1
|
Abstract
Membrane chromatography (MC) is an emerging bioseparation technology combining the principles of membrane filtration and chromatography. In this process, one type of molecule is adsorbed in the stationary phase, whereas the other type of molecule is passed through the membrane pores without affecting the adsorbed molecule. In subsequent the step, the adsorbed molecule is recovered by an elution buffer with a unique ionic strength and pH. Functionalized microfiltration membranes are usually used in radial flow, axial flow, and lateral flow membrane modules in MC systems. In the MC process, the transport of a solute to a stationary phase is mainly achieved through convection and minimum pore diffusion. Therefore, mass transfer resistance and pressure drop become insignificant. Other characteristics of MC systems are a minimum clogging tendency in the stationary phase, the capability of operating with a high mobile phase flow rate, and the disposable (short term) application of stationary phase. The development and application of MC systems for the fractionation of individual proteins from whey for investigation and industrial-scale production are promising. A significant income from individual whey proteins together with the marketing of dairy foods may provide a new commercial outlook in dairy industry. In this review, information about the development of a MC system and its applications for the fractionation of individual protein from whey are presented in comprehensive manner.
Collapse
|
2
|
Lu T, Guo W, Datar PM, Xin Y, Marsh ENG, Chen Z. Probing protein aggregation at buried interfaces: distinguishing between adsorbed protein monomers, dimers, and a monomer-dimer mixture in situ. Chem Sci 2022; 13:975-984. [PMID: 35211262 PMCID: PMC8790787 DOI: 10.1039/d1sc04300e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 12/04/2021] [Indexed: 11/21/2022] Open
Abstract
Protein adsorption on surfaces greatly impacts many applications such as biomedical materials, anti-biofouling coatings, bio-separation membranes, biosensors, antibody protein drugs etc. For example, protein drug adsorption on the widely used lubricant silicone oil surface may induce protein aggregation and thus affect the protein drug efficacy. It is therefore important to investigate the molecular behavior of proteins at the silicone oil/solution interface. Such an interfacial study is challenging because the targeted interface is buried. By using sum frequency generation vibrational spectroscopy (SFG) with Hamiltonian local mode approximation method analysis, we studied protein adsorption at the silicone oil/protein solution interface in situ in real time, using bovine serum albumin (BSA) as a model. The results showed that the interface was mainly covered by BSA dimers. The deduced BSA dimer orientation on the silicone oil surface from the SFG study can be explained by the surface distribution of certain amino acids. To confirm the BSA dimer adsorption, we treated adsorbed BSA dimer molecules with dithiothreitol (DTT) to dissociate these dimers. SFG studies on adsorbed BSA after the DTT treatment indicated that the silicone oil surface is covered by BSA dimers and BSA monomers in an approximate 6 : 4 ratio. That is to say, about 25% of the adsorbed BSA dimers were converted to monomers after the DTT treatment. Extensive research has been reported in the literature to determine adsorbed protein dimer formation using ex situ experiments, e.g., by washing off the adsorbed proteins from the surface then analyzing the washed-off proteins, which may induce substantial errors in the washing process. Dimerization is a crucial initial step for protein aggregation. This research developed a new methodology to investigate protein aggregation at a solid/liquid (or liquid/liquid) interface in situ in real time using BSA dimer as an example, which will greatly impact many research fields and applications involving interfacial biological molecules.
