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Diehm J, Ballweg T, Franzreb M. Development of a 3D Printed Micro Simulated Moving Bed Chromatography System. J Chromatogr A 2023; 1695:463928. [PMID: 36966603 DOI: 10.1016/j.chroma.2023.463928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/01/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023]
Abstract
In the 1960s, chromatography processes were revolutionized by the invention of simulated moving bed chromatography. This method not only enhances the separation performance and resin utilization in comparison to batch-chromatography, it has also a much lower buffer consumption. While simulated moving bed chromatography nowadays is applied for a wide range of industrial applications, it was never transferred to the micro-scale (in regards to column and system volume). In our opinion a micro simulated moving bed chromatography system (µSMB) would be a useful tool for many applications, ranging from early process development and long term studies to downstream processing of speciality products. We implemented such a µSMB with a 3D printed central rotary valve and a microfluidic flow controller as flow source. We tested the system with a four zone open loop setup for the separation of bovine serum albumin and ammonium sulfate with size exclusion chromatography. We used four process points and could achieve desalting levels of BSA ranging from 94% to 99%, with yields ranging form 65% to 88%. Thus, we were able to achieve comparable results to common lab scale processes. With a total dead volume of 358 µL, including all sensors, connections and the valve, this is, to the best of our knowledge, the smallest SMB system that was ever built and we were able to perform experiments with feed flow rates reaching as low as 15 µL/min.
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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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Li W, Liu B, Lin Y, Xue P, Lu Y, Song S, Li Y, Szeto IMY, Ren F, Guo H. The application of lactoferrin in infant formula: The past, present and future. Crit Rev Food Sci Nutr 2022:1-20. [PMID: 36533432 DOI: 10.1080/10408398.2022.2157792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Human milk is universally regarded as the gold standard to fulfill nutrition needs of infants. Lactoferrin (LF) is a major multiple bioactive glycoprotein in human milk but little is presented in infant formula. LF can resist digestion in the infant gastrointestinal tract and is absorbed into the bloodstream in an intact form to perform physiological functions. Evidence suggest that LF prevents pathogen infection, promotes immune system development, intestinal development, brain development and bone health, as well as ameliorates iron deficiency anemia. However, more clinical studies of LF need to be further elucidated to determine an appropriate dosage for application in infant formula. LF is sensitive to denaturation induced by processing of infant formula such as heat treatments and spay drying. Thus, further studies should be focus on maximizing the retention of LF activity in the infant formula process. This review summarizes the structural features of LF. Then the digestion, absorption and metabolism of LF in infants are discussed, followed by the function of LF for infants. Further, we summarize LF in infant formula and effects of processing of infant formula on bioactivities of LF, as well as future perspectives of LF research.
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Affiliation(s)
- Wusun Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
| | - Biao Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
- Inner Mongolia Yili Industrial Group Co., Ltd, Hohhot, PR China
| | - Yingying Lin
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
- Key Laboratory of Functional Dairy, Department of Nutrition and Health, China Agricultural University, Beijing, PR China
| | - Peng Xue
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
| | - Yao Lu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
| | - Sijia Song
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
| | - Yixuan Li
- Key Laboratory of Functional Dairy, Department of Nutrition and Health, China Agricultural University, Beijing, PR China
| | - Ignatius Man-Yau Szeto
- Inner Mongolia Yili Industrial Group Co., Ltd, Hohhot, PR China
- National Center of Technology Innovation for Dairy, Hohhot, PR China
| | - Fazheng Ren
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
- Key Laboratory of Functional Dairy, Department of Nutrition and Health, China Agricultural University, Beijing, PR China
| | - Huiyuan Guo
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, PR China
- Key Laboratory of Functional Dairy, Department of Nutrition and Health, China Agricultural University, Beijing, PR China
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Radosavljević J, Stanić-Vučinić D, Stojadinović M, Radomirović M, Simović A, Radibratović M, Veličković TĆ. Application of Ion Exchange and Adsorption Techniques for Separation of
Whey Proteins from Bovine Milk. CURR ANAL CHEM 2022. [DOI: 10.2174/1573411017666210108092338] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The world production of whey was estimated to be more than 200 million tons per year.
Although whey is an important source of proteins with high nutritional value and biotechnological importance, it is still
considered as a by-product of the dairy industry with low economic value due to low industrial exploitation. There are
several challenges in the separation of whey proteins: low concentration, the complexity of the material and similar
properties (pI, molecular mass) of some proteins.
Methods:
A narrative review of all the relevant papers on the present methodologies based on ion-exchange and
adsorption principles for isolation of whey proteins, known to the authors, was conducted.
