used in textile industries. A significant portion of these recalcitrant dyes are being discharged to the natural waters. Due to their low biodegradability they pose serious pollution problems if untreated. In this work, decolourization studies of Acid Red 1 (AR1) by laccase enzyme immobilized onto zein-polyvinyl pyrrolidone (PVP) composite nanofiber is done. The nanofibers were characterized by scanning electron microscopy (SEM) and Fourier-transform infrared (FTIR) analysis. pH and temperature profiles of immobilized enzyme were found to be broader than its free counterpart. The Km value was found to be 0.243 mM for free laccase and 0.958 mM for immobilized laccase. Similarly, Vmax for the free enzyme was 3.572 U/mg compared to 2.48 U/mg of immobilized laccase. The relative activity of immobilized laccase was 64.91% after storage for 30 days at room temperature while it was 28.64% for free laccase. The temperature and pH for AR 1 decolorization were optimized and was found to be 60 °C and 5, respectively. Also, decolorization percentage was found to be 91.67% for immobilized laccase and 72.03% of free laccase in the presence of natural mediators like vanillin. From phytotoxicity studies it was found that the germination rate, shoot and root length was increased compared to untreated dye. Therefore, zein-PVP nanofiber immobilized laccase could be an ideal candidate for the textile dye decolorization.
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Affiliation(s)
- G Ranimol
- Department of Bioinformatics, Center of Molecular Datascience and Systems Biology, Sathyabama Institute of Science and Technology, Rajiv Gandhi Salai, OMR, Sholinganallur, Chennai 600119, India E-mail: ; Department of Biotechnology, Sahrdaya College of Engineering and Technology, Kodakara, Kerala 680684, India
| | - Chinju Paul
- Department of Biotechnology, Sahrdaya College of Engineering and Technology, Kodakara, Kerala 680684, India
| | - Swetha Sunkar
- Department of Bioinformatics, Center of Molecular Datascience and Systems Biology, Sathyabama Institute of Science and Technology, Rajiv Gandhi Salai, OMR, Sholinganallur, Chennai 600119, India E-mail:
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Kinetic and thermodynamic study of laccase cross-linked onto glyoxyl Immobead 150P carrier: Characterization and application for beechwood biografting. Enzyme Microb Technol 2021; 150:109865. [PMID: 34489024 DOI: 10.1016/j.enzmictec.2021.109865] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/23/2021] [Accepted: 06/28/2021] [Indexed: 12/15/2022]
Abstract
In this study, we cross-linked aminated Thermothelomyces thermophilus laccase onto Immobead 150P epoxy carrier, and achieved an immobilization yield of 99.84 %. The optimum temperature and pH values for the oxidation of ABTS by laccase were determined to be 70 °C and pH 3.0. After 6 h at 50 °C, laccase activity was diminished by about 13 % in the free form and 28 %, in the immobilized form. Km values for both free and cross-linked laccase were 0.051 and 0.567 mM, whereas Vmax values were 2.027 and 0.854 μmol. min-1, respectively. The immobilized laccase was able to preserve its full activity for 6 weeks, retaining approximately 95 % and 78 % of its initial activity after 8 and 20 weeks, respectively. The contact angles were two-fold higher when the laccase enzyme was occupied in the biografting reaction, revealing that the hydrophobic compound bonded stably onto beechwood samples.
