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Li Y, Li T, An H, Wang X, Han J, Wang Y. Extraction and separation of anthocyanins from Kushui rose by ethanol-(NH 4) 2SO 4 aqueous two-phase system. RSC Adv 2024; 14:21250-21259. [PMID: 38974229 PMCID: PMC11224949 DOI: 10.1039/d4ra03195d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 06/21/2024] [Indexed: 07/09/2024] Open
Abstract
Simultaneous extraction of anthocyanins and removal of sugars from Kushui rose was performed using an ethanol-ammonium sulphate aqueous two-phase system (ATPS). The effects of different parameters, such as type of salt, concentrations of salt and ethanol, temperature and pH on the partition coefficient and recovery of anthocyanins in the top system and sugars in the bottom system were studied. Furthermore, an experimental design of a three-level three-factor Box-Behnken design response surface methodology (RSM) was used to obtain optimal extraction conditions. The maximum partition coefficient (5.64) and recovery (78%) of anthocyanins in the top system within the investigated range were obtained at 22% (w/w) concentration of ammonium sulphate, 25% (w/w) concentration of ethanol, pH 5 and 33.5 °C. During the discussion of the main factors, the maximum recovery of sugars reached 70.09%. The HPLC profile of anthocyanins obtained from the ATPS top phase was similar to that of anthocyanins extracted by ethanol, which indicated that the ethanol-ammonium sulphate ATPS was suitable for the extraction of anthocyanins. On the basis of the anthocyanin stability experiment, anthocyanins extracted from Kushui rose should be stored at low pH and temperature.
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Affiliation(s)
- Yuanyuan Li
- Jingjiang College, Jiangsu University Zhenjiang 212013 PR China
| | - Tongyu Li
- Jingjiang College, Jiangsu University Zhenjiang 212013 PR China
| | - Hongxu An
- Jingjiang College, Jiangsu University Zhenjiang 212013 PR China
| | - Xinyi Wang
- Jingjiang College, Jiangsu University Zhenjiang 212013 PR China
| | - Juan Han
- School of Food and Biological Engineering, Jiangsu University Zhenjiang 212013 PR China
| | - Yun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University Zhenjiang 212013 PR China
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de Oliveira RL, Bernardino MIDS, Silva TBS, Converti A, Porto CS, Porto TS. Extraction and purification of Aspergillus tamarii β-fructofuranosidase with transfructosylating activity using aqueous biphasic systems (PEG/phosphate) and magnetic field. Prep Biochem Biotechnol 2021; 52:478-486. [PMID: 34428129 DOI: 10.1080/10826068.2021.1964085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
β-fructofuranosidases (FFases) are enzymes involved in sucrose hydrolysis and fructo-oligosaccharides' production which are of great interest for the food industry. FFase from Aspergillus tamarii URM4634 was extracted using PEG/Phosphate Aqueous Biphasic Systems (ABS), and the impact of magnetic field on the extraction behavior was evaluated. A 24-full experimental design was employed to study the influence of molar mass of PEG, concentrations of PEG and phosphate and pH on the selected response variables, i.e., partition coefficient (K), purification factor (PF), activity yield (Y) and selectivity (S). The influence of magnetic field during partition and NaCl concentration on the same responses was also studied. The best results of FFase extraction without magnetic field (K = 0.50, PF = 4.05, Y = 72.66% and S = 0.06) were observed at pH 8.0 using 12.5% (w/w) PEG 400 and 25% (w/w) NaH2PO4/K2HPO4. Application of the magnetic field allowed improving the performance, with the best results being obtained at the longest distance between magnets (lowest magnetic field) and absence of NaCl (K = 0.93, PF = 4.22, Y = 83.79% and S = 0.09). The outcomes obtained demonstrate that ABS combination with low intensity magnetic field can be used as an efficient FFase pre-purification method.
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Affiliation(s)
| | | | | | - Attilio Converti
- Department Civil, Chemical and Environmental Engineering, University of Genoa, Genoa, Italy
| | | | - Tatiana Souza Porto
- Department of Morphology and Animal Physiology, Federal Rural University of Pernambuco, Recife, Brazil
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Gharat NN, Rathod VK. Response surface methodology for the extraction of wedelolactone from Eclipta alba using aqueous two-phase extraction. Prep Biochem Biotechnol 2020; 50:827-833. [DOI: 10.1080/10826068.2020.1753071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Neha N. Gharat
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, India
| | - Virendra K. Rathod
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, India
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Xiang C, Chang J, Yue YY, Wang J, Fu Y. The Application of Aqueous Two-phase System in the Extraction of Natural Products from Chinese Herbal Medicine: A Review. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190404163748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
In the past decades, Chinese herbal medicine has attracted
worldwide attention because they contain a variety of active ingredients which are beneficial
to human health. As a result, there is a growing interest in the extraction of these substances.
