1
|
Direct recovery of intracellular lipase from cell lysate by adsorption on silica magnetic microparticles activated with Octyl groups. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1007/s43153-021-00190-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
2
|
Rezayati S, Ramazani A, Sajjadifar S, Aghahosseini H, Rezaei A. Design of a Schiff Base Complex of Copper Coated on Epoxy-Modified Core-Shell MNPs as an Environmentally Friendly and Novel Catalyst for the One-Pot Synthesis of Various Chromene-Annulated Heterocycles. ACS OMEGA 2021; 6:25608-25622. [PMID: 34632217 PMCID: PMC8495884 DOI: 10.1021/acsomega.1c03672] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Indexed: 05/04/2023]
Abstract
An ecofriendly inorganic-organic hybrid and novel Schiff base complex of copper coated on epoxy-modified Fe3O4@SiO2 MNPs was successfully designed and prepared from readily available chemicals. In this method, a Schiff base complex as a linker is utilized to protect copper nanoparticles to the core-shell Fe3O4 exterior without agglomeration. The resulted Schiff base complex of copper coated on epoxy-modified Fe3O4@SiO2 MNPs was characterized and confirmed via different analyses such as FT-IR, TGA, XRD, VSM, FE-SEM, TEM, ICP, EDX, and BET. The novel catalyst was examined for the synthesis of various chromene-annulated heterocycles through the one-pot three component reaction of aromatic aldehydes, various phenols (2-hydroxynaphthalene-1,4-dione/resorcinol/β-naphthol), and malononitrile in ethanol at reflux conditions. This method includes important aspects like no usage of column chromatography, very short reaction times, simplicity of product isolation using ethanol, excellent yields, simple procedures, and magnetic recoverability of the catalyst. All in all, our method makes a novel and significant advancement in the synthesis of various chromene-annulated heterocycles.
Collapse
Affiliation(s)
- Sobhan Rezayati
- Department
of Chemistry, Faculty of Science, University
of Zanjan, Zanjan 45371-38791, Iran
| | - Ali Ramazani
- Department
of Chemistry, Faculty of Science, University
of Zanjan, Zanjan 45371-38791, Iran
- Department
of Biotechnology, Research Institute of Modern Biological Techniques
(RIMBT), University of Zanjan, Zanjan 45371-38791, Iran
| | - Sami Sajjadifar
- Department
of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
| | - Hamideh Aghahosseini
- Department
of Chemistry, Faculty of Science, University
of Zanjan, Zanjan 45371-38791, Iran
| | - Aram Rezaei
- Nano
Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah 1673-67145, Iran
| |
Collapse
|
3
|
Abstract
Magnetic nanoparticles (MNPs) have attracted growing interest as versatile materials for the development of analytical detection and separation platforms for food safety monitoring. This review discusses recent advances in the synthesis, functionalization and applications of MNPs in bioanalysis. A special emphasis is given to the use of MNPs as an immobilization support for biomolecules and as a target capture and pre-concentration to increase selectivity and sensitivity of analytical platforms for the monitoring of food contaminants. General principles and examples of MNP-based platforms for separation, amplification and detection of analytes of interest in food, including organic and inorganic constituents are discussed.
Collapse
|
4
|
Schwaminger SP, Fraga-García P, Eigenfeld M, Becker TM, Berensmeier S. Magnetic Separation in Bioprocessing Beyond the Analytical Scale: From Biotechnology to the Food Industry. Front Bioeng Biotechnol 2019; 7:233. [PMID: 31612129 PMCID: PMC6776625 DOI: 10.3389/fbioe.2019.00233] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 09/09/2019] [Indexed: 12/25/2022] Open
Abstract
Downstream processing needs more innovative ideas to advance and overcome current bioprocessing challenges. Chromatography is by far the most prevalent technique used by a conservative industrial sector. Chromatography has many advantages but also often represents the most expensive step in a pharmaceutical production process. Therefore, alternative methods as well as further processing strategies are urgently needed. One promising candidate for new developments on a large scale is magnetic separation, which enables the fast and direct capture of target molecules in fermentation broths. There has been a small revolution in this area in the last 10–20 years and a few papers dealing with the use of magnetic separation in bioprocessing examples beyond the analytical scale have been published. Since each target material is purified with a different magnetic separation approach, the comparison of processes is not trivial but would help to understand and improve magnetic separation and thus making it attractive for the technical scale. To address this issue, we report on the latest achievements in magnetic separation technology and offer an overview of the progress of the capture and separation of biomolecules derived from biotechnology and food technology. Magnetic separation has great potential for high-throughput downstream processing in applied life sciences. At the same time, two major challenges need to be overcome: (1) the development of a platform for suitable and flexible separation devices and (2) additional investigations of advantageous processing conditions, especially during recovery. Concentration and purification factors need to be improved to pave the way for the broader use of magnetic applications. The innovative combination of magnetic gradients and multipurpose separations will set new magnetic-based trends for large scale downstream processing.
