51
|
Borsa BA, Tuna BG, Hernandez FJ, Hernandez LI, Bayramoglu G, Arica MY, Ozalp VC. Staphylococcus aureus detection in blood samples by silica nanoparticle-oligonucleotides conjugates. Biosens Bioelectron 2016; 86:27-32. [DOI: 10.1016/j.bios.2016.06.023] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 05/27/2016] [Accepted: 06/09/2016] [Indexed: 01/01/2023]
|
52
|
Rahman SF, Min K, Park SH, Park JH, Yoo JC, Park DH. Highly sensitive and selective dopamine detection by an amperometric biosensor based on tyrosinase/MWNT/GCE. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-016-0207-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
53
|
Çelik A, Dinçer A, Aydemir T. Characterization of β-glucosidase immobilized on chitosan-multiwalled carbon nanotubes (MWCNTS) and their application on tea extracts for aroma enhancement. Int J Biol Macromol 2016; 89:406-14. [DOI: 10.1016/j.ijbiomac.2016.05.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 04/29/2016] [Accepted: 05/02/2016] [Indexed: 12/01/2022]
|
54
|
Hosseini-Abari A, Kim BG, Lee SH, Emtiazi G, Kim W, Kim JH. Surface display of bacterial tyrosinase on spores ofBacillus subtilisusing CotE as an anchor protein. J Basic Microbiol 2016; 56:1331-1337. [DOI: 10.1002/jobm.201600203] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 05/16/2016] [Indexed: 01/07/2023]
Affiliation(s)
| | - Byung-Gee Kim
- Interdisciplinary Program for Biochemical Engineering and Biotechnology; Institute of Molecular Biology and Genetics; Seoul National University; Seoul Korea
| | - Sang-Hyuk Lee
- Interdisciplinary Program for Biochemical Engineering and Biotechnology; Institute of Molecular Biology and Genetics; Seoul National University; Seoul Korea
| | - Giti Emtiazi
- Faculty of Sciences; Department of Biology; University of Isfahan; Isfahan Iran
| | - Wooil Kim
- Department of Chemical Engineering; College of Engineering; Dong-A University; Busan Korea
| | - June-Hyung Kim
- Department of Chemical Engineering; College of Engineering; Dong-A University; Busan Korea
| |
Collapse
|
55
|
Leonardo S, Prieto-Simón B, Campàs M. Past, present and future of diatoms in biosensing. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.11.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
56
|
Martínková L, Kotik M, Marková E, Homolka L. Biodegradation of phenolic compounds by Basidiomycota and its phenol oxidases: A review. CHEMOSPHERE 2016; 149:373-382. [PMID: 26874626 DOI: 10.1016/j.chemosphere.2016.01.022] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/09/2015] [Accepted: 01/06/2016] [Indexed: 06/05/2023]
Abstract
The phylum Basidiomycota include organisms with enormous bioremediation potential. A variety of processes were proposed at the lab scale for using these fungi and their phenol oxidases in the degradation of phenolics. Here we present a survey of this topic using literature published mostly over the last 10 years. First, the sources of the enzymes are summarized. The laccase and tyrosinase were mainly from Trametes versicolor and Agaricus bisporus, respectively. Recently, however, new promising wild-type producers of the enzymes have emerged and a number of recombinant strains were also constructed, based mainly on yeasts or Aspergillus strains as hosts. The next part of the study summarizes the enzyme and whole-cell applications for the degradation of phenols, polyphenols, cresols, alkylphenols, naphthols, bisphenols and halogenated (bis)phenols in model mixtures or real wastewaters from the food, paper and coal industries, or municipal and hospital sewage. The enzymes were applied as free (crude or purified) enzymes or as enzymes immobilized in various supports or CLEAs, and optionally recycled or used in continuous mode. Alternatively, growing cultures or harvested mycelia were used instead. The products, which were characterized as quinones and their polymers in some cases, could be eliminated by filtration, flocculation or adsorption onto chitosan. The purity of a treated wastewater was monitored using a sensitive aquatic organism. It is concluded that low-cost sources of these enzymes should be searched for and the benefits of enzymatic, biological and physico-chemical methods could be combined to make the processes fit for industrial use.
