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Adjuik TA, Nokes SE, Montross MD. Evaluating the feasibility of using lignin–alginate beads with starch additive for entrapping and releasing
Rhizobium
spp. J Appl Polym Sci 2022. [DOI: 10.1002/app.53181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Toby A. Adjuik
- Department of Biosystems and Agricultural Engineering University of Kentucky Lexington Kentucky USA
| | - Sue E. Nokes
- Department of Biosystems and Agricultural Engineering University of Kentucky Lexington Kentucky USA
| | - Michael D. Montross
- Department of Biosystems and Agricultural Engineering University of Kentucky Lexington Kentucky USA
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2
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Partovinia A, Soorki AA, Koosha M. Synergistic adsorption and biodegradation of heavy crude oil by a novel hybrid matrix containing immobilized Bacillus licheniformis: Aqueous phase and soil bioremediation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 222:112505. [PMID: 34273849 DOI: 10.1016/j.ecoenv.2021.112505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 06/27/2021] [Accepted: 07/07/2021] [Indexed: 06/13/2023]
Abstract
Recently, slurry phase bioremediation as a simple and economical method is shown to be a successful technique for remediation of clayey soils. Besides, the use of microbial cell immobilization as a promising technique has drawn the attention of some researchers. The primary objective of this survey is to examine the synergistic adsorption and biodegradation performance of heavy crude oil by an isolated Bacillus licheniformis immobilized in a novel hybrid matrix (PUF/alginate/microbial cell) in aqueous phase. Isotherm studies and adsorption kinetics of crude oil on PUF matrix were carried out and their results revealed a good correlation between experimental data and Langmuir's isotherm and maximum monolayer coverage was found out to be 1.25 g/g PUF. The other objective of this research is examination of hybrid matrix in slurry phase bioremediation of heavy crude oil polluted clayey soil as a reluctant model soil. In order to model, optimize, and investigate the factors affecting the total organic carbon (TOC) reduction, response surface methodology (RSM) was applied. For this purpose, the effect of three variables including crude oil concentration (5000-25,000 mg/kg dry soil), soil salinity (0-10%), and water to soil ratio (WSR: 2-10) have been studied. In this study, TOC reduction was achieved in ranging from 39% to 80% in crude oil polluted soil after 21 days. Additionally, experiments by polyurethane foam (PUF)-immobilized cell, alginate-immobilized cell, and freely cell suspended systems were conducted to compare the performance of hybrid-immobilized cell with other systems. Our results showed the superiority of immobilized cells in hybrid matrix of PUF/alginate compared to other immobilized cell (IC) and free cell (FC) systems. Overall, the results indicated that the hybrid matrix with simultaneous adsorption-biodegradation capacity is potentially suitable for further development for oil spill treatment and it can be used as an efficient cleaning method in TOC removal from actual polluted soils.
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Affiliation(s)
- Ali Partovinia
- Bioprocess Engineering Laboratory, Faculty of New Technologies Engineering, Zirab Campus, Shahid Beheshti University, Tehran, Iran.
| | - Ali Abolhasani Soorki
- Research Institute of Applied Sciences, ACECR, Shahid Beheshti University, Tehran, Iran
| | - Mojtaba Koosha
- Nano-structured Fibers Division, Faculty of New Technologies Engineering, Zirab Campus, Shahid Beheshti University, Tehran, Iran
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3
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Mateo C, Pessela BCC, Fuentes M, Torres R, Ortiz C, López-Gallego F, Betancor L, Alonso-Morales N, Guisan JM, Fernandez-Lafuente R. Very Strong but Reversible Immobilization of Enzymes on Supports Coated with Ionic Polymers. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2021; 2100:129-141. [PMID: 31939120 DOI: 10.1007/978-1-0716-0215-7_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this chapter, the properties of tailor-made anionic exchanger resins based on films of large polyethylenimine polymers (e.g., molecular weight 25,000) as supports for strong but reversible immobilization of proteins are shown. The polymer is completely coated, via covalent immobilization, the surface of different porous supports. Proteins can interact with this polymeric bed, involving a large percentage of the protein surface in the adsorption. Different enzymes have been very strongly adsorbed on these supports, retaining enzyme activities. On the other hand, adsorption is very strong and the derivatives may be used under a wide range of pH and ionic strengths. These supports may be useful even to stabilize multimeric enzymes, by involving several enzyme subunits in the immobilization.
