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Kostanyan AE, Voshkin AA. Modeling of analytical, preparative and industrial scale counter-current chromatography separations. J Chromatogr A 2024; 1713:464534. [PMID: 38041973 DOI: 10.1016/j.chroma.2023.464534] [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: 08/02/2023] [Revised: 11/20/2023] [Accepted: 11/25/2023] [Indexed: 12/04/2023]
Abstract
Analytical, preparative and industrial scale counter-current chromatography (CCC) processes differ in the volumes of the loaded solution of components to be separated and in the design of the equipment. Preliminary mathematical modeling is necessary for selection of the optimal design and operation mode of these CCC separations. This study aims to compare simulations of CCC separations at different scales, using an exact description based on the model of equilibrium cells and a much simpler approximate solution based on the Gaussian distribution. Equations for modeling CCC separations of different scales and examples of simulation these separations are presented. It is shown that the discrepancy between the two simulations increases with an increase in the volume of the loaded solution of the components and a decrease in the number of equilibrium cells of a CCC device. In analytical and preparative separations, which are based on complex centrifugal devices, and relatively small sample volumes are injected, approximate equations can be used to simulate various options of CCC separation. In industrial-scale CCC separations, large volumes of the solution of components may be loaded, and as we have proposed previously, these separations can be based on a cascade of mixer-settler extractors. In this case, a more accurate mathematical description based on the cell model equations should be used for modeling.
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Affiliation(s)
- Artak E Kostanyan
- Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Leninsky a Prospekt 31, Moscow 119991, Russia.
| | - Andrey A Voshkin
- Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Leninsky a Prospekt 31, Moscow 119991, Russia
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2
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Kiene M, Zaremba M, Fellensiek H, Januschewski E, Juadjur A, Jerz G, Winterhalter P. In Silico-Assisted Isolation of trans-Resveratrol and trans-ε-Viniferin from Grapevine Canes and Their Sustainable Extraction Using Natural Deep Eutectic Solvents (NADES). Foods 2023; 12:4184. [PMID: 38002241 PMCID: PMC10670976 DOI: 10.3390/foods12224184] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
Grapevine canes are an important source of bioactive compounds, such as stilbenoids. This study aimed to evaluate an in silico method, based on the Conductor-like Screening Model for Real Solvents (COSMO-RS) to isolate stilbenoids from a grapevine cane extract by offline heart-cut high-performance countercurrent chromatography (HPCCC). For the following extraction of resveratrol and ε-viniferin from grapevine canes, natural deep eutectic solvents (NADES) were used as an environmentally friendly alternative to the traditionally used organic solvents. In order to evaluate a variety of combinations of hydrogen bond acceptors (HBAs) and hydrogen bond donors (HBDs) for the targeted extraction of stilbenoids, COSMO-RS was applied. In particular, ultrasonic-assisted extraction using a solvent mixture of choline chloride/1,2-propanediol leads to higher extraction yields of resveratrol and ε-viniferin. COSMO-RS calculations for NADES extraction combined with HPCCC biphasic solvent system calculations are a powerful combination for the sustainable extraction, recovery, and isolation of natural products. This in silico-supported workflow enables the reduction of preliminary experimental tests required for the extraction and isolation of natural compounds.
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Affiliation(s)
- Mats Kiene
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstraße 20, 38106 Braunschweig, Germany; (M.K.); (E.J.); (G.J.)
| | - Malte Zaremba
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstraße 20, 38106 Braunschweig, Germany; (M.K.); (E.J.); (G.J.)
| | - Hendrik Fellensiek
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstraße 20, 38106 Braunschweig, Germany; (M.K.); (E.J.); (G.J.)
| | - Edwin Januschewski
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstraße 20, 38106 Braunschweig, Germany; (M.K.); (E.J.); (G.J.)
- German Institute of Food Technologies, Chemical Analytics, Prof.-von-Klitzing-Straße 7, 49610 Quakenbrück, Germany;
| | - Andreas Juadjur
- German Institute of Food Technologies, Chemical Analytics, Prof.-von-Klitzing-Straße 7, 49610 Quakenbrück, Germany;
| | - Gerold Jerz
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstraße 20, 38106 Braunschweig, Germany; (M.K.); (E.J.); (G.J.)
| | - Peter Winterhalter
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstraße 20, 38106 Braunschweig, Germany; (M.K.); (E.J.); (G.J.)