Results:
Traditional ion-exchange techniques are widely used for the separation and purification of the bovine whey
proteins. These methodologies, based on the anion or cation chromatographic procedures, as well as combination of
aforementioned techniques are still preferential methods for the isolation of the whey proteins on the laboratory scale.
However, more recent research on ion exchange membranes for this purpose has been introduced, with promising
potential to be applied on the pilot industrial scale. Newly developed methodologies based either on the ion-exchange
separation (for example: simulated moving bed chromatography, expanded bed adsorption, magnetic ion exchangers, etc.)
or adsorption (for example: adsorption on hydroxyapatite or activated carbon, or molecular imprinting) are promising
approaches for scaling up of the whey proteins’ purification processes.
Conclusion:
Many procedures based on ion exchange are successfully implemented for separation and purification of
whey proteins, providing protein preparations of moderate-to-high yield and satisfactory purity. However, the authors
anticipate further development of adsorption-based methodologies for separation of whey proteins by targeting the
differences in proteins’ structures rather than targeting the differences in molecular masses and pI. The complex
composite multilayered matrices, including also inorganic components, are promising materials for simultaneous
exploiting of the differences in the masses, pI and structures of whey proteins for the separation.
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Affiliation(s)
- Jelena Radosavljević
- Department of Biochemistry & Centre of Excellence for Molecular Food Sciences, Faculty of Chemistry, University of Belgrade, Studentski trg 12‑16, 11000 Belgrade,Serbia
| | - Dragana Stanić-Vučinić
- Department of Biochemistry & Centre of Excellence for Molecular Food Sciences, Faculty of Chemistry, University of Belgrade, Studentski trg 12‑16, 11000 Belgrade,Serbia
| | - Marija Stojadinović
- Department of Biochemistry & Centre of Excellence for Molecular Food Sciences, Faculty of Chemistry, University of Belgrade, Studentski trg 12‑16, 11000 Belgrade,Serbia
| | - Mirjana Radomirović
- Department of Biochemistry & Centre of Excellence for Molecular Food Sciences, Faculty of Chemistry, University of Belgrade, Studentski trg 12‑16, 11000 Belgrade,Serbia
| | - Ana Simović
- Department of Biochemistry & Centre of Excellence for Molecular Food Sciences, Faculty of Chemistry, University of Belgrade, Studentski trg 12‑16, 11000 Belgrade,Serbia
| | - Milica Radibratović
- Center for Chemistry, University of Belgrade - Institute of Chemistry, Technology and Metallurgy, Njegoševa 12, 11000 Belgrade,Serbia
| | - Tanja Ćirković Veličković
- Department of Biochemistry & Centre of Excellence for Molecular Food Sciences, Faculty of Chemistry, University of Belgrade, Studentski trg 12‑16, 11000 Belgrade,Serbia
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5
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Current practices with commercial scale bovine lactoferrin production and alternative approaches. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2021.105263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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6
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Paladii IV, Vrabie EG, Sprinchan KG, Bologa MK. Whey: Review. Part 2. Treatment Processes and Methods. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2021. [DOI: 10.3103/s1068375521060119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Karanth S, Iyyaswami R. Mixed Surfactant‐Based Reverse Micellar Extraction Studies of Bovine Lactoperoxidase. J SURFACTANTS DETERG 2021. [DOI: 10.1002/jsde.12489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shwetha Karanth
- Department of Chemical Engineering National Institute of Technology Karnataka Surathkal Mangalore 575025 India
| | - Regupathi Iyyaswami
- Department of Chemical Engineering National Institute of Technology Karnataka Surathkal Mangalore 575025 India
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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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9
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Characterisation of Lactoferrin Isolated from Acid Whey Using Pilot-Scale Monolithic Ion-Exchange Chromatography. Processes (Basel) 2020. [DOI: 10.3390/pr8070804] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The aim of this study was to characterize the properties of lactoferrin (LF) obtained in a process developed for its isolation from acid whey derived from the production of fresh curd cheese, using a unique technology of ion-exchange chromatography on CIM® monolithic columns. The freeze-dried lactoferrin samples produced on the pilot plant (capacity 1 m3) were examined for the purity, iron-binding capacity, antibacterial activity, and pH- and temperature-stability. Apo-LF inhibited several tested strains (enterobacteria, Staphylococcus, Streptococcus salivarius) except clostridia, lactic acid bacteria, and bifidobacteria. Sample of LF intentionally saturated with Fe3+ lost its antibacterial activity, indicating the involvement of mechanisms based on depriving bacteria of an iron source. All samples, regardless of the iron-saturation level, exhibited stability in pH range 4.0 to 11.0. LF with higher iron content (A-value = 41.9%) showed better thermal stability. Heat treatment up to 72 °C/3 s did not reduce antimicrobial activity against E. coli O157: H7 tox-. Higher purity (above 91%), higher iron-binding capacity and higher inhibitory activity against E. coli O157: H7 tox- compared to some similar products from the market was observed. These results demonstrate a high potential of monolithic ion-exchange chromatography for industrial processing of acid whey as a source of LF that can be used in new products with high-added value. The upscaling of the process is ongoing on a demonstration plant (10–30 m3/day capacity).