Collapse
Affiliation(s)
- L Martínková
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic.
| | - M Kotik
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic
| | - E Marková
- Laboratory of Biotransformation, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic; Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 3, CZ-166 28 Prague, Czech Republic
| | - L Homolka
- Laboratory of Environmental Microbiology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague, Czech Republic
| |
Collapse
|
57
|
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
| |
Collapse
|
58
|
Hua Z, Qin Q, Bai X, Huang X, Zhang Q. An electrochemical biosensing platform based on 1-formylpyrene functionalized reduced graphene oxide for sensitive determination of phenol. RSC Adv 2016. [DOI: 10.1039/c5ra27563f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
A novel electrochemical biosensing platform is proposed. New tyrosinase-based biosensor can be used to detect phenols.
Collapse
Affiliation(s)
- Zulin Hua
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education
- College of Environment
- Hohai University
- Nanjing 210098
- China
| | - Qin Qin
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education
- College of Environment
- Hohai University
- Nanjing 210098
- China
| | - Xue Bai
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education
- College of Environment
- Hohai University
- Nanjing 210098
- China
| | - Xin Huang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education
- College of Environment
- Hohai University
- Nanjing 210098
- China
| | - Qi Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education
- College of Environment
- Hohai University
- Nanjing 210098
- China
| |
Collapse
|
59
|
Donati E, Polcaro CM, Ciccioli P, Galli E. The comparative study of a laccase-natural clinoptilolite-based catalyst activity and free laccase activity on model compounds. JOURNAL OF HAZARDOUS MATERIALS 2015; 289:83-90. [PMID: 25710818 DOI: 10.1016/j.jhazmat.2015.02.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 02/12/2015] [Accepted: 02/15/2015] [Indexed: 06/04/2023]
Abstract
For the first time a laccase from Trametes versicolor was immobilized on a natural clinoptilolite with Si/Al=5 to obtain a biocatalyst for environmental applications. Immobilization procedures exploiting adsorption and covalent binding were both tested, and only the last provided enough activity for practical applications. The optimal conditions for the immobilization of the enzyme on the support and the kinetic parameters for the free and covalent bonded laccase were determined. The laccase bonded to the zeolitic support showed a lower activity than the free laccase, but the pH and thermal stability were greater. 20 mg of dry biocatalyst containing 1 U of laccase were able to remove in 50h 73-78% of 2-chlorophenol and 2,4-dichlorophenol in relatively concentrated aqueous solutions (100 μmol L(-1)).
Collapse
Affiliation(s)
- Enrica Donati
- Institute of Chemical Methodologies of CNR (IMC), Research Area of Rome 1, Via Salaria Km 29,300, 00015 Monterotondo, Rome, Italy
| | - Chiara M Polcaro
- Institute of Chemical Methodologies of CNR (IMC), Research Area of Rome 1, Via Salaria Km 29,300, 00015 Monterotondo, Rome, Italy.
| | - Piero Ciccioli
- Institute of Chemical Methodologies of CNR (IMC), Research Area of Rome 1, Via Salaria Km 29,300, 00015 Monterotondo, Rome, Italy
| | - Emanuela Galli
- Institute of Agro-Environmental and Forest Biology of CNR (IBAF), Research Area of Rome 1, Via Salaria Km 29,300, 00015 Monterotondo, Rome, Italy
| |
Collapse
|
60
|
Immobilized lipase on micro-porous biosilica for enzymatic transesterification of algal oil. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2014.12.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
61
|
Ebadi SV, Fakhrali A, Ranaei-Siadat SO, Gharehaghaji AA, Mazinani S, Dinari M, Harati J. Immobilization of acetylcholinesterase on electrospun poly(acrylic acid)/multi-walled carbon nanotube nanofibrous membranes. RSC Adv 2015. [DOI: 10.1039/c5ra03456f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The immobilized enzyme on nanofibrous samples maintained more than 90% of its original activity even after 10 cycles of reusing.
Collapse
Affiliation(s)
- Seyed Vahid Ebadi
- Department of Textile Engineering
- Amirkabir University of Technology
- 15875-4413 Tehran
- Iran
| | - Aref Fakhrali
- Department of Textile Engineering
- Amirkabir University of Technology
- 15875-4413 Tehran
- Iran
| | - Seyed Omid Ranaei-Siadat
- Nano-Biotechnology Engineering Lab
- Department of Biotechnology
- Faculty of Energy Engineering and New Technologies
- Shahid Beheshti University
- Tehran
| | - Ali Akbar Gharehaghaji
- Department of Textile Engineering
- Amirkabir University of Technology
- 15875-4413 Tehran
- Iran
| | - Saeedeh Mazinani
- Amirkabir Nanotechnology Research Institute (ANTRI)
- Amirkabir University of Technology (Polytechnic of Tehran)
- 15875-4413 Tehran
- Iran
| | - Mohammad Dinari
- Organic Polymer Chemistry Research Laboratory
- Department of Chemistry
- Isfahan University of Technology
- Isfahan
- Iran
| | - Javad Harati
- Nano-Biotechnology Engineering Lab
- Department of Biotechnology
- Faculty of Energy Engineering and New Technologies
- Shahid Beheshti University
- Tehran
| |
Collapse
|
62
|
Ozalp VC, Bayramoglu G, Arica MY. Magnetic silica nanoparticle–Taq polymerase hybrids for multiple uses in polymerase chain reaction. RSC Adv 2015. [DOI: 10.1039/c5ra15677g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Magnetic-silica core–shell nanoparticles were proposed as a fast purification strategy for recombinant enzymes and their subsequent usability in catalysis reactions. A proof-of-concept study with Taq polymerase hybrids was demonstrated.
Collapse
Affiliation(s)
- V. Cengiz Ozalp
- Istanbul Kemerburgaz University
- School of Medicine
- 34217 Istanbul
- Turkey
| | - G. Bayramoglu
- Biochemical Processing and Biomaterial Research Laboratory
- Faculty of Science
- Gazi University
- Ankara
- Turkey
| | - M. Yakup Arica
- Department of Chemistry
- Faculty of Science
- Gazi University
- Ankara
- Turkey
| |
Collapse
|
63
|
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.
Collapse
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
| |
Collapse
|
64
|
Zhang Y, Hui B, Ye L. Reactive toughening of polyvinyl alcohol hydrogel and its wastewater treatment performance by immobilization of microorganisms. RSC Adv 2015. [DOI: 10.1039/c5ra20495j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Toughened PVA hydrogel beads were prepared by co-crosslinking with glycerol, resulting in the formation of a uniform and dense network gel structure, and the tensile property and hydraulic impact resistance were efficiently improved.
Collapse
Affiliation(s)
- Yi Zhang
- College of Biological and Chemical Engineering of Panzhihua University
- Panzhihua 617000
- China
| | - Bing Hui
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- China
| | - Lin Ye
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065
- China
| |
Collapse
|
65
|
Biogenic nanomaterials from photosynthetic microorganisms. Curr Opin Biotechnol 2014; 33:23-31. [PMID: 25445544 DOI: 10.1016/j.copbio.2014.10.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 10/14/2014] [Accepted: 10/14/2014] [Indexed: 12/18/2022]
Abstract
The use of algal cell cultures represents a sustainable and environmentally friendly platform for the biogenic production of nanobiomaterials and biocatalysts. For example, advances in the production of biogeneic nanomaterials from algal cell cultures, such as crystalline β-chitin nanofibrils and gold and silver nanoparticles, could enable the 'green' production of biomaterials such as tissue-engineering scaffolds or drug carriers, supercapacitors and optoelectric materials. The in vivo functionalization, as well as newly demonstrated methods of production and modification, of biogenic diatom biosilica have led to the development of organic-inorganic hybrid catalytic systems as well as new biomaterials for drug delivery, biosensors and heavy-metal adsorbents.
Collapse
|
66
|
Vashist SK, Lam E, Hrapovic S, Male KB, Luong JHT. Immobilization of Antibodies and Enzymes on 3-Aminopropyltriethoxysilane-Functionalized Bioanalytical Platforms for Biosensors and Diagnostics. Chem Rev 2014; 114:11083-130. [DOI: 10.1021/cr5000943] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sandeep Kumar Vashist
- HSG-IMIT - Institut für Mikro- und Informationstechnik, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Laboratory for MEMS Applications, Department of Microsystems Engineering - IMTEK, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Edmond Lam
- National Research Council Canada, Montreal, Quebec H4P 2R2, Canada
| | | | - Keith B. Male
- National Research Council Canada, Montreal, Quebec H4P 2R2, Canada
| | - John H. T. Luong
- Innovative Chromatography Group, Irish Separation Science Cluster (ISSC), Department of Chemistry and Analytical, Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
| |
Collapse
|
67
|
Rodríguez-Sevilla E, Ramírez-Silva MT, Romero-Romo M, Ibarra-Escutia P, Palomar-Pardavé M. Electrochemical quantification of the antioxidant capacity of medicinal plants using biosensors. SENSORS 2014; 14:14423-39. [PMID: 25111237 PMCID: PMC4179004 DOI: 10.3390/s140814423] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 07/28/2014] [Accepted: 07/30/2014] [Indexed: 11/16/2022]
Abstract
The working area of a screen-printed electrode, SPE, was modified with the enzyme tyrosinase (Tyr) using different immobilization methods, namely entrapment with water-soluble polyvinyl alcohol (PVA), cross-linking using glutaraldehyde (GA), and cross-linking using GA and human serum albumin (HSA); the resulting electrodes were termed SPE/Tyr/PVA, SPE/Tyr/GA and SPE/Tyr/HSA/GA, respectively. These biosensors were characterized by means of amperometry and EIS techniques. From amperometric evaluations, the apparent Michaelis-Menten constant, Km′, of each biosensor was evaluated while the respective charge transfer resistance, Rct, was assessed from impedance measurements. It was found that the SPE/Tyr/GA had the smallest Km′ (57 ± 7) μM and Rct values. This electrode also displayed both the lowest detection and quantification limits for catechol quantification. Using the SPE/Tyr/GA, the Trolox Equivalent Antioxidant Capacity (TEAC) was determined from infusions prepared with “mirto” (Salvia microphylla), “hHierba dulce” (Lippia dulcis) and “salve real” (Lippia alba), medicinal plants commonly used in Mexico.
Collapse
Affiliation(s)
- Erika Rodríguez-Sevilla
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Área de Química Analítica, San Rafael Atlixco 186, Col. Vicentina, Del. Iztapalapa, México D.F., C.P. 09340, Mexico.
| | - María-Teresa Ramírez-Silva
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Área de Química Analítica, San Rafael Atlixco 186, Col. Vicentina, Del. Iztapalapa, México D.F., C.P. 09340, Mexico.
| | - Mario Romero-Romo
- Departamento de Materiales, Universidad Autónoma Metropolitana-Azcapotzalco, Área Ingeniería de Materiales, Av. San Pablo 180, Col. Reynosa-Tamaulipas, Del. Azcapotzalco, México, D.F., C.P. 02200, Mexico.
| | - Pedro Ibarra-Escutia
- SEP-Instituto Tecnológico de Toluca. Departamento de Ingeniería Química y Bioquímica. Av, Tecnológico S/N. Fraccionamiento La Virgen, Metepec, Edo de México, C.P. 52149, Mexico.
| | - Manuel Palomar-Pardavé
- Departamento de Materiales, Universidad Autónoma Metropolitana-Azcapotzalco, Área Ingeniería de Materiales, Av. San Pablo 180, Col. Reynosa-Tamaulipas, Del. Azcapotzalco, México, D.F., C.P. 02200, Mexico.
| |
Collapse
|
68
|
Guzik U, Hupert-Kocurek K, Wojcieszyńska D. Immobilization as a strategy for improving enzyme properties-application to oxidoreductases. Molecules 2014; 19:8995-9018. [PMID: 24979403 PMCID: PMC6271243 DOI: 10.3390/molecules19078995] [Citation(s) in RCA: 305] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/13/2014] [Accepted: 06/16/2014] [Indexed: 01/05/2023] Open
Abstract
The main objective of the immobilization of enzymes is to enhance the economics of biocatalytic processes. Immobilization allows one to re-use the enzyme for an extended period of time and enables easier separation of the catalyst from the product. Additionally, immobilization improves many properties of enzymes such as performance in organic solvents, pH tolerance, heat stability or the functional stability. Increasing the structural rigidity of the protein and stabilization of multimeric enzymes which prevents dissociation-related inactivation. In the last decade, several papers about immobilization methods have been published. In our work, we present a relation between the influence of immobilization on the improvement of the properties of selected oxidoreductases and their commercial value. We also present our view on the role that different immobilization methods play in the reduction of enzyme inhibition during biotechnological processes.
Collapse
Affiliation(s)
- Urszula Guzik
- University of Silesia in Katowice, Faculty of Biology and Environmental Protection, Department of Biochemistry, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Katarzyna Hupert-Kocurek
- University of Silesia in Katowice, Faculty of Biology and Environmental Protection, Department of Biochemistry, Jagiellonska 28, 40-032 Katowice, Poland.
| | - Danuta Wojcieszyńska
- University of Silesia in Katowice, Faculty of Biology and Environmental Protection, Department of Biochemistry, Jagiellonska 28, 40-032 Katowice, Poland.
| |
Collapse
|
69
|
Immobilization of horseradish peroxidase in phospholipid-templated titania and its applications in phenolic compounds and dye removal. Enzyme Microb Technol 2014; 55:1-6. [DOI: 10.1016/j.enzmictec.2013.11.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 11/15/2013] [Accepted: 11/18/2013] [Indexed: 11/24/2022]
|
70
|
Activity and stability of urease entrapped in thermosensitive poly(N-isopropylacrylamide-co-poly(ethyleneglycol)-methacrylate) hydrogel. Bioprocess Biosyst Eng 2013; 37:235-43. [PMID: 23771178 DOI: 10.1007/s00449-013-0990-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 05/29/2013] [Indexed: 12/27/2022]
Abstract
Urease was entrapped in thermally responsive poly(N-isopropylacrylamide-co-poly(ethyleneglycol)-methacrylate), p[NIPAM-p(PEG)-MA], copolymer hydrogels. The copolymer membrane shows temperature-responsive properties similar to conventional p(NIPAM) hydrogels, which reversibly swell below and de-swell above the lower critical solution temperature of p(NIPAM) hydrogel at around 32 °C. The retained activities of the entrapped urease (in p[NIPAM-p(PEG)-MA]-4 hydrogels) were between 83 and 53% compared to that of the same quantity of free enzyme. Due to the thermo-responsive character of the hydrogel matrix, the maximum activity was achieved at around 25 °C with the immobilized urease. Optimum pH was the same for both free and entrapped enzyme. Operational, thermal and storage stabilities of the enzyme were found to increase with entrapment of urease in the thermoresponsive hydrogel matrixes. As for reusability, the immobilized urease retained 89% of its activity after ten repeated uses.
Collapse
|