Collapse
Affiliation(s)
- Sebastian P Schwaminger
- Bioseparation Engineering Group, Department of Mechanical Engineering, Technical University of Munich, Garching, Germany
| | - Paula Fraga-García
- Bioseparation Engineering Group, Department of Mechanical Engineering, Technical University of Munich, Garching, Germany
| | - Marco Eigenfeld
- Research Group Beverage and Cereal Biotechnology, Institute of Brewing and Beverage Technology, Technical University of Munich, Freising, Germany
| | - Thomas M Becker
- Research Group Beverage and Cereal Biotechnology, Institute of Brewing and Beverage Technology, Technical University of Munich, Freising, Germany
| | - Sonja Berensmeier
- Bioseparation Engineering Group, Department of Mechanical Engineering, Technical University of Munich, Garching, Germany
| |
Collapse
|
5
|
Gomes CSG, Fashina A, Fernández‐Castané A, Overton TW, Hobley TJ, Theodosiou E, Thomas ORT. Magnetic hydrophobic-charge induction adsorbents for the recovery of immunoglobulins from antiserum feedstocks by high-gradient magnetic fishing. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY (OXFORD, OXFORDSHIRE : 1986) 2018; 93:1901-1915. [PMID: 30008504 PMCID: PMC6032826 DOI: 10.1002/jctb.5599] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 01/26/2018] [Accepted: 01/26/2018] [Indexed: 05/07/2023]
Abstract
BACKGROUND The extraction of biopharmaceuticals from plasma and serum often employs overly complicated antiquated procedures that can inflict serious damage on especially prone protein targets and which afford low purification power and overall yields. This paper describes systematic development of a high-gradient magnetic fishing process for recovery of immunoglobulins from unclarified antiserum. RESULTS Non-porous superparamagnetic particles were transformed into hydrophobic-charge induction adsorbents and then used to recover immunoglobulins from rabbit antiserum feedstocks. Comprehensive characterisation tests conducted with variously diluted clarified antiserum on a magnetic rack revealed that immunoglobulin binding was rapid (equilibrium reached in <45 s), strong (Kd < 0.1 mg mL-1), of high capacity (Qmax = 214 mg g-1), and pH and ionic strength dependent. In a high-gradient magnetic fishing process conducted with the same adsorbent, and a conventional 'magnetic filter + recycle loop' arrangement, >72% of the immunoglobulin present in an unclarified antiserum feed was recovered in 0.5 h in >3-fold purified form. CONCLUSIONS Fast magnetic particle based capture of antibodies from an unclarified high-titre feed has been demonstrated. Efficient product recovery from ultra-high titre bioprocess liquors by high-gradient magnetic fishing requires that improved magnetic adsorbents displaying high selectivity, ultra-high capacity and operational robustness are used with 'state-of-the-art' rotor-stator magnetic separators. © 2018 The Authors. Journal of Chemical Technology & Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
Collapse
Affiliation(s)
- Cláudia SG Gomes
- Institute of Biotechnology and BiomedicineTechnical University of DenmarkLyngbyDenmark
| | - Adedayo Fashina
- School of Chemical EngineeringUniversity of BirminghamBirminghamUK
| | | | | | - Timothy J Hobley
- National Food InstituteTechnical University of DenmarkLyngbyDenmark
| | | | - Owen RT Thomas
- School of Chemical EngineeringUniversity of BirminghamBirminghamUK
| |
Collapse
|
6
|
Shaikh YS, Seibert C, Kampeis P. Novel In Situ Magnetic Separator for Magnetic Particle-Based Enzyme Purification or Biocatalysis. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201600107] [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]
Affiliation(s)
- Yonas S. Shaikh
- Trier University of Applied Sciences; Environmental Campus Birkenfeld; Institute for Biotechnical Process Design; P.O. Box 1380 55761 Birkenfeld Germany
| | - Christian Seibert
- Trier University of Applied Sciences; Environmental Campus Birkenfeld; Institute for Biotechnical Process Design; P.O. Box 1380 55761 Birkenfeld Germany
| | - Percy Kampeis
- Trier University of Applied Sciences; Environmental Campus Birkenfeld; Institute for Biotechnical Process Design; P.O. Box 1380 55761 Birkenfeld Germany
| |
Collapse
|
7
|