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Affiliation(s)
- Cesar Mateo
- Institute of Catalysis, CSIC, Campus UAM-Cantoblanco, Madrid, Spain
| | | | - Manuel Fuentes
- Institute of Catalysis, CSIC, Campus UAM-Cantoblanco, Madrid, Spain
| | - Rodrigo Torres
- Institute of Catalysis, CSIC, Campus UAM-Cantoblanco, Madrid, Spain
| | - Claudia Ortiz
- Institute of Catalysis, CSIC, Campus UAM-Cantoblanco, Madrid, Spain
| | - Fernando López-Gallego
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP) CSIC, Campus UAM, Madrid, Spain.,Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH) CSIC-Universidad de Zaragoza, Zaragoza, Spain
| | - Lorena Betancor
- Institute of Catalysis, CSIC, Campus UAM-Cantoblanco, Madrid, Spain
| | | | - Jose M Guisan
- Institute of Catalysis, CSIC, Campus UAM-Cantoblanco, Madrid, Spain
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Adebar N, Gröger H. Flow Process for Ketone Reduction Using a Superabsorber-Immobilized Alcohol Dehydrogenase from Lactobacillus brevis in a Packed-Bed Reactor. Bioengineering (Basel) 2019; 6:bioengineering6040099. [PMID: 31653007 PMCID: PMC6956264 DOI: 10.3390/bioengineering6040099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 02/05/2023] Open
Abstract
Flow processes and enzyme immobilization have gained much attention over the past few years in the field of biocatalytic process design. Downstream processes and enzyme stability can be immensely simplified and improved. In this work, we report the utilization of polymer network-entrapped enzymes and their applicability in flow processes. We focused on the superabsorber-based immobilization of an alcohol dehydrogenase (ADH) from Lactobacillus brevis and its application for a reduction of acetophenone. The applicability of this immobilization technique for a biotransformation running in a packed bed reactor was then demonstrated. Towards this end, the immobilized system was intensively studied, first in a batch mode, leading to >90% conversion within 24 h under optimized conditions. A subsequent transfer of this method into a flow process was conducted, resulting in very high initial conversions of up to 67% in such a continuously running process.
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Affiliation(s)
- Niklas Adebar
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany.
| | - Harald Gröger
- Chair of Industrial Organic Chemistry and Biotechnology, Faculty of Chemistry, Bielefeld University, Universitätsstr. 25, 33615 Bielefeld, Germany.
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6
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Koenig M, König U, Eichhorn KJ, Müller M, Stamm M, Uhlmann P. In-situ-Investigation of Enzyme Immobilization on Polymer Brushes. Front Chem 2019; 7:101. [PMID: 30899756 PMCID: PMC6416228 DOI: 10.3389/fchem.2019.00101] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 05/05/2019] [Indexed: 11/13/2022] Open
Abstract
Herein, we report on the use of a combined setup of quartz-crystal microbalance, with dissipation monitoring and spectroscopic ellipsometry, to comprehensively investigate the covalent immobilization of an enzyme to a polymer layer. All steps of the covalent reaction of the model enzyme glucose oxidase with the poly(acrylic acid) brush by carbodiimide chemistry, were monitored in-situ. Data were analyzed using optical and viscoelastic modeling. A nearly complete collapse of the polymer chains was found upon activation of the carboxylic acid groups with N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide and N-Hydroxysuccinimide. The reaction with the amine groups of the enzyme occurs simultaneously with re-hydration of the polymer layer. Significantly more enzyme was immobilized on the surface compared to physical adsorption at similar conditions, at the same pH. It was found that the pH responsive swelling behavior was almost not affected by the presence of the enzyme.