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8
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Flow Control in Porous Media: From Numerical Analysis to Quantitative μPAD for Ionic Strength Measurements. SENSORS 2021; 21:s21103328. [PMID: 34064828 PMCID: PMC8150341 DOI: 10.3390/s21103328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/03/2021] [Accepted: 05/06/2021] [Indexed: 12/05/2022]
Abstract
Microfluidic paper-based analytical devices (µPADs) are a promising technology to enable accurate and quantitative in situ assays. Paper’s inherent hydrophilicity drives the fluids without the need for external pressure sources. However, controlling the flow in the porous medium has remained a challenge. This study addresses this problem from the nature of the paper substrate and its design. A computational fluid dynamic model has been developed, which couples the characteristics of the porous media (fiber length, fiber diameter and porosity) to the fluidic performance of the diffusion-based µPAD sensor. The numerical results showed that for a given porous membrane, the diffusion, and therefore the sensor performance is affected not only by the substrate nature but also by the inlets’ orientation. Given a porous substrate, the optimum performance is achieved by the lowest inlets’ angle. A diffusion-based self-referencing colorimetric sensor was built and validated according to the design. The device is able to quantify the hydronium concentration in wines by comparison to 0.1–1.0 M tartaric acid solutions with a 41.3 mM limit of detection. This research showed that by proper adjustments even the simplest µPADs can be used in quantitative assays for agri-food applications.
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9
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Jafry AT, Lim H, Lee J. Basic Paper-Based Microfluidics/Electronics Theory. Bioanalysis 2021. [DOI: 10.1007/978-981-15-8723-8_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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10
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Yushkova ED, Nazarova EA, Matyuhina AV, Noskova AO, Shavronskaya DO, Vinogradov VV, Skvortsova NN, Krivoshapkina EF. Application of Immobilized Enzymes in Food Industry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:11553-11567. [PMID: 31553885 DOI: 10.1021/acs.jafc.9b04385] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Enzymes are macromolecular biocatalysts, widely used in food industry. In applications, enzymes are often immobilized on inert and insoluble carriers, which increase their efficiency due to multiple reusability. The properties of immobilized enzymes depend on the immobilization method and the carrier type. The choice of the carrier usually concerns the biocompatibility, chemical and thermal stability, insolubility under reaction conditions, capability of easy regeneration and reusability, as well as cost efficiency. In this review, we provide an overview of various carriers for enzyme immobilization, with the primary focus on food industry.
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Affiliation(s)
- Ekaterina D Yushkova
- ITMO University , Lomonosova Street 9 , 191002 St. Petersburg , Russian Federation
| | - Elena A Nazarova
- ITMO University , Lomonosova Street 9 , 191002 St. Petersburg , Russian Federation
| | - Anna V Matyuhina
- ITMO University , Lomonosova Street 9 , 191002 St. Petersburg , Russian Federation
| | - Alina O Noskova
- ITMO University , Lomonosova Street 9 , 191002 St. Petersburg , Russian Federation
| | - Darya O Shavronskaya
- ITMO University , Lomonosova Street 9 , 191002 St. Petersburg , Russian Federation
| | | | - Natalia N Skvortsova
- ITMO University , Lomonosova Street 9 , 191002 St. Petersburg , Russian Federation
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11
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Flores EEE, Cardoso FD, Siqueira LB, Ricardi NC, Costa TH, Rodrigues RC, Klein MP, Hertz PF. Influence of reaction parameters in the polymerization between genipin and chitosan for enzyme immobilization. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.06.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Ma HF, Meng G, Cui BK, Si J, Dai YC. Chitosan crosslinked with genipin as supporting matrix for biodegradation of synthetic dyes: Laccase immobilization and characterization. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.02.008] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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13
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The combined effects of lysozyme and ascorbic acid on microstructure and properties of zein-based films. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2017.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Akyazi T, Basabe-Desmonts L, Benito-Lopez F. Review on microfluidic paper-based analytical devices towards commercialisation. Anal Chim Acta 2018; 1001:1-17. [DOI: 10.1016/j.aca.2017.11.010] [Citation(s) in RCA: 311] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/23/2017] [Accepted: 11/03/2017] [Indexed: 12/20/2022]
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15
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Contreras CB, Toselli R, Strumia MC. Atom Transfer Radical Polymerization Functionalization on Polypropylene Films for Immobilizing Active Compounds. Aust J Chem 2018. [DOI: 10.1071/ch18140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This work proposes the surface chemical modification of polypropylene films (PP) by atom transfer radical polymerization (ATRP) using glycidyl methacrylate (GMA) as the graft monomer. At a later stage, the epoxy groups of PP-g-PGMA were used for covalent binding of glucose oxidase (GOD) to obtain an active material (PP-g-PGMA-GOD) with 9.38 ± 0.06 mg cm−2 of enzyme bonded on the surface of PP. Preliminary microbiological studies have shown that this methodology of covalent binding of the enzyme onto the PP surface allowed its activity to be maintained. Therefore, this advantage would give to PP-g-PGMA-GOD films a potential use as an active packaging material if further specific studies on their antimicrobial properties can be verified.