Application of magneto‐responsive Oenococcus oeni for the malolactic fermentation in wine. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.02.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Roth HC, Prams A, Lutz M, Ritscher J, Raab M, Berensmeier S. A High-Gradient Magnetic Separator for Highly Viscous Process Liquors in Industrial Biotechnology. Chem Eng Technol 2016. [DOI: 10.1002/ceat.201500398] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
9
|
High-gradient magnetic separation for technical scale protein recovery using low cost magnetic nanoparticles. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.06.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
10
|
Turcu R, Socoliuc V, Craciunescu I, Petran A, Paulus A, Franzreb M, Vasile E, Vekas L. Magnetic microgels, a promising candidate for enhanced magnetic adsorbent particles in bioseparation: synthesis, physicochemical characterization, and separation performance. SOFT MATTER 2015; 11:1008-1018. [PMID: 25519891 DOI: 10.1039/c4sm02430c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
For specific applications in the field of high gradient magnetic separation of biomaterials, magnetic nanoparticle clusters of controlled size and high magnetic moment in an external magnetic field are of particular interest. We report the synthesis and characterization of magnetic microgels designed for magnetic separation purposes, as well as the separation efficiency of the obtained microgel particles. High magnetization magnetic microgels with superparamagnetic behaviour were obtained in a two-step synthesis procedure by a miniemulsion technique using highly stable ferrofluid on a volatile nonpolar carrier. Spherical clusters of closely packed hydrophobic oleic acid-coated magnetite nanoparticles were coated with cross linked polymer shells of polyacrylic acid, poly-N-isopropylacrylamide, and poly-3-acrylamidopropyl trimethylammonium chloride. The morphology, size distribution, chemical surface composition, and magnetic properties of the magnetic microgels were determined using transmission electron microscopy, X-ray photoelectron spectroscopy, and vibrating sample magnetometry. Magnetically induced phase condensation in aqueous suspensions of magnetic microgels was investigated by optical microscopy and static light scattering. The condensed phase consists of elongated oblong structures oriented in the direction of the external magnetic field and may grow up to several microns in thickness and tens or even hundreds of microns in length. The dependence of phase condensation magnetic supersaturation on the magnetic field intensity was determined. The experiments using high gradient magnetic separation show high values of separation efficiency (99.9-99.97%) for the magnetic microgels.
Collapse
Affiliation(s)
- Rodica Turcu
- National Institute R&D for Isotopic and Molecular Technologies, 67-103 Donat Str., RO-400293 Cluj-Napoca, Romania.
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Controlled heteroaggregation of two types of nanoparticles in an aqueous suspension. J Colloid Interface Sci 2015; 438:235-243. [DOI: 10.1016/j.jcis.2014.09.086] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/24/2014] [Accepted: 09/30/2014] [Indexed: 01/13/2023]
|
12
|
Xu JK, Zhang FF, Sun JJ, Sheng J, Wang F, Sun M. Bio and nanomaterials based on Fe3O4. Molecules 2014; 19:21506-28. [PMID: 25532846 PMCID: PMC6271433 DOI: 10.3390/molecules191221506] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 12/16/2014] [Accepted: 12/17/2014] [Indexed: 12/27/2022] Open
Abstract
During the past few years, nanoparticles have been used for various applications including, but not limited to, protein immobilization, bioseparation, environmental treatment, biomedical and bioengineering usage, and food analysis. Among all types of nanoparticles, superparamagnetic iron oxide nanoparticles, especially Fe3O4, have attracted a great deal of attention due to their unique magnetic properties and the ability of being easily chemical modified for improved biocompatibility, dispersibility. This review covers recent advances in the fabrication of functional materials based on Fe3O4 nanoparticles together with their possibilities and limitations for application in different fields.
