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Xu P, Xiang H, Wen W, Quan S, Qiu H, Chu C, Tong S. Application of two-dimensional reversed phase countercurrent chromatography × high-performance liquid chromatography to bioactivity-guided screening and isolation of α-glucosidase inhibitors from Rheum palmatum L. J Chromatogr A 2024; 1717:464667. [PMID: 38301331 DOI: 10.1016/j.chroma.2024.464667] [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: 10/21/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/03/2024]
Abstract
In the present work, comprehensive two-dimensional reversed-phase countercurrent chromatography × reversed-phase liquid chromatography combined (2D RPCCC × RPLC) with 2D microfraction bioactive evaluation was employed to screen and isolate α-glucosidase inhibitors from Rheum palmatum L. Countercurrent chromatography was employed to improve 2D analysis and preparative separation. A selected biphasic solvent system composed of petroleum ether/ethyl acetate/methanol/water with gradient elution mode was used for the first dimension RPCCC separation (1D RPCCC). Solid-phase extraction was applied to eliminate interfering polar compounds before the second dimension analysis (2D RPLC). 76 components were shown in 2D contour plot in UV 280 nm. 11 Candidates were separated by a scaled-up CCC and identified by 1H NMR and 13C NMR, including anthraquinones, flavonoids, stilbenes, phenols, and glucoside derivatives. In addition, it was found that two components, resveratrol-4'-O-(6″-galloyl)glucoside (36) and lyciumaside (43) were identified as natural α-glucosidase inhibitors in Rheum palmatum L. for the first time.
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Affiliation(s)
- Ping Xu
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Haiping Xiang
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Weiyi Wen
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Sihua Quan
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Huiyun Qiu
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Chu Chu
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China
| | - Shengqiang Tong
- College of Pharmaceutical Science, Zhejiang University of Technology, Gongda Road 1, Huzhou 313200, China.
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Hitzman R, Malca-Garcia GR, Howell C, Park HY, Friesen JB, Dong H, Dunlap T, McAlpine JB, Vollmer G, Bosland MC, Nikolić D, Lankin DC, Chen SN, Bolton JL, Pauli GF, Dietz BM. DESIGNER fraction concept unmasks minor bioactive constituents in red clover (Trifolium pratense L.). PHYTOCHEMISTRY 2023; 214:113789. [PMID: 37482264 PMCID: PMC10528883 DOI: 10.1016/j.phytochem.2023.113789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/25/2023]
Abstract
In botanical extracts, highly abundant constituents can mask or dilute the effects of other, and often, more relevant biologically active compounds. To facilitate the rational chemical and biological assessment of these natural products with wide usage in human health, we introduced the DESIGNER approach of Depleting and Enriching Selective Ingredients to Generate Normalized Extract Resources. The present study applied this concept to clinical Red Clover Extract (RCE) and combined phytochemical and biological methodology to help rationalize the utility of RCE supplements for symptom management in postmenopausal women. Previous work has demonstrated that RCE reduces estrogen detoxification pathways in breast cancer cells (MCF-7) and, thus, may serve to negatively affect estrogen metabolism-induced chemical carcinogenesis. Clinical RCE contains ca. 30% of biochanin A and formononetin, which potentially mask activities of less abundant compounds. These two isoflavonoids are aryl hydrocarbon receptor (AhR) agonists that activate P450 1A1, responsible for estrogen detoxification, and P450 1B1, producing genotoxic estrogen metabolites in female breast cells. Clinical RCE also contains the potent phytoestrogen, genistein, that downregulates P450 1A1, thereby reducing estrogen detoxification. To identify less abundant bioactive constituents, countercurrent separation (CCS) of a clinical RCE yielded selective lipophilic to hydrophilic metabolites in six enriched DESIGNER fractions (DFs 01-06). Unlike solid-phase chromatography, CCS prevented any potential loss of minor constituents or residual complexity (RC) and enabled the polarity-based enrichment of certain constituents. Systematic analysis of estrogen detoxification pathways (ERα-degradation, AhR activation, CYP1A1/CYP1B1 induction and activity) of the DFs uncovered masked bioactivity of minor/less abundant constituents including irilone. These data will allow the optimization of RCE with respect to estrogen detoxification properties. The DFs revealed distinct biological activities between less abundant bioactives. The present results can inspire future carefully designed extracts with phytochemical profiles that are optimized to increase in estrogen detoxification pathways and, thereby, promote resilience in women with high-risk for breast cancer. The DESIGNER approach helps to establish links between complex chemical makeup, botanical safety and possible efficacy parameters, yields candidate DFs for (pre)clinical studies, and reveals the contribution of minor phytoconstituents to the overall safety and bioactivity of botanicals, such as resilience promoting activities relevant to women's health.
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Affiliation(s)
- Ryan Hitzman
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - Gonzalo R Malca-Garcia
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - Caitlin Howell
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - Hyun-Young Park
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - J Brent Friesen
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA; Physical Sciences Department, Rosary College of Arts and Sciences, Dominican University, 7900 Division Street, River Forest, IL, 60305, USA
| | - Huali Dong
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - Tareisha Dunlap
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - James B McAlpine
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - Guenter Vollmer
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA; Technische Universität Dresden, Faculty of Biology, Chair for Molecular Cell Physiology & Endocrinology, D-01062, Dresden, Germany
| | - Maarten C Bosland
- Department of Pathology, College of Medicine, University of Illinois Chicago, 840 S. Wood Street, Chicago, IL, 60612, USA
| | - Dejan Nikolić
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - David C Lankin
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - Shao-Nong Chen
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - Judy L Bolton
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA
| | - Guido F Pauli
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA.
| | - Birgit M Dietz
- UIC Center for Botanical Dietary Supplements Research and Center for Natural Product Technologies, Pharmacognosy Institute, and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois Chicago, 833 S. Wood Street, Chicago, IL, 60612, USA.