However, traditional extraction methods not only need a large amount of extractant,
but are also time-consuming, moreover, the extraction efficiency is extremely poor
and tedious purification steps are required to purify the crude extract. Thus, researchers
hope to find an alternative method for the extraction of these components and the aqueous
two-phase system (ATPS) seems to be one.
Objective:
This review focuses on introducing the properties of the aqueous two-phase
system and summarizing the application of ATPS in the extraction of natural products.
Meanwhile, this review also provided a guideline to researchers who wish to design a suitable ATPS for a specific
target and how to amplify it to industrial-scale.
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Affiliation(s)
- Cheng Xiang
- Key Laboratory of Heat Transfer Enhancement and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jie Chang
- Key Laboratory of Heat Transfer Enhancement and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Ying Ying Yue
- Key Laboratory of Heat Transfer Enhancement and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Ju Wang
- Key Laboratory of Heat Transfer Enhancement and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yan Fu
- Key Laboratory of Heat Transfer Enhancement and Energy Conservation, Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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Torres-Acosta MA, Mayolo-Deloisa K, González-Valdez J, Rito-Palomares M. Aqueous Two-Phase Systems at Large Scale: Challenges and Opportunities. Biotechnol J 2018; 14:e1800117. [PMID: 29878648 DOI: 10.1002/biot.201800117] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/10/2018] [Indexed: 11/06/2022]
Abstract
Aqueous two-phase systems (ATPS) have proved to be an efficient and integrative operation to enhance recovery of industrially relevant bioproducts. After ATPS discovery, a variety of works have been published regarding their scaling from 10 to 1000 L. Although ATPS have achieved high recovery and purity yields, there is still a gap between their bench-scale use and potential industrial applications. In this context, this review paper critically analyzes ATPS scale-up strategies to enhance the potential industrial adoption. In particular, large-scale operation considerations, different phase separation procedures, the available optimization techniques (univariate, response surface methodology, and genetic algorithms) to maximize recovery and purity and economic modeling to predict large-scale costs, are discussed. ATPS intensification to increase the amount of sample to process at each system, developing recycling strategies and creating highly efficient predictive models, are still areas of great significance that can be further exploited with the use of high-throughput techniques. Moreover, the development of novel ATPS can maximize their specificity increasing the possibilities for the future industry adoption of ATPS. This review work attempts to present the areas of opportunity to increase ATPS attractiveness at industrial levels.
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Affiliation(s)
- Mario A Torres-Acosta
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Eugenio Garza Sada 2501 Sur, Monterrey, NL, 64849, México
| | - Karla Mayolo-Deloisa
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Eugenio Garza Sada 2501 Sur, Monterrey, NL, 64849, México
| | - José González-Valdez
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Eugenio Garza Sada 2501 Sur, Monterrey, NL, 64849, México
| | - Marco Rito-Palomares
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Av. Eugenio Garza Sada 2501 Sur, Monterrey, NL, 64849, México.,Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Av. Morones Prieto 3000 Pte, Col. Los Doctores, Monterrey, NL, 64710, México
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Nadar SS, Pawar RG, Rathod VK. Recent advances in enzyme extraction strategies: A comprehensive review. Int J Biol Macromol 2017; 101:931-957. [DOI: 10.1016/j.ijbiomac.2017.03.055] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 03/07/2017] [Accepted: 03/10/2017] [Indexed: 12/19/2022]
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What are the structural features that drive partitioning of proteins in aqueous two-phase systems? BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2017; 1865:113-120. [DOI: 10.1016/j.bbapap.2016.09.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 08/26/2016] [Accepted: 09/18/2016] [Indexed: 02/07/2023]
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Predicting protein partition coefficients in aqueous two phase system. J Chromatogr A 2016; 1470:50-58. [DOI: 10.1016/j.chroma.2016.09.072] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 07/01/2016] [Accepted: 09/30/2016] [Indexed: 01/22/2023]
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Dong J, Han J, Wang Y, Tang X, Ni L, Zhang W, Wang L. Equilibrium phase behavior of aqueous two-phase systems containing 17R4/L64 and citrates. J DISPER SCI TECHNOL 2016. [DOI: 10.1080/01932691.2016.1234388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Jian Dong
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, China
| | - Juan Han
- School of Food and Biological Engineering, Jiangsu University Zhenjiang, China
| | - Yun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, China
| | - Xu Tang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, China
| | - Liang Ni
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, China
| | - Wenli Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, China
| | - Lei Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, China
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de Barros DP, Campos SR, Madeira PP, Azevedo AM, Baptista AM, Aires-Barros MR. Modeling the partitioning of amino acids in aqueous two phase systems. J Chromatogr A 2014; 1329:52-60. [DOI: 10.1016/j.chroma.2013.12.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/02/2013] [Accepted: 12/04/2013] [Indexed: 10/25/2022]