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Affiliation(s)
- Meike Koenig
- Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Ulla König
- Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Klaus-Jochen Eichhorn
- Department of Analytics, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Martin Müller
- Department of Polyelectrolytes and Dispersions, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
- Physical Chemistry of Polymer Materials, Technische Universität Dresden, Dresden, Germany
| | - Manfred Stamm
- Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
- Physical Chemistry of Polymer Materials, Technische Universität Dresden, Dresden, Germany
| | - Petra Uhlmann
- Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, United States
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7
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Nosrati-Ghods N, Harrison STL, Isafiade AJ, Tai SL. Ethanol from Biomass Hydrolysates by Efficient Fermentation of Glucose and Xylose - A Review. CHEMBIOENG REVIEWS 2018. [DOI: 10.1002/cben.201800009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Nosaibeh Nosrati-Ghods
- University of Cape Town; Faculty of Engineering and the Built Environment; Department of Chemical Engineering; Private Bag 7701 Rondebosch South Africa
| | - Susan T. L. Harrison
- University of Cape Town; Faculty of Engineering and the Built Environment; Department of Chemical Engineering; Private Bag 7701 Rondebosch South Africa
| | - Adeniyi J. Isafiade
- University of Cape Town; Faculty of Engineering and the Built Environment; Department of Chemical Engineering; Private Bag 7701 Rondebosch South Africa
| | - Siew L. Tai
- University of Cape Town; Faculty of Engineering and the Built Environment; Department of Chemical Engineering; Private Bag 7701 Rondebosch South Africa
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Abstract
The continuous flow synthesis of active pharmaceutical ingredients, value-added chemicals, and materials has grown tremendously over the past ten years. This revolution in chemical manufacturing has resulted from innovations in both new methodology and technology. This field, however, has been predominantly focused on synthetic organic chemistry, and the use of biocatalysts in continuous flow systems is only now becoming popular. Although immobilized enzymes and whole cells in batch systems are common, their continuous flow counterparts have grown rapidly over the past two years. With continuous flow systems offering improved mixing, mass transfer, thermal control, pressurized processing, decreased variation, automation, process analytical technology, and in-line purification, the combination of biocatalysis and flow chemistry opens powerful new process windows. This Review explores continuous flow biocatalysts with emphasis on new technology, enzymes, whole cells, co-factor recycling, and immobilization methods for the synthesis of pharmaceuticals, value-added chemicals, and materials.
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Affiliation(s)
- Joshua Britton
- Departments of Chemistry, Molecular Biology, and Biochemistry, University of California, Irvine, CA 92697-2025, USA.
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9
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Klapiszewski Ł, Zdarta J, Jesionowski T. Titania/lignin hybrid materials as a novel support for α-amylase immobilization: A comprehensive study. Colloids Surf B Biointerfaces 2018; 162:90-97. [DOI: 10.1016/j.colsurfb.2017.11.045] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 11/05/2017] [Accepted: 11/16/2017] [Indexed: 12/25/2022]
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10
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Iurciuc (Tincu) CE, Savin A, Atanase LI, Martin P, Popa M. Physico-chemical characteristics and fermentative activity of the hydrogel particles based on polysaccharides mixture with yeast cells immobilized, obtained by ionotropic gelation. FOOD AND BIOPRODUCTS PROCESSING 2017. [DOI: 10.1016/j.fbp.2017.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Spongin-Based Scaffolds from Hippospongia communis Demosponge as an Effective Support for Lipase Immobilization. Catalysts 2017. [DOI: 10.3390/catal7050147] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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12
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Biocatalytically active silCoat-composites entrapping viable Escherichia coli. Appl Microbiol Biotechnol 2013; 98:1557-66. [DOI: 10.1007/s00253-013-5340-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 10/15/2013] [Accepted: 10/16/2013] [Indexed: 01/05/2023]
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13
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14
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Carboligation reactivity of benzaldehyde lyase (BAL, EC 4.1.2.38) covalently attached to magnetic nanoparticles. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.01.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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16
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İnal M, Yiğitoğlu M. Improvement of bioethanol productivity of immobilized Saccharomyces bayanus with using sodium alginate-graft-poly(N-vinyl-2-pyrrolidone) matrix. Appl Biochem Biotechnol 2012; 168:266-78. [PMID: 22717770 DOI: 10.1007/s12010-012-9770-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Accepted: 06/05/2012] [Indexed: 11/26/2022]
Abstract
In this study, immobilization conditions and bioethanol production characteristics of immobilized Saccharomyces bayanus were investigated into sodium alginate-graft-poly(N-vinyl-2-pyrrolidone; NaAlg-g-PVP) matrix. The matrix that crosslinked with calcium clorid was used for immobilization of S. bayanus. Bioethanol productivity of the NaAlg-g-PVP matrix was found to increase from 4.21 to 4.84 gL(-1) h(-1) when compared with the convential sodium alginate matrix. The production of bioethanol was affected by initial glucose concentration and percentage of immobilized cell beads in fermentation medium. Bioethanol productivity was increased from 3.62 to 4.84 gL(-1) h(-1) while the glucose concentration increasing from 50 to 100 gL(-1). Due to the increase in percentage from 10 to 20 % of immobilized cell beads in the fermentation medium, bioethanol productivity was increased from 4.84 to 8.68 gL(-1) h(-1). The cell immobilized NaAlg-g-PVP beads were protected 92 % of initial activity after six repeated fermentation.