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Solvent strength of organic phase for two biphasic solvent systems in high speed countercurrent chromatography. J Chromatogr A 2022; 1680:463422. [PMID: 36037578 DOI: 10.1016/j.chroma.2022.463422] [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: 06/23/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/21/2022]
Abstract
In this work, relationships between solvent strength of organic phase (ψ) for two biphasic solvent systems in high speed countercurrent chromatography, hexane-ethyl-acetate-methanol-water (HEMWat) and ethyl acetate-n-butanol-water (EBuWat), and partition coefficient (K) were investigated using four retention models, including Jandera's model (ABM), Neue-Kuss model (NK), linear-solvent-strength model (LSS) and quadratic-solvent-strength model (QSS). Experimental results showed that ABM model had the best fitting results for HEMWat system while NK model and QSS model had good fitting results in EBuWat system. Thus, a mathematical relationship between partition coefficient (K) and solvent strength of organic phase (ψ) could be obtained by measurement of partition coefficients of the target compounds with three different volume ratios of organic phase. At the same time, a functional map was proposed to construct to get a maneuverable region so that an optimal two-phase solvent system for separation of a target compound could be selected easily, which saved a lot of manpower for high speed countercurrent chromatographic separation. The application of this new method was declared by successful separation of two components, apigenin-6-C-β-D-xylopyranosyl-8-C-α-L-arabinopyranoside and vicenin-3, from dried leaves of Dendrobium officinale Kimura et Migo using high speed countercurrent chromatography.
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Kostanyan AE, Klychevskikh YA, Milevskii NA, Safonov TS, Voshkin AA. Analysis of Extraction Separation in a Cascade of Mixing-Settling Extractors in a Recirculation Liquid-Liquid Chromatography Mode. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2022. [DOI: 10.1134/s0040579522030095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kostanyan AE, Milevsky NA, Voshkin AA. Analysis of the Processes of Extraction–Chromatographic Separation in a Cascade of Mixing–Settling Extractors. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2021. [DOI: 10.1134/s0040579521050249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhang W, Zhang Y, Wang J, Duan W, Liu F. Combined Ultrahigh Pressure Extraction and High-Speed Counter-Current Chromatography for Separation and Purification of Three Glycoside Compounds from Dendrobium officinale Protocorm. Molecules 2021; 26:molecules26133934. [PMID: 34203202 PMCID: PMC8271780 DOI: 10.3390/molecules26133934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/13/2021] [Accepted: 06/24/2021] [Indexed: 12/03/2022] Open
Abstract
As an alternative to Dendrobium candidum, protocorm-like bodies (PLBs) of Dendrobium candidum are of great value due to their high yield and low cost. In this work, three glycoside compounds, β-D-glucopyranose 1-[(E)-3-(4-hydroxyphenyl)-2-propenoat] (I), β-D-glucopyranose 1-[(E)-3-(3, 4-dihydroxyphenyl)-2-propenoat] (II), and 1-O-sinapoyl glucopyranoside (III), were extracted and isolated by ultrahigh pressure extraction (UPE) coupled with high-speed counter-current chromatography (HSCCC) from PLBs of D. officinale. First, the target compounds were optimized and prepared with 50% ethanol solution at a 1:30 (g/mL) solid/liquid ratio in 2 min under 300 MPa by UPE. Then, the crude extract was chromatographed with a silica gel column, and primary separation products were obtained. In addition, the products (150 mg) were separated by HSCCC under the solvent system of MTBE-n-butyl alcohol-acetonitrile-water (5:1:2:6, v/v/v/v), yielding 31.43 mg of compound I, 10.21 mg of compound II, and 24.75 mg of compound III. Their structures were further identified by ESI-MS, 1H NMR, and 13C NMR. The antioxidant results showed that the three compounds expressed moderate effects on the DPPH· scavenging effect. Compound II had the best antioxidant capacity and its IC50 value was 0.0497 mg/mL.
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Affiliation(s)
- Wei Zhang
- School of Pharmaceutical Sciences, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China; (W.Z.); (J.W.); (W.D.)
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China;
| | - Yingjie Zhang
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China;
| | - Jinying Wang
- School of Pharmaceutical Sciences, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China; (W.Z.); (J.W.); (W.D.)
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China;
| | - Wenjuan Duan
- School of Pharmaceutical Sciences, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China; (W.Z.); (J.W.); (W.D.)
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China;
| | - Feng Liu
- School of Pharmaceutical Sciences, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China; (W.Z.); (J.W.); (W.D.)
- Shandong Analysis and Test Center, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Academy of Sciences, Qilu University of Technology, Jinan 250014, China;
- Correspondence: or ; Tel.: +86-0531-8260-5319
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Morley R, Minceva M. Liquid-Liquid Chromatography: Current Design Approaches and Future Pathways. Annu Rev Chem Biomol Eng 2021; 12:495-518. [PMID: 33848424 DOI: 10.1146/annurev-chembioeng-101420-033548] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Since its first appearance in the 1960s, solid support-free liquid-liquid chromatography has played an ever-growing role in the field of natural products research. The use of the two phases of a liquid biphasic system, the mobile and stationary phases, renders the technique highly versatile and adaptable to a wide spectrum of target molecules, from hydrophobic to highly polar small molecules to proteins. Generally considered a niche technique used only for small-scale preparative separations, liquid-liquid chromatography currently lags far behind conventional liquid-solid chromatography and liquid-liquid extraction in process modeling and industrial acceptance. This review aims to expose a broader audience to this high-potential separation technique by presenting the wide variety of available operating modes and solvent systems as well as structured, model-based design approaches. Topics currently offering opportunities for further investigation are also addressed.