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Chen M, Wu H, Zhang W, Mu W. Microbial and enzymatic strategies for the production of L-ribose. Appl Microbiol Biotechnol 2020; 104:3321-3329. [PMID: 32088757 DOI: 10.1007/s00253-020-10471-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/09/2020] [Accepted: 02/13/2020] [Indexed: 10/24/2022]
Abstract
L-Ribose is a non-naturally occurring pentose that recently has become known for its potential application in the pharmaceutical industry, as it is an ideal starting material for use in synthesizing L-nucleosides analogues, an important class of antiviral drugs. In the past few decades, the synthesis of L-ribose has been mainly undertaken through the chemical route. However, chemical synthesis of L-ribose is difficult to achieve on an industrial scale. Therefore, the biotechnological production of L-ribose has gained considerable attention, as it exhibits many merits over the chemical approaches. The present review focuses on various biotechnological strategies for the production of L-ribose through microbial biotransformation and enzymatic catalysis, and in particular on an analysis and comparison of the synthetic methods and different enzymes. The physiological functions and applications of L-ribose are also elucidated. In addition, different sugar isomerases involved in the production of L-ribose from a number of sources are discussed in detail with regard to their biochemical properties. Furthermore, analysis of the separation issues of L-ribose from the reaction solution and different purification methods is presented.Key points • l -Arabinose, l -ribulose and ribitol can be used to produce l -ribose by enzymes. • Five enzymes are systematically introduced for production of l -ribose. • Microbial transformation and enzymatic methods are promising for yielding l -ribose.
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Affiliation(s)
- Ming Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Hao Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, Jiangsu, China
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11
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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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12
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Patil R, Walther J. Continuous Manufacturing of Recombinant Therapeutic Proteins: Upstream and Downstream Technologies. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2019; 165:277-322. [PMID: 28265699 DOI: 10.1007/10_2016_58] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Continuous biomanufacturing of recombinant therapeutic proteins offers several potential advantages over conventional batch processing, including reduced cost of goods, more flexible and responsive manufacturing facilities, and improved and consistent product quality. Although continuous approaches to various upstream and downstream unit operations have been considered and studied for decades, in recent years interest and application have accelerated. Researchers have achieved increasingly higher levels of process intensification, and have also begun to integrate different continuous unit operations into larger, holistically continuous processes. This review first discusses approaches for continuous cell culture, with a focus on perfusion-enabling cell separation technologies including gravitational, centrifugal, and acoustic settling, as well as filtration-based techniques. We follow with a review of various continuous downstream unit operations, covering categories such as clarification, chromatography, formulation, and viral inactivation and filtration. The review ends by summarizing case studies of integrated and continuous processing as reported in the literature.
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Affiliation(s)
- Rohan Patil
- Bioprocess Development, Sanofi, Framingham, MA, 01701, USA
| | - Jason Walther
- Bioprocess Development, Sanofi, Framingham, MA, 01701, USA.
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Magacz M, Kędziora K, Sapa J, Krzyściak W. The Significance of Lactoperoxidase System in Oral Health: Application and Efficacy in Oral Hygiene Products. Int J Mol Sci 2019; 20:ijms20061443. [PMID: 30901933 PMCID: PMC6472183 DOI: 10.3390/ijms20061443] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/13/2019] [Accepted: 03/18/2019] [Indexed: 12/13/2022] Open
Abstract
Lactoperoxidase (LPO) present in saliva are an important element of the nonspecific immune response involved in maintaining oral health. The main role of this enzyme is to oxidize salivary thiocyanate ions (SCN-) in the presence of hydrogen peroxide (H₂O₂) to products that exhibit antimicrobial activity. LPO derived from bovine milk has found an application in food, cosmetics, and medical industries due to its structural and functional similarity to the human enzyme. Oral hygiene products enriched with the LPO system constitute an alternative to the classic fluoride caries prophylaxis. This review describes the physiological role of human salivary lactoperoxidase and compares the results of clinical trials and in vitro studies of LPO alone and complex dentifrices enriched with bovine LPO. The role of reactivators and inhibitors of LPO is discussed together with the possibility of using nanoparticles to increase the stabilization and activity of this enzyme.
