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Zhang S, Xiang X, Hu Y, Du H, Li J, Liu P, Zhao M, Chen H, Peng A, Cao Y. Rapid purification and scale-up of tilianin using counter-current chromatography with rectangular horizontal tubing. J Chromatogr A 2024; 1728:465031. [PMID: 38815477 DOI: 10.1016/j.chroma.2024.465031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/14/2024] [Accepted: 05/25/2024] [Indexed: 06/01/2024]
Abstract
In counter-current chromatography (CCC), linear scale-up is an ideal amplification strategy. However, when transferring from analytical to predictable preparative processes with high throughput, linear scale-up would be challenging due to limitations imposed by differences in instrument parameters, such as gravitational forces, tubing cross-section area, tubing length, column volume and flow rate. Some effective scale-up strategies have been studied for different instrument parameters, but so far, these scale-up works have only been tested on standard circular (SC) tubing. The previous research of our group found that rectangular horizontal (RH) tubing can double the separation efficiency compared with conventional SC tubing, and has industrial production potential. This paper used the separation of tilianin from Dracocephalum moldavica L. as an example to demonstrate how to scale up the optimized process from analytical SC tubing to preparative RH tubing. After systematic optimization of solvent systems, sample concentration and flow rate on the analytical CCC, the optimized parameters obtained were successfully transferred to the preparative CCC. The results showed that a crude sample of 2.07 g was successfully separated using a solvent system of n-hexane - ethyl acetate - ethanol - water (1:4:1:5, v/v/v/v) in reversed phase mode, and the three consecutive separations produced a total of 380 mg tilianin in 75 min with high purities of 98.3%, as analyzed by HPLC. The total throughput achieved from the analytical to semi-preparative scale was improved by 138 times (from 12 mg/h to 1.66 g/h), while the column volume was increased by only 46.5 times (from 15.5 mL to 720 mL). This is the successful application of CCC for the separation and purification of tilianin. Given that SC tubing is the traditional configuration for CCC columns, this study is a necessary step to prove the applicability of RH tubing columns for routine use and potential large-scale industrial applications.
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Affiliation(s)
- Shunjie Zhang
- Department of Emergency Medicine and Laboratory of Emergency Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, China
| | - Xinjie Xiang
- Department of Emergency Medicine and Laboratory of Emergency Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, China
| | - Yongan Hu
- The First Affiliated Hospital of Shihezi University, Xin Jiang, 832008, China
| | - Hongling Du
- Department of Emergency Medicine and Laboratory of Emergency Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, China
| | - Jingrun Li
- The First Affiliated Hospital of Shihezi University, Xin Jiang, 832008, China
| | - Peng Liu
- Department of Emergency Medicine and Laboratory of Emergency Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, China
| | - Min Zhao
- Department of Emergency Medicine and Laboratory of Emergency Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, China
| | - Haijun Chen
- School of Mechanical Engineering, Sichuan University, Chengdu, 610065, China; Yibin Industrial Technology Research Institute of Sichuan University, Yibin, 644000, China.
| | - Aihua Peng
- Department of Emergency Medicine and Laboratory of Emergency Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, China.