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12
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Dismer F, Alexander Oelmeier S, Hubbuch J. Molecular dynamics simulations of aqueous two-phase systems: Understanding phase formation and protein partitioning. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2013.03.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Effects of chemical modifications in the partition behavior of proteins in aqueous two-phase systems: A case study with RNase A. Biotechnol Prog 2013; 29:378-85. [DOI: 10.1002/btpr.1684] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 12/19/2012] [Indexed: 11/07/2022]
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Liu Y, Wu Z, Zhang Y, Yuan H. Partitioning of biomolecules in aqueous two-phase systems of polyethylene glycol and nonionic surfactant. Biochem Eng J 2012. [DOI: 10.1016/j.bej.2012.08.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Josch J, Strube J. Characterization of Feed Properties for Conceptual Process Design Involving Complex Mixtures. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201200030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Josch JP, Both S, Strube J. Characterization of Feed Properties for Conceptual Process Design Involving Complex Mixtures, Such as Natural Extracts. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/fns.2012.36112] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Asenjo JA, Andrews BA. Aqueous two-phase systems for protein separation: a perspective. J Chromatogr A 2011; 1218:8826-35. [PMID: 21752387 DOI: 10.1016/j.chroma.2011.06.051] [Citation(s) in RCA: 274] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 06/02/2011] [Accepted: 06/08/2011] [Indexed: 11/17/2022]
Abstract
Aqueous two-phase systems (ATPS) that are formed by mixing a polymer (usually polyethylene glycol, PEG) and a salt (e.g. phosphate, sulphate or citrate) or two polymers and water can be effectively used for the separation and purification of proteins. The partitioning between both phases is dependent on the surface properties of the proteins and on the properties of the two phase system. The mechanism of partitioning is complex and not very easy to predict but, as this review paper shows, some very clear trends can be established. Hydrophobicity is the main determinant in the partitioning of proteins and can be measured in many different ways. The two methods that are more attractive, depending on the ATPS used (PEG/salt, PEG/polymer), are those that consider the 3-D structure and the hydrophobicity of AA on the surface and the one based on precipitation with ammonium sulphate (parameter 1/m*). The effect of charge has a relatively small effect on the partitioning of proteins in PEG/salt systems but is more important in PEG/dextran systems. Protein concentration has an important effect on the partitioning of proteins in ATPS. This depends on the higher levels of solubility of the protein in each of the phases and hence the partitioning observed at low protein concentrations can be very different to that observed at high concentrations. In virtually all cases the partition coefficient is constant at low protein concentration (true partitioning) and changes to a different constant value at a high overall protein concentration. Furthermore, true partitioning behavior, which is independent of the protein concentration, only occurs at relatively low protein concentration. As the concentration of a protein exceeds relatively low values, precipitation at the interface and in suspension can be observed. This protein precipitate is in equilibrium with the protein solubilized in each of the phases. Regarding the effect of protein molecular weight, no clear trend of the effect on partitioning has been found, apart from PEG/dextran systems where proteins with higher molecular weights partitioned more readily to the bottom phase. Bioaffinity has been shown in many cases to have an important effect on the partitioning of proteins. The practical application of ATPS has been demonstrated in many cases including a number of industrial applications with excellent levels of purity and yield. This separation and purification has also been successfully used for the separation of virus and virus-like particles.
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Affiliation(s)
- Juan A Asenjo
- Centre for Biochemical Engineering and Biotechnology, Department of Chemical Engineering and Biotechnology, Institute for Cell Dynamics and Biotechnology: A Centre for Systems Biology, University of Chile, Beauchef 850, Santiago, Chile.
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Hahn T, Münchow G, Hardt S. Electrophoretic transport of biomolecules across liquid-liquid interfaces. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:184107. [PMID: 21508474 DOI: 10.1088/0953-8984/23/18/184107] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The mass transfer resistance of a liquid-liquid interface in an aqueous two-phase system composed of poly(ethylene glycol) and dextran is investigated. Different types of proteins and DNA stained with fluorescent dyes serve as probes to study the transport processes close to the interface. A microfluidic device is employed to enable the electrophoretic transport of biomolecules from one phase to another. The results obtained for proteins can be explained solely via the different electrophoretic mobilities and different affinities of the molecules to the two phases, without any indications of a significant mass transfer resistance of the liquid-liquid interface. By contrast, DNA molecules adsorb to the interface and only desorb under an increased electric field strength. The desorption process carries the signature of a thermally activated escape from a metastable state, as reflected in the exponential decay of the fluorescence intensity at the interface as a function of time.