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Kiene M, Blum S, Jerz G, Winterhalter P. A Comparison between High-Performance Countercurrent Chromatography and Fast-Centrifugal Partition Chromatography for a One-Step Isolation of Flavonoids from Peanut Hulls Supported by a Conductor like Screening Model for Real Solvents. Molecules 2023; 28:5111. [PMID: 37446775 DOI: 10.3390/molecules28135111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/22/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
Peanut hulls (Arachis hypogaea, Leguminosae), which are a side stream of global peanut processing, are rich in bioactive flavonoids such as luteolin, eriodictyol, and 5,7-dihydroxychromone. This study aimed to isolate these flavonoid derivatives by liquid-liquid chromatography with as few steps as possible. To this end, luteolin, eriodictyol and 5,7-dihydroxychromone were isolated from peanut hulls using two different techniques, high-performance countercurrent chromatography (HPCCC) and fast-centrifugal partition chromatography (FCPC). The suitability of the biphasic solvent system composed of n-hexane/ethyl acetate/methanol/water (1.0/1.0/1.0/1.5; v/v/v/v) was determined by the Conductor like Screening Model for Real Solvents (COSMO-RS), which allowed the partition ratio KD-values of the three main flavonoids to be calculated. After a one-step HPCCC separation of ~1000 mg of an ethanolic peanut hull extract, 15 mg of luteolin and 8 mg of eriodictyol were isolated with purities over 96%. Furthermore, 3 mg of 5,7-dihydroxychromone could be isolated after purification by semi-preparative reversed-phase liquid chromatography (semi-prep. HPLC) in purity of over 99%. The compounds were identified by electrospray ionization mass spectrometry (ESI-MS) and nuclear magnetic resonance spectroscopy (NMR).
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Affiliation(s)
- Mats Kiene
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstrasse 20, 38106 Brauschweig, Germany
| | - Svenja Blum
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstrasse 20, 38106 Brauschweig, Germany
| | - Gerold Jerz
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstrasse 20, 38106 Brauschweig, Germany
| | - Peter Winterhalter
- Institute of Food Chemistry, Technische Universität Braunschweig, Schleinitzstrasse 20, 38106 Brauschweig, Germany
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Jiang X, Yang X, Chen Y, Yan X, Liu H, Lu F, Li D. GUESS - A simple approach to accelerate optimization countercurrent separation. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1215:123573. [PMID: 36603474 DOI: 10.1016/j.jchromb.2022.123573] [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: 10/14/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 12/25/2022]
Abstract
The generally useful estimate of solvent systems (GUESS) method, which is based on thin layer chromatography, is a simple and practical method for selecting solvent systems for countercurrent chromatography (CCC). However, it is rarely used for complex samples derived from natural products. In this study, GUESS was used for CCC solvent system selection and polarity-adjusted CCC separations of several fractions, which were obtained from a silica gel column containing complex compositions with a broad polarity from Salvia bowleyana Dunn. The GUESS method was performed on five fractions based on solvent systems in the n-hexane-ethyl acetate-methanol-water (HEMWat) family. Based on the GUESS results, the optimal solvent systems were selected for CCC separation. Twelve diterpenoids were obtained from the five silica gel column fractions of S. bowleyana Dunn using elution-extrusion countercurrent chromatography (EECCC). These demonstrate that GUESS guidance and the polarity adjustment of the solvent system accelerate the optimization of CCC separation conditions and simplify the process of accommodating a broad polarity of components in complicated mixture fractions. We therefore confirmed the feasibility and advantage of the GUESS method for complex natural chemical component separations.
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Affiliation(s)
- Xiaohua Jiang
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
| | - Xuerong Yang
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
| | - Yueyuan Chen
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
| | - Xiaojie Yan
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China
| | - HongWei Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, No. 1 Beichenxi Road, Chaoyang District, Beijing 100101, China
| | - Fenglai Lu
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China.
| | - Dianpeng Li
- Guangxi Key Laboratory of Plant Functional Phytochemicals and Sustainable Utilization, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, China.
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Target-Guided Isolation of Progenitors of 1,1,6-Trimethyl-1,2-dihydronaphthalene (TDN) from Riesling Wine by High-Performance Countercurrent Chromatography. Molecules 2022; 27:molecules27175378. [PMID: 36080146 PMCID: PMC9458034 DOI: 10.3390/molecules27175378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/10/2022] [Accepted: 08/19/2022] [Indexed: 12/03/2022] Open
Abstract
High-performance countercurrent chromatography (HPCCC) was used for the target-guided isolation of precursors of 1,1,6-trimethyl-1,2-dihydronaphthalene (TDN) from Riesling wine. In separated HPCCC fractions of an Amberlite® XAD®-2 extract obtained from a German Riesling, TDN-generating fractions were identified by the acid-catalyzed hydrolysis of the progenitors at pH 3.0 and subsequent HS-GC-MS/MS analysis. The presence of multiple TDN-generating precursors in Riesling wine could be confirmed. From polar HPCCC fractions (11–13 and 14–16), 3,4-dihydroxy-7,8-dihydro-β-ionone 3-O-rutinoside and 3,4-dihydroxy-7,8-dihydro-β-ionone 3-O-β-d-glucopyranoside were isolated as major TDN-precursors at a sufficient amount for structure elucidation by NMR spectroscopic studies. In the medium polar HPCCC factions (27–35), enzymatic hydrolysis liberated the aglycones 3-hydroxy-β-ionone and 3-hydroxy-TDN in minor amounts. In further less polar TDN-generation fractions (36–44 and 45–50), glycosidic progenitors were absent; instead, a minor TDN formation most likely from non-conjugated constituents was observed.
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Chen D, Jin Y, Hu D, Ye J, Lu Y, Dai Z. One-Step Preparative Separation of Fucoxanthin from Three Edible Brown Algae by Elution-Extrusion Countercurrent Chromatography. Mar Drugs 2022; 20:257. [PMID: 35447930 PMCID: PMC9024483 DOI: 10.3390/md20040257] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/01/2022] [Accepted: 04/01/2022] [Indexed: 02/07/2023] Open
Abstract
A method for batch preparation of fucoxanthin from brown algae was established, which possessed the advantages of high yield and high purity. The ultrasonic-assisted extraction method was used to obtain a crude extract from Sargassum fusiforme as the separation sample. Then the crude extract was separated by elution-extrusion countercurrent chromatography. The optimum preparation conditions of fucoxanthin were determined as follows: n-hexane-ethanol-water (20:9:11, v:v:v) as a two-phase solvent system, the mobile phase flow rate was 5 mL min-1, the revolution speed was 800 r min-1, the loading capacity was 60 mg 10 mL-1 and the temperature was 25 °C. By this method, 12.8 mg fucoxanthin with a purity of 94.72% was obtained from the crude extract of Sargassum fusiforme. In addition, when the loading capacity was 50 mg 10 mL-1, the purity of fucoxanthin reached 96.01%. Two types of by-products, chlorophyll and pheophytin, could also be obtained during the process of separation. This optimal method was further applied to separate fucoxanthin from Laminaria japonica and Undaria pinnatifida, and 6.0 mg and 9.7 mg fucoxanthin with a purity of 96.24% and 92.62% were acquired, respectively. Therefore, it was demonstrated that the preparation method of fucoxanthin established in this study had an applicability to brown algae, which improved the utilization value of raw materials.
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Affiliation(s)
| | | | | | | | - Yanbin Lu
- Key Laboratory of Aquatic Products Processing of Zhejiang Province, Collaborative Innovation Center of Seafood Deep Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310012, China; (D.C.); (Y.J.); (D.H.); (J.Y.); (Z.D.)
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7
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Choi H, Soland NE, Moss MR, Liu J, Prestangen RR, Katahira R, Lee SJ, Thorson MR, Freeman CJ, Karp EM. The cell utilized partitioning model as a predictive tool for optimizing counter-current chromatography processes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Malca-Garcia GR, Liu Y, Nikolić D, Friesen JB, Lankin DC, McAlpine JB, Chen SN, Pauli GF. Investigation of red clover (Trifolium pratense) isoflavonoid residual complexity by off-line CCS-qHNMR. Fitoterapia 2022; 156:105016. [PMID: 34416305 PMCID: PMC8742771 DOI: 10.1016/j.fitote.2021.105016] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 01/03/2023]
Abstract
The importance of Trifolium pratense L. as a dietary supplement and its use in traditional medicine prompted the preparation of a thorough metabolite profile. This included the identification and quantitation of principal constituents as well as low abundant metabolites that constitute the residual complexity (RC) of T. pratense bioactives. The purity and RC of isoflavonoid fractions from standardized red clover extract (RCE) was determined using an off-line combination of countercurrent separation (CCS) and two orthogonal analytical methodologies: quantitative 1H NMR spectroscopy with external calibration (EC-qHNMR) and LC-MS. A single-step hydrostatic CCS methodology (Centrifugal Partition Chromatography [CPC]) was developed that fractionated the isoflavonoids with a hexanes-ethyl acetate-methanol-water (HEMWat) 5.5/4.5/5/5, v/v solvent system (SS) into 75 fractions containing 3 flavonolignans, 2 isoflavonoid glycosides, as well as 17 isoflavonoids and related compounds. All metabolites were identified and quantified by qHNMR spectroscopy. The data led to the creation of a complete isoflavonoid profile to complement the biological evaluation. For example, fraction 69 afforded 90.5% w/w biochanin A (17), with 0.33% w/w of prunetin (16), and 0.76% w/w of maackiain (15) as residual components. Fraction 27 with 89.4% w/w formononetin (13) as the major component had, in addition, a residual complexity consisting of 3.37%, 0.73%, 0.68% w/w of pseudobaptigenin (11), kaempferol (10) and pratensein (8), respectively. Despite the relatively high resolving power of CPC, and not unexpectedly, the chromatographic fractions retained varying degrees of the original metabolomic diversity. Collectively, the extent of metabolomic diversity should be recognized and used to guide the development of isolation strategies, especially when generating samples for bioactivity evaluation. The simultaneous structural and quantitative characterization enabled by qNMR, supported by LC-MS measurements, enables the evaluation of a relatively large number of individual fractions and, thereby, advances both the chemical and biological evaluation of active principles in complex natural products.
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Affiliation(s)
- Gonzalo R Malca-Garcia
- UIC Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA
| | - Yang Liu
- UIC Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA
| | - Dejan Nikolić
- UIC Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA
| | - J Brent Friesen
- Center for Natural Product Technologies (CENAPT), Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA; Physical Sciences Department, Rosary College of Arts and Sciences, Dominican University, 7900 W. Division Street, River Forest, IL 60305, USA
| | - David C Lankin
- UIC Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA
| | - James B McAlpine
- UIC Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA
| | - Shao-Nong Chen
- UIC Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA
| | - Guido F Pauli
- UIC Center for Botanical Dietary Supplements Research, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA; Center for Natural Product Technologies (CENAPT), Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, 833 S Wood Street, Chicago, IL 60612, USA.
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Martynova MM, Apostolov AG, Kostanyan AE. Experimental Study of the Chromatographic Extraction Process of Separation in a Closed Multistage Loop. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2021. [DOI: 10.1134/s0040579520050176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Isolation of N-Ethyl-2-pyrrolidinone-Substituted Flavanols from White Tea Using Centrifugal Countercurrent Chromatography Off-Line ESI-MS Profiling and Semi-Preparative Liquid Chromatography. Molecules 2021; 26:molecules26237284. [PMID: 34885862 PMCID: PMC8658928 DOI: 10.3390/molecules26237284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022] Open
Abstract
N-Ethyl-2-pyrrolidinone-substituted flavanols (EPSF) are marker compounds for long-term stored white teas. However, due to their low contents and diasteromeric configuration, EPSF compounds are challenging to isolate. In this study, two representative epimeric EPSF compounds, 5'''R- and 5'''S-epigallocatechin gallate-8-C N-ethyl-2-pyrrolidinone (R-EGCG-cThea and S-EGCG-cThea), were isolated from white tea using centrifugal partition chromatography (CPC). Two different biphasic solvent systems composed of 1. N-hexane-ethyl acetate-methanol-water (1:5:1:5, v/v/v/v) and 2. N-hexane-ethyl acetate-acetonitrile-water (0.7:3.0:1.3:5.0, v/v/v/v) were used for independent pre-fractionation experiments; 500 mg in each separation of white tea ethyl acetate partition were fractionated. The suitability of the two solvent systems was pre-evaluated by electrospray mass-spectrometry (ESI-MS/MS) analysis for metabolite distribution and compared to the results of the CPC experimental data using specific metabolite partition ratio KD values, selectivity factors α, and resolution factors RS. After size-exclusion and semi-preparative reversed-phase liquid chromatography, 6.4 mg of R-EGCG-cThea and 2.9 mg of S-EGCG-cThea were recovered with purities over 95%. Further bioactivity evaluation showed that R- and S-EGCG-cThea possessed in vitro inhibition effects on α-glucosidase with IC50 of 70.3 and 161.7 μM, respectively.
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Chen Z, Tian Z, Zhang Y, Wang X, Xu J, Li Y, Jiang H, Su B. Separation of chemical constituents in Bidens pilosa Linn. var. radiata Sch. Bip. by elution-extrusion counter-current chromatography using two new three-phase solvent systems. J Sep Sci 2021; 44:3540-3550. [PMID: 34329528 DOI: 10.1002/jssc.202100330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/26/2021] [Accepted: 07/26/2021] [Indexed: 11/11/2022]
Abstract
Two new three-phase solvent systems combined with elution-extrusion counter-current chromatography mode were used to study the chemical constituents in Bidens pilosa Linn. var. radiata Sch. Bip. The first novel solvent system consisted of n-hexane, acetonitrile, chloroform, and water in a ratio of 5:5:1:5, which was selected for elution-extrusion counter-current chromatography to separate the n-hexane extraction part. A total of six constituents were obtained from this part in the up phase as the stationary phase and the middle phase as the mobile phase. The second novel solvent system, composed of n-hexane-butyl acetate-acetonitrile-water (3:1:4:3, v/v/v/v), was used for separating ethyl acetate extract of Bidens pilosa Linn. var. radiata Sch. Bip. Eight compounds were successfully isolated using elution-extrusion counter-current chromatography elution-extrusion mode. Fourteen chemical constituents were identified as 2-β-D-glucopyranosytoxy-1-hydroxy-5(E)-tridecene-7,9,11-triyne (Y1), 3-β-D-glucopyranosyloxy -1-hydroxy-6(E)-tetradecene-8,10,12-triyne (Y2), 1, 2-dihydroxy-5(E)-tridecene-7,9, 11-triyne (Y3), isorhamnetin (Y4), kaempferol (Y5), icthyothereolacetate (Y6), quercetin-3-O-β-D- galactopyranosyl-7-O-β-D-glucopyranoside (W1), quercetin 3-O-β-L-rhamnopyranoside (W2), neosperidin dihydrochalcone (W3), quercetin (W4), quercetagetin-3,6,4' -trimethoxyl- 7-O-β-D-glucopyranoside (W5), taxifolin (W6), luteolin (W7), and apigenin (W8) by spectra of 1 H-NMR and 13 C-NMR data. Among them, compounds Y1, Y2, Y3, and Y6 belong to polyacetylene compounds, and the rest were flavonoids. In addition, counter-current chromatography has been used to separate polyacetylene compounds for the first time. All compounds in this method were isolated from Bidens pilosa Linn. var. radiata Sch. Bip. for the first time.
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Affiliation(s)
- Zhenshan Chen
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China
| | - Zhenhua Tian
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China
| | - Yaowen Zhang
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China
| | - Xiaoming Wang
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China
| | - Jinqi Xu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China
| | - Yunlun Li
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China.,Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China.,Shandong Province Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China
| | - Haiqiang Jiang
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China.,Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China.,Shandong Province Key Laboratory of Traditional Chinese Medicine for Basic Research, Shandong University of Traditional Chinese Medicine, Jinan, 250355, P. R. China
| | - Benzheng Su
- Shandong Academy of Traditional Chinese Medicine, Jinan, 250014, P. R. China
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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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Kostanyan AE. A simple and highly efficient counter-current chromatography method for the isolation of concentrated fractions of compounds based on the sequential sample loading technique: Comparative theoretical study of conventional multiple and intermittent sample loading counter-current chromatography separations. J Chromatogr A 2021; 1647:462163. [PMID: 33965681 DOI: 10.1016/j.chroma.2021.462163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/02/2021] [Accepted: 04/11/2021] [Indexed: 10/21/2022]
Abstract
A new modification of the conventional multiple sample loading (MSL) mode - sequential sample loading (SSL) - is suggested to enhance further the performance of the counter-current chromatography (CCC) separation processes. The sequential sample loading technique is simple and easy to implement: the continuous sample solution supply to a CCC column is alternated (interrupted) with short periods of the "pure" mobile phase supply. Periodic (batch) and continuous SSL CCC separations can be designed and implemented. In continuous processes, the sample solution loading is carried out in the form of separate series, consisting of a number of sequential sample solution loads. In this work, the modeling of the conventional multiple sample loading and the sequential sample loading counter-current chromatography is used to compare the two operating modes considered. Equations for the calculation of band profiles, the recovery yield and the purity are given. Equations are also derived permitting the calculation of the optimum operating parameters of the separation processes. It is shown that the use of sequential sample loading makes it possible to produce fractions of purified compounds with a much higher concentration than in the original sample solution. The simulations of the conventional multiple sample loading and the sequential sample loading counter-current chromatography separations are presented in "Mathcad" software.
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Affiliation(s)
- Artak E Kostanyan
- Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, Moscow 119991, Russia.
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14
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Liang N, Nečasová L, Zhao YY, Curtis JM. Advances in the separation of gangliosides by counter-current chromatography (CCC). J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1174:122701. [PMID: 33957356 DOI: 10.1016/j.jchromb.2021.122701] [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: 08/01/2020] [Revised: 03/30/2021] [Accepted: 04/02/2021] [Indexed: 02/07/2023]
Abstract
Gangliosides play critical roles in the development of many progressive diseases. Due to their structural diversity, efficient methods are needed to separate individual gangliosides for studies of their functions, and for use as standards in the analysis of ganglioside mixtures. This proof-of-concept study reports a useful analytical-semi-preparative scale counter-current chromatography (CCC) enrichment of multiple ganglioside homologues of various species and classes at the milligram level. Since few individual ganglioside standards were available, this research aimed to achieve analytical-semi-preparative scale separation of gangliosides by differences in saccharide monomer compositions (classes), their arrangements (species), or ceramide compositions (homologues), using CCC. The solvent system composition, addition of solvent modifiers, and elution modes were all adjusted to separate porcine gangliosides, mainly GM1 (d36:1), GD1a (d36:1), GD1b (d36:1) and their (d38:1) homologues as a demonstration. The eluted compounds were analyzed by flow-injection analysis (FIA)-MS and LC-MS/MS. A two-phase solvent system, consisting of butanol/methyl t-butyl ether/acetonitrile/water at a ratio of 2:4:3:8 (v/v/v/v) with 0.5% (v/v) acetic acid added to the lower phase, was used to separate mg-levels of porcine gangliosides under dual-mode elution. The relative abundances of the above 6 gangliosides increased from 10 to 21% in the ganglioside extract to 55-73% in the collected fractions through the purification.
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Affiliation(s)
- Nuanyi Liang
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada.
| | - Lucie Nečasová
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - Yuan-Yuan Zhao
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - Jonathan M Curtis
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
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15
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H 2O-Induced Hydrophobic Interactions in MS-Guided Counter-Current Chromatography Separation of Anti-Cancer Mollugin from Rubia cordifolia. Molecules 2021; 26:molecules26030751. [PMID: 33540504 PMCID: PMC7867130 DOI: 10.3390/molecules26030751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/19/2021] [Accepted: 01/28/2021] [Indexed: 11/17/2022] Open
Abstract
Counter-current chromatography (CCC) is a unique liquid–liquid partition chromatography and largely relies on the partition interactions of solutes and solvents in two-phase solvents. Usually, the two-phase solvents used in CCC include a lipophilic organic phase and a hydrophilic aqueous phase. Although a large number of partition interactions have been found and used in the CCC separations, there are few studies that address the role of water on solvents and solutes in the two-phase partition. In this study, we presented a new insight that H2O (water) might be an efficient and sensible hydrophobic agent in the n-hexane-methanol-based two-phase partition and CCC separation of lipophilic compounds, i.e., anti-cancer component mollugin from Rubia cordifolia. Although the n-hexane-methanol-based four components solvent systems of n-hexane-ethyl acetate-methanol-water (HEMWat) is one of the most popular CCC solvent systems and widely used for natural products isolation, this is an interesting trial to investigate the water roles in the two-phase solutions. In addition, as an example, the bioactive component mollugin was targeted, separated, and purified by MS-guided CCC with hexane-methanol and minor water as a hydrophobic agent. It might be useful for isolation and purification of lipophilic mollugin and other bioactive compounds complex natural products and traditional Chinese medicines.
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16
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Dereplication of Natural Extracts Diluted in Propylene Glycol, 1,3-Propanediol and Glycerin. Comparison of Leontopodium alpinum Cass. (Edelweiss) Extracts as a Case Study. COSMETICS 2021. [DOI: 10.3390/cosmetics8010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Many natural extracts used as cosmetic ingredients are available as solutions prepared in high-boiling-point solvents, called carrier solvents, such as propylene glycol (1,2-propanediol), propanediol (1,3-propanediol) and glycerin. The upstream chemical profiling of these extracts represents a major asset for the cosmetic industry, because it accelerates product development. A new workflow for the rapid characterization of the main metabolites present in natural extracts diluted in propylene glycol and 1,3-propanediol is presented here as an extension of previous works on glycerin-containing extracts. This method is an optimized version of a well-established dereplication procedure and consists of a fractionation by centrifugal partition chromatography followed by 13C nuclear magnetic resonance analysis and dedicated data processing. The concentration by evaporation under reduced pressure was considered as a pertinent preliminary step, particularly adapted to the analysis of highly diluted extracts. A dried hydro-ethanolic extract of Leontopodium alpinum Cass. was prepared at laboratory scale and used for method validation. Three solutions at 5% wt. of dry extract were prepared with propylene glycol/water (1:1), 1,3-propanediol/water (1:1) and glycerin/water (1:1) as carrier solvents. The dereplication workflow was applied to the three resulting L. alpinum extracts. Each study led to the quick identification of 26 metabolites including five flavonoids (luteolin and its derivatives), five hydroxycinnamic acids (among which are leontopodic acids), sugars and organic acids.
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17
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Kostanyan AE, Galieva ZN, Semenov AA, Aldushkin AV. Chromatographic behavior of six lanthanides on a centrifugal mixer-settler extractor cascade. J Chromatogr A 2020; 1634:461686. [PMID: 33220585 DOI: 10.1016/j.chroma.2020.461686] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 11/17/2022]
Abstract
This work furthers the development of counter-current chromatography as an industrial separation process method. It was demonstrated that the industrial counter-current chromatography methods, in particular, for the separation groups of rare earth metals, can be implemented in a modified cascade of centrifugal mixer-settler extractors. The retention behavior of rare earth elements (samarium, europium, gadolinium, terbium, dysprosium and yttrium) on the pilot chromatographic unit consisting of 70 serially connected centrifugal mixer-settler extractors was experimentally studied under isocratic elution conditions using the mixture of 30 vol.% CyanexⓇ572 + 10 vol.% tributylphosphate in a hydrocarbon diluent as the stationary phase and aqueous nitric acid as the mobile phase. Theoretical analysis of experimental studies showed an acceptable agreement between the assumptions of the theory and experimental results.
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Affiliation(s)
- A E Kostanyan
- Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 31, Moscow 119991, Russia.
| | - Z N Galieva
- Laboratory of Innovation Technologies, LLC. (LIT LLC), Korolev, 141090, Russia
| | - A A Semenov
- Laboratory of Innovation Technologies