Collapse
Affiliation(s)
- Tieyi Lu
- Department of Chemistry, University of Michigan Ann Arbor Michigan 48109 USA
| | - Wen Guo
- Department of Chemistry, University of Michigan Ann Arbor Michigan 48109 USA
| | - Prathamesh M Datar
- Department of Chemistry, University of Michigan Ann Arbor Michigan 48109 USA
| | - Yue Xin
- Department of Chemistry, University of Michigan Ann Arbor Michigan 48109 USA
| | - E Neil G Marsh
- Department of Chemistry, University of Michigan Ann Arbor Michigan 48109 USA
| | - Zhan Chen
- Department of Chemistry, University of Michigan Ann Arbor Michigan 48109 USA
| |
Collapse
|
3
|
Gandhimathi C, Sundarrajan S, Matsuura T, Srinivasan DK, Wei H, Xuecheng D, Ramakrishna S. Fabrication and characterization of high flux poly(vinylidene fluoride) electrospun nanofibrous membrane using amphiphilic polyethylene‐block‐poly(ethylene glycol) copolymer. J Appl Polym Sci 2020. [DOI: 10.1002/app.50296] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chinnasamy Gandhimathi
- Temasek Lifesciences Laboratory National University of Singapore Singapore
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering National University of Singapore Singapore
| | - Subramanian Sundarrajan
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering National University of Singapore Singapore
| | - Takeshi Matsuura
- Industrial Membrane Research Institute, Department of Chemical and Biological Engineering University of Ottawa Ottawa Ontario Canada
| | | | - He Wei
- Singapore Institute of Manufacturing Technology, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way Singapore
| | - Dong Xuecheng
- Singapore Institute of Manufacturing Technology, A*STAR (Agency for Science Technology and Research), 2 Fusionopolis Way Singapore
| | - Seeram Ramakrishna
- Center for Nanofibers and Nanotechnology, Department of Mechanical Engineering, Faculty of Engineering National University of Singapore Singapore
| |
Collapse
|
4
|
|
5
|
Muthukumar S, Rathore AS. Use of polymeric membranes for purification of an E. coli expressed biotherapeutic protein. Prep Biochem Biotechnol 2015; 46:183-91. [DOI: 10.1080/10826068.2015.1045609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Muthukumar
- Department of Chemical Engineering, Indian Institute of Technology, Hauz Khas, New Delhi, India
| | - Anurag S. Rathore
- Department of Chemical Engineering, Indian Institute of Technology, Hauz Khas, New Delhi, India
| |
Collapse
|
6
|
Kumeria T, Santos A, Losic D. Nanoporous anodic alumina platforms: engineered surface chemistry and structure for optical sensing applications. SENSORS (BASEL, SWITZERLAND) 2014; 14:11878-918. [PMID: 25004150 PMCID: PMC4168464 DOI: 10.3390/s140711878] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/23/2014] [Accepted: 06/25/2014] [Indexed: 12/27/2022]
Abstract
Electrochemical anodization of pure aluminum enables the growth of highly ordered nanoporous anodic alumina (NAA) structures. This has made NAA one of the most popular nanomaterials with applications including molecular separation, catalysis, photonics, optoelectronics, sensing, drug delivery, and template synthesis. Over the past decades, the ability to engineer the structure and surface chemistry of NAA and its optical properties has led to the establishment of distinctive photonic structures that can be explored for developing low-cost, portable, rapid-response and highly sensitive sensing devices in combination with surface plasmon resonance (SPR) and reflective interference spectroscopy (RIfS) techniques. This review article highlights the recent advances on fabrication, surface modification and structural engineering of NAA and its application and performance as a platform for SPR- and RIfS-based sensing and biosensing devices.
Collapse
Affiliation(s)
- Tushar Kumeria
- School of Chemical Engineering, Engineering North Building, The University of Adelaide, North Terrace Campus, Adelaide SA 5005, Australia.
| | - Abel Santos
- School of Chemical Engineering, Engineering North Building, The University of Adelaide, North Terrace Campus, Adelaide SA 5005, Australia.
| | - Dusan Losic
- School of Chemical Engineering, Engineering North Building, The University of Adelaide, North Terrace Campus, Adelaide SA 5005, Australia.
