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Separation Technologies for Whey Protein Fractionation. FOOD ENGINEERING REVIEWS 2023. [DOI: 10.1007/s12393-022-09330-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Abstract
Whey is a by-product of cheese, casein, and yogurt manufacture. It contains a mixture of proteins that need to be isolated and purified to fully exploit their nutritional and functional characteristics. Protein-enriched fractions and highly purified proteins derived from whey have led to the production of valuable ingredients for many important food and pharmaceutical applications. This article provides a review on the separation principles behind both the commercial and emerging techniques used for whey protein fractionation, as well as the efficacy and limitations of these techniques in isolating and purifying individual whey proteins. The fractionation of whey proteins has mainly been achieved at commercial scale using membrane filtration, resin-based chromatography, and the integration of multiple technologies (e.g., precipitation, membrane filtration, and chromatography). Electromembrane separation and membrane chromatography are two main emerging techniques that have been developed substantially in recent years. Other new techniques such as aqueous two-phase separation and magnetic fishing are also discussed, but only a limited number of studies have reported their application in whey protein fractionation. This review offers useful insights into research directions and technology screening for academic researchers and dairy processors for the production of whey protein fractions with desired nutritional and functional properties.
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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.
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Designing protein adsorptive materials by simultaneous radiation-induced grafting polymerization: A review. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Urtasun N, Mignon A, Martínez-Alvarez LM, Baieli MF, Hirsch DB, Cascone O, Dubruel P, Wolman FJ. Synthesis and characterization of chitosan mini-spheres with immobilized dye as affinity ligand for the purification of lactoperoxidase and lactoferrin from dairy whey. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fan Y, Jiang J, Song S, Chen X. The selective extraction of iron-binding glycoprotein lactoferrin via a “deferrization-restoring” SPE strategy. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Advanced analytical tools for bovine lactoferrin identification and quantification in raw skim milk to finished lactoferrin powders. Int Dairy J 2019. [DOI: 10.1016/j.idairyj.2019.104546] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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7
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A review of magnetic separation of whey proteins and potential application to whey proteins recovery, isolation and utilization. J FOOD ENG 2019. [DOI: 10.1016/j.jfoodeng.2018.10.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Kaur N, Sharma P, Jaimni S, Kehinde BA, Kaur S. Recent developments in purification techniques and industrial applications for whey valorization: A review. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1573169] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Navpreet Kaur
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Poorva Sharma
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Seema Jaimni
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Bababode Adesegun Kehinde
- Department of Food Technology and Nutrition, School of Agriculture, Lovely Professional University, Phagwara, Punjab, India
| | - Shubhneet Kaur
- Food Science and Technology, National Institute of Food Technology Entrepreneurship and Management, Kundli, Haryana, India
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Hirsch DB, Baieli MF, Urtasun N, Lázaro- Martínez JM, Glisoni RJ, Miranda MV, Cascone O, Wolman FJ. Sulfanilic acid-modified chitosan mini-spheres and their application for lysozyme purification from egg white. Biotechnol Prog 2017; 34:387-396. [DOI: 10.1002/btpr.2588] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 11/10/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Daniela B. Hirsch
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - María F. Baieli
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - Nicolás Urtasun
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - Juan M. Lázaro- Martínez
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Orgánica, Junín 956 (C1113AAD); Buenos Aires Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Junín 956 (C1113AAD); Buenos Aires Argentina
| | - Romina J. Glisoni
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica II. Junín 956, 1113 Buenos Aires; Argentina
| | - María V. Miranda
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - Osvaldo Cascone
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
| | - Federico J. Wolman
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Biotecnología. Junín 956, 1113 Buenos Aires; Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Nanobiotecnología (NANOBIOTEC), Junín 956, 1113 Buenos Aires; Argentina
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Lactoperoxidase purification from whey by using dye affinity chromatography. FOOD AND BIOPRODUCTS PROCESSING 2017. [DOI: 10.1016/j.fbp.2017.02.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lin L, Sun H, Zhang K, Zhong Y, Cheng Q, Bian X, Xin Q, Cheng B, Feng X, Zhang Y. Novel affinity membranes with macrocyclic spacer arms synthesized via click chemistry for lysozyme binding. JOURNAL OF HAZARDOUS MATERIALS 2017; 327:97-107. [PMID: 28043047 DOI: 10.1016/j.jhazmat.2016.12.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 12/22/2016] [Accepted: 12/23/2016] [Indexed: 06/06/2023]
Abstract
Affinity membrane has great potential for applications in bioseparation and purification. Disclosed herein is the design of a novel affinity membrane with macrocyclic spacer arms for lysozyme binding. The clickable azide-cyclodextrin (CD) arms and clickable alkyne ethylene-vinyl alcohol (EVAL) chains are designed and prepared. By the azide-alkyne click reaction, the EVAL-CD-ligands affinity membranes with CD spacer arms in three-dimensional micro channels have been successfully fabricated. The FT-IR, XPS, NMR, SEM and SEM-EDS results give detailed information of structure evolution. The abundant pores in membrane matrix provide efficient working channels, and the introduced CD arms with ligands (affinity sites) provide supramolecular atmosphere. Compared with that of raw EVAL membrane, the adsorption capacity of EVAL-CD-ligands membrane (26.24mg/g) show a triple increase. The study indicates that three effects (inducing effect, arm effect, site effect) from CD arms render the enhanced performance. The click reaction happened in membrane matrix in bulk. The effective lysozyme binding and higher adsorption performance of affinity membranes described herein compared with other reported membranes are markedly related with the proposed strategy involving macrocyclic spacer arms and supramolecular working channels.