| | - Yu Cao
- Department of Emergency Medicine and Laboratory of Emergency Medicine, West China Hospital, West China School of Medicine, Sichuan University, Chengdu, 610041, China
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2
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Zhang S, Chen H, Deng X, Chen H, Guo C, Wan L, Peng A, Chen L. Advantages of rectangular horizontal tubing in the semi-preparative counter-current chromatography bobbin. J Chromatogr A 2021; 1657:462583. [PMID: 34624711 DOI: 10.1016/j.chroma.2021.462583] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/22/2021] [Accepted: 09/25/2021] [Indexed: 02/08/2023]
Abstract
Counter-current chromatography (CCC) is a widely used liquid-liquid separation technique. Much work has been performed to improve the retention of stationary phases and throughput. In previous research, high aspect ratio rectangular horizontal (RH) tubing has been proven to be able to improve resolution and throughput in comparison with standard circular (SC) tubing. However, those modifications and improvements of tubing shapes have only been tested on analytical tubing thus far. This study aims to verify whether RH tubing could achieve similar high stationary phase retention (Sf) and throughput on a semi-preparative CCC apparatus. First, a lighter and larger volume semi-preparative bobbin with thin-wall RH tubing was successfully manufactured. Then the Sf of this bobbin was tested with n-hexane-ethyl acetate-methanol-water (HEMWat) and dichloromethane-methanol-water (DMW) solvent systems, and its maximum throughput was explored with the mixture of Magnolia officinalis Rehd. Et Wils. The results show that the thin-wall RH tubing bobbin can retain high Sf for these solvent systems, even at a relatively high mobile phase flow rate, which is consistent with the analytical bobbin results. The throughput test demonstrates that 2.12 × throughput can be obtained with the RH tubing column bobbin compared to the conventional SC tubing column bobbin without changing the outside dimensions of the bobbin. The present study is a necessary step for the application of the RH tubing bobbin from a laboratory analytical scale to preparative industrial scale.
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Affiliation(s)
- Shunjie Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China; State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu 610062, China
| | - Haijun Chen
- Yibin Industrial Technology Research Institute of Sichuan University, Yibin 644000, China
| | - Xiaodie Deng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu 610062, China
| | - Hailu Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu 610062, China
| | - Chanjuan Guo
- Clinical Medical laboratory, West China Second University Hospital, Sichuan University, Chengdu 610062, China
| | - Li Wan
- State Key Laboratory of Southwestern Chinese Medicine Resource, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 611137, China.
| | - Aihua Peng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu 610062, China.
| | - Lijuan Chen
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu 610062, China
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3
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Yang Y, Khan BM, Zhang X, Zhao Y, Cheong KL, Liu Y. Advances in Separation and Purification of Bioactive Polysaccharides through High-speed Counter-Current Chromatography. J Chromatogr Sci 2021; 58:992-1000. [PMID: 32901274 DOI: 10.1093/chromsci/bmaa063] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 07/20/2020] [Accepted: 08/10/2020] [Indexed: 12/17/2022]
Abstract
Polysaccharides, with an extensive distribution in natural products, represent a group of natural bioactive substances having widespread applications in health-care food products and as biomaterials. Devising an efficient system for the separation and purification of polysaccharides from natural sources, hence, is of utmost importance in the widespread applicability and feasibility of research for the development of polysaccharide-based products. High-speed counter-current chromatography (HSCCC) is a continuous liquid-liquid partitioning chromatography with the ability to support a high loading amount and crude material treatment. Due to its flexible two-phase solvent system, HSCCC has been successfully used in the separation of many natural products. Based on HSCCC unique advantages over general column chromatography and its enhanced superiority in this regard when coupled to aqueous two-phase system (ATPS), this review summarizes the separation and purification of various bioactive polysaccharides through HSCCC and its coupling to ATPS as an aid in future research in this direction.