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Affiliation(s)
- Raena Morley
- Biothermodynamics, TUM School of Life Sciences Weihenstephan, Technical University of Munich, 85354 Freising, Germany; ,
| | - Mirjana Minceva
- Biothermodynamics, TUM School of Life Sciences Weihenstephan, Technical University of Munich, 85354 Freising, Germany; ,
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Glucosinolates: Natural Occurrence, Biosynthesis, Accessibility, Isolation, Structures, and Biological Activities. Molecules 2020; 25:molecules25194537. [PMID: 33022970 PMCID: PMC7582585 DOI: 10.3390/molecules25194537] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/28/2020] [Accepted: 09/28/2020] [Indexed: 12/13/2022] Open
Abstract
Glucosinolates (GSLs) are secondary plant metabolites abundantly found in plant order Brassicales. GSLs are constituted by an S-β-d-glucopyrano unit anomerically connected to O-sulfated (Z)-thiohydroximate moiety. The side-chain of the O-sulfate thiohydroximate moiety, which is derived from a different amino acid, contributes to the diversity of natural GSL, with more than 130 structures identified and validated to this day. Both the structural diversity of GSL and their biological implication in plants have been biochemically studied. Although chemical syntheses of GSL have been devised to give access to these secondary metabolites, direct extraction from biomass remains the conventional method to isolate natural GSL. While intact GSLs are biologically inactive, various products, including isothiocyanates, nitriles, epithionitriles, and cyanides obtained through their hydrolysis of GSLs, exhibit many different biological activities, among which several therapeutic benefits have been suggested. This article reviews natural occurrence, accessibility via chemical, synthetic biochemical pathways of GSL, and the current methodology of extraction, purification, and characterization. Structural information, including the most recent classification of GSL, and their stability and storage conditions will also be discussed. The biological perspective will also be explored to demonstrate the importance of these prominent metabolites.
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Ito Y. Two-phase Motion in Hydrodynamic Counter-current Chromatography. CURRENT CHROMATOGRAPHY 2020; 7:76-81. [PMID: 34504762 PMCID: PMC8388067 DOI: 10.2174/2213240606666190912161221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/16/2019] [Accepted: 09/02/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Motion of the two mutually immiscible liquids in hydrodynamic countercurrent chromatographic systems is speculated based on the observation of their behavior in a closed coiled tube rotating in unit gravity. MATERIALS AND METHODS The experiment revealed an up and down pattern of four stages of two-phase volume ratio occupied at the head end of the coil according to the rotation speed. These two-phase behaviors are comprehensively explained on the bases of interplay between the unit gravity and centrifugal force generated by rotation of the coil. This theory is successfully extended to explain the two-phase behavior in a coil undergoing the type-I and type-J planetary motions. RESULTS AND DISCUSSION The type-I planetary motion produces the centrifugal force distribution similar to that of slowly rotating coil in unit gravity (Stage I), where both phases competitively move toward the head of the coil. In contrast, the type-J planetary motion displays complex distribution patterns of centrifugal force according to the location of the coil on the holder hence the two-phase motion varies with the ß values. When ß is 0.5 - 0.75, the force pattern simulates that of the rotating coil in unit gravity at 120 rpm (Stage III) where the lighter phase moves toward the head leaving the heavier phase behind. CONCLUSION This clearly demonstrates the importance of the proper choice of ß values in high-speed countercurrent chromatography utilizing the type-J planetary motion.
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Affiliation(s)
- Yoichiro Ito
- Laboratory of Bioseparation Technology, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, Bldg. 10, Room 5D18, 10 Center Drive, Bethesda, MD, 20892, USA
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Evaluation of Inter-Apparatus Separation Method Transferability in Countercurrent Chromatography and Centrifugal Partition Chromatography. SEPARATIONS 2019. [DOI: 10.3390/separations6030036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In the countercurrent chromatography and centrifugal partition chromatography, separation method transfer and scale-up is often described as an easy and straightforward procedure. Separation methods are usually developed on lab scale columns and subsequently transferred using linear scale-up factors to semi-preparative or preparative columns of the same column design. However, the separation methods described in the literature have been developed on various columns of different design and size. This is accompanied by differences in the separation behavior of the columns and therefore makes separation method transfer difficult. In the current study, the separation performances of different columns were evaluated and compared. Linear correlations of stationary phase retention and column efficiency as a function of flow rate were found to be applicable for the calculation of separation resolution in the typical operating range of each column. In this context, a two-point short-cut approach for a fast column characterization is recommended. This allows a quick prediction of the separation method transferability between columns, which saves experimental time and effort. In the current study, the transferability between five different columns from lab scale countercurrent chromatography (CCC) (18 mL) to semi-preparative centrifugal partition chromatography (CPCs) (250 mL) with different cell numbers and design is investigated.
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Malca Garcia GR, Friesen JB, Liu Y, Nikolić D, Lankin DC, McAlpine JB, Chen SN, Pauli GF. Preparation of DESIGNER extracts of red clover (Trifolium pratense L.) by centrifugal partition chromatography. J Chromatogr A 2019; 1605:360277. [PMID: 31307793 DOI: 10.1016/j.chroma.2019.05.057] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/23/2019] [Accepted: 05/28/2019] [Indexed: 01/04/2023]
Abstract
Starting with an isoflavone-rich red clover extract (RCE), this study expands on the DESIGNER approach to Deplete and Enrich Select Ingredients to Generate Normalized Extract Resources using countercurrent separation (CCS) methodology. A hydrostatic CCS (also known as centrifugal partition chromatography, CPC) technique was used to enrich and deplete selected bioactive isoflavones of RCE extracts. In order to efficiently prepare large enough DESIGNER extracts from RCE for biological testing including in vivo assays, it was necessary to choose a balance between resolution and a loading capacity of at least 1 g per separation for the selected solvent system (SS). Adding 3 mL of DMSO to the sample containing equal amounts of upper and lower phases of hexanes-ethyl acetate-methanol-water (HEMWat 5.5/4.5/5/5, v/v) allowed 1 g of RCE to be dissolved in the sample without disrupting the chromatographic resolution of the target isoflavones. CPC experiments using other solubility modifiers, acetone and acetonitrile indicated that these modifiers increase solubility significantly, even better than DMSO, but the separation of target compounds was sufficiently disturbed to be unacceptable for producing the desired DESIGNER extracts. The preparation of DESIGNER extracts was achieved with two sequential CPC separations. The first produced a biochanin A enriched fraction (93.60% w/w) with only small amounts of other isoflavones: 2.30% w/w prunetin, 1.17% w/w formononetin, and 0.12% w/w irilone. Gravimetric investigations of this step demonstrated the high efficiency of CCS technology for full and unbiased sample recovery, confirmed experimentally to be 99.80%. A formononetin enriched fraction from this first separation was re-chromatographed on a more polar HEMWat (4/6/4/6, v/v) SS to produce a formononetin enriched DESIGNER fraction of 94.70% w/w purity. The presence of the minor (iso)flavonoids: 3.16% w/w pseudobaptigenin, 0.39% w/w kaempferol, and 0.31% w/w genistein was also monitored in these fractions. Chromatographic fractions, combined fractions, and DESIGNER extracts were analyzed with quantitative 1H NMR (qHNMR) spectroscopy which provided purity information, quantitation, and structural identification of the components.
