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Lv W, Yuan Q, Huang W, Sun X, Zhou W, Zhao Y. Effects of reduced salinity caused by reclamation on population and physiological characteristics of the sesarmid crab Chiromantes dehaani. Sci Rep 2022; 12:1591. [PMID: 35102243 PMCID: PMC8804004 DOI: 10.1038/s41598-022-05639-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 01/10/2022] [Indexed: 11/12/2022] Open
Abstract
Reduced salinity is a major factor that causes macrobenthic degradation in reclaimed wetlands. We investigated populations of the sesarmid crab Chiromantes dehaani in reclaimed and natural wetlands. Then, in the laboratory, we exposed male and female crabs to four salinity levels (0, 6, 12 and 18) for 96 h to analyse the effects of reduced salinity on osmoregulatory enzyme activities in the posterior gills and digestive and immune enzyme activities in the hepatopancreas of C. dehaani. The results revealed a significant positive correlation between the number of crabs and salinity. In the laboratory, we found that the isosmotic point of C. dehaani was close to 16 ppt. The crabs showed strong hyper-osmotic regulation when exposed to 0–6 ppt salinities. Moreover, in this salinity range, amylase activities were significantly inhibited. Under low-salinity stress, the immune enzyme activities were significantly activated. However, phenoloxidase and lysozyme activities were inhibited in the freshwater environment. The male and female crabs showed no significant differences in most of the enzyme activities. Thus, reduced salinity can adversely affect the digestive and immune functions of C. dehaani, which may cause population degradation in reclaimed wetlands. Our findings can provide new insights into the effects of reclamation on macrobenthos.
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Affiliation(s)
- Weiwei Lv
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.,Shanghai Runzhuang Agricultural Technology Co., Ltd, Shanghai, 201403, China
| | - Quan Yuan
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.,Shanghai Runzhuang Agricultural Technology Co., Ltd, Shanghai, 201403, China
| | - Weiwei Huang
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Xiaolin Sun
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.,Shanghai Runzhuang Agricultural Technology Co., Ltd, Shanghai, 201403, China
| | - Wenzong Zhou
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China. .,Shanghai Runzhuang Agricultural Technology Co., Ltd, Shanghai, 201403, China.
| | - Yunlong Zhao
- School of Life Sciences, East China Normal University, Shanghai, 200241, China.
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Al-Odayni AB, Saeed WS, Ahmed AYBH, Alrahlah A, Al-Kahtani A, Aouak T. New Monomer Based on Eugenol Methacrylate, Synthesis, Polymerization and Copolymerization with Methyl Methacrylate-Characterization and Thermal Properties. Polymers (Basel) 2020; 12:polym12010160. [PMID: 31936234 PMCID: PMC7023370 DOI: 10.3390/polym12010160] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 01/01/2020] [Accepted: 01/05/2020] [Indexed: 11/22/2022] Open
Abstract
Poly(eugenyl-2-hydroxypropyl methacrylate) (PEUGMA), poly(methyl methacrylate) (PMMA) and poly(eugenyl-2-hydroxypropyl methacrylate-co-methyl methacrylate) (PEUGMA-co-MMA) were synthesized by a free radical polymerization route in the presence of azobisisobutyronitrile. EUGMA was synthesized by etherification of the eugenol phenolic hydroxyl group with glycidyl methacrylate. Polymers and copolymers were characterized using size exclusion chromatography, Fourier transform infrared, and nuclear magnetic resonance. The effects of the encumbering substituent on the thermal behavior of the polymers and copolymers were studied by differential scanning calorimetry, thermogravimetry (TG) and direct analysis, using real-time, time-of-flight mass spectroscopy (DART-ToF-MS) methods. The results obtained revealed that for PEUGMA, the average molecular weight was 1.08 × 105, and increased slowly with the decrease in the EUGMA content in the copolymer. The order of the distribution of dyads comonomer units in the copolymer chains estimated by the Igarashi method based on the reactivity ratio does reveal a random distribution with a tendency toward alternation. The glass transition temperature of PEUGMA (46 °C) increased with the MMA content in the copolymer, and those of the copolymer fit well with the Johnston’s linearized expression. The TG analysis of pure PEUGMA revealed a significantly high thermal stability compared to that of PMMA. During its degradation, the preliminary decomposition was at 340 °C, and decreased as the MMA units increased in the copolymer. The DART-ToF-MS analysis revealed that the isothermal decomposition of PEUGMA led to a regeneration of raw materials such as EUGMA, GMA and EUG, in which the maximum amount was achieved at 450 °C.