Collapse
Affiliation(s)
- Jia-Kun Xu
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Fang-Fang Zhang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Jing-Jing Sun
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Jun Sheng
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Fang Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Mi Sun
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| |
Collapse
|
13
|
Magnetizing of nano-materials on example of Degussa’s P-25 TiO2 photocatalyst: Synthesis of magnetic aggregates, characterization and possible use. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.09.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
14
|
Xu J, Sun J, Wang Y, Sheng J, Wang F, Sun M. Application of iron magnetic nanoparticles in protein immobilization. Molecules 2014; 19:11465-86. [PMID: 25093986 PMCID: PMC6270831 DOI: 10.3390/molecules190811465] [Citation(s) in RCA: 142] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/09/2014] [Accepted: 07/09/2014] [Indexed: 12/18/2022] Open
Abstract
Due to their properties such as superparamagnetism, high surface area, large surface-to-volume ratio, easy separation under external magnetic fields, iron magnetic nanoparticles have attracted much attention in the past few decades. Various modification methods have been developed to produce biocompatible magnetic nanoparticles for protein immobilization. This review provides an updated and integrated focus on the fabrication and characterization of suitable magnetic iron nanoparticle-based nano-active materials for protein immobilization.
Collapse
Affiliation(s)
- Jiakun Xu
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Jingjing Sun
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Yuejun Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Jun Sheng
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Fang Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| | - Mi Sun
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
| |
Collapse
|
15
|
Hu YR, Guo C, Xu L, Wang F, Wang SK, Hu Z, Liu CZ. A magnetic separator for efficient microalgae harvesting. BIORESOURCE TECHNOLOGY 2014; 158:388-391. [PMID: 24656619 DOI: 10.1016/j.biortech.2014.02.120] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 02/24/2014] [Accepted: 02/26/2014] [Indexed: 06/03/2023]
Abstract
A magnetic separator, which consisted of permanent magnet drum, separation chamber and scraper blade, was manufactured for efficient microalgae harvesting. The harvesting efficiency of Chlorella ellipsoidea cells reached more than 95% within forty seconds in each batch operation of microalgae harvesting. In the continuous operation of microalgae harvesting, the harvesting efficiency decreased with increasing the liquid flow rate through the separation chamber and remained more than 95% at the liquid flow rate less than 100mL/min. The developed magnetic separator together with functional magnetic nanoparticles provided a promising method for efficient microalgae harvesting in practice.
Collapse
Affiliation(s)
- Yi-Ru Hu
- National Key Laboratory of Biochemical Engineering & Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Chen Guo
- National Key Laboratory of Biochemical Engineering & Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Ling Xu
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Feng Wang
- National Key Laboratory of Biochemical Engineering & Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Shi-Kai Wang
- National Key Laboratory of Biochemical Engineering & Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Zanmin Hu
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Chun-Zhao Liu
- National Key Laboratory of Biochemical Engineering & Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
| |
Collapse
|
16
|
Brown GN, Müller C, Theodosiou E, Franzreb M, Thomas ORT. Multi-cycle recovery of lactoferrin and lactoperoxidase from crude whey using fimbriated high-capacity magnetic cation exchangers and a novel "rotor-stator" high-gradient magnetic separator. Biotechnol Bioeng 2013; 110:1714-25. [PMID: 23335282 DOI: 10.1002/bit.24842] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 12/14/2012] [Accepted: 01/07/2013] [Indexed: 11/07/2022]
Abstract
Cerium (IV) initiated "graft-from" polymerization reactions were employed to convert M-PVA magnetic particles into polyacrylic acid-fimbriated magnetic cation exchange supports displaying ultra-high binding capacity for basic target proteins. The modifications, which were performed at 25 mg and 2.5 g scales, delivered maximum binding capacities (Qmax ) for hen egg white lysozyme in excess of 320 mg g(-1) , combined with sub-micromolar dissociation constants (0.45-0.69 µm) and "tightness of binding" values greater than 49 L g(-1) . Two batches of polyacrylic acid-fimbriated magnetic cation exchangers were combined to form a 5 g pooled batch exhibiting Qmax values for lysozyme, lactoferrin, and lactoperoxidase of 404, 585, and 685 mg g(-1) , respectively. These magnetic cation exchangers were subsequently employed together with a newly designed "rotor-stator" type HGMF rig, in five sequential cycles of recovery of lactoferrin and lactoperoxidase from 2 L batches of a crude sweet bovine whey feedstock. Lactoferrin purification performance was observed to remain relatively constant from one HGMF cycle to the next over the five operating cycles, with yields between 40% and 49% combined with purification and concentration factors of 37- to 46-fold and 1.3- to 1.6-fold, respectively. The far superior multi-cycle HGMF performance seen here compared to that observed in our earlier studies can be directly attributed to the combined use of improved high capacity adsorbents and superior particle resuspension afforded by the new "rotor-stator" HGMS design.