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Affiliation(s)
- Gonzalo R Malca Garcia
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA
| | - J Brent Friesen
- Center for Natural Product Technologies (CENAPT), Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA; Physical Sciences Department, Rosary College of Arts and Sciences, Dominican University, 7900 W. Division, River Forest, IL 60305, USA
| | - Yang Liu
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA
| | - Dejan Nikolić
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA
| | - David C Lankin
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA
| | - James B McAlpine
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA
| | - Shao-Nong Chen
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA
| | - Guido F Pauli
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood St., Chicago, IL 60612, USA.
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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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Yi T, Zhu L, Zhu GY, Tang YN, Xu J, Fan JY, Zhao ZZ, Chen HB. HSCCC-based strategy for preparative separation of in vivo metabolites after administration of an herbal medicine: Saussurea laniceps, a case study. Sci Rep 2016; 6:33036. [PMID: 27618988 PMCID: PMC5020495 DOI: 10.1038/srep33036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 08/16/2016] [Indexed: 12/28/2022] Open
Abstract
This paper reports a novel strategy based on high-speed counter-current chromatography (HSCCC) technique to separate in vivo metabolites from refined extract of urine after administration of an herbal medicine. Saussurea laniceps (SL) was chosen as a model herbal medicine to be used to test the feasibility of our proposed strategy. This strategy succeeded in the case of separating four in vivo metabolites of SL from the urine of rats. Briefly, after oral administration of SL extract to three rats for ten days (2.0 g/kg/d), 269.1 mg of umbelliferone glucuronide (M1, purity, 92.5%), 432.5 mg of scopoletin glucuronide (M2, purity, 93.2%), 221.4 mg of scopoletin glucuronide (M3, purity, 92.9%) and 319.0 mg of scopoletin glucuronide (M4, purity, 90.4%) were separated from 420 mL of the rat urine by HSCCC using a two-phase solvent system composed of methyl tert-butyl ether-n-butanol-acetonitrile-water (MTBE-n-BuOH-ACN-H2O) at a volume ratio of 10:30:11:49. The chemical structures of the four metabolites, M1 to M4, were confirmed by MS and (1)H, (13)C NMR. As far as we know, this is the first report of the successful separation of in vivo metabolites by HSCCC after administration of an herbal medicine.
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Affiliation(s)
- Tao Yi
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
- Institute of Research and Continuing Education (Shenzhen), Hong Kong Baptist University, Shenzhen, China
| | - Lin Zhu
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
| | - Guo-Yuan Zhu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macau Special Administrative Region, China
| | - Yi-Na Tang
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
- Institute of Research and Continuing Education (Shenzhen), Hong Kong Baptist University, Shenzhen, China
| | - Jun Xu
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
- Institute of Research and Continuing Education (Shenzhen), Hong Kong Baptist University, Shenzhen, China
| | - Jia-Yi Fan
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
| | - Zhong-Zhen Zhao
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
| | - Hu-Biao Chen
- School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
- Institute of Research and Continuing Education (Shenzhen), Hong Kong Baptist University, Shenzhen, China
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Tang MSY, Ng EP, Juan JC, Ooi CW, Ling TC, Woon KL, Show PL. Metallic and semiconducting carbon nanotubes separation using an aqueous two-phase separation technique: a review. NANOTECHNOLOGY 2016; 27:332002. [PMID: 27396920 DOI: 10.1088/0957-4484/27/33/332002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
It is known that carbon nanotubes show desirable physical and chemical properties with a wide array of potential applications. Nonetheless, their potential has been hampered by the difficulties in acquiring high purity, chiral-specific tubes. Considerable advancement has been made in terms of the purification of carbon nanotubes, for instance chemical oxidation, physical separation, and myriad combinations of physical and chemical methods. The aqueous two-phase separation technique has recently been demonstrated to be able to sort carbon nanotubes based on their chirality. The technique requires low cost polymers and salt, and is able to sort the tubes based on their diameter as well as metallicity. In this review, we aim to provide a review that could stimulate innovative thought on the progress of a carbon nanotubes sorting method using the aqueous two-phase separation method, and present possible future work and an outlook that could enhance the methodology.
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Affiliation(s)
- Malcolm S Y Tang
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia. Low Dimensional Material Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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15
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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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16
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Liu Y, Garzon J, Friesen JB, Zhang Y, McAlpine JB, Lankin DC, Chen SN, Pauli GF. Countercurrent assisted quantitative recovery of metabolites from plant-associated natural deep eutectic solvents. Fitoterapia 2016; 112:30-37. [PMID: 27118320 DOI: 10.1016/j.fitote.2016.04.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/20/2016] [Accepted: 04/22/2016] [Indexed: 10/21/2022]
Abstract
NAtural Deep Eutectic Solvents (NADES) are chemically simple but physiologically important plant constituents that exhibit unique solubilizing properties of other metabolites, including bioactive constituents. The high polarity of NADES introduces a challenge in the ability of conventional solid-support based chromatography to recover potential bioactive metabolites. This complicates the systematic explanation of the NADES' functions in botanical extracts. The present study utilizes countercurrent separation (CCS) methodology to overcome the recovery challenge. To demonstrate its feasibility, Glucose-Choline chloride-Water (GCWat, 2:5:5, mole/mole) served as a model NADES, and four widely used marker flavonoids with different polarities (rutin, quercetin, kaempferol, and daidzein) were chosen as model target analytes. In order to prepare GCWat with high consistency, a water drying study was performed. The unique capabilities of the recently introduced CherryOne system, offering volumetric phase metering, were used to monitor the CCS operations. The collected fractions were analyzed using UHPLC and NMR/quantitative NMR. CCS was able to recover the analytes from the NADES matrix with quantitative recoveries of 95.7%, 94.6%, 97.0%, and 96.7% for rutin, quercetin, kaempferol, and daidzein respectively. The CCS strategy enables recovery of target metabolites from NADES-containing crude extracts as well as from other chemical mixtures, and moreover offers a means of using NADES as environmentally friendly extraction solvents.