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Affiliation(s)
- Abdel-Basit Al-Odayni
- Chemistry Department, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia; (A.-B.A.-O.); (W.S.S.); (A.Y.B.H.A.); (A.A.-K.)
- Engineer Abdullah Bugshan Research Chair for Dental and Oral Rehabilitation, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Waseem Sharaf Saeed
- Chemistry Department, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia; (A.-B.A.-O.); (W.S.S.); (A.Y.B.H.A.); (A.A.-K.)
- Engineer Abdullah Bugshan Research Chair for Dental and Oral Rehabilitation, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Ahmed Yacine Badjah Hadj Ahmed
- Chemistry Department, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia; (A.-B.A.-O.); (W.S.S.); (A.Y.B.H.A.); (A.A.-K.)
| | - Ali Alrahlah
- Engineer Abdullah Bugshan Research Chair for Dental and Oral Rehabilitation, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
- Restorative Dental Sciences Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
- Correspondence: (A.A.); (T.A.)
| | - Abdullah Al-Kahtani
- Chemistry Department, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia; (A.-B.A.-O.); (W.S.S.); (A.Y.B.H.A.); (A.A.-K.)
| | - Taieb Aouak
- Chemistry Department, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia; (A.-B.A.-O.); (W.S.S.); (A.Y.B.H.A.); (A.A.-K.)
- Correspondence: (A.A.); (T.A.)
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Chanphai P, Agudelo D, Tajmir-Riahi HA. PEG and mPEG-anthracene conjugate with trypsin and trypsin inhibitor: hydrophobic and hydrophilic contacts. J Biomol Struct Dyn 2017; 35:2257-2268. [PMID: 27434220 DOI: 10.1080/07391102.2016.1214621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 07/14/2016] [Indexed: 12/23/2022]
Abstract
The conjugation of trypsin (try) and trypsin inhibitor (tryi) with poly(ethylene glycol) (PEG) and methoxypoly(ethylene glycol) anthracene (mPEG-anthracene) was investigated in aqueous solution, using multiple spectroscopic methods, thermodynamic analysis, and molecular modeling. Thermodynamic parameters ΔS, ΔH, and ΔG showed protein-PEG bindings occur via H-bonding and van der Waals contacts with trypsin inhibitor forming more stable conjugate than trypsin. As polymer size increased more stable PEG-protein conjugate formed, while hydrophobic mPEG-anthracene forms less stable protein complexes. Modeling showed the presence of several H-bonding contacts between polymer and amino acids that stabilize protein-polymer conjugation. Polymer complexation induces more perturbations of trypsin inhibitor structure than trypsin with reduction of protein alpha-helix and major increase in random structures, indicating protein structural destabilization.
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Affiliation(s)
- P Chanphai
- a Department of Chemistry-Biochemistry and Physics , University of Québec at Trois-Rivières , C. P. 500, Trois-Rivieres G9A 5H7 , Quebec , Canada
| | - D Agudelo
- a Department of Chemistry-Biochemistry and Physics , University of Québec at Trois-Rivières , C. P. 500, Trois-Rivieres G9A 5H7 , Quebec , Canada
| | - H A Tajmir-Riahi
- a Department of Chemistry-Biochemistry and Physics , University of Québec at Trois-Rivières , C. P. 500, Trois-Rivieres G9A 5H7 , Quebec , Canada
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Chanphai P, Kreplak L, Tajmir-Riahi HA. Aggregation of trypsin and trypsin inhibitor by Al cation. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 169:7-12. [PMID: 28246055 DOI: 10.1016/j.jphotobiol.2017.02.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 02/16/2017] [Accepted: 02/21/2017] [Indexed: 11/26/2022]
Abstract
Al cation may trigger protein structural changes such as aggregation and fibrillation, causing neurodegenerative diseases. We report the effect of Al cation on the solution structures of trypsin (try) and trypsin inhibitor (tryi), using thermodynamic analysis, UV-Visible, Fourier transform infrared (FTIR) spectroscopic methods and atomic force microscopy (AFM). Thermodynamic parameters showed Al-protein bindings occur via H-bonding and van der Waals contacts for trypsin and trypsin inhibitor. AFM showed that Al cations are able to force trypsin into larger or more robust aggregates than trypsin inhibitor, with trypsin 5±1 SE (n=52) proteins per aggregate and for trypsin inhibitor 8.3±0.7 SE (n=118). Thioflavin T test showed no major protein fibrillation in the presence of Al cation. Al complexation induced more alterations of trypsin inhibitor conformation than trypsin.