Collapse
Affiliation(s)
- Geoffrey N Brown
- School of Chemical Engineering, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | | | | | | | | |
Collapse
|
17
|
Food related applications of magnetic iron oxide nanoparticles: Enzyme immobilization, protein purification, and food analysis. Trends Food Sci Technol 2012. [DOI: 10.1016/j.tifs.2012.04.003] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
18
|
Scaling up magnetic filtration and extraction to the ton per hour scale using carbon coated metal nanoparticles. Sep Purif Technol 2012. [DOI: 10.1016/j.seppur.2012.05.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
19
|
Maury TL, Ottow KE, Brask J, Villadsen J, Hobley TJ. Use of high-gradient magnetic fishing for reducing proteolysis during fermentation. Biotechnol J 2012; 7:909-18. [PMID: 22252924 DOI: 10.1002/biot.201100376] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 12/08/2011] [Accepted: 01/13/2012] [Indexed: 11/12/2022]
Abstract
Proteolysis during fermentation may have a severe impact on the yield and quality of a secreted product. In the current study, we demonstrate the use of high-gradient magnetic fishing (HGMF) as an efficient alternative to the more conventional methods of preventing proteolytic degradation. Bacitracin-linked magnetic affinity adsorbents were employed directly in a fermenter during Bacillus licheniformis cultivation to remove trace amounts of unwanted proteases. The constructed magnetic adsorbents had excellent, highly specific binding characteristics in the fermentation broth (K(d) = 1.94 micromolar; Q(max) = 222.8 mg/g), which obeyed the Langmuir isotherm and had rapid binding kinetics (equilibrium in <300 s). When applied directly in shake-flask cultures or in a 1-L fermenter and then removed by HGMF, the degradation of the model protein bovine serum albumin was stopped. The adsorbents could be recycled and reused during the same fermentation to remove freshly produced proteases, extending the life of the model protein in the fermenter. HGMF may provide an efficient method of stabilizing heterologous proteins produced in cultivation processes.
Collapse
Affiliation(s)
- Trine L Maury
- Center for Microbial Biotechnology, Technical University of Denmark, Lyngby, Denmark
| | | | | | | | | |
Collapse
|
20
|
Wu WI, Wu CH, Hong PKA, Lin CF. Capture of metallic copper by high gradient magnetic separation system. ENVIRONMENTAL TECHNOLOGY 2011; 32:1427-1433. [PMID: 22329132 DOI: 10.1080/09593330.2010.538439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Valence copper was recovered from wastewater by chemical reduction and use of a high gradient magnetic separation (HGMS) system. Ammonia (NH3) and sodium dithionate (Na2S2O4) at a molar ratio of [Cu]:[NH3]:[Na2S2O4] = 1:4:3 at pH = 9.5 were used first to chemically reduce copper ion to metallic copper; the resultant metal solids were captured in an upflowing reactor space equipped with a permalloy matrix net under a high gradient magnetic field. The captured solids were predominantly 6-20 microm in diameter, with Cu2O and CuO present among the solids. Four treatment configurations with and without the use of magnetic field and metal alloy as the matrix net were tested and their effects evaluated: (1) no magnetic field or matrix, (2) no magnetic field but with matrix, (3) with magnetic field but no matrix, (4) with both magnetic field and matrix. At flow rates of 40, 60, 80 and 100 cm3/min, capture efficiencies for metallic copper in the absence of magnetic field were 87%, 86%, 63%, and 39%, respectively, and in the presence of magnetic field were 99%, 98%, 95%, and 93%, respectively. The HGMS was critical for a high capture efficiency, whereas a matrix net only marginally enhanced it. Additional tests with a larger reactor confirmed similarly high efficiencies of > 85%. The use of an alloy matrix appeared to be important when high flow rates are most likely to be employed in practical applications.