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Affiliation(s)
- Yang Liu
- UIC/NIH Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Jahir Garzon
- UIC/NIH Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - J Brent Friesen
- UIC/NIH Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Physical Sciences Department, Rosary College of Arts and Sciences, Dominican University, River Forest, IL 60305, USA
| | - Yu Zhang
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - James B McAlpine
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - David C Lankin
- UIC/NIH Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Shao-Nong Chen
- UIC/NIH Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Guido F Pauli
- UIC/NIH Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.,Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
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17
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Liu Y, Friesen JB, Klein LL, McAlpine JB, Lankin DC, Pauli GF, Chen SN. The Generally Useful Estimate of Solvent Systems (GUESS) method enables the rapid purification of methylpyridoxine regioisomers by countercurrent chromatography. J Chromatogr A 2015; 1426:248-51. [PMID: 26680272 DOI: 10.1016/j.chroma.2015.11.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 11/05/2015] [Accepted: 11/10/2015] [Indexed: 11/19/2022]
Abstract
The TLC-based Generally Useful Estimate of Solvent Systems (GUESS) method was employed for countercurrent chromatography solvent system selection, in order to separate the three synthetic isomers: 3-O-methylpyridoxine, 4'-O-methylpyridoxine (ginkgotoxin), and 5'-O-methylpyridoxine. The Rf values of the three isomers indicated that ChMWat+2 (chloroform-methanol-water 10:5:5, v/v/v) was appropriate for the countercurrent separation. The isomer separation was highly selective and demonstrated that the TLC-based GUESS method can accelerate solvent system selection for countercurrent separation. Accordingly, the study re-emphasizes the practicality of TLC as a tool to facilitate the rapid development of new countercurrent and centrifugal partition chromatography methods for this solvent system. Purity and structure characterization of all samples was performed by quantitative (1)H NMR.
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Affiliation(s)
- Yang Liu
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - J Brent Friesen
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA; Physical Sciences Department, Rosary College of Arts and Sciences, Dominican University, River Forest, IL 60305, USA.
| | - Larry L Klein
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - James B McAlpine
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA; Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - David C Lankin
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Guido F Pauli
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA; Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Shao-Nong Chen
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.
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18
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Ma X, Ito Y. New analytical spiral tube assembly for separation of proteins by counter-current chromatography. J Chromatogr A 2015; 1405:193-6. [PMID: 26074099 PMCID: PMC4490045 DOI: 10.1016/j.chroma.2015.05.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 05/21/2015] [Accepted: 05/21/2015] [Indexed: 11/26/2022]
Abstract
A new spiral column assembly for analytical separation by counter-current chromatography is described. The column is made from a plastic spiral tube support which has 12 interwoven spiral grooves. The PTFE tubing of 1.6mm ID was first flattened by extruding through a narrow slit and inserted into the grooves to make 5 spiral layers with about 60ml capacity. The performance of the spiral column assembly was tested with separation of three stable protein samples including cytochrome C, myoglobin and lysozyme in a polymer phase system composed of polyethylene glycol 1000 and dibasic potassium phosphate each at 12.5% (w/w) in water. At 2ml/min, three protein samples were well resolved in 1h. The separation time may be further shortened by application of higher revolution speed and flow rate by improving the strength of the spiral tube support in the future.
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Affiliation(s)
- Xiaofeng Ma
- Laboratory of Bioseparation Technology, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, 10 Center Drive, Bldg. 10, Rm 8N230, Bethesda, MD 20892, USA; College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Yoichiro Ito
- Laboratory of Bioseparation Technology, Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of Health, 10 Center Drive, Bldg. 10, Rm 8N230, Bethesda, MD 20892, USA.
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19
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Li Y, Cai F, Zhang M, Zhang H, Wang Y, Hu P. Two-stage fractionation of polar alkaloids from Rhizoma coptidis by countercurrent chromatography considering the strategy of reactive extraction. J Chromatogr A 2015; 1378:58-64. [DOI: 10.1016/j.chroma.2014.12.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 12/01/2014] [Accepted: 12/05/2014] [Indexed: 01/11/2023]
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20
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Zhang M, Khripin CY, Fagan JA, McPhie P, Ito Y, Zheng M. Single-step total fractionation of single-wall carbon nanotubes by countercurrent chromatography. Anal Chem 2014; 86:3980-4. [PMID: 24673411 PMCID: PMC4037701 DOI: 10.1021/ac5003189] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Development of simple processes to fractionate synthetic mixtures of single-wall carbon nanotubes (SWCNTs) into individual species is crucial to many applications. Existing methods for single-chirality SWCNT purification are cumbersome, often requiring multiple steps and different conditions for different species. Here, we report a method to achieve total fractionation of a synthetic SWCNT mixture by countercurrent chromatography, resulting in purification of many single-chirality SWCNT species in a single run. This method is based on a tunable partition of sodium deoxycholate dispersed SWCNTs in a polyethylene glycol/dextran aqueous two-phase system. By running the mobile phase with 0.02% of sodium deoxycholate and a gradient of sodium dodecyl sulfate from 0.1% to 0.7% (w/w), we observe clear diameter-dependent elution, with ∼ 90% total recovery. Among all the fractions collected, a number of them are enriched in single-chirality (9,4), (7,5), (7,6), (8,3), (6,5) species, while most of the remaining ones contain no more than 2-3 major species. We also observe strong (n,m)-dependent elution peak width due to the enantiomer-resolved partition. These results demonstrate countercurrent chromatography (CCC) as an effective way to obtain high purity (n, m) species, and suggest the potential of CCC as an analytical tool for chirality distribution mapping of synthetic SWCNT mixtures.