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16
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Electrochemical Measurements of Glucose Using a Micro Flow-Through Immobilized Enzyme Reactor. ELECTROANAL 2017. [DOI: 10.1002/elan.201700038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Alarcón-Payán DA, Koyani RD, Vazquez-Duhalt R. Chitosan-based biocatalytic nanoparticles for pollutant removal from wastewater. Enzyme Microb Technol 2017; 100:71-78. [DOI: 10.1016/j.enzmictec.2017.02.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 02/16/2017] [Accepted: 02/16/2017] [Indexed: 12/16/2022]
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18
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Li G, Nandgaonkar AG, Wang Q, Zhang J, Krause WE, Wei Q, Lucia LA. Laccase-immobilized bacterial cellulose/TiO2 functionalized composite membranes: Evaluation for photo- and bio-catalytic dye degradation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.10.033] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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19
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Fernandez-Lopez L, Virgen-OrtÍz JJ, Pedrero SG, Lopez-Carrobles N, Gorines BC, Otero C, Fernandez-Lafuente R. Optimization of the coating of octyl-CALB with ionic polymers to improve stability and decrease enzyme leakage. BIOCATAL BIOTRANSFOR 2017. [DOI: 10.1080/10242422.2016.1278212] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Jose J. Virgen-OrtÍz
- Catedrático CONACYT – Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD) – Centro de Innovación y Desarrollo Agroalimentario de Michoacán, A.C. (CIDAM), Morelia, Michoacán, Mexico
| | - Sara G. Pedrero
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Madrid, Spain and
| | | | - Beatriz C. Gorines
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Madrid, Spain and
| | - Cristina Otero
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Madrid, Spain and
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Virgen-Ortíz JJ, dos Santos JCS, Berenguer-Murcia Á, Barbosa O, Rodrigues RC, Fernandez-Lafuente R. Polyethylenimine: a very useful ionic polymer in the design of immobilized enzyme biocatalysts. J Mater Chem B 2017; 5:7461-7490. [DOI: 10.1039/c7tb01639e] [Citation(s) in RCA: 172] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review discusses the possible roles of polyethylenimine (PEI) in the design of improved immobilized biocatalysts from diverse perspectives.
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Affiliation(s)
- Jose J. Virgen-Ortíz
- CONACYT-Centro de Investigación en Alimentación y Desarrollo
- A.C. (CIAD)-Consorcio CIDAM
- 58341 Morelia
- Mexico
| | - José C. S. dos Santos
- Instituto de Engenharias e Desenvolvimento Sustentável
- Universidade da Integração Internacional da Lusofonia Afro-Brasileira
- Acarape
- Brazil
| | - Ángel Berenguer-Murcia
- Instituto Universitario de Materiales
- Departamento de Química Inorgánica
- Universidad de Alicante
- Campus de San Vicente del Raspeig
- Ap. 99-03080 Alicante
| | - Oveimar Barbosa
- Departamento de Química
- Facultad de Ciencias
- Universidad del Tolima
- Ibagué
- Colombia
| | - Rafael C. Rodrigues
- Biocatalysis and Enzyme Technology Lab
- Institute of Food Science and Technology
- Federal University of Rio Grande do Sul
- Av. Bento Gonçalves
- Porto Alegre
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21
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Koyani RD, Vazquez-Duhalt R. Laccase encapsulation in chitosan nanoparticles enhances the protein stability against microbial degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:18850-18857. [PMID: 27318485 DOI: 10.1007/s11356-016-7072-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 06/13/2016] [Indexed: 06/06/2023]
Abstract