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Affiliation(s)
- P Chanphai
- Department of Chemistry-Biochemistry, Physics University of Québec, Trois-Rivières, C. P. 500, TR, Quebec G9A 5H7, Canada
| | - L Kreplak
- Department of Physics and Atmospheric Science, Sir James Dunn Building Dalhousie University, Lord Dalhousie Drive, Halifax NS B3H 4R2, Canada
| | - H A Tajmir-Riahi
- Department of Chemistry-Biochemistry, Physics University of Québec, Trois-Rivières, C. P. 500, TR, Quebec G9A 5H7, Canada.
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Abstract
Aminophenyl boronic acid (APBA) modified hydrogel beads were prepared as a new sorbent for nucleotide isolation. Spherical hydrogel beads, obtained by suspension copolymerization, were the base material for the sorbent. The carboxyl groups on the gel bead surface were activated with a water soluble carbodiimide, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC). APBA was then covalently attached to the activated structure via the amine groups. The maximum APBA attached to the gel was 34mg/g. The reversible adsorption-desorption behavior of β-nicotinamide adenine dinucleotide (β-NAD) was investigated by using 3.5 and 34mg/g of APBA on the hydrogel beads. The equilibrium -NAD adsorption capacities for these beads were determined as approximately 25 and 100mg/g, respectively. The -NAD absorption capacity of these APBA beads is significantly greater than similar supports.
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Affiliation(s)
- Hüseyin ÇIçek
- Engineering Development Group, Roketsan Corporation, Elmadag, Ankara, Turkey,
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Chanphai P, Tajmir-Riahi H. Chitosan nanoparticles conjugate with trypsin and trypsin inhibitor. Carbohydr Polym 2016; 144:346-52. [DOI: 10.1016/j.carbpol.2016.02.066] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/15/2016] [Accepted: 02/22/2016] [Indexed: 01/23/2023]
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Chanphai P, Tajmir-Riahi H. Trypsin and trypsin inhibitor bind PAMAM nanoparticles: Effect of hydrophobicity on protein–polymer conjugation. J Colloid Interface Sci 2016; 461:419-424. [DOI: 10.1016/j.jcis.2015.09.048] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 09/20/2015] [Accepted: 09/21/2015] [Indexed: 12/20/2022]
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Derr L, Dringen R, Treccani L, Hildebrand N, Ciacchi LC, Rezwan K. Physisorption of enzymatically active chymotrypsin on titania colloidal particles. J Colloid Interface Sci 2015; 455:236-44. [DOI: 10.1016/j.jcis.2015.05.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/12/2015] [Accepted: 05/12/2015] [Indexed: 10/23/2022]
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Stolarow J, Heinzelmann M, Yeremchuk W, Syldatk C, Hausmann R. Immobilization of trypsin in organic and aqueous media for enzymatic peptide synthesis and hydrolysis reactions. BMC Biotechnol 2015; 15:77. [PMID: 26286267 PMCID: PMC4545374 DOI: 10.1186/s12896-015-0196-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 08/12/2015] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Immobilization of enzymes onto different carriers increases enzyme's stability and reusability within biotechnological and pharmaceutical applications. However, some immobilization techniques are associated with loss of enzymatic specificity and/or activity. Possible reasons for this loss are mass transport limitations or structural changes. For this reason an immobilization method must be selected depending on immobilisate's demands. In this work different immobilization media were compared towards the synthetic and hydrolytic activities of immobilized trypsin as model enzyme on magnetic micro-particles. RESULTS Porcine trypsin immobilization was carried out in organic and aqueous media with magnetic microparticles. The immobilization conditions in organic solvent were optimized for a peptide synthesis reaction. The highest carrier activity was achieved at 1 % of water (v/v) in dioxane. The resulting immobilizate could be used over ten cycles with activity retention of 90 % in peptide synthesis reaction in 80 % (v/v) ethanol and in hydrolysis reaction with activity retention of 87 % in buffered aqueous solution. Further, the optimized method was applied in peptide synthesis and hydrolysis reactions in comparison to an aqueous immobilization method varying the protein input. The dioxane immobilization method showed a higher activity coupling yield by factor 2 in peptide synthesis with a maximum activity coupling yield of 19.2 % compared to aqueous immobilization. The hydrolysis activity coupling yield displayed a maximum value of 20.4 % in dioxane immobilization method while the aqueous method achieved a maximum value of 38.5 %. Comparing the specific activity yields of the tested immobilization methods revealed maximum values of 5.2 % and 100 % in peptide synthesis and 33.3 % and 87.5 % in hydrolysis reaction for the dioxane and aqueous method, respectively. CONCLUSIONS By immobilizing trypsin in dioxane, a beneficial effect on the synthetic trypsin activity resilience compared to aqueous immobilization medium was shown. The results indicate a substantial potential of the micro-aqueous organic protease immobilization method for preservation of enzymatic activity during enzyme coupling step. These results may be of substantial interest for enzymatic peptide synthesis reactions at mild conditions with high selectivity in industrial drug production.