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Affiliation(s)
- Min Zhang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
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21
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Liu Y, Chen SN, McAlpine JB, Klein LL, Friesen JB, Lankin DC, Pauli GF. Quantification of a botanical negative marker without an identical standard: ginkgotoxin in Ginkgo biloba. JOURNAL OF NATURAL PRODUCTS 2014; 77:611-7. [PMID: 24432981 DOI: 10.1021/np400874z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
A new strategy for the analysis of natural products uses a combination of quantitative (1)H NMR (qHNMR) and adsorbent-free countercurrent separation (CS) methodology to establish a quantification method for ginkgotoxin (4'-O-methylpyridoxine) in Ginkgo biloba preparations. The target analyte was concentrated in a one-step CS process using the ChMWat +2 solvent system (CHCl3-MeOH-H2O, 10:5:5) and subsequently assayed by qHNMR. While commercial G. biloba seeds contained 59 μg of ginkgotoxin per seed, the compound was below the limit of detection (9 ppm) in a typical leaf extract. Due to the enrichment potential and loss-free operation of CS, the combination of CS and qHNMR is a generally suitable approach for threshold assays aimed at quantifying target compounds such as botanical negative markers at the low ppm level. As the proof of principle is demonstrated for relatively small CS capacities (20 mL, 1:40 loading) and modest NMR sensitivity (n = 16, 400 MHz, 5 mm RT probe), the approach can be adapted to quantification at the ppb level. The procedure enables the quantification of a botanical negative marker in the absence of identical reference material, which otherwise is a prerequisite for LC-based assays.
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Affiliation(s)
- Yang Liu
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago , Chicago, Illinois 60612, United States
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22
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Li Y, Wang N, Zhang M, Ito Y, Zhang H, Wang Y, Guo X, Hu P. Development of a method to extract and purify target compounds from medicinal plants in a single step: online hyphenation of expanded bed adsorption chromatography and countercurrent chromatography. Anal Chem 2014; 86:3373-9. [PMID: 24588208 DOI: 10.1021/ac4035955] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pure compounds extracted and purified from natural sources are crucial to lead discovery and drug screening. This study presents a novel two-dimensional hyphenation of expanded bed adsorption chromatography (EBAC) and high-speed countercurrent chromatography (HSCCC) for extraction and purification of target compounds from medicinal plants in a single step. The EBAC and HSCCC were hyphenated via a six-port injection valve as an interface. Fractionation of ingredients of Salvia miltiorrhiza and Rhizoma coptidis was performed on the hyphenated system to verify its efficacy. Two compounds were harvested from Salvia miltiorrhiza, one was 52.9 mg of salvianolic acid B with an over 95% purity and the other was 2.1 mg of rosmarinic acid with a 74% purity. Another two components were purified from Rhizoma coptidis, one was 4.6 mg of coptisine with a 98% purity and one was 4.1 mg of berberine with a 82% purity. The processing time was nearly 50% that of the multistep method. The results indicate that the present method is a rapid and green way to harvest targets from medicinal plants in a single step.
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Affiliation(s)
- Yang Li
- School of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai 200237, China
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23
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Ito Y, Knight M, Finn TM. Spiral countercurrent chromatography. J Chromatogr Sci 2013; 51:726-38. [PMID: 23833207 PMCID: PMC3702229 DOI: 10.1093/chromsci/bmt058] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 03/12/2013] [Indexed: 11/14/2022]
Abstract
For many years, high-speed countercurrent chromatography conducted in open tubing coils has been widely used for the separation of natural and synthetic compounds. In this method, the retention of the stationary phase is solely provided by the Archimedean screw effect by rotating the coiled column in the centrifugal force field. However, the system fails to retain enough of the stationary phase for polar solvent systems such as the aqueous-aqueous polymer phase systems. To address this problem, the geometry of the coiled channel was modified to a spiral configuration so that the system could utilize the radially acting centrifugal force. This successfully improved the retention of the stationary phase. Two different types of spiral columns were fabricated: the spiral disk assembly, made by stacking multiple plastic disks with single or four interwoven spiral channels connected in series, and the spiral tube assembly, made by inserting the tetrafluoroethylene tubing into a spiral frame (spiral tube support). The capabilities of these column assemblies were successfully demonstrated by separations of peptides and proteins with polar two-phase solvent systems whose stationary phases had not been well retained in the earlier multilayer coil separation column for high-speed countercurrent chromatography.
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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, Bldg.10, Room 8N230, 10 Center Drive, Bethesda, MD 20892, USA.
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Sutherland I, Ignatova S, Hewitson P, Janaway L, Wood P, Edwards N, Harris G, Guzlek H, Keay D, Freebairn K, Johns D, Douillet N, Thickitt C, Vilminot E, Mathews B. Scalable Technology for the Extraction of Pharmaceutics (STEP): The transition from academic knowhow to industrial reality. J Chromatogr A 2011; 1218:6114-21. [DOI: 10.1016/j.chroma.2011.01.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Accepted: 01/02/2011] [Indexed: 11/27/2022]
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25
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Wei Y, Du S, Ito Y. Enantioseparation of lomefloxacin hydrochloride by high-speed counter-current chromatography using sulfated-β-cyclodextrin as a chiral selector. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:2937-41. [PMID: 20837406 DOI: 10.1016/j.jchromb.2010.08.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Revised: 08/18/2010] [Accepted: 08/20/2010] [Indexed: 10/19/2022]
Abstract
Enantiomers of lomefloxacin hydrochloride were separated by high-speed counter-current chromatography (HSCCC) using sulfated-β-cyclodextrin as a chiral selector (CS). The separation was performed with a two-phase solvent system composed of ethyl acetate-methanol-water (10:1:10, v/v) containing CS at 0-60mmol/l in a head-to-tail elution mode, while obtained fractions were identified by polarimeter and spectropolarimeter. The results show that the concentration of the CS in the system strongly affects the peak resolution (Rs). As the concentration of CS increases, the Rs first increases reaching the maximum at 50mmol/l and then decreases. When the CS concentration is kept constant in the solvent systems, the Rs decreases as the concentration of the lomefloxacin hydrochloride increases. The overall results of our studies indicated that sulfated-β-cyclodextrin is very useful for the chiral separation by HSCCC.