| |
Collapse
|
7
|
Lee W, Park SJ. Porous Anodic Aluminum Oxide: Anodization and Templated Synthesis of Functional Nanostructures. Chem Rev 2014; 114:7487-556. [DOI: 10.1021/cr500002z] [Citation(s) in RCA: 905] [Impact Index Per Article: 90.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Woo Lee
- Korea Research Institute of Standards and Science (KRISS), Yuseong, 305-340 Daejeon, Korea
- Department
of Nano Science, University of Science and Technology (UST), Yuseong, 305-333 Daejeon, Korea
| | - Sang-Joon Park
- Korea Research Institute of Standards and Science (KRISS), Yuseong, 305-340 Daejeon, Korea
| |
Collapse
|
8
|
Debrassi A, Ribbera A, de Vos WM, Wennekes T, Zuilhof H. Stability of (bio)functionalized porous aluminum oxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1311-1320. [PMID: 24471580 DOI: 10.1021/la403525z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Porous aluminum oxide (PAO), a nanostructured support for, among others, culturing microorganisms, was chemically modified in order to attach biomolecules that can selectively interact with target bacteria. We present the first comprehensive study of monolayer-modified PAO using conditions that are relevant to microbial growth with a range of functional groups (carboxylic acid, α-hydroxycarboxylic acid, alkyne, alkene, phosphonic acid, and silane). Their stability was initially assessed in phosphate-buffered saline (pH 7.0) at room temperature. The most stable combination (PAO with phosphonic acids) was further studied over a range of physiological pHs (4-8) and temperatures (up to 80 °C). Varying the pH had no significant effect on the stability, but it gradually decreased with increasing temperature. The stability of phosphonic acid-modified PAO surfaces was shown to depend strongly on the other terminal group of the monolayer structure: in general, hydrophilic monolayers were less stable than hydrophobic monolayers. Finally, an alkyne-terminated PAO surface was reacted with an azide-linked mannose derivative. The resulting mannose-presenting PAO surface showed the clearly increased adherence of a mannose-binding bacterium, Lactobacillus plantarum, and also allowed for bacterial outgrowth.
Collapse
Affiliation(s)
- Aline Debrassi
- Laboratory of Organic Chemistry, Wageningen University , Dreijenplein 8, 6703 HB Wageningen, The Netherlands
| | | | | | | | | |
Collapse
|
9
|
Saufi SM, Fee CJ. Mixed matrix membrane chromatography based on hydrophobic interaction for whey protein fractionation. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.05.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
10
|
Treccani L, Yvonne Klein T, Meder F, Pardun K, Rezwan K. Functionalized ceramics for biomedical, biotechnological and environmental applications. Acta Biomater 2013; 9:7115-50. [PMID: 23567940 DOI: 10.1016/j.actbio.2013.03.036] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Revised: 03/21/2013] [Accepted: 03/23/2013] [Indexed: 12/12/2022]
Abstract
Surface functionalization has become of paramount importance and is considered a fundamental tool for the development and design of countless devices and engineered systems for key technological areas in biomedical, biotechnological and environmental applications. In this review, surface functionalization strategies for alumina, zirconia, titania, silica, iron oxide and calcium phosphate are presented and discussed. These materials have become particularly important concerning the aforementioned applications, being not only of great academic, but also of steadily increasing human and commercial, interest. In this review, special emphasis is given to their use as biomaterials, biosensors, biological targets, drug delivery systems, implants, chromatographic supports for biomolecule purification and analysis, and adsorbents for toxic substances and pollutants. The objective of this review is to provide a broad picture of the enormous possibilities offered by surface functionalization and to identify particular challenges regarding surface analysis and characterization.
Collapse
Affiliation(s)
- Laura Treccani
- University of Bremen, Advanced Ceramics, Am Biologischen Garten 2, 28359 Bremen, Germany.
| | | | | | | | | |
Collapse
|
11
|
Orr V, Zhong L, Moo-Young M, Chou CP. Recent advances in bioprocessing application of membrane chromatography. Biotechnol Adv 2013; 31:450-65. [DOI: 10.1016/j.biotechadv.2013.01.007] [Citation(s) in RCA: 150] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Accepted: 01/20/2013] [Indexed: 01/03/2023]
|
12
|
Lazzara TD, Behn D, Kliesch TT, Janshoff A, Steinem C. Phospholipids as an alternative to direct covalent coupling: Surface functionalization of nanoporous alumina for protein recognition and purification. J Colloid Interface Sci 2012; 366:57-63. [DOI: 10.1016/j.jcis.2011.09.067] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 09/23/2011] [Accepted: 09/24/2011] [Indexed: 11/28/2022]
|
13
|