A novel concept with the result of enzyme stabilization against microbial degradation in real bioremediation processes was developed through the encapsulation of laccase in chitosan nanoparticles. Besides of abundant information on laccase-chitosan conjugates, we report the laccase encapsulation into nanoparticles based in chitosan. The chitosan-tripolyphosphate technique was applied for the production of morphologically homogeneous enzymatic nanoparticles, with high enzyme encapsulation efficiency, small asymmetric sizes (from 40 to 90 nm), and rough surfaces. Contrary to macroscopic immobilized enzymes, temperature and pH activity profiles of nano-sized laccase were similar to those of free enzyme. The substrate affinity constant (K M) of nano-encapsulated laccase was similar to these from free enzyme, while its activity rate constant (k cat) represented 60 % of these obtained with free enzyme. Importantly, stability of nano-encapsulated laccase against microbial degradation in soil, compost, and wastewater was significantly increased. After 24 h exposure to wastewater from a treatment plant, the laccase activity of the nanoparticles was 82.8 % of initial activity, compared with only 7.8 % retained activity for free enzyme. After 36 h incubation in compost extract, the laccase nanoparticles showed 72.4 % of the initial activity, while the free enzyme was almost completely inactivated. Finally, after 84 h incubation in soil extract, the nanoparticles and free preparations showed 57.9 and 17.3 % of the initial activity, respectively. Thus, the nanoencapsulation of enzymes able to transform pollutants is an alternative to improve the operational lifetime of enzymes in real environmental applications.
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Affiliation(s)
- Rina D Koyani
- Department of Bionanotechnology, Centro de Nanociencias y Nanotecnologia, Universidad Nacional Autónoma de México, Km 107 carretera Tijuana-Ensenada, Ensenada, Baja California, 22860, Mexico
| | - Rafael Vazquez-Duhalt
- Department of Bionanotechnology, Centro de Nanociencias y Nanotecnologia, Universidad Nacional Autónoma de México, Km 107 carretera Tijuana-Ensenada, Ensenada, Baja California, 22860, Mexico.
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Peirce S, Tacias-Pascacio VG, Russo ME, Marzocchella A, Virgen-Ortíz JJ, Fernandez-Lafuente R. Stabilization of Candida antarctica Lipase B (CALB) Immobilized on Octyl Agarose by Treatment with Polyethyleneimine (PEI). Molecules 2016; 21:molecules21060751. [PMID: 27338317 PMCID: PMC6274192 DOI: 10.3390/molecules21060751] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/01/2016] [Accepted: 06/06/2016] [Indexed: 01/18/2023] Open
Abstract
Lipase B from Candida antarctica (CALB) was immobilized on octyl agarose (OC) and physically modified with polyethyleneimine (PEI) in order to confer a strong ion exchange character to the enzyme and thus enable the immobilization of other enzymes on its surface. The enzyme activity was fully maintained during the coating and the thermal stability was marginally improved. The enzyme release from the support by incubation in the non-ionic detergent Triton X-100 was more difficult after the PEI-coating, suggesting that some intermolecular physical crosslinking had occurred, making this desorption more difficult. Thermal stability was marginally improved, but the stability of the OCCALB-PEI was significantly better than that of OCCALB during inactivation in mixtures of aqueous buffer and organic cosolvents. SDS-PAGE analysis of the inactivated biocatalyst showed the OCCALB released some enzyme to the medium during inactivation, and this was partially prevented by coating with PEI. This effect was obtained without preventing the possibility of reuse of the support by incubation in 2% ionic detergents. That way, this modified CALB not only has a strong anion exchange nature, while maintaining the activity, but it also shows improved stability under diverse reaction conditions without affecting the reversibility of the immobilization.
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Affiliation(s)
- Sara Peirce
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, C/Marie Curie 2, Campus UAM-CSIC Cantoblanco, 28049 Madrid, Spain.