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Affiliation(s)
- Ligang Lin
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China.
| | - Hui Sun
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Kaiyu Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Yonghui Zhong
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Qi Cheng
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Xihui Bian
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China
| | - Qingping Xin
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China; Department of Chemical Engineering, University of Waterloo, Waterloo, ONT., N2L 3G1, Canada
| | - Bowen Cheng
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China; Department of Chemical Engineering, University of Waterloo, Waterloo, ONT., N2L 3G1, Canada
| | - Xianshe Feng
- Department of Chemical Engineering, University of Waterloo, Waterloo, ONT., N2L 3G1, Canada
| | - Yuzhong Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China
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Abd El-Salam MH, El-Shibiny S. Separation of Bioactive Whey Proteins and Peptides. INGREDIENTS EXTRACTION BY PHYSICOCHEMICAL METHODS IN FOOD 2017:463-494. [DOI: 10.1016/b978-0-12-811521-3.00012-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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13
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Fan J, Luo J, Song W, Chen X, Wan Y. Directing membrane chromatography to manufacture α1-antitrypsin from human plasma fraction IV. J Chromatogr A 2015; 1423:63-70. [PMID: 26518493 DOI: 10.1016/j.chroma.2015.10.050] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/14/2015] [Accepted: 10/16/2015] [Indexed: 11/28/2022]
Abstract
The surging demand for plasma proteins, mainly driven by the growing market and the development of new therapeutic indications, is promoting manufacturers to improve the throughput of plasma proteins. Due to the inherent convective mass transfer, membrane chromatography has been proved to be an efficient approach for extracting a small amount of target proteins from large-volume feed. In this study, α1-antitrypsin (AAT) was extracted from human plasma fraction IV by a two-step membrane chromatography. An anion-exchange membrane chromatography (AEMC) was used to capture the plasma proteins in bind/elute mode, and the obtained effluent was further polished by a hydrophobic interaction membrane chromatography (HIMC) in flow-through mode. Under optimal conditions, the recovery and purity of AAT achieved 87.0% and 0.58 AAT/protein (g/g) by AEMC, respectively. After the precise polishing by HIMC, the purity of AAT was 1.22 AAT/protein (g/g). The comparison results showed that membrane chromatography outperformed column chromatography in both steps because of its high throughput. This two-step membrane chromatography could obtain an AAT recovery of 83.3% and an activity recovery of 91.4%. The outcome of this work not only offers an alternative process for protein purification from plasma, but also provides guidelines for manufacturing product from a large-volume feed with multi-components by membrane chromatography.
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Affiliation(s)
- Jinxin Fan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianquan Luo
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Weijie Song
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiangrong Chen
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Yinhua Wan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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Teepakorn C, Fiaty K, Charcosset C. Optimization of lactoferrin and bovine serum albumin separation using ion-exchange membrane chromatography. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.07.046] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Studies on recovery of lactoferrin from bovine colostrum whey using mercapto ethyl pyridine and phenyl propyl amine HyperCel™ mixed mode sorbents. BIOTECHNOL BIOPROC E 2015. [DOI: 10.1007/s12257-014-0408-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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16
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Isolation of lactoferrin from whey by dye-affinity chromatography with Yellow HE-4R attached to chitosan mini-spheres. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2014.03.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Du QY, Lin DQ, Zhang QL, Yao SJ. An integrated expanded bed adsorption process for lactoferrin and immunoglobulin G purification from crude sweet whey. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 947-948:201-7. [DOI: 10.1016/j.jchromb.2013.12.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 11/30/2013] [Accepted: 12/19/2013] [Indexed: 11/26/2022]
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18
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Baieli MF, Urtasun N, Miranda MV, Cascone O, Wolman FJ. Bovine lactoferrin purification from whey using Yellow HE-4R as the chromatographic affinity ligand. J Sep Sci 2014; 37:484-7. [DOI: 10.1002/jssc.201301086] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Revised: 11/30/2013] [Accepted: 12/13/2013] [Indexed: 11/07/2022]
Affiliation(s)
- María Fernanda Baieli
- Cátedra de Microbiología Industrial y Biotecnología; Facultad de Farmacia y Bioquímica; Universidad de Buenos Aires; Junín 956 1113 Buenos Aires Argentina
| | - Nicolás Urtasun
- Cátedra de Microbiología Industrial y Biotecnología; Facultad de Farmacia y Bioquímica; Universidad de Buenos Aires; Junín 956 1113 Buenos Aires Argentina
| | - María Victoria Miranda
- Cátedra de Microbiología Industrial y Biotecnología; Facultad de Farmacia y Bioquímica; Universidad de Buenos Aires; Junín 956 1113 Buenos Aires Argentina
| | - Osvaldo Cascone