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Affiliation(s)
- Julia Stolarow
- Institute of Process Engineering in Life Sciences, Section II: Technical Biology, Karlsruhe Institute of Technology (KIT), Engler-Bunte-Ring 1, 76131, Karlsruhe, Germany.
| | - Manuel Heinzelmann
- Institute of Process Engineering in Life Sciences, Section II: Technical Biology, Karlsruhe Institute of Technology (KIT), Engler-Bunte-Ring 1, 76131, Karlsruhe, Germany
| | - Wladimir Yeremchuk
- Institute of Process Engineering in Life Sciences, Section II: Technical Biology, Karlsruhe Institute of Technology (KIT), Engler-Bunte-Ring 1, 76131, Karlsruhe, Germany
| | - Christoph Syldatk
- Institute of Process Engineering in Life Sciences, Section II: Technical Biology, Karlsruhe Institute of Technology (KIT), Engler-Bunte-Ring 1, 76131, Karlsruhe, Germany
| | - Rudolf Hausmann
- Institute of Food Science and Biotechnology, Section Bioprocess Engineering (150k), University of Hohenheim, Garbenstr. 25, 70599, Stuttgart, Germany
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Atacan K, Özacar M. Characterization and immobilization of trypsin on tannic acid modified Fe3O4 nanoparticles. Colloids Surf B Biointerfaces 2015; 128:227-236. [DOI: 10.1016/j.colsurfb.2015.01.038] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 01/01/2015] [Accepted: 01/23/2015] [Indexed: 10/24/2022]
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Vaidya BK, Ingavle GC, Ponrathnam S, Nene SN. Poly(allyl glycidyl ether-co-ethylene glycol dimethacrylate) copolymer beads as support for covalent immobilization of l-aminoacylase. REACT FUNCT POLYM 2012. [DOI: 10.1016/j.reactfunctpolym.2012.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Shih YH, Lo SH, Yang NS, Singco B, Cheng YJ, Wu CY, Chang IH, Huang HY, Lin CH. Trypsin-Immobilized Metal-Organic Framework as a Biocatalyst In Proteomics Analysis. Chempluschem 2012. [DOI: 10.1002/cplu.201200186] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Thudi L, Jasti LS, Swarnalatha Y, Fadnavis NW, Mulani K, Deokar S, Ponrathnam S. Enzyme immobilization on epoxy supports in reverse micellar media: Prevention of enzyme denaturation. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2011.08.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Reichelt S, Elsner C, Pender A, Buchmeiser MR. Tailoring the surface of magnetic microparticles for protein immobilization. J Appl Polym Sci 2011. [DOI: 10.1002/app.34153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bae IA, Park JH, Choi SH. Synthesis of chiral stationary phase via surface-initiated atom transfer radical polymerization of vinylated cellulose 3,5-dimethylphenylcarbamate. POLYM INT 2011. [DOI: 10.1002/pi.3027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Podkościelna B. Synthesis, modification, and porous properties of new glycidyl methacrylate copolymers. J Appl Polym Sci 2011. [DOI: 10.1002/app.33420] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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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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Piao MH, Son PS, Chang CH, Choi SH. A glucose biosensor based on deposition of glucose oxidase onto Au nanoparticles poly(maleic anhydride)-grafted multiwalled carbon nanotube electrode. ANALYTICAL SCIENCE AND TECHNOLOGY 2010. [DOI: 10.5806/ast.2010.23.2.165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lahari C, Jasti LS, Fadnavis NW, Sontakke K, Ingavle G, Deokar S, Ponrathnam S. Adsorption induced enzyme denaturation: the role of polymer hydrophobicity in adsorption and denaturation of alpha-chymotrypsin on allyl glycidyl ether (AGE)-ethylene glycol dimethacrylate (EGDM) copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:1096-1106. [PMID: 19994900 DOI: 10.1021/la904114u] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Effects of changes in hydrophobicity of polymeric support on structure and activity of alpha-chymotrypsin (E.C. 3.4.21.1) have been studied with copolymers of allyl glycidyl ether (AGE) and ethylene glycol dimethacrylate (EGDM) with increasing molar ratio of EGDM