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Universita' degli Studi di Napoli Federico II, 80125 Napoli, Italy.
| | - Veymar G Tacias-Pascacio
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, C/Marie Curie 2, Campus UAM-CSIC Cantoblanco, 28049 Madrid, Spain.
- Unidad de Investigación y Desarrollo en Alimentos, Instituto Tecnológico de Veracruz, Calzada Miguel A. de Quevedo 2779, 91897 Veracruz, Mexico.
| | - Maria Elena Russo
- Istituto di Ricerche sulla Combustione-Consiglio Nazionale delle Ricerche, 80125 Napoli, Italy.
| | - Antonio Marzocchella
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Universita' degli Studi di Napoli Federico II, 80125 Napoli, Italy.
| | - José J Virgen-Ortíz
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, C/Marie Curie 2, Campus UAM-CSIC Cantoblanco, 28049 Madrid, Spain.
| | - Roberto Fernandez-Lafuente
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, C/Marie Curie 2, Campus UAM-CSIC Cantoblanco, 28049 Madrid, Spain.
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Lin J, Liu Y, Chen S, Le X, Zhou X, Zhao Z, Ou Y, Yang J. Reversible immobilization of laccase onto metal-ion-chelated magnetic microspheres for bisphenol A removal. Int J Biol Macromol 2015; 84:189-99. [PMID: 26691384 DOI: 10.1016/j.ijbiomac.2015.12.013] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 12/01/2015] [Accepted: 12/09/2015] [Indexed: 01/09/2023]
Abstract
Increasing attention has been given to nanobiocatalysis for commercial applications. In this study, laccase was reversibly immobilized onto Cu(ΙΙ)- and Mn(ΙΙ)-chelated magnetic microspheres and successfully applied to remove bisphenol A (BPA) from water. The results indicated that the loading of laccase onto the metal-ion-chelated magnetic microspheres was approximately 100mg/g. After five successive adsorption-desorption cycles, the laccase adsorption capacities did not change. In comparison with free laccase, the thermal and storage stabilities of immobilized laccase were significantly improved. Immobilized laccase exhibited a high removal efficiency for BPA under the combined actions of biodegradation and adsorption. Greater than 85% of BPA was removed under optimum conditions. The effects of various factors on the BPA removal efficiency of immobilized laccase were analysed. The results showed that metal-ion-chelated magnetic microspheres have great potential for industrial applications.
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Affiliation(s)
- Jiahong Lin
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Yingju Liu
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Shi Chen
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China.
| | - Xueyi Le
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Xiaohua Zhou
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Zhiyong Zhao
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Yiyi Ou
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
| | - Jianhua Yang
- Institute of Biomaterial, South China Agricultural University, Guangzhou 510642, China
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24
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Jadhav SB, Bankar SB, Granström T, Ojamo H, Singhal RS, Survase SA. Interaction of carbohydrates with alcohol dehydrogenase: Effect on enzyme activity. J Biosci Bioeng 2015; 120:252-6. [DOI: 10.1016/j.jbiosc.2015.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/09/2014] [Accepted: 01/07/2015] [Indexed: 10/24/2022]
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25
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Flow-injection amperometric determination of glucose using a biosensor based on immobilization of glucose oxidase onto Au seeds decorated on core Fe3O4 nanoparticles. Talanta 2015; 142:35-42. [DOI: 10.1016/j.talanta.2015.01.046] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 01/27/2015] [Accepted: 01/28/2015] [Indexed: 11/17/2022]
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26
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Singh V, Jadhav SB, Singhal RS. Interaction of polyphenol oxidase of Solanum tuberosum with β-cyclodextrin: Process details and applications. Int J Biol Macromol 2015; 80:469-74. [PMID: 26187193 DOI: 10.1016/j.ijbiomac.2015.07.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 07/06/2015] [Accepted: 07/08/2015] [Indexed: 11/16/2022]
Abstract
Polysaccharides differing in structure and chemical nature were screened for their ability to bind non-covalently with polyphenol oxidase (PPO) from potato (as a model) and their effect on enzyme activity. All the polysaccharides selected inhibited the PPO but β-cyclodextrin showed maximum inhibition under optimum conditions. Process details for the inhibition of PPO were studied with respect to concentration of β-cyclodextrin, temperature, pH, and time. Higher inhibition constant and lower half life was obtained at 40 °C than at 30 °C in the presence of inhibitor. β-Cyclodextrin showed mixed type of inhibition of PPO. β-Cyclodextrin was further exploited as anti-browning agent in selected fruit juices. It not only showed a significant anti-browning effect on freshly prepared potato juice but was also effective in other fruit juices. Better effect was seen in pineapple, apple and pear as compared to banana, sugarcane and guava fruit juices.