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Affiliation(s)
- Yu Yang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Department of Biology, College of Science, Shantou University, Daxue Road, Jinping District, Shantou, Guangdong 515063, PR China
| | - Bilal Muhammad Khan
- Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Department of Biology, College of Science, Shantou University, Daxue Road, Jinping District, Shantou, Guangdong 515063, PR China
| | - Xiping Zhang
- Department of Mechanical Engineering, College of Engineering, Shantou University, Daxue Road, Jinping District, Shantou, Guangdong 515063, P.R. China
| | - Yongjie Zhao
- Department of Mechanical Engineering, College of Engineering, Shantou University, Daxue Road, Jinping District, Shantou, Guangdong 515063, P.R. China
| | - Kit-Leong Cheong
- Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Department of Biology, College of Science, Shantou University, Daxue Road, Jinping District, Shantou, Guangdong 515063, PR China
| | - Yang Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, STU-UNIVPM Joint Algal Research Center, Department of Biology, College of Science, Shantou University, Daxue Road, Jinping District, Shantou, Guangdong 515063, PR China
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4
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Weisz A, Perez-Gonzalez M, Wood JF, Ridge CD, Ito Y. Identification, separation by spiral high-speed counter-current chromatography, and quantification of 7-chloro-5-methyl-2H-1,4-benzothiazin-3(4H)-one, an impurity in the thioindigoid color additive D&C Red No. 30 and its lakes. J Chromatogr A 2020; 1637:461863. [PMID: 33422799 DOI: 10.1016/j.chroma.2020.461863] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/07/2020] [Accepted: 12/26/2020] [Indexed: 10/22/2022]
Abstract
An impurity in the color additives D&C Red No. 30 (R30) and D&C Red No. 30 lakes (R30L) was newly identified and characterized as 7-chloro-5-methyl-2H-1,4-benzothiazin-3(4H)-one (BTZ), and its extent and level in certified batches of these color additives was determined. BTZ was extracted from the dye with ethanol, resulting in a crude extract enriched to a concentration of over 60%. BTZ was then separated from a portion of the enriched extract by high-speed counter-current chromatography using a spiral-tube assembly column with intermittently pressed tubing of 60 ml capacity. It was the first reported use of such a column to separate a small, moderately hydrophobic compound. The two-phase solvent system was also moderately hydrophobic, consisting of hexane-ethyl acetate-methanol-water (5:2:5:2), and the retention of the organic stationary phase measured after the separation was 83.3%. The separation yielded BTZ of two purity grades, the higher of which (~95.5%) was used as a standard to quantify the impurity in 37 batches of R30 and R30L using an HPLC method developed and validated for that purpose. Analyses revealed a wide range of BTZ levels across batches, <0.05 - 0.84%, and suggested that BTZ contamination could be reduced by appropriate adjustments in the manufacturing process. An explanation of the likely source of BTZ - as a side-reaction product in a particular step of the manufacturing process - was also presented.
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Affiliation(s)
- Adrian Weisz
- Office of Cosmetics and Colors, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, MD, USA.
| | - Marianita Perez-Gonzalez
- Office of Cosmetics and Colors, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, MD, USA
| | - Jackson F Wood
- Office of Cosmetics and Colors, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, MD, USA
| | - Clark D Ridge
- Office of Regulatory Science, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, MD, USA
| | - Yoichiro Ito
- Bioseparation Technology Laboratory, Biochemistry and Biophysics Center, NHLBI, National Institutes of Health, Bethesda, MD, USA
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5
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Liquid-liquid chromatography in enantioseparations. J Chromatogr A 2020; 1626:461345. [DOI: 10.1016/j.chroma.2020.461345] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 06/12/2020] [Accepted: 06/12/2020] [Indexed: 12/20/2022]
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6
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Quan KJ, Huang XY, Gong Y, Pei D, Duan WD, Di DL. Counter-current chromatography melamine-modified column and its separation mechanism. J Sep Sci 2018; 42:547-555. [PMID: 30427121 DOI: 10.1002/jssc.201800914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/09/2018] [Accepted: 11/04/2018] [Indexed: 11/08/2022]
Abstract
In this work, to further verify and develop the novel counter-current chromatography modified column separate mode, a melamine modified counter-current chromatography column was prepared. Meanwhile, the modified counter-current chromatography column was used to separate stevioside and rebaudioside A with the same partition coefficient in chosen solvent system to evaluate its separation efficiency. The results show that because of the presence of intermolecular forces between melamine and model compounds, better separation could be achieved on the modified column while it's almost impossible to be separated on the unmodified column. So the results of this research further show that column modified method is a possible approach to further increase the separation ability of counter-current chromatography. Take advantage of large sample handing capacity of counter-current chromatography, the mothed may have great potential to be an efficient method of separation and preparation enantiomer compounds.