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Affiliation(s)
- Marcin Magacz
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Karolina Kędziora
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Jacek Sapa
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Wirginia Krzyściak
- Department of Medical Diagnostics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
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14
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Shariat SZAS, Borzouee F, Mofid MR, Varshosaz J. Immobilization of lactoperoxidase on graphene oxide nanosheets with improved activity and stability. Biotechnol Lett 2018; 40:1343-1353. [PMID: 29915900 DOI: 10.1007/s10529-018-2583-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 05/28/2018] [Indexed: 12/28/2022]
Abstract
OBJECTIVES The purpose of this study was to develop a facile and efficient method to enhance the stability and activity of lactoperoxidase (LPO) by using its immobilization on graphene oxide nanosheets (GO-NS). METHODS Following the LPO purification from bovine whey, it was immobilized onto functionalized GO-NS using glutaraldehyde as cross-linker. Kinetic properties and stability of free and immobilized LPO were investigated. RESULTS LPO was purified 59.13 fold with a specific activity of 5.78 U/mg protein. The successful immobilization of LPO on functionalized GO-NS was confirmed by using dynamic light scattering (DLS) and Fourier transform infrared spectroscopy (FT-IR). The overall results showed that the stability of the immobilized LPO was considerably improved compared to free LPO. Apparent Km and Vmax of LPO also indicated that the immobilized enzyme had greater affinity to the substrate than the native enzyme. CONCLUSIONS Graphene oxide nanosheets are effective means for immobilization of LPO.
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Affiliation(s)
- Seyed Ziyae Aldin Samsam Shariat
- Department of Clinical Biochemistry, Bioinformatics Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Esfahān, Iran
| | - Fatemeh Borzouee
- Department of Clinical Biochemistry, Bioinformatics Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Esfahān, Iran
| | - Mohammad Reza Mofid
- Department of Clinical Biochemistry, Bioinformatics Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Esfahān, Iran
| | - Jaleh Varshosaz
- Department of Pharmaceutics, School of Pharmacy and Novel Drug Delivery Systems Research Centre, Isfahan University of Medical Sciences, Esfahān, Iran.
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15
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Abdulrahman A, Ghanem A. Recent advances in chromatographic purification of plasmid DNA for gene therapy and DNA vaccines: A review. Anal Chim Acta 2018; 1025:41-57. [PMID: 29801607 DOI: 10.1016/j.aca.2018.04.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 12/16/2022]
Abstract
The wide spread of infectious diseases have provoked the scientists to develop new types of vaccines. Among the different types of vaccines, the recently discovered plasmid DNA vaccines, have gained tremendous attentions in the last few decades as a modern approach of vaccination. The scientific interest in plasmid DNA vaccines is attributed to their prominent efficacy as they trigger not only the cellular immune response but also the humoral immune responses. Moreover, pDNA vaccines are easily to be stored, shipped and produced. However, the purification of the pDNA vaccines is a crucial step in their production and administration, which is usually conducted by different chromatographic techniques. This review summarizes the most recent chromatographic purification methods provided in the literature during the last five years following our last review in 2013, including affinity chromatography, hydrophobic interaction chromatography, ion exchange chromatography, multimodal chromatography, sample displacement chromatography and miscellaneous chromatographic methods.
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Affiliation(s)
- Ahmed Abdulrahman
- Chirality Program, Faculty of Science and Technology, University of Canberra, Australian Capital Territory (ACT), 2617, Australia
| | - Ashraf Ghanem
- Chirality Program, Faculty of Science and Technology, University of Canberra, Australian Capital Territory (ACT), 2617, Australia. http://www.chiralitygroup.com
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Reverse micellar extraction of lactoferrin from its synthetic solution using CTAB/ n-heptanol system. Journal of Food Science and Technology 2017; 54:3630-3639. [PMID: 29051658 DOI: 10.1007/s13197-017-2824-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/03/2017] [Accepted: 08/16/2017] [Indexed: 12/31/2022]
Abstract
The partitioning of Lactoferrin (LF) into the reverse micellar phase formed by a cationic surfactant, cetyltrimethylammonium bromide (CTAB) in n-heptanol from the synthetic solution of LF was studied. The solubilization behaviour of LF into the reverse micellar phase and back extraction using a fresh stripping phase were improved by studying the effect of processing parameters, including surfactant concentration, solution pH, electrolyte salt concentration and addition of alcohol as co-solvent. Forward extraction of 100% was achieved at CTAB concentration of 50 mM in n-heptanol solvent, pH of 10 and 1 M NaCl. The electrostatic force and hydrophobic interaction have major influence on LF extraction during forward and back extraction respectively. The size of the reverse micelles and their corresponding water content were measured at different operating conditions to assess their role on the LF extraction. The present reverse micellar system has potential to solubilise almost all the LF into the reverse micelles during forward extraction and could able to allow back extraction from the reverse micellar phase with addition of small amount of co-solvent.