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Affiliation(s)
- Virendra Singh
- Food Engineering and Technology Department, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019, India
| | - Swati B Jadhav
- Food Engineering and Technology Department, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019, India
| | - Rekha S Singhal
- Food Engineering and Technology Department, Institute of Chemical Technology, Nathalal Parekh Marg, Matunga, Mumbai 400 019, India.
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27
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Padilla-Martínez SG, Martínez-Jothar L, Sampedro JG, Tristan F, Pérez E. Enhanced thermal stability and pH behavior of glucose oxidase on electrostatic interaction with polyethylenimine. Int J Biol Macromol 2015; 75:453-9. [PMID: 25687477 DOI: 10.1016/j.ijbiomac.2015.02.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 02/05/2015] [Accepted: 02/06/2015] [Indexed: 12/21/2022]
Abstract
Electrostatic interactions, mediated by ionic-exchange, between polyethylenimine (PEI) and glucose oxidase (GOx) were used to form GOx-PEI macro-complex, which were evaluated for pH and thermal stability of GOx. Under the experimental conditions, the complex had a dominant GOx presence on its surface and a hydrodynamic diameter of 205 ± 16 nm. Activity was evaluated from 40 to 75 °C, and at pH from 2 to 12. GOx activity in complex was maintained up to 70 °C and it was lost at 75 °C. In contrast, free GOx showed a maximum activity at 50 °C, which was completely lost at 70 °C. This difference, observed by fluorescence analysis, was associated with the compact unfolded structure of GOx in the complex. This GOx stability was not observed under pH variations, and complex formation was only possible at pH ≥ 5 where enzymatic activity was diminished by the presence of PEI.
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Affiliation(s)
- Silvia G Padilla-Martínez
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico
| | - Lucía Martínez-Jothar
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico
| | - José G Sampedro
- Instituto de Física, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico
| | - Ferdinando Tristan
- Departamento de Ciencias Naturales - DCNI, Universidad Autónoma Metropolitana Unidad Cuajimalpa, Av. Vasco de Quiroga 4871, Cuajimalpa, Santa Fe, 05348 Mexico City, Mexico
| | - Elías Pérez
- Instituto de Física, Universidad Autónoma de San Luis Potosí, Álvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico.
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Zhang X, Hua M, Lv L, Pan B. Ionic polymer-coated laccase with high activity and enhanced stability: application in the decolourisation of water containing AO7. Sci Rep 2015; 5:8253. [PMID: 25652843 PMCID: PMC4317704 DOI: 10.1038/srep08253] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 01/12/2015] [Indexed: 12/29/2022] Open
Abstract
Eliminating dyes in environmental water purification remains a formidable challenge. Laccase is a unique, environmentally friendly and efficient biocatalyst that can degrade pollutants. However, the use of laccase for the degradation of pollutants is considerably limited by its susceptibility to environmental changes and its poor reusability. We fabricated a novel biocatalyst (LacPG) by coating polyethylenimine onto the native laccase (Lac) followed by crosslinking with glutaraldehyde. The stability of the resulting LacPG was highly enhanced against pH variations, thermal treatments and provided better long-term storage with a negligible loss in enzymatic activity. Compared to Lac, LacPG exhibited significantly higher decolourisation efficiency in the degradation of a representative azo dye, acid orange 7 (AO7), which resulted from the electrostatic attraction between the coating and AO7. LacPG was separated from the AO7 solution using an ultrafiltration unit. The increased size and modified surface chemistry of LacPG facilitated ultrafiltration and reduced membrane fouling. LacPG exhibited enhanced stability, high catalytic activity and favourable properties for membrane separation; therefore, LacPG could be continuously reused in an enzymatic membrane reactor with a high efficiency for decolourising water containing AO7. The developed strategy appears to be promising for enhancing the applicability of laccase in practical water treatment.