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Affiliation(s)
- Thomas Hahn
- Center of Smart Interfaces, TU Darmstadt, Darmstadt, Germany.
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Berrill A, Ho SV, Bracewell DG. Mass spectrometry to describe product and contaminant adsorption properties for bioprocess development. Biotechnol Bioeng 2011; 108:1862-71. [DOI: 10.1002/bit.23115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Revised: 01/21/2011] [Accepted: 02/14/2011] [Indexed: 11/09/2022]
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Andrews BA, Asenjo JA. Theoretical and Experimental Evaluation of Hydrophobicity of Proteins to Predict their Partitioning Behavior in Aqueous Two Phase Systems: A Review. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496395.2010.507436] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Garza-Madrid M, Rito-Palomares M, Serna-Saldívar SO, Benavides J. Potential of Aqueous Two-Phase Systems constructed on flexible devices: Human serum albumin as proof of concept. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.03.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Canales M, Ballesteros C, Moreno-Cid JA, Espinosa AM, Villar M, de la Fuente J. Extractive bioconversion to produce the Aedes albopictus akirin in an aqueous two-phase system supporting Pichia pastoris growth and protein secretion. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2009.04.014] [Citation(s) in RCA: 19] [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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Platis D, Labrou NE. Application of a PEG/salt aqueous two-phase partition system for the recovery of monoclonal antibodies from unclarified transgenic tobacco extract. Biotechnol J 2009; 4:1320-7. [PMID: 19557796 DOI: 10.1002/biot.200800359] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Aqueous two-phase partition systems (ATPS) have been widely used for the separation of a large variety of biomolecules. In the present report, the application of a polyethylene glycol/phosphate (PEG/phosphate) ATPS for the separation of anti-HIV monoclonal antibodies 2G12 (mAb 2G12) and 4E10 (mAb 4E10) from unclarified transgenic tobacco crude extract was investigated. Optimal conditions that favor opposite phase partitioning of plant debris/mAb as well as high recovery and purification were found to be 13.1% w/w (PEG 1500), 12.5% w/w (phosphate) at pH 5 with a phase ratio of 1.3 and 8.25% w/w unclarified tobacco extract load. Under these conditions, mAb 2G12 and mAb 4E10 were partitioned at the bottom phosphate phase with 85 and 84% yield and 2.4- and 2.1-fold purification, respectively. The proposed ATPS was successfully integrated in an affinity-based purification protocol, using Protein A, yielding antibodies of high purity and yield. In this study, ATPS was shown to be suitable for initial protein recovery and partial purification of mAb from unclarified transgenic tobacco crude extract.
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Affiliation(s)
- Dimitris Platis
- Enzyme Technology Laboratory, Department of Agricultural Biotechnology, Agricultural University of Athens, Athens, Greece
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Methods of calculating protein hydrophobicity and their application in developing correlations to predict hydrophobic interaction chromatography retention. J Chromatogr A 2008; 1216:1838-44. [PMID: 19100553 DOI: 10.1016/j.chroma.2008.11.089] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 11/25/2008] [Accepted: 11/27/2008] [Indexed: 11/23/2022]
Abstract
Hydrophobic interaction chromatography (HIC) is a key technique for protein separation and purification. Different methodologies to estimate the hydrophobicity of a protein are reviewed, which have been related to the chromatographic behavior of proteins in HIC. These methodologies consider either knowledge of the three-dimensional structure or the amino acid composition of proteins. Despite some restrictions; they have proven to be useful in predicting protein retention time in HIC.
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Maestro B, Velasco I, Castillejo I, Arévalo-Rodríguez M, Cebolla Á, Sanz JM. Affinity partitioning of proteins tagged with choline-binding modules in aqueous two-phase systems. J Chromatogr A 2008; 1208:189-96. [DOI: 10.1016/j.chroma.2008.08.106] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Accepted: 08/25/2008] [Indexed: 10/21/2022]
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Benavides J, Aguilar O, Lapizco-Encinas B, Rito-Palomares M. Extraction and Purification of Bioproducts and Nanoparticles using Aqueous Two-Phase Systems Strategies. Chem Eng Technol 2008. [DOI: 10.1002/ceat.200800068] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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