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17
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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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18
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Optimization of Lactoperoxidase and Lactoferrin Separation on an Ion-Exchange Chromatography Step. SEPARATIONS 2017. [DOI: 10.3390/separations4020010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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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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Baur D, Angarita M, Müller-Späth T, Steinebach F, Morbidelli M. Comparison of batch and continuous multi-column protein A capture processes by optimal design. Biotechnol J 2016; 11:920-31. [PMID: 26992151 DOI: 10.1002/biot.201500481] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 12/23/2015] [Accepted: 03/09/2016] [Indexed: 11/06/2022]
Abstract
Multi-column capture processes show several advantages compared to batch capture. It is however not evident how many columns one should use exactly. To investigate this issue, twin-column CaptureSMB, 3- and 4-column periodic counter-current chromatography (PCC) and single column batch capture are numerically optimized and compared in terms of process performance for capturing a monoclonal antibody using protein A chromatography. Optimization is carried out with respect to productivity and capacity utilization (amount of product loaded per cycle compared to the maximum amount possible), while keeping yield and purity constant. For a wide range of process parameters, all three multi-column processes show similar maximum capacity utilization and performed significantly better than batch. When maximizing productivity, the CaptureSMB process shows optimal performance, except at high feed titers, where batch chromatography can reach higher productivity values than the multi-column processes due to the complete decoupling of the loading and elution steps, albeit at a large cost in terms of capacity utilization. In terms of trade-off, i.e. how much the capacity utilization decreases with increasing productivity, CaptureSMB is optimal for low and high feed titers, whereas the 3-column process is optimal in an intermediate region. Using these findings, the most suitable process can be chosen for different production scenarios.
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Affiliation(s)
- Daniel Baur
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Monica Angarita
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Thomas Müller-Späth
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.,ChromaCon AG, Zurich, Switzerland
| | - Fabian Steinebach
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Massimo Morbidelli
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland.
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Martínez Cristancho CA, Seidel-Morgenstern A. Purification of single-chain antibody fragments exploiting pH-gradients in simulated moving bed chromatography. J Chromatogr A 2016; 1434:29-38. [PMID: 26810806 DOI: 10.1016/j.chroma.2016.01.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 12/15/2015] [Accepted: 01/04/2016] [Indexed: 01/15/2023]
Abstract
This paper deals with the theoretical design and experimental validation of an affinity-based continuous multi-column chromatography process for the purification of single-chain Fragment variable (scFv) antibodies. An open-loop 3-zone pH-gradient simulated moving bed (SMB) process was investigated exploiting the highly specific affinity of metal ions toward histidine-tagged recombinant proteins. The separation problem was simplified by considering the cell culture supernatant as a pseudo-binary mixture. The influence of mobile phase pH on the adsorption isotherm parameters was estimated by the inverse method using recorded pH-gradient batch elution profiles. Suitable operating parameters for the SMB process were identified using an equilibrium stage model and subsequently validated in a lab-scale SMB unit. Finally, the performance of the pH-gradient SMB process was compared against a non-optimized batch process. Biologically active single-chain Fragment variable antibody formats were purified continuously with 9% more recovery, 11 times more productivity (576 mg of purified scFv per day and liter stationary phase in SMB) and enriched by a factor of 2.5 compared to those obtained in the non-optimized batch process.
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Affiliation(s)
- Carlos Andrés Martínez Cristancho
- Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstr. 1, 39106 Magdeburg, Germany; Evonik Technology & Infrastructure GmbH, Rodenbacher Chaussee 4, 63457 Hanau, Germany
| | - Andreas Seidel-Morgenstern
- Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstr. 1, 39106 Magdeburg, Germany; Institute of Process Engineering, Otto-von-Guericke University, P.O. Box 4120, 39106 Magdeburg, Germany.