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Affiliation(s)
- Murat İnal
- Science and Art Faculty, Department of Chemistry, Kirikkale University, Yahşihan 71450 Kirikkale, Turkey.
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17
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Mateo C, Bolivar JM, Godoy CA, Rocha-Martin J, Pessela BC, Curiel JA, Muñoz R, Guisan JM, Fernández-Lorente G. Improvement of Enzyme Properties with a Two-Step Immobilizaton Process on Novel Heterofunctional Supports. Biomacromolecules 2010; 11:3112-7. [DOI: 10.1021/bm100916r] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cesar Mateo
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
| | - Juan Manuel Bolivar
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
| | - Cesar A. Godoy
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
| | - Javier Rocha-Martin
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
| | - Benevides C. Pessela
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
| | - Jose Antonio Curiel
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
| | - Rosario Muñoz
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
| | - Jose M. Guisan
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
| | - Gloria Fernández-Lorente
- Departamento de Biocatálisis, Instituto de Catálisis-CSIC, Campus UAM, Cantoblanco, 28049 Madrid, Spain, and Departamento de Microbiologia, Instituto de Fermentaciones Industriales-CSIC, C/Juan de la Cierva 3, 2006 CSIC, Madrid, Spain
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18
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El-Ghaffar MAA, Atia KS, Hashem MS. Synthesis and characterization of binary copolymers of methyl methacrylate with glycidyl methacrylate and 2-hydroxy ethyl methacrylate as carriers for cellulase. J Appl Polym Sci 2010. [DOI: 10.1002/app.30063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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El-Ghaffar MA, Hashem M. Chitosan and its amino acids condensation adducts as reactive natural polymer supports for cellulase immobilization. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.02.025] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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El-Ghaffar MAA, Hashem MS. Immobilization of α-amylase onto chitosan and its amino acid condensation adducts. J Appl Polym Sci 2009. [DOI: 10.1002/app.29292] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Study of immobilized and extracellular invertase of lemon balm. Chem Nat Compd 2009. [DOI: 10.1007/s10600-009-9183-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Filho M, Pessela BC, Mateo C, Carrascosa AV, Fernandez-Lafuente R, Guisán JM. Reversible immobilization of a hexameric α-galactosidase from Thermus sp. strain T2 on polymeric ionic exchangers. Process Biochem 2008. [DOI: 10.1016/j.procbio.2008.05.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tepe O, Dursun AY. Combined effects of external mass transfer and biodegradation rates on removal of phenol by immobilized Ralstonia eutropha in a packed bed reactor. JOURNAL OF HAZARDOUS MATERIALS 2008; 151:9-16. [PMID: 17611023 DOI: 10.1016/j.jhazmat.2007.05.049] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2005] [Revised: 05/13/2007] [Accepted: 05/14/2007] [Indexed: 05/16/2023]
Abstract
Biodegradation of phenol by calcium-alginate immobilized Ralstonia eutropha was carried out in a batch stirred and a packed bed reactor. In the batch system studies, the effect of initial phenol concentration on biodegradation was investigated at 30 degrees C and pH 7 while in the continuous system studies, the effects of flow rate and inlet phenol concentration on biodegradation were tested at the same temperature and pH. The observed biodegradation rate constant was calculated at different flow rates with the assumption of first-order biodegradation kinetics. Various external mass transfer correlations were evaluated and a new correlation of the type JD=K(NRe)(-(n-1)) was developed with the values of K=1.34 and n=0.65. The intrinsic first-order biodegradation rate constants and the external mass transfer coefficients were calculated then the combined effects of these rates on the observed first-order biodegradation rate constants were also investigated.