ter Maat J, Regeling R, Ingham CJ, Weijers CAGM, Giesbers M, de Vos WM, Zuilhof H. Organic modification and subsequent biofunctionalization of porous anodic alumina using terminal alkynes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:13606-13617. [PMID: 21962228 DOI: 10.1021/la203738h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Porous anodic alumina (PAA) is a well-defined material that has found many applications. The range of applications toward sensing and recognition can be greatly expanded if the alumina surface is covalently modified with an organic monolayer. Here, we present a new method for the organic modification of PAA based on the reaction of terminal alkynes with the alumina surface. The reaction results in the the formation of a monolayer within several hours at 80 °C and is dependent on both oxygen and light. Characterization with X-ray photoelectron spectroscopy and infrared spectroscopy indicates formation of a well-defined monolayer in which the adsorbed species is an oxidation product of the 1-alkyne, namely, its α-hydroxy carboxylate. The obtained monolayers are fairly stable in water and at elevated temperatures, as was shown by monitoring the water contact angle. Modification with 1,15-hexadecadiyne resulted in a surface that has alkyne end groups available for further reaction, as was demonstrated by the subsequent reaction of N-(11-azido-3,6,9-trioxaundecyl)trifluoroacetamide with the modified surface. Biofunctionalization was explored by coupling 11-azidoundecyl lactoside to the surface and studying the subsequent adsorption of the lectin peanut agglutinin (PNA) and the yeast Candida albicans, respectively. Selective and reversible binding of PNA to the lactosylated surfaces was demonstrated. Moreover, PNA adsorption was higher on surfaces that exposed the β-lactoside than on those that displayed the α anomer, which was attributed to surface-associated steric hindrance. Likewise, the lactosylated surfaces showed increased colonization of C. albicans compared to unmodified surfaces, presumably due to interactions involving the cell wall β-glucan. Thus, this study provides a new modification method for PAA surfaces and shows that it can be used to induce selective adsorption of proteins and microorganisms.
Collapse
Affiliation(s)
- Jurjen ter Maat
- Laboratory of Organic Chemistry, Wageningen University, Dreijenplein 8, 6703 HB Wageningen, The Netherlands
| | | | | | | | | | | | | |
Collapse
|
14
|
Ingham CJ, ter Maat J, de Vos WM. Where bio meets nano: the many uses for nanoporous aluminum oxide in biotechnology. Biotechnol Adv 2011; 30:1089-99. [PMID: 21856400 DOI: 10.1016/j.biotechadv.2011.08.005] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 07/28/2011] [Accepted: 08/03/2011] [Indexed: 01/17/2023]
Abstract
Porous aluminum oxide (PAO) is a ceramic formed by an anodization process of pure aluminum that enables the controllable assembly of exceptionally dense and regular nanopores in a planar membrane. As a consequence, PAO has a high porosity, nanopores with high aspect ratio, biocompatibility and the potential for high sensitivity imaging and diverse surface modifications. These properties have made this unusual material attractive to a disparate set of applications. This review examines how the structure and properties of PAO connect with its present and potential uses within research and biotechnology. The role of PAO is covered in areas including microbiology, mammalian cell culture, sensitive detection methods, microarrays and other molecular assays, and in creating new nanostructures with further uses within biology.
Collapse
|
15
|
Hozumi A, McCarthy TJ. Ultralyophobic oxidized aluminum surfaces exhibiting negligible contact angle hysteresis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:2567-2573. [PMID: 20030348 DOI: 10.1021/la9028518] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Ultralyophobic oxidized aluminum surfaces exhibiting negligible contact angle hysteresis for probe liquids were prepared by chemical vapor deposition (CVD) of bis((tridecafluoro-1,1,2,2,-tetrahydrooctyl)-dimethylsiloxy)methylsilane (CF(3)(CF(2))(5)CH(2)CH(2)Si(CH(3))(2)O)(2)SiCH(3)H, (R(F)Si(Me)(2)O)(2)SiMeH). Oxidized aluminum surfaces were prepared by photooxidation/cleaning of sputter-coated aluminum on silicon wafers (Si/Al(Al(2)(O(3)))) using oxygen plasma. X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) confirmed that this facile CVD method produces a monolayer with a thickness of 1.1 nm on the Si/Al(Al(2)(O(3))) surface without a discernible change in surface morphology. After monolayer deposition, the hydrophilic Si/Al(Al(2)(O(3))) surface became both hydrophobic and oleophobic and exhibited essentially no contact angle hysteresis for water and n-hexadecane (advancing/receding contact angles (theta(A)/theta(R)) = 110 degrees/109 degrees and 52 degrees/50 degrees, respectively). Droplets move very easily on this surface and roll off of slightly tilted surfaces, independently of the contact angle (which is a practical definition of ultralyophobic). A conventional fluoroalkylsilane monolayer was also prepared from 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (CF(3)(CF(2))(7)CH(2)CH(2)Si(OCH(3))(3), R(F)Si(OMe)(3)) for comparison. The theta(A)/theta(R) values for water and n-hexadecane are 121 degrees/106 degrees and 76 degrees/71 degrees, respectively. The larger hysteresis values indicate the "pinning" of probe liquids, even though advancing contact angles are larger than those of the (R(F)Si(Me)(2)O)(2)SiMeH-derived monolayers. The (R(F)Si(Me)(2)O)(2)SiMeH-derived monolayers have excellent hydrolytic stability in water. We propose that the (R(F)Si(Me)(2)O)(2)SiMeH-derived monolayers are flexible and liquidlike and that drops in contact with these surfaces experience very low energy barriers between metastable states, leading to the formation of nonhysteretic ultralyophobic surfaces.