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Affiliation(s)
- Xiaolin Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, P.R. China
| | - Ming Hua
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, P.R. China
| | - Lu Lv
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, P.R. China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, P.R. China
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29
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Microplate based optical biosensor for l-Dopa using tyrosinase from Amorphophallus campanulatus. Anal Chim Acta 2014; 849:50-6. [DOI: 10.1016/j.aca.2014.08.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 08/10/2014] [Indexed: 11/21/2022]
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30
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Mohan Kumar NS, Kishore V, Manonmani HK. CHEMICAL MODIFICATION OF L-ASPARAGINASE FROMCladosporiumsp. FOR IMPROVED ACTIVITY AND THERMAL STABILITY. Prep Biochem Biotechnol 2014; 44:433-50. [DOI: 10.1080/10826068.2013.833110] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Rodrigues RC, Barbosa O, Ortiz C, Berenguer-Murcia Á, Torres R, Fernandez-Lafuente R. Amination of enzymes to improve biocatalyst performance: coupling genetic modification and physicochemical tools. RSC Adv 2014. [DOI: 10.1039/c4ra04625k] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Improvement of the features of an enzyme is in many instances a pre-requisite for the industrial implementation of these exceedingly interesting biocatalysts.
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Affiliation(s)
- Rafael C. Rodrigues
- Biocatalysis and Enzyme Technology Lab
- Institute of Food Science and Technology
- Federal University of Rio Grande do Sul
- Porto Alegre, Brazil
| | - Oveimar Barbosa
- Escuela de Química
- Grupo de investigación en Bioquímica y Microbiología (GIBIM)
- Edificio Camilo Torres 210
- Universidad Industrial de Santander
- Bucaramanga, Colombia
| | - Claudia Ortiz
- Escuela de Bacteriología y Laboratorio Clínico
- Universidad Industrial de Santander
- Bucaramanga, Colombia
| | - Ángel Berenguer-Murcia
- Instituto Universitario de Materiales
- Departamento de Química Inorgánica
- Universidad de Alicante
- Ap. 99-03080 Alicante, Spain
| | - Rodrigo Torres
- Escuela de Química
- Grupo de investigación en Bioquímica y Microbiología (GIBIM)
- Edificio Camilo Torres 210
- Universidad Industrial de Santander
- Bucaramanga, Colombia
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32
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Wong DE, Talbert JN, Goddard JM. Layer by layer assembly of a biocatalytic packaging film: lactase covalently bound to low-density polyethylene. J Food Sci 2013; 78:E853-60. [PMID: 23647496 DOI: 10.1111/1750-3841.12134] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 03/20/2013] [Indexed: 12/15/2022]
Abstract
Active packaging is utilized to overcome limitations of traditional processing to enhance the health, safety, economics, and shelf life of foods. Active packaging employs active components to interact with food constituents to give a desired effect. Herein we describe the development of an active package in which lactase is covalently attached to low-density polyethylene (LDPE) for in-package production of lactose-free dairy products. The specific goal of this work is to increase the total protein content loading onto LDPE using layer by layer (LbL) deposition, alternating polyethylenimine, glutaraldehyde (GL), and lactase, to enhance the overall activity of covalently attached lactase. The films were successfully oxidized via ultraviolet light, functionalized with polyethylenimine and glutaraldehyde, and layered with immobilized purified lactase. The total protein content increased with each additional layer of conjugated lactase, the 5-layer sample reaching up to 1.3 μg/cm2 . However, the increase in total protein did not lend to an increase in overall lactase activity. Calculated apparent Km indicated the affinity of immobilized lactase to substrate remains unchanged when compared to free lactase. Calculated apparent turnover numbers (kcat ) showed with each layer of attached lactase, a decrease in substrate turnover was experienced when compared to free lactase; with a decrease from 128.43 to 4.76 s(-1) for a 5-layer conjugation. Our results indicate that while LbL attachment of lactase to LDPE successfully increases total protein mass of the bulk material, the adverse impact in enzyme efficiency may limit the application of LbL immobilization chemistry for bioactive packaging use.