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Affiliation(s)
- Yun Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, PR China.
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Yao Y, Cheng Z, Ye H, Xie Y, He J, Tang M, Shen T, Wang J, Zhou Y, Lu Z, Luo F, Chen L, Yu L, Yang JL, Peng A, Wei Y. Preparative isolation and purification of anti-tumor agent ansamitocin P-3 from fermentation broth of Actinosynnema pretiosum using high-performance counter-current chromatography. J Sep Sci 2010; 33:1331-7. [DOI: 10.1002/jssc.200900746] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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27
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Weisz A, Mazzola EP, Ito Y. Preparative separation of di- and trisulfonated components of Quinoline Yellow using affinity-ligand pH-zone-refining counter-current chromatography. J Chromatogr A 2009; 1216:4161-8. [PMID: 19281993 DOI: 10.1016/j.chroma.2009.02.064] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2008] [Revised: 02/19/2009] [Accepted: 02/20/2009] [Indexed: 11/25/2022]
Abstract
Four positionally isomeric 2-(2-quinolinyl)-1H-indene-1,3(2H)-dionedisulfonic acids (SA) and one triSA, components of the color additive Quinoline Yellow (QY, Color Index No. 47005), were isolated from the dye mixture by affinity-ligand pH-zone-refining counter-current chromatography (CCC) through complementary use of ion-exchange and ion-pair reagents as the ligand. The added ligands facilitated the partitioning of the very polar polysulfonated components into the organic stationary phase of the two-phase solvent systems that consisted of isoamyl alcohol-methyl tert-butyl ether-acetonitrile-water (3:5:1:7), (3:4:1:7) or (3:1:1:5). Thus, separation of a 5-g portion of QY using sulfuric acid as the retainer and dodecylamine as the ligand (an ion-exchange reagent, 20% in the stationary phase), resulted in 1.21g of 6',5-diSA and 1.69g of 6',8',5-triSA, both of over 99% purity. A minor component, 8',4-diSA, not previously reported was also obtained (4.8mg of over 94% purity) through a similar separation of a different batch of QY using hydrochloric acid as the retainer and 10% dodecylamine as the ligand in the stationary phase. Two components that co-eluted (0.55g) in the 5g separation were separated when trifluoroacetic acid was used as the retainer and tetrabutylammonium hydroxide (an ion-pair reagent) as the ligand. The separation resulted in 20.7mg of 6',4-diSA, not previously reported, and 111.8mg of 8',5-diSA, both of over 98% purity. The isolated compounds were characterized by high-resolution mass spectrometry and proton nuclear magnetic resonance with correlated spectroscopy assignments.
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Affiliation(s)
- Adrian Weisz
- Center for Food Safety and Applied Nutrition, US Food and Drug Administration, College Park, MD 20740, USA.
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Wang T, Jiang X, Yang L, Wu S. pH-gradient counter-current chromatography isolation of natural antioxidant chlorogenic acid from Lonicera japonica Thumb. using an upright coil planet centrifuge with three multi-layer coils connected in series. J Chromatogr A 2008; 1180:53-8. [DOI: 10.1016/j.chroma.2007.11.112] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2007] [Revised: 11/29/2007] [Accepted: 11/30/2007] [Indexed: 11/25/2022]
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Multi-channel counter-current chromatography for high-throughput fractionation of natural products for drug discovery. J Chromatogr A 2007; 1180:99-107. [PMID: 18166193 DOI: 10.1016/j.chroma.2007.12.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2007] [Revised: 12/07/2007] [Accepted: 12/10/2007] [Indexed: 10/22/2022]
Abstract
A multi-channel counter-current chromatography (CCC) method has been designed and fabricated for the high-throughput fractionation of natural products without complications sometimes encountered with other conventional chromatographic systems, such as irreversible adsorptive constituent losses and deactivation, tailing of solute peaks and contamination. It has multiple independent CCC channels and each channel connects independent separation column(s) by parallel flow tubes, and thus the multi-channel CCC apparatus can achieve simultaneously two or more independent chromatographic processes. Furthermore, a high-throughput CCC fractionation method for natural products has been developed by a combination of a new three-channel CCC apparatus and conventional parallel chromatographic devices including pumps, sample injectors, effluent detectors and collectors, and its performance has been displayed on the fractionation of ethyl acetate extracts of three natural materials Solidago canadensis, Suillus placidus, and Trichosanthes kirilowii, which are found to be potent cytotoxic to tumor cell lines in the course of screening the antitumor candidates. By combination of biological screening programs and preparative high-performance liquid chromatography (HPLC) purification, 22.8 mg 6 beta-angeloyloxykolavenic acid and 29.4 mg 6 beta-tigloyloxykolavenic acid for S. canadensis, 25.3mg suillin for S. placidus, and 6.8 mg 23,24-dihydrocucurbitacin B for T. Kirilowii as their major cytotoxic principles were isolated from each 1000 mg crude ethyl acetate extract. Their chemical structures were characterized by electrospray ionization mass spectrometry, one- and two-dimensional nuclear magnetic resonance. The overall results indicate the multi-channel CCC is very useful for high-throughput fractionation of natural products for drug discovery in spite of the solvent balancing requirement and the lower resolution of the shorter CCC columns.