Collapse
Affiliation(s)
- Wan-I Wu
- Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Road, Taipei 106, Taiwan
| | | | | | | |
Collapse
|
21
|
Eichholz C, Silvestre M, Franzreb M, Nirschl H. Recovery of lysozyme from hen egg white by selective magnetic cake filtration. Eng Life Sci 2011. [DOI: 10.1002/elsc.201000121] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
22
|
Dias AMGC, Hussain A, Marcos AS, Roque ACA. A biotechnological perspective on the application of iron oxide magnetic colloids modified with polysaccharides. Biotechnol Adv 2010; 29:142-55. [PMID: 20959138 DOI: 10.1016/j.biotechadv.2010.10.003] [Citation(s) in RCA: 165] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Revised: 09/29/2010] [Accepted: 10/11/2010] [Indexed: 11/27/2022]
Abstract
Iron oxide magnetic nanoparticles (MNPs) alone are suitable for a broad spectrum of applications, but the low stability and heterogeneous size distribution in aqueous medium represent major setbacks. These setbacks can however be reduced or diminished through the coating of MNPs with various polymers, especially biopolymers such as polysaccharides. Polysaccharides are biocompatible, non-toxic and renewable; in addition, they possess chemical groups that permit further functionalization of the MNPs. Multifunctional entities can be created through decoration with specific molecules e.g. proteins, peptides, drugs, antibodies, biomimetic ligands, transfection agents, cells, and other ligands. This development opens a whole range of applications for iron oxide nanoparticles. In this review the properties of magnetic structures composed of MNPs and several polysaccharides (Agarose, Alginate, Carrageenan, Chitosan, Dextran, Heparin, Gum Arabic, Pullulan and Starch) will be discussed, in view of their recent and future biomedical and biotechnological applications.
Collapse
Affiliation(s)
- A M G C Dias
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | | | | | | |
Collapse
|
23
|
Batalha IL, Hussain A, Roque ACA. Gum Arabic coated magnetic nanoparticles with affinity ligands specific for antibodies. J Mol Recognit 2010; 23:462-71. [DOI: 10.1002/jmr.1013] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
24
|
Lo HF, Hu HY, Hung CP, Chen SC, Lin LL. Cobalt-chelated magnetic particles for one-step purification and immobilization of His6-taggedEscherichia coliγ-glutamyltranspeptidase. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.3109/10242420903219167] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
25
|
Lai JT, Wang WC, Liao CM, Huang TC, Liao CC. Cultivation of Aspergillus phoenicis with high superoxide dismutase-like activity. J Taiwan Inst Chem Eng 2009. [DOI: 10.1016/j.jtice.2009.02.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
26
|
Direct capture of lactoferrin from whey using magnetic micro-ion exchangers in combination with high-gradient magnetic separation. REACT FUNCT POLYM 2007. [DOI: 10.1016/j.reactfunctpolym.2007.07.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
27
|
Schultz N, Syldatk C, Franzreb M, Hobley TJ. Integrated processing and multiple re-use of immobilised lipase by magnetic separation technology. J Biotechnol 2007; 132:202-8. [PMID: 17631974 DOI: 10.1016/j.jbiotec.2007.05.029] [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: 01/03/2007] [Revised: 05/02/2007] [Accepted: 05/25/2007] [Indexed: 11/28/2022]
Abstract
High-gradient magnetic separation based processing is demonstrated for the semi-continuous multicycle re-use of a lipase immobilised on magnetic microparticles. The lipase of Candida antarctica A-type (CALA) was immobilised on polyvinyl alcohol coated magnetic particles (1-2mum diameter) with epoxy functionalisation. The immobilised CALA was used to hydrolyse a model oil-water 2-phase-system composed of a phosphate buffer with tributyrin at up to 3l scale. The immobilised enzyme was subsequently recovered in a magnetic filter using high-gradient magnetic separation and reapplied in repeated cycles of hydrolysis and recovery. Two different temperatures of 30 and 50 degrees C, tributyrin concentrations (0.12 and 35gl(-1)) and reaction times were tested. In each case the reaction was followed by pH titration using NaOH, as well as by HPLC analysis. Consecutive cycles were conducted for each reaction condition and in total the immobilised CALA was subjected to 20 recovery and re-use cycles, after which approximately 14% of the initial specific activity still remained.