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Cao P, Müller TK, Ketterer B, Ewert S, Theodosiou E, Thomas OR, Franzreb M. Integrated system for temperature-controlled fast protein liquid chromatography. II. Optimized adsorbents and ‘single column continuous operation’. J Chromatogr A 2015; 1403:118-31. [DOI: 10.1016/j.chroma.2015.05.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 05/13/2015] [Accepted: 05/15/2015] [Indexed: 10/23/2022]
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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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24
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Chai DS, Sun Y, Wang XN, Shi QH. Improved purification of immunoglobulin G from plasma by mixed-mode chromatography. J Sep Sci 2014; 37:3461-72. [DOI: 10.1002/jssc.201400554] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 09/03/2014] [Accepted: 09/08/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Dong-Sheng Chai
- Department of Biochemical Engineering; Key Laboratory of Systems Bioengineering; School of Chemical Engineering and Technology; Tianjin University; Tianjin China
| | - Yan Sun
- Department of Biochemical Engineering; Key Laboratory of Systems Bioengineering; School of Chemical Engineering and Technology; Tianjin University; Tianjin China
- Collaborative Innovation Centre of Chemical Science and Engineering; Tianjin China
| | - Xiao-Ning Wang
- Vaccines Research Department 3; Beijing Tiantan Biological Products Co. Ltd; Beijing China
| | - Qing-Hong Shi
- Department of Biochemical Engineering; Key Laboratory of Systems Bioengineering; School of Chemical Engineering and Technology; Tianjin University; Tianjin China
- Collaborative Innovation Centre of Chemical Science and Engineering; Tianjin China
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25
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Xenopoulos A, Pattnaik P. Production and purification of plasmid DNA vaccines: is there scope for further innovation? Expert Rev Vaccines 2014; 13:1537-51. [DOI: 10.1586/14760584.2014.968556] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Simulated moving bed purification of flaxseed oil orbitides: Unprecedented separation of cyclolinopeptides C and E. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 965:231-7. [DOI: 10.1016/j.jchromb.2014.06.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 06/23/2014] [Accepted: 06/30/2014] [Indexed: 11/19/2022]
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Ng CK, Rousset F, Valery E, Bracewell DG, Sorensen E. Design of high productivity sequential multi-column chromatography for antibody capture. FOOD AND BIOPRODUCTS PROCESSING 2014. [DOI: 10.1016/j.fbp.2013.10.003] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Wellhoefer M, Sprinzl W, Hahn R, Jungbauer A. Continuous processing of recombinant proteins: Integration of refolding and purification using simulated moving bed size-exclusion chromatography with buffer recycling. J Chromatogr A 2014; 1337:48-56. [DOI: 10.1016/j.chroma.2014.02.016] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 01/31/2014] [Accepted: 02/05/2014] [Indexed: 01/23/2023]
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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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Emerging technologies for the integration and intensification of downstream bioprocesses. ACTA ACUST UNITED AC 2013. [DOI: 10.4155/pbp.13.55] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Kröber T, Wolff M, Hundt B, Seidel-Morgenstern A, Reichl U. Continuous purification of influenza virus using simulated moving bed chromatography. J Chromatogr A 2013; 1307:99-110. [DOI: 10.1016/j.chroma.2013.07.081] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Revised: 07/18/2013] [Accepted: 07/22/2013] [Indexed: 11/16/2022]
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Wu X, Arellano-Garcia H, Hong W, Wozny G. Improving the Operating Conditions of Gradient Ion-Exchange Simulated Moving Bed for Protein Separation. Ind Eng Chem Res 2013. [DOI: 10.1021/ie302885f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaodan Wu
- Technische Universität Berlin,
Strasse des 17. Juni 135, 10623 Berlin, Germany
| | - Harvey Arellano-Garcia
- School of Engineering, Design and Technology, University of Bradford, West Yorkshire BD7 1DP, United
Kingdom
| | - Weirong Hong
- Zhejiang University, 38 Zheda Street, 310027 Hangzhou, China
| | - Günter Wozny
- Technische Universität Berlin,
Strasse des 17. Juni 135, 10623 Berlin, Germany
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Saufi SM, Fee CJ. Simultaneous anion and cation exchange chromatography of whey proteins using a customizable mixed matrix membrane. J Chromatogr A 2011; 1218:9003-9. [DOI: 10.1016/j.chroma.2011.09.045] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 09/14/2011] [Accepted: 09/15/2011] [Indexed: 10/17/2022]
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Song SM, Kim IH. Simulation of IgY(Immunoglobulin Yolk) Purification by SMB(Simulated Moving Bed). KOREAN CHEMICAL ENGINEERING RESEARCH 2011. [DOI: 10.9713/kcer.2011.49.6.798] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Recombinant protein purification using gradient-assisted simulated moving bed hydrophobic interaction chromatography. Part I: selection of chromatographic system and estimation of adsorption isotherms. J Chromatogr A 2011; 1218:6396-401. [PMID: 21816402 DOI: 10.1016/j.chroma.2011.06.111] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Revised: 05/29/2011] [Accepted: 06/29/2011] [Indexed: 11/22/2022]
Abstract
The design of gradient simulated moving bed (SMB) chromatographic processes requires an appropriate selection of the chromatographic system followed by the determination of adsorption isotherm parameters in the relevant range of mobile phase conditions. The determination of these parameters can be quite difficult for recombinant target proteins present in complex protein mixtures. The first part of this work includes the estimation of adsorption isotherm parameters for streptokinase and a lumped impurity fraction present in an Escherichia coli cell lysate for a hydrophobic interaction chromatography (HIC) matrix. Perturbation experiments were carried out using a Butyl Sepharose matrix with purified recombinant protein on buffer equilibrated columns as well as with crude cell lysate saturated columns. The Henry constants estimated for streptokinase were found to exhibit in a wide range a linear dependence on the salt concentration in the mobile phase. These parameters were applied in subsequent investigations to design a simulated moving bed (SMB) process capable to purify in a continuous manner recombinant streptokinase from the E. coli cell lysate.