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Affiliation(s)
- Ozlem Tepe
- Department of Environmental Engineering, Firat University, 23100 Elazig, Turkey
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Kapoor M, Kuhad RC. Immobilization of xylanase from Bacillus pumilus strain MK001 and its application in production of xylo-oligosaccharides. Appl Biochem Biotechnol 2008; 142:125-38. [PMID: 18025574 DOI: 10.1007/s12010-007-0013-8] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2006] [Revised: 07/18/2006] [Accepted: 07/25/2006] [Indexed: 10/23/2022]
Abstract
Xylanase from Bacillus pumilus strain MK001 was immobilized on different matrices following varied immobilization methods. Entrapment using gelatin (GE) (40.0%), physical adsorption on chitin (CH) (35.0%), ionic binding with Q-sepharose (Q-S) (45.0%), and covalent binding with HP-20 beads (42.0%) showed the maximum xylanase immobilization efficiency. The optimum pH of immobilized xylanase shifted up to 1.0 unit (pH 7.0) as compared to free enzyme (pH 6.0). The immobilized xylanase exhibited higher pH stability (up to 28.0%) in the alkaline pH range (7.0-10.0) as compared to free enzyme. Optimum temperature of immobilized xylanase was observed to be 8 degrees C higher (68.0 degrees C) than free enzyme (60.0 degrees C). The free xylanase retained 50.0% activity, whereas xylanase immobilized on HP-20, Q-S, CH, and GE retained 68.0, 64.0, 58.0, and 57.0% residual activity, respectively, after 3 h of incubation at 80.0 degrees C. The immobilized xylanase registered marginal increase and decrease in Km and Vmax values, respectively, as compared to free enzyme. The immobilized xylanase retained up to 70.0% of its initial hydrolysis activity after seven enzyme reaction cycles. The immobilized xylanase was found to produce higher levels of high-quality xylo-oligosaccharides from birchwood xylan, indicating its potential in the nutraceutical industry.
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Affiliation(s)
- Mukesh Kapoor
- Lignocellulose Biotechnology Laboratory, Department of Microbiology, University of Delhi South Campus, Benito Juarez Marg, New Delhi, 110021, India
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Gómez L, Ramírez HL, Neira-Carrillo A, Villalonga R. Polyelectrolyte complex formation mediated immobilization of chitosan-invertase neoglycoconjugate on pectin-coated chitin. Bioprocess Biosyst Eng 2006; 28:387-95. [PMID: 16775742 DOI: 10.1007/s00449-005-0043-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2005] [Accepted: 12/23/2005] [Indexed: 10/25/2022]
Abstract
Saccharomyces cerevisiae invertase, chemically modified with chitosan, was immobilized on pectin-coated chitin support via polyelectrolyte complex formation. The yield of immobilized enzyme protein was determined as 85% and the immobilized biocatalyst retained 97% of the initial chitosan-invertase activity. The optimum temperature for invertase was increased by 10 degrees C and its thermostability was enhanced by about 10 degrees C after immobilization. The immobilized enzyme was stable against incubation in high ionic strength solutions and was 4-fold more resistant to thermal treatment at 65 degrees C than the native counterpart. The biocatalyst prepared retained 96 and 95% of the original catalytic activity after ten cycles of reuse and 74 h of continuous operational regime in a packed bed reactor, respectively.