Collapse
Affiliation(s)
- Nadja Schultz
- Centre for Microbial Biotechnology, BioCentrum-DTU, Technical University of Denmark, Building 223, DK-2800 Kgs. Lyngby, Denmark
| | | | | | | |
Collapse
|
28
|
Banert T, Peuker UA. SYNTHESIS OF MAGNETIC BEADS FOR BIO-SEPARATION USING THE SOLUTION METHOD. CHEM ENG COMMUN 2007. [DOI: 10.1080/00986440600992750] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
29
|
Low D, O'Leary R, Pujar NS. Future of antibody purification. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 848:48-63. [PMID: 17134947 DOI: 10.1016/j.jchromb.2006.10.033] [Citation(s) in RCA: 356] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2006] [Revised: 09/25/2006] [Accepted: 10/09/2006] [Indexed: 12/29/2022]
Abstract
Antibody purification seems to be safely ensconced in a platform, now well-established by way of multiple commercialized antibody processes. However, natural evolution compels us to peer into the future. This is driven not only by a large, projected increase in the number of antibody therapies, but also by dramatic improvements in upstream productivity, and process economics. Although disruptive technologies have yet escaped downstream processes, evolution of the so-called platform is already evident in antibody processes in late-stage development. Here we perform a wide survey of technologies that are competing to be part of that platform, and provide our [inherently dangerous] assessment of those that have the most promise.
Collapse
|
30
|
Franzreb M, Siemann-Herzberg M, Hobley TJ, Thomas ORT. Protein purification using magnetic adsorbent particles. Appl Microbiol Biotechnol 2006; 70:505-16. [PMID: 16496138 DOI: 10.1007/s00253-006-0344-3] [Citation(s) in RCA: 207] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2005] [Revised: 01/20/2006] [Accepted: 01/20/2006] [Indexed: 11/25/2022]
Abstract
The application of functionalised magnetic adsorbent particles in combination with magnetic separation techniques has received considerable attention in recent years. The magnetically responsive nature of such adsorbent particles permits their selective manipulation and separation in the presence of other suspended solids. Thus, it becomes possible to magnetically separate selected target species directly out of crude biological process liquors (e.g. fermentation broths, cell disruptates, plasma, milk, whey and plant extracts) simply by binding them on magnetic adsorbents before application of a magnetic field. By using magnetic separation in this way, the several stages of sample pretreatment (especially centrifugation, filtration and membrane separation) that are normally necessary to condition an extract before its application on packed bed chromatography columns, may be eliminated. Magnetic separations are fast, gentle, scaleable, easily automated, can achieve separations that would be impossible or impractical to achieve by other techniques, and have demonstrated credibility in a wide range of disciplines, including minerals processing, wastewater treatment, molecular biology, cell sorting and clinical diagnostics. However, despite the highly attractive qualities of magnetic methods on a process scale, with the exception of wastewater treatment, few attempts to scale up magnetic operations in biotechnology have been reported thus far. The purpose of this review is to summarise the current state of development of protein separation using magnetic adsorbent particles and identify the obstacles that must be overcome if protein purification with magnetic adsorbent particles is to find its way into industrial practice.
Collapse
Affiliation(s)
- Matthias Franzreb
- Institute for Technical Chemistry, Forschungszentrum Karlsruhe, Hermann v. Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | | | | | | |
Collapse
|