to AGE (cross-link density 0.05 to 1.5). The enzyme is readily adsorbed from aqueous buffer at room temperature following Langmuir adsorption isotherms in unexpectedly large amounts (25% w/w). Relative hydrophobicity of the copolymers has been assessed by studying adsorption of naphthalene and Fmoc-methionine by the series of copolymers from aqueous solutions. Polymer hydrophobicity appears to increase linearly on increasing cross-link density from 0.05 to 0.25. Further increase in cross-link density causes a decrease in naphthalene binding but has little effect on binding of Fmoc-Met. Binding of alpha-chymotrypsin to these copolymers follow the trend for Fmoc-methionine binding, rather than naphthalene binding, indicating involvement of polar interactions along with hydrophobic interactions during binding of protein to the polymer. The adsorbed enzyme undergoes extensive denaturation (ca. 80%) with loss of both tertiary and secondary structure on contact with the copolymers as revealed by fluorescence, CD and Raman spectra of the adsorbed protein. Comparison of enzyme adsorption behavior with Eupergit C, macroporous Amberlite XAD-2, and XAD-7 suggests that polar interactions of the EGDM ester functional groups with the protein play a significant role in enzyme denaturation.
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Affiliation(s)
- Challa Lahari
- Biotransformations Laboratory, Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500007, India
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Park JH, Bae IA, Choi SH. Preparation of Zr4+affinity column by atom transfer radical polymerization for phosphoprotein isolation. J Appl Polym Sci 2009. [DOI: 10.1002/app.30473] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hahn HW, Rainer M, Ringer T, Huck CW, Bonn GK. Ultrafast Microwave-Assisted In-Tip Digestion of Proteins. J Proteome Res 2009; 8:4225-30. [DOI: 10.1021/pr900188x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hans W. Hahn
- Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University, Innrain 52a, 6020 Innsbruck, Austria
| | - Matthias Rainer
- Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University, Innrain 52a, 6020 Innsbruck, Austria
| | - Thomas Ringer
- Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University, Innrain 52a, 6020 Innsbruck, Austria
| | - Christian W. Huck
- Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University, Innrain 52a, 6020 Innsbruck, Austria
| | - Günther K. Bonn
- Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University, Innrain 52a, 6020 Innsbruck, Austria
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Preparation and characterization of sizable macroporous epoxy resin-based monolithic supports for flow-through systems. J Sep Sci 2009; 32:2608-18. [DOI: 10.1002/jssc.200900242] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Gómez JM, Romero MD, Hodaifa G, de la Parra E. Adsorption of trypsin on commercial silica gel. Eng Life Sci 2009. [DOI: 10.1002/elsc.200900018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Piao MH, Yang DS, Yoon KR, Lee SH, Choi SH. Development of an Electrogenerated Chemiluminescence Biosensor using Carboxylic acid-functionalized MWCNT and Au Nanoparticles. SENSORS 2009; 9:1662-77. [PMID: 22573979 PMCID: PMC3345825 DOI: 10.3390/s90301662] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 03/04/2009] [Accepted: 03/06/2009] [Indexed: 11/20/2022]
Abstract
A COOH-F-MWCNT-Nafion-Ru(bpy)32+-Au-ADH electrogenerated chemiluminescence (ECL) electrode using COOH-functionalized MWCNT (COOH-F-MWCNT) and Au nanoparticles synthesized by the radiation method was fabricated for ethanol sensing. A higher sensing efficiency for ethanol for the ECL biosensor prepared by PAAc-g-MWCNT was measured compared to that of the ECL biosensor prepared by PMAc-g-MWCNT, and purified MWCNT. Experimental parameters affecting ethanol detection were also examined in terms of pH and the content of PAAc-g-MWCNT in Nafion. Little interference of other compounds was observed for the assay of ethanol. Results suggest this ECL biosensor could be applied for ethanol detection in real samples.