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Trends in whey protein fractionation. Biotechnol Lett 2011; 33:1501-11. [DOI: 10.1007/s10529-011-0594-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2011] [Accepted: 03/08/2011] [Indexed: 10/18/2022]
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Separation Strategies for Processing of Dilute Liquid Streams. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING 2011. [DOI: 10.1155/2011/659012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Processing of dilute liquid streams in the industries like food, agro-, biotechnology, pharmaceuticals, environment, and so forth needs special strategy for the separation and purification of the desired product and for environment friendly disposal of the waste stream. The separation strategy adopted to achieve the goal is extremely important from economic as well as from environmental point of view. In the present paper we have reviewed the various aspects of some selected universal separation strategies such as adsorption, membrane separation, electrophoresis, chromatographic separation, and electroosmosis that are exercised for processing of dilute liquid streams.
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Nandini KE, Rastogi NK. Integrated Downstream Processing of Lactoperoxidase from Milk Whey Involving Aqueous Two-Phase Extraction and Ultrasound-Assisted Ultrafiltration. Appl Biochem Biotechnol 2010; 163:173-85. [DOI: 10.1007/s12010-010-9026-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2010] [Revised: 06/15/2010] [Accepted: 06/25/2010] [Indexed: 11/24/2022]
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40
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l-Ribose from l-arabinose by epimerization and its purification by 3-zone simulated moving bed chromatography. Bioprocess Biosyst Eng 2009; 33:87-95. [DOI: 10.1007/s00449-009-0375-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Accepted: 08/11/2009] [Indexed: 10/20/2022]
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Billakanti JM, Fee CJ. Characterization of cryogel monoliths for extraction of minor proteins from milk by cation exchange. Biotechnol Bioeng 2009; 103:1155-63. [DOI: 10.1002/bit.22344] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Rodrigues L, Teixeira J, Schmitt F, Paulsson M, Månsson HL. Lactoferrin and cancer disease prevention. Crit Rev Food Sci Nutr 2009; 49:203-17. [PMID: 19093266 DOI: 10.1080/10408390701856157] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Lactoferrin (LF) is an iron-binding glycoprotein that is composed of the transferrin family and is predominantly found in the products of the exocrine glands located in the gateways of the digestive, respiratory, and reproductive systems, suggesting a role in the non-specific defence against invading pathogens. Additionally, several physiological roles have been attributed to LF, namely regulation of iron homeostasis, host defence against infection and inflammation, regulation of cellular growth, and differentiation and protection against cancer development and metastasis. These findings have suggested LF's great potential therapeutic use in cancer disease prevention and/or treatment, namely as a chemopreventive agent. This review looks at the recent advances in understanding the mechanisms underlying the multifunctional roles of LF and future perspectives on its potential therapeutic applications.
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Affiliation(s)
- Lígia Rodrigues
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Campus de Gualtar, 4710-057 Braga, Portugal.