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Affiliation(s)
- Kai-Jun Quan
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Xin-Yi Huang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, P. R. China
| | - Yuan Gong
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Dong Pei
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, P. R. China
| | - Wen-Da Duan
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, P. R. China.,University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Duo-Long Di
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, P. R. China
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7
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Peng A, Hewitson P, Sutherland I, Chen L, Ignatova S. The effect of increasing centrifugal acceleration/force and flow rate for varying column aspect ratios on separation efficiency in Counter-Current Chromatography. J Chromatogr A 2018; 1581-1582:80-90. [PMID: 30442474 DOI: 10.1016/j.chroma.2018.10.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/19/2018] [Accepted: 10/24/2018] [Indexed: 02/05/2023]
Abstract
Increasing column/tubing aspect ratio has been shown in a feasibility study to improve column efficiency when operating in reversed phase mode. This paper contains a thorough investigation on how increases in mobile phase flow and centrifugal force field affect stationary phase retention and column efficiency (as measured by the resolution between adjacent peaks) for columns wound with rectilinear tubing of different aspect ratio. The study uses a Mini CCC instrument operating from 1500 to 2100 rpm (126-246 g) to compare three columns with the same cross-sectional area but different aspect ratio - rectangular horizontal (force field perpendicular to the flat side - aspect ratio 3.125); square (aspect ratio 1.0) and rectangular vertical (flat side parallel with force field - aspect ratio 0.32). Columns are compared by measuring stationary phase retention, resolution and normalized resolution for 3 different mobile phase flow rates 2, 4 and 8 ml/min in both normal phase and reversed phase modes. The results with rectilinear tubing are compared to conventional circular tubing with the same cross-sectional area. The results show that resolution increases with aspect ratio and that at the highest aspect ratio the highest flow rate can maintain a high efficiency only if the highest g-field of 246 g is used. When comparing the rectangular horizontal tubing which gave the best results with conventional circular tubing with the same cross-sectional area a 45% improvement was found in reversed phase mode and a 51% improvement in normal phase mode over the conventional circular cross-section tubing. In other words, a rectangular horizontally wound bobbin with half the length of tubing can achieve the same result as a circular one. These are very significant results for halving separation times analytically or enabling designers to produce new instruments of the same capacity with a much-reduced size.
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Affiliation(s)
- Aihua Peng
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, 610065, China
| | - Peter Hewitson
- Advanced Bioprocessing Centre, Institute of Environment, Health and Societies, Brunel University London, Uxbridge, Middlesex, UB8 3PH, UK
| | - Ian Sutherland
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, 610065, China; Advanced Bioprocessing Centre, Institute of Environment, Health and Societies, Brunel University London, Uxbridge, Middlesex, UB8 3PH, UK.
| | - Lijuan Chen
- State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu, 610065, China.
| | - Svetlana Ignatova
- Advanced Bioprocessing Centre, Institute of Environment, Health and Societies, Brunel University London, Uxbridge, Middlesex, UB8 3PH, UK
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Quan KJ, Xi XJ, Huang XY, Duan WD, Pei D, Di DL. A simple gradient equilibrium method for better separation in countercurrent chromatography. J Sep Sci 2018; 41:3863-3870. [PMID: 30152913 DOI: 10.1002/jssc.201800533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/16/2018] [Accepted: 08/11/2018] [Indexed: 11/11/2022]
Abstract
The stationary phase retention is one of the most important parameters in countercurrent chromatography. In this work, a simple gradient equilibrium method was developed to further improve the stationary phase retention based on the optimized condition in the traditional equilibrium model. Meanwhile, this novel gradient equilibrium method was used to separate three flavone model compounds and compared with the conventional isocratic equilibrium method to evaluate the separation efficiency. The results show that better resolution or shorter separation time could be achieved with gradient equilibrium compared to isocratic equilibrium. So this novel equilibrium method has enormous potential for obtaining a better separation or saving the separating time in the preparative separation of target compounds.
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Affiliation(s)
- Kai-Jun Quan
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, China.,University of the Chinese Academy of Sciences, Beijing, China
| | - Xing-Jun Xi
- Food and Agriculture Standardization Institute, China National Institute of Standardization, Beijing, China
| | - Xin-Yi Huang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, China
| | - Wen-Da Duan
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, China.,University of the Chinese Academy of Sciences, Beijing, China
| | - Dong Pei
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, China
| | - Duo-Long Di
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Chinese Academy of Sciences, Lanzhou Institute of Chemical Physics, Lanzhou, China
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9
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Huang XY, Pei D, Liu JF, Di DL. A review on chiral separation by counter-current chromatography: Development, applications and future outlook. J Chromatogr A 2018; 1531:1-12. [DOI: 10.1016/j.chroma.2017.10.073] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 10/27/2017] [Accepted: 10/29/2017] [Indexed: 12/21/2022]
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10
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Ito Y, Clary R. Comparison in partition efficiency of protein separation between four different tubing modifications in spiral high-speed countercurrent chromatography. SEPARATIONS 2016; 3:31. [PMID: 27790621 PMCID: PMC5076879 DOI: 10.3390/separations3040031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
High-speed countercurrent chromatography with a spiral tube assembly can retain a satisfactory amount of stationary phase of polymer phase systems used for protein separation. In order to improve the partition efficiency a simple tool to modify the tubing shapes was fabricated, and the following four different tubing modifications were made: intermittently pressed at 10 mm width, flat, flat-wave, and flat-twist. Partition efficiencies of the separation column made from these modified tubing were examined in protein separation with an aqueous-aqueous polymer phase system at flow rates of 1-2 ml/min under 800 rpm. The results indicated that the column with all modified tubing improved the partition efficiency at a flow rate of 1 ml/min, but at a higher flow rate of 2 ml/min the columns made of flattened tubing showed lowered partition efficiency apparently due to the loss of the retained stationary phase. Among all the modified columns, the column with intermittently pressed tubing gave the best peak resolution. It may be concluded that the intermittently pressed and flat-twist improve the partition efficiency in a semi-preparative separation while other modified tubing of flat and flat-wave configurations may be used for analytical separations with a low flow rate.
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Affiliation(s)
- Yoichiro Ito
- Laboratory of Bioseparation Technology, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892. USA
| | - Robert Clary
- Machine Instrumentation Design and Fabrication, National Institutes of Health, Bethesda, MD 20892, USA
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11
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Shinomiya K, Umezawa M, Seki M, Nitta J, Zaima K, Harikai N, Ito Y. Improved Separations of Proteins and Sugar Derivatives Using the Small-Scale Cross-Axis Coil Planet Centrifuge with Locular Multilayer Coiled Columns. SEPARATIONS 2016; 3. [PMID: 27891507 DOI: 10.3390/separations3040029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
1 BACKGROUND Countercurrent chromatography (CCC) is liquid-liquid partition chromatography without using a solid support matrix. This technique requires further improvement of partition efficiency and shortening theseparation time. 2 METHODS The locular multilayer coils modified with and without mixer glass beads were developed for the separation of proteins and 4-methylumbelliferyl (MU) sugar derivatives using the small-scale cross-axis coil planet centrifuge. 3 RESULTS Proteins were well separated from each other and the separation was improved at a low flow rate of the mobile phase. On the other hand, 4-MU sugar derivatives were sufficiently resolved with short separation time at a highflow rate of the mobile phase under satisfactory stationary phase retention. 4 CONCLUSION Effective separations were achieved using the locular multilayer coil for proteins with aqueous-aqueous polymer phase systems and for 4-MU sugar derivatives with organic-aqueous two-phase solvent systems by inserting a glass bead into each locule.
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Affiliation(s)
- Kazufusa Shinomiya
- School of Pharmacy, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Motoki Umezawa
- School of Pharmacy, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Manami Seki
- School of Pharmacy, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Jun Nitta
- School of Pharmacy, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Kazumasa Zaima
- School of Pharmacy, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Naoki Harikai
- School of Pharmacy, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Yoichiro Ito
- Laboratory of Bioseparation Technology, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, 10 Center Drive, Building 10, Room 8N230, Bethesda, MD 20892-1762, USA
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12
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Englert M, Vetter W. Tubing modifications for countercurrent chromatography: Investigation of geometrical parameters. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1177546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Michael Englert
- Institute of Food Chemistry, University of Hohenheim, Stuttgart, Germany
| | - Walter Vetter
- Institute of Food Chemistry, University of Hohenheim, Stuttgart, Germany
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