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Affiliation(s)
- Ming-Hua Piao
- Department of Chemistry, BK 21 NanoBiosensor Research Team, Hannam University, Daejeon 305-811, Republic of Korea; E-mail: (M. P); (D. Y); (K. Y); (S. L)
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Gai L, Wu D. A Novel Reversible pH-Triggered Release Immobilized Enzyme System. Appl Biochem Biotechnol 2008; 158:747-60. [DOI: 10.1007/s12010-008-8373-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Accepted: 09/15/2008] [Indexed: 11/29/2022]
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Vaidya BK, Ingavle GC, Ponrathnam S, Kulkarni BD, Nene SN. Immobilization of Candida rugosa lipase on poly(allyl glycidyl ether-co-ethylene glycol dimethacrylate) macroporous polymer particles. BIORESOURCE TECHNOLOGY 2008; 99:3623-9. [PMID: 17766105 DOI: 10.1016/j.biortech.2007.07.035] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2007] [Revised: 07/19/2007] [Accepted: 07/20/2007] [Indexed: 05/17/2023]
Abstract
Macroporous polymer particles containing surface epoxy groups were synthesized for immobilization of Candida rugosa lipase (CRL). The effect of incorporation of two different sets of monomers [allyl glycidyl ether (AGE) and glycidyl methacrylate (GMA)] and the effect of crosslinking density on immobilization of lipase were studied. AGE-co-EGDM polymers gave higher binding and expression of lipase than GMA-co-EGDM polymers. Optimization of immobilization parameters was done with respect to immobilization time and enzyme loading. Amongst AGE-co-EGDM polymer series, AGE-150 polymer found to give maximum lipase activity yield and therefore evaluated for temperature, pH and storage stability. Under optimum conditions, AGE-150 polymer gave 78.40% of activity yield. Immobilized lipase on AGE-150 showed a broader pH, higher temperature and excellent storage stability.
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Affiliation(s)
- Bhalchandra K Vaidya
- Chemical Engineering and Process Development Division, National Chemical Laboratory, Pune 411 008, India
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Geiser L, Eeltink S, Svec F, Fréchet JMJ. In-line system containing porous polymer monoliths for protein digestion with immobilized pepsin, peptide preconcentration and nano-liquid chromatography separation coupled to electrospray ionization mass spectroscopy. J Chromatogr A 2008; 1188:88-96. [PMID: 18342870 PMCID: PMC2435401 DOI: 10.1016/j.chroma.2008.02.075] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2007] [Revised: 02/10/2008] [Accepted: 02/15/2008] [Indexed: 10/22/2022]
Abstract
The use of two different monoliths located in capillaries for on-line protein digestion, preconcentration of peptides and their separation has been demonstrated. The first monolith was used as support for covalent immobilization of pepsin. This monolith with well-defined porous properties was prepared by in situ copolymerization of 2-vinyl-4,4-dimethylazlactone and ethylene dimethacrylate. The second, poly(lauryl methacrylate-co-ethylene dimethacrylate) monolith with a different porous structure served for the preconcentration of peptides from the digest and their separation in reversed-phase liquid chromatography mode. The top of the separation capillary was used as a preconcentrator, thus enabling the digestion of very dilute solutions of proteins in the bioreactor and increasing the sensitivity of the mass spectrometric detection of the peptides using a time-of-flight mass spectrometer with electrospray ionization. Myoglobin, albumin, and hemoglobin were digested to demonstrate feasibility of the concept of using the two monoliths in-line. Successive protein injections confirmed both the repeatability of the results and the ability to reuse the bioreactor for at least 20 digestions.