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Shen CW, Yu T. Protein separation and enrichment by counter-current chromatography using reverse micelle solvent systems. J Chromatogr A 2007; 1151:164-8. [PMID: 17289061 DOI: 10.1016/j.chroma.2007.01.079] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2006] [Revised: 01/10/2007] [Accepted: 01/19/2007] [Indexed: 11/20/2022]
Abstract
A protein mixture consisting of myoglobin, cytochrome c, and lysozyme was separated by high-speed counter-current chromatography using a two-phase aqueous/reverse micelle-containing organic solvent system. About 50% stationary phase retention ratio was obtained in most chromatographic experiments. Separations were manipulated mainly by pH gradients that controlled the electrostatic interactions between the protein molecules and reverse micelles. Separations were further improved by incorporating an ionic strength gradient along with the pH gradient. Control of ionic strength in the aqueous solution helped fine-tune protein partitioning between the stationary and mobile phases. Although non-specific protein interactions affected baseline resolution, recovery of cytochrome c and lysozyme reached 90% and 82%. Furthermore, concentration or enrichment of these two proteins was achieved from a large-volume sample load. This technique can potentially be employed in the recovery and enrichment of proteins from large-volume aqueous solutions.
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Affiliation(s)
- Ching-Wei Shen
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30050, Taiwan
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Zhang TY, Pannell LK, Cai DG, Ito Y. Separation of Alkaloids Extracted from Stephania Tetranda S. Moore by Analytical High-Speed Countercurrent Chromatography. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/01483918808076728] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Wu S, Tai Y, Pan Y, Sun C. Effect of gravitational force on type-J counter-current chromatography by mathematical analysis. J Chromatogr A 2006; 1103:243-7. [PMID: 16310201 DOI: 10.1016/j.chroma.2005.11.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2004] [Revised: 10/28/2005] [Accepted: 11/09/2005] [Indexed: 11/25/2022]
Abstract
The gravitational force exerts an important effect on the counter-current chromatography (CCC) and has been used to retain the stationary phase and improve the efficiency in the various CCC separations. This paper deals with the effect of gravitational force on type-J CCC, one of the most popular CCC methods by the mathematical analysis for the first time. The theoretical analyses reveal a close relationship between the effect of gravitational force, the placed orientation of type-J CCC apparatus, and the revolutional speed. Two placed orientations are more suitable for preparative CCC separation: one is common horizontal, and the other upright. Thus, there are three optimum conditions for type-J CCC separation, the first using horizontal apparatus at very low revolutional speed around 10rpm in the gravitational filed, the second by use of upright apparatus at moderate revolutional speed around 100rpm in the three-dimensional complex force field composed of centrifugal and orthogonal gravitational force, and the third employing the apparatus placed at any orientation including horizontal and upright CCC apparatus at high revolutional speed above 300rpm in the centrifugal force field. Therefore, we should consider the effect of gravitation force on CCC at the selection of proper operational conditions according to properties of two immiscible phases, the desired revolutional speed and the parameters of apparatus in order to utilize efficiently the effect of gravitational force. These analyses and results will benefit to improve the efficiency of CCC separation, especially large-scale industrial preparation.
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Affiliation(s)
- Shihua Wu
- Zhejiang University, College of Life Sciences, Hangzhou 310058, China
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33
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Metzler DE, Metzler CM, Sauke DJ. Determining Structures and Analyzing Cells. Biochemistry 2001. [DOI: 10.1016/b978-012492543-4/50006-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Yang F, Ou Q, Yu W. Semi-Preparative Separation of Taraxeryl-Acetate and Coumarins fromArtemisia DalailamaeKraschen by High-Speed Countercurrent Chromatography. ACTA ACUST UNITED AC 1995. [DOI: 10.1080/10826079508009247] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Zhang TY, Xiao R, Xiao ZY, Pannell LK, Ito Y. Rapid separation of flavonoids by analytical high-speed counter-current chromatography. J Chromatogr A 1988; 445:199-206. [PMID: 3215971 DOI: 10.1016/s0021-9673(01)84521-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A commercial model of the analytical high-speed counter-current chromatography instrument was used for separation of flavonoids from a crude ethanol extract of dried fruits of sea buckthorn (Hippophae rhamnoides). Using a two-phase solvent system of chloroform-methanol-water (4:3:2), a five-fold increase in flow-rate of the mobile phase from 60 to 300 ml/h resulted in a rapid separation of five components in less than 15 min without significant loss in peak resolution. Major flavonoid component, isorhamnetin, was identified in its pure state by mass spectrometric analysis.
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Affiliation(s)
- T Y Zhang
- Laboratory of Technical Development, National Heart, Lung, and Blood Institute, Bethesda, MD 20892
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Zhang TY, Pannell LK, Pu QL, Cai DG, Ito Y. Separation of hydroxyanthraquinone derivatives extracted from rheum with analytical high-speed counter-current chromatography. J Chromatogr A 1988; 442:455-8. [PMID: 3417834 DOI: 10.1016/s0021-9673(00)94500-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- T Y Zhang
- Laboratory of Technical Development, National Heart, Lung, and Blood Institute, Bethesda, MD 20892
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37
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Zhang TY, Cai DG, Ito Y. Separations of flavonoids and alkaloids in medicinal herbs by high-speed counter-current chromatography. J Chromatogr A 1988; 435:159-66. [PMID: 3350890 DOI: 10.1016/s0021-9673(01)82171-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Counter-current chromatography is a new liquid-liquid partition chromatography without using solid support. Recently, the technique has been remarkably improved in both partition efficiency and separation time. In this paper the capability of this high-speed counter-current chromatography was demonstrated on separation of two sets of samples obtained from medicinal herbs: a synthetic mixture of 3'-hydroxygenkwanin, luteolin and apigenin was separated on a two-phase solvent system composed of chloroform-methanol-water (4:3:2, v/v/v) and a crude ethanol extract from Anisodus tangulicus (Maxin) Pasch on chloroform-0.07 M sodium phosphate (pH 6.4) (1:1, v/v). In the light of chromatograms obtained from these samples, advantages of high-speed counter-current chromatography over other chromatographic methods were discussed in terms of partition efficiency, peak resolution, separation time, sample loading capacity, etc.
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Affiliation(s)
- T Y Zhang
- Laboratory of Technical Development, National Heart, Lung, and Blood Institute, Bethesda, MD 20892
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