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Affiliation(s)
- Dana E Wong
- Dept. of Food Science, Univ. of Massachusetts, 102 Holdsworth Way, Amherst, MA 01003, USA
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33
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Sensing approaches on paper-based devices: a review. Anal Bioanal Chem 2013; 405:7573-95. [DOI: 10.1007/s00216-013-6911-4] [Citation(s) in RCA: 313] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 02/25/2013] [Accepted: 03/08/2013] [Indexed: 01/24/2023]
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35
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Inoue M, Yoshimoto M. Oxidation of Glucose in Gas–Liquid Flow Catalyzed by Glucose Oxidase-Containing Liposomes with Different Acyl Chain Properties. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2013. [DOI: 10.1252/jcej.12we290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Masahiro Inoue
- Department of Applied Molecular Bioscience, Yamaguchi University
| | - Makoto Yoshimoto
- Department of Applied Molecular Bioscience, Yamaguchi University
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36
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Betancor L, Johnson GR, Luckarift HR. Stabilized Laccases as Heterogeneous Bioelectrocatalysts. ChemCatChem 2012. [DOI: 10.1002/cctc.201200611] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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37
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Zhang Y, Rochefort D. Characterisation and applications of microcapsules obtained by interfacial polycondensation. J Microencapsul 2012; 29:636-49. [DOI: 10.3109/02652048.2012.676092] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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38
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Performance and penetration of laccase and ABTS inks on various printing substrates. Colloids Surf B Biointerfaces 2012; 90:119-28. [DOI: 10.1016/j.colsurfb.2011.10.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 09/05/2011] [Accepted: 10/06/2011] [Indexed: 11/16/2022]
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39
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Guerrero M, Bertrand F, Rochefort D. Activity, stability and inhibition of a bioactive paper prepared by large-scale coating of laccase microcapsules. Chem Eng Sci 2011. [DOI: 10.1016/j.ces.2011.07.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Savolainen A, Zhang Y, Rochefort D, Holopainen U, Erho T, Virtanen J, Smolander M. Printing of Polymer Microcapsules for Enzyme Immobilization on Paper Substrate. Biomacromolecules 2011; 12:2008-15. [DOI: 10.1021/bm2003434] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anne Savolainen
- VTT Technical Research Center of Finland, VTT P.O. Box 1000, 02044 VTT, Finland
| | - Yufen Zhang
- Département de Chimie, Université de Montréal, CP6128 Succ. Centre-Ville, Montréal, Québec, Canada H3C 3J7
| | - Dominic Rochefort
- Département de Chimie, Université de Montréal, CP6128 Succ. Centre-Ville, Montréal, Québec, Canada H3C 3J7
| | - Ulla Holopainen
- VTT Technical Research Center of Finland, VTT P.O. Box 1000, 02044 VTT, Finland
| | - Tomi Erho
- VTT Technical Research Center of Finland, VTT P.O. Box 1000, 02044 VTT, Finland
| | - Jouko Virtanen
- VTT Technical Research Center of Finland, VTT P.O. Box 1000, 02044 VTT, Finland
| | - Maria Smolander
- VTT Technical Research Center of Finland, VTT P.O. Box 1000, 02044 VTT, Finland
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