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Affiliation(s)
- Laurent Geiser
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA
| | - Sebastiaan Eeltink
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA
| | - Frantisek Svec
- The Molecular Foundry, E.O. Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8139, USA
| | - Jean M. J. Fréchet
- Department of Chemistry, University of California, Berkeley, CA 94720-1460, USA
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Chen B, Hu J, Miller EM, Xie W, Cai M, Gross RA. Candida antarctica Lipase B Chemically Immobilized on Epoxy-Activated Micro- and Nanobeads: Catalysts for Polyester Synthesis. Biomacromolecules 2008; 9:463-71. [DOI: 10.1021/bm700949x] [Citation(s) in RCA: 169] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bo Chen
- NSF I/UCRC for Biocatalysis and Bioprocessing of Macromolecules, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201, Rohm and Haas Company, P.O. Box 904, Spring House, Pennsylvania 19477
| | - Jun Hu
- NSF I/UCRC for Biocatalysis and Bioprocessing of Macromolecules, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201, Rohm and Haas Company, P.O. Box 904, Spring House, Pennsylvania 19477
| | - Elizabeth M. Miller
- NSF I/UCRC for Biocatalysis and Bioprocessing of Macromolecules, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201, Rohm and Haas Company, P.O. Box 904, Spring House, Pennsylvania 19477
| | - Wenchun Xie
- NSF I/UCRC for Biocatalysis and Bioprocessing of Macromolecules, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201, Rohm and Haas Company, P.O. Box 904, Spring House, Pennsylvania 19477
| | - Minmin Cai
- NSF I/UCRC for Biocatalysis and Bioprocessing of Macromolecules, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201, Rohm and Haas Company, P.O. Box 904, Spring House, Pennsylvania 19477
| | - Richard A. Gross
- NSF I/UCRC for Biocatalysis and Bioprocessing of Macromolecules, Polytechnic University, 6 Metrotech Center, Brooklyn, New York 11201, Rohm and Haas Company, P.O. Box 904, Spring House, Pennsylvania 19477
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Bryjak J, Liesiene J, Kolarz BN. Application and properties of butyl acrylate/pentaerythrite triacrylate copolymers and cellulose-based Granocel as carriers for trypsin immobilization. Colloids Surf B Biointerfaces 2008; 61:66-74. [PMID: 17768035 DOI: 10.1016/j.colsurfb.2007.07.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2006] [Revised: 06/19/2007] [Accepted: 07/16/2007] [Indexed: 11/30/2022]
Abstract
The main point was the search for a proper carrier and the kind of carrier activation for trypsin (EC 3.4.21.4) immobilization. The acrylic and cellulose-based carriers were specially prepared in that they possessed the most often used anchor groups: -OH, -NH(2), DEAE and/or -COOH. The immobilization procedures were selected to apply mainly to protein amine groups and appropriate anchor groups on the carrier. As activity tests low (N-benzoyl-dl-arginine-p-nitroanilide, BAPNA) and high (casein) molecular weight substrates were used. It was found, as a rule, that trypsin bound to -COOH groups with the help of carbodiimide was less active and that the amount of bound protein and measured activity (BAPNA) are considerably higher when protein is immobilized via divinyl sulfone. Both rules were observed irrespective of the nature of the polymer matrix. Both types of carriers were found suitable for trypsin immobilization and they were far better than the corresponding Eupergit C-bound enzyme preparations. Taking into account storage stability and activity for both substrates, the divinylsulfone linkage formed between unmodified Granocel and trypsin was the most effective method for the enzyme immobilization. For this preparation, BAPNA and casein conversion, thermal stability at 60 degrees C and estimated kinetic parameters were compared with those obtained for the native enzyme. It was shown that mass transport limitations could be effectively eliminated by suitable conditions and immobilized trypsin was considerably more stable. The values k(cat)/K(m) indicated that the immobilized enzyme was even better as amidase activity was regarded and its potential for protein hydrolysis was only less than twice.
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Affiliation(s)
- Jolanta Bryjak
- Faculty of Chemistry, Department of Bioorganic Chemistry, Wrocław University of Technology, 50-370 Wrocław, Wybrzeze Wyspiańskiego 27, Poland.
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Vaidya BK, Karale AJ, Suthar HK, Ingavle G, Pathak TS, Ponrathnam S, Nene S. Immobilization of mushroom polyphenol oxidase on poly(allyl glycidyl ether-co-ethylene glycol dimethacrylate) macroporous beaded copolymers. REACT FUNCT POLYM 2007. [DOI: 10.1016/j.reactfunctpolym.2007.05.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hamerska-Dudra A, Bryjak J, Trochimczuk AW. Immobilization of glucoamylase and trypsin on crosslinked thermosensitive carriers. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2007.01.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Pérez JPH, López-Cabarcos E, López-Ruiz B. The application of methacrylate-based polymers to enzyme biosensors. ACTA ACUST UNITED AC 2006; 23:233-45. [PMID: 16880004 DOI: 10.1016/j.bioeng.2006.06.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2005] [Revised: 06/19/2006] [Accepted: 06/19/2006] [Indexed: 10/24/2022]
Abstract
Enzyme electrodes based on methacrylates have received significant attention in the development of biosensors. This article reviews the use and application of methacrylate and its derivatives as an immobilization system for the preparation of enzyme electrodes. Resent examples, extracted from the literature, illustrate the superior performance of such materials in the fabrication of biosensors and bioreactors.