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Román A, Wang J, Csanádi J, Hodúr C, Vatai G. Experimental Investigation of the Sweet Whey Concentration by Nanofiltration. FOOD BIOPROCESS TECH 2009. [DOI: 10.1007/s11947-009-0192-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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44
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Andersson J, Sahoo D, Mattiasson B. Isolation of potato proteins using simulated moving bed technology. Biotechnol Bioeng 2008; 101:1256-63. [DOI: 10.1002/bit.22012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Adam V, Zitka O, Dolezal P, Zeman L, Horna A, Hubalek J, Sileny J, Krizkova S, Trnkova L, Kizek R. Lactoferrin Isolation Using Monolithic Column Coupled with Spectrometric or Micro-Amperometric Detector. SENSORS 2008; 8:464-487. [PMID: 27879717 PMCID: PMC3681142 DOI: 10.3390/s8010464] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2007] [Accepted: 01/15/2008] [Indexed: 01/14/2023]
Abstract
Lactoferrin is a multifunctional protein with antimicrobial activity and others tohealth beneficial properties. The main aim of this work was to propose easy to usetechnique for lactoferrin isolation from cow colostrum samples. Primarily we utilizedsodium dodecyl sulphate - polyacrylamide gel electrophoresis for isolation of lactoferrinfrom the real samples. Moreover we tested automated microfluidic Experionelectrophoresis system to isolate lactoferrin from the collostrum sample. The welldeveloped signal of lactoferrin was determined with detection limit (3 S/N) of 20 ng/ml. Inspite of the fact that Experion is faster than SDS-PAGE both separation techniques cannotbe used in routine analysis. Therefore we have tested third separation technique, ionexchange chromatography, using monolithic column coupled with UV-VIS detector (LCUV-VIS). We optimized wave length (280 nm), ionic strength of the elution solution (1.5M NaCl) and flow rate of the retention and elution solutions (0.25 ml/min and 0.75 ml/min.respectively). Under the optimal conditions the detection limit was estimated as 0.1 μg/mlof lactoferrin measured. Using LC-UV-VIS we determined that lactoferrin concentrationvaried from 0.5 g/l to 1.1 g/l in cow colostrums collected in the certain time interval up to 72 hours after birth. Further we focused on miniaturization of detection device. We testedamperometric detection at carbon electrode. The results encouraged us to attempt tominiaturise whole detection system and to test it on analysis of real samples of humanfaeces, because lactoferrin level in faeces is closely associated with the inflammations ofintestine mucous membrane. For the purpose of miniaturization we employed thetechnology of printed electrodes. The detection limit of lactoferrin was estimated as 10μg/ml measured by the screen-printed electrodes fabricated by us. The fabricatedelectrodes were compared with commercially available ones. It follows from the obtainedresults that the responses measured by commercial electrodes are app. ten times highercompared with those measured by the electrodes fabricated by us. This phenomenonrelates with smaller working electrode surface area of the electrodes fabricated by us(about 50 %) compared to the commercial ones. The screen-printed electrodes fabricatedby us were utilized for determination of lactoferrin faeces. Regarding to fact that sample offaeces was obtained from young and healthy man the amount of lactoferrin in sample wasunder the limit of detection of this method.
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Affiliation(s)
- Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno, Czech Republic
| | - Ondrej Zitka
- Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno, Czech Republic
| | - Petr Dolezal
- Department of Animal Nutrition and Forage Production Faculty of Agronomy, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno, Czech Republic
| | - Ladislav Zeman
- Department of Animal Nutrition and Forage Production Faculty of Agronomy, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno, Czech Republic
| | - Ales Horna
- Department of Food Engineering, Faculty of Technology, Tomas Bata University, T.G. Masaryka 275, CZ-762 72 Zlin, Czech Republic
| | - Jaromir Hubalek
- Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Udolni 53, CZ-602 00 Brno, Czech Republic
| | - Jan Sileny
- Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Udolni 53, CZ-602 00 Brno, Czech Republic
| | - Sona Krizkova
- Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno, Czech Republic
| | - Libuse Trnkova
- Department Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-611 37 Brno, Czech Republic
| | - Rene Kizek
- Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Zemedelska 1, CZ-613 00 Brno, Czech Republic.
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Li P, Yu J, Xiu G, Rodrigues AE. Separation Region and Strategies for Proteins Separation by Salt Gradient Ion‐Exchange SMB. SEP SCI TECHNOL 2008. [DOI: 10.1080/01496390701747895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hur JS, Wankat PC, Kim J, Kim JK, Koo Y. Purification ofL‐Phenylalanine from a Ternary Amino Acid Mixture Using a Two‐Zone SMB/Chromatography Hybrid System. SEP SCI TECHNOL 2007. [DOI: 10.1080/01496390701206264] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Li P, Xiu G, Rodrigues AE. Proteins separation and purification by salt gradient ion-exchange SMB. AIChE J 2007. [DOI: 10.1002/aic.11259] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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