Collapse
Affiliation(s)
- Atsushi Hozumi
- National Institute of Advanced Industrial Science & Technology, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan.
| | | |
Collapse
|
16
|
|
17
|
Yang Y, Vaidyanathan N, Weber SG. Porous alumina-based fluorous liquid membranes: Dependence of transport on fluorous solvent. J Fluor Chem 2009. [DOI: 10.1016/j.jfluchem.2009.08.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
18
|
Losic D, Simovic S. Self-ordered nanopore and nanotube platforms for drug delivery applications. Expert Opin Drug Deliv 2009; 6:1363-81. [DOI: 10.1517/17425240903300857] [Citation(s) in RCA: 184] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Dusan Losic
- University of South Australia, Ian Wark Research Institute, Mawson Lakes Campus, Mawson Lakes, Adelaide, SA 5095, Australia ;
| | - Spomenka Simovic
- University of South Australia, Ian Wark Research Institute, Mawson Lakes Campus, Mawson Lakes, Adelaide, SA 5095, Australia ;
| |
Collapse
|
19
|
Han J, Silcock P, McQuillan AJ, Bremer P. Bovine serum albumin adsorption on N-methyl-d-glucamine modified colloidal silica. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.08.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
20
|
Feng Z, Shao Z, Yao J, Huang Y, Chen X. Protein adsorption and separation with chitosan-based amphoteric membranes. POLYMER 2009. [DOI: 10.1016/j.polymer.2008.12.046] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
21
|
Tanvir S, Pantigny J, Morandat S, Pulvin S. Development of immobilization technique for liver microsomes. Colloids Surf B Biointerfaces 2009; 68:178-83. [DOI: 10.1016/j.colsurfb.2008.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2008] [Revised: 09/24/2008] [Accepted: 10/01/2008] [Indexed: 11/27/2022]
|
22
|
Preparation of inorganic–organic anion-exchange membranes and their application in plasmid DNA and RNA separation. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2007.12.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
23
|
Chen YS, Chang CS, Suen SY. Protein adsorption separation using glass fiber membranes modified with short-chain organosilicon derivatives. J Memb Sci 2007. [DOI: 10.1016/j.memsci.2007.07.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
24
|
Bayramoğlu G, Loğoğlu E, Arica MY. Cytochrome c adsorption on glutamic acid ligand immobilized magnetic poly(methylmethacrylate-co-glycidylmethacrylate) beads. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.10.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
25
|
Tewari BB, Hamid N. Interaction of glycine and β-alanine with nickel, cobalt and cadmium ferrocyanides. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
26
|
Preparation and characterization of sulfonyl-hydrazine attached poly(styrene-divinylbenzene) beads for separation of albumin. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.07.043] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
27
|
Bayramo??lu G, Arıca MY. Synthesis and spectroscopic characterization of superparamagnetic beads of copolymers of methacrylic acid, methyl methacrylate and ethylene glycol dimethacrylate and their application to protein separation. POLYM INT 2007. [DOI: 10.1002/pi.2313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
28
|
Arica MY, Akyol AB, Bayramoğlu G. Adsorption of trypsin onto magnetic ion-exchange beads of poly(glycidylmethacrylate-co-ethyleneglycoldimethacrylate). J Appl Polym Sci 2007. [DOI: 10.1002/app.27062] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|