- Cátedra de Microbiología Industrial y Biotecnología; Facultad de Farmacia y Bioquímica; Universidad de Buenos Aires; Junín 956 1113 Buenos Aires Argentina
| | - Federico Javier Wolman
- Cátedra de Microbiología Industrial y Biotecnología; Facultad de Farmacia y Bioquímica; Universidad de Buenos Aires; Junín 956 1113 Buenos Aires Argentina
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Urtasun N, Baieli MF, Romasanta PN, Fernández MM, Malchiodi EL, Cascone O, Wolman FJ, Miranda MV. Triazinic dye ligand selection by surface plasmon resonance for recombinant lactoferricin purification. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.07.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ferrari A, Friedrich A, Weill F, Wolman F, Leoni J. ANTIBODY LABELING WITH REMAZOL BRILLIANT VIOLET 5R, A VINYLSULPHONIC REACTIVE DYE. J Immunoassay Immunochem 2013; 34:323-32. [DOI: 10.1080/15321819.2012.732170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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21
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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]
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Iwanade A, Umeno D, Saito K, Sugo T. Dependence of protein binding capacity of dimethylamino-γ-butyric-acid (DMGABA)-immobilized porous membrane on composition of solvent used for DMGABA immobilization. Radiat Phys Chem Oxf Engl 1993 2013. [DOI: 10.1016/j.radphyschem.2013.02.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Zitka O, Skalickova S, Krizkova S, Vlkova M, Adam V, Kizek R. Separation of Lactoferrin from Human Saliva Using Monolithic Disc. Chromatographia 2013. [DOI: 10.1007/s10337-013-2459-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Du QY, Lin DQ, Xiong ZS, Yao SJ. One-Step Purification of Lactoferrin from Crude Sweet Whey Using Cation-Exchange Expanded Bed Adsorption. Ind Eng Chem Res 2013. [DOI: 10.1021/ie302606z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qiao-Yan Du
- Key Laboratory of Biomass Chemical
Engineering of Ministry of Education, Department of Chemical
and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Dong-Qiang Lin
- State Key Laboratory of Chemical
Engineering, Zhejiang University, Hangzhou
310027, China
| | - Zhan-Sen Xiong
- Key Laboratory of Biomass Chemical
Engineering of Ministry of Education, Department of Chemical
and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Shan-Jing Yao
- Key Laboratory of Biomass Chemical
Engineering of Ministry of Education, Department of Chemical
and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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Ismael AB, Hafez SMAE, Mahmoud MB, Elaraby AKA, Hassan HM. Development of New Strategy for Non-Antibiotic Therapy: Dromedary Camel Lactoferrin Has a Potent Antimicrobial and Immunomodulator Effects. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/aid.2013.34034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nasef MM, Güven O. Radiation-grafted copolymers for separation and purification purposes: Status, challenges and future directions. Prog Polym Sci 2012. [DOI: 10.1016/j.progpolymsci.2012.07.004] [Citation(s) in RCA: 140] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Purification of lactoferrin using hydroxyapatite. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:976-80. [DOI: 10.1016/j.jchromb.2010.02.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 02/01/2010] [Accepted: 02/07/2010] [Indexed: 11/16/2022]
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28
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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]
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Ventura AM, Lahore HMF, Smolko EE, Grasselli M. High-speed protein purification by adsorptive cation-exchange hollow-fiber cartridges. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2008.05.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bovine colostrum contains immunoglobulin G antibodies against intimin, EspA, and EspB and inhibits hemolytic activity mediated by the type three secretion system of attaching and effacing Escherichia coli. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2008; 15:1208-13. [PMID: 18562563 DOI: 10.1128/cvi.00027-08] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Enterohemorrhagic Escherichia coli (EHEC) is the main cause of hemolytic-uremic syndrome, an endemic disease in Argentina which had an incidence in 2005 of 13.9 cases per 100,000 children younger than 5 years old. Cattle appear to be a major reservoir of EHEC, and a serological response to EHEC antigens has been demonstrated in natural and experimental infections. In the current study, antibodies against proteins implicated in EHEC's ability to form attaching and effacing lesions, some of which are exported to the host cell via a type three secretion system (TTSS), were identified in bovine colostrum by Western blot analysis. Twenty-seven (77.0%) of the 35 samples examined contained immunoglobulin G (IgG) antibodies against the three proteins assayed in this study: EspA, EspB, and the carboxy-terminal 280 amino acids of gamma-intimin, an intimin subtype associated mainly with O157:H7 and O145:H- serotypes. Every colostrum sample was able to inhibit, in a range between 45.9 and 96.7%, the TTSS-mediated hemolytic activity of attaching and effacing E. coli. The inhibitory effect was partially mediated by IgG and lactoferrin. In conclusion, we found that early colostrum from cows contains antibodies, lactoferrin, and other unidentified substances that impair TTSS function in attaching and effacing E. coli strains. Bovine colostrum might act by reducing EHEC colonization in newborn calves and could be used as a prophylactic measure to protect non-breast-fed children against EHEC infection in an area of endemicity.
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