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Affiliation(s)
- J P Hervás Pérez
- Sección Departamental de Química Analítica, Facultad de Farmacia, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain
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Wang R, Zhang Y, Ma G, Su Z. Preparation of uniform poly(glycidyl methacrylate) porous microspheres by membrane emulsification–polymerization technology. J Appl Polym Sci 2006. [DOI: 10.1002/app.25015] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Xi F, Wu J, Jia Z, Lin X. Preparation and characterization of trypsin immobilized on silica gel supported macroporous chitosan bead. Process Biochem 2005. [DOI: 10.1016/j.procbio.2004.12.013] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Eriksson J, Malmsten M, Tiberg F, Callisen TH, Damhus T, Johansen KS. Enzymatic degradation of model cellulose films. J Colloid Interface Sci 2005; 284:99-106. [PMID: 15752790 DOI: 10.1016/j.jcis.2004.10.041] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2003] [Accepted: 10/18/2004] [Indexed: 11/17/2022]
Abstract
Enzymatic degradation of model cellulose films prepared by a spin-coating technique was investigated by ellipsometry. The cellulose films were prior to degradation characterized by ellipsometry, contact angle measurements, ESCA (electron spectroscopy for chemical analysis) and AFM (atomic force microscopy). At enzyme addition to preformed cellulose films an initial adsorption was observed, which was followed by a total interfacial mass decrease due to enzymatic degradation of the cellulose films. The degradation rate was found to be constant during an extended time of hours, whereafter the degradation leveled off. In parallel to the decreased interfacial mass, the cellulose degradation resulted in a thinner and more dilute interfacial film. At long degradation times, however, there was an expansion of the cellulose film. The enzyme concentration affected the degradation rate significantly, with a faster degradation at a higher enzyme concentration. The effects of pH, temperature, ionic strength and stirring rate in the cuvette were also investigated.
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Affiliation(s)
- Jonny Eriksson
- Institute for Surface Chemistry, Box 5607, SE-114 86 Stockholm, Sweden.
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Jang J, Bae J, Ko S. Synthesis and curing of poly(glycidyl methacrylate) nanoparticles. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.20706] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kim JK, Shin DS, Chung WJ, Jang KH, Lee KN, Kim YK, Lee YS. Effects of polymer grafting on a glass surface for protein chip applications. Colloids Surf B Biointerfaces 2004. [DOI: 10.1016/j.colsurfb.2003.08.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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38
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The covalent immobilization of trypsin at the galleries of layered γ-zirconium phosphate. Colloids Surf B Biointerfaces 2003. [DOI: 10.1016/s0927-7765(03)00053-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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39
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Choi SH, Lee KP, Kang HD. Immobilization of lipase on a polymeric microsphere with an epoxy group prepared by radiation-induced polymerization. J Appl Polym Sci 2003. [DOI: 10.1002/app.11737] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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40
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Choi SH, Hwang YM, Lee KP. Separation of proteins on polymeric stationary phases grafted with various amine groups. J Chromatogr A 2003; 987:323-30. [PMID: 12613826 DOI: 10.1016/s0021-9673(02)01840-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Six polymeric stationary phases with various amine groups were prepared by surface grafting of glycidyl methacrylate on silica gel surface and its subsequent amination. The six kinds of amines, namely, triethylamine, diethylamine, ethylenediamine (EDA), hexaethylenediamine (HEDA), diethylenetriamine (DETA) and triethylenetetraamine (TETA) were used in this study. The separation of bovine serum albumin (BSA) and chicken egg albumin (CEA) on the polymeric stationary phase with various amines was investigated. The affinity degree of BSA was higher than CEA for the EDA, HEDA and DETA columns, whereas the affinity degree of CEA was higher than BSA for the TETA column.
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Affiliation(s)
- Seong-Ho Choi
- Department of Chemistry, Graduate School, Kyungpook National University, Daegu 702-701, South Korea
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41
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Çamli S, Şenel Ş, Tuncel A. Nucleotide isolation by boronic acid functionalized hydrophilic supports. Colloids Surf A Physicochem Eng Asp 2002. [DOI: 10.1016/s0927-7757(02)00135-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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