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Affiliation(s)
- Leissy Gómez
- Center for Enzyme Technology, University of Matanzas, 44740, Matanzas, Cuba
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Gómez L, Ramírez HL, Villalonga ML, Hernández J, Villalonga R. Immobilization of chitosan-modified invertase on alginate-coated chitin support via polyelectrolyte complex formation. Enzyme Microb Technol 2006. [DOI: 10.1016/j.enzmictec.2004.10.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Continuous ethanol production from glucose using Saccharomyces cerevisiae immobilized on fluidized microcarriers. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0300-9467(92)80015-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Morin N, Bernier-Cardou M, Champagne CP. Production of Concentrated
Lactococcus lactis
subsp.
cremoris
Suspensions in Calcium Alginate Beads. Appl Environ Microbiol 1992; 58:545-50. [PMID: 16348644 PMCID: PMC195282 DOI: 10.1128/aem.58.2.545-550.1992] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The effect of simultaneous modification of medium composition and growth conditions on the production of
Lactococcus lactis
subsp.
cremoris
biomass in calcium alginate beads was studied by the response surface method. Statistical methods of data analysis for unbalanced experiments are illustrated. The media tested were whey, whey supplemented with yeast extract and/or meat extract, milk, and the commercial medium Gold Complete (Nordica). Fermentations were performed at 23°C under pH control (5.6, 6.0, 6.4, or 6.8). In one complete series, 1% CaCO
3
was added to the growth media. There were strong interactions between CaCO
3
and media, CaCO
3
and pH level, and CaCO
3
, media, and pH level. In media with CaCO
3
, all first-order interactions between media, pH, and sampling time were significant. The addition of CaCO
3
increased cell counts in whey-meat extract medium, but no significant difference was found with the other media. Uncoupling between growth and acidification occurred between 16 and 22 h. Highest counts were obtained on milk and Gold Complete (6 × 10
10
/g). In CaCO
3
-containing media, pH influenced cell counts only in whey and in Gold Complete (pH 5.6 and 6.0 giving the best results); pH also influenced the bead mass obtained at the end of the fermentation. Biomass production in alginate gels is proposed as a method of obtaining concentrated cell suspensions without centrifugation or filtration.
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Affiliation(s)
- N Morin
- Agri-Food Technology Campus and Food Research and Development Centre, Agriculture Canada, St. Hyacinthe, Québec, Canada J2S 8E3, and Forestry Canada-Québec Region, Ste. Foy, Québec, Canada G1V 4C7
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30
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CHAMPAGNE CLAUDEP. EFFECT OF PENCILLIN ON FREE OR IMMOBILIZED LACTOCOCCI: MILK ACIDIFICATION AND RESIDUAL ANTIBIOTIC LEVEL. J Food Saf 1992. [DOI: 10.1111/j.1745-4565.1992.tb00088.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Affiliation(s)
- C Akin
- Amoco Corporation, Amoco Research Center, Naperville, Illinois 60566
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32
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Mustranta A, Pere J, Poutanen K. Comparison of different carriers for adsorption of Saccharomyces cerevisiae and Zymomonas mobilis. Enzyme Microb Technol 1987. [DOI: 10.1016/0141-0229(87)90002-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Martinek K, Levashov AV, Klyachko N, Khmelnitski YL, Berezin IV. Micellar enzymology. EUROPEAN JOURNAL OF BIOCHEMISTRY 1986; 155:453-68. [PMID: 2420585 DOI: 10.1111/j.1432-1033.1986.tb09512.x] [Citation(s) in RCA: 476] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Experimental approaches to modelling the enzymatic function of biological membranes are discussed. Emphasis is given to pseudohomogeneous systems such as proteolipid complexes and enzymes in organic solvents; the latter are solubilized with phospholipids or synthetic surfactants. Methods for producing and studying such micellar systems are considered. The key research problems of micellar enzymology are formulated and its relation to enzyme membranology is discussed. Finally, the new potentialities are noted of applied enzymology (biotechnology) offered by application of a colloidal solution of water in organic solvents as a microheterogeneous medium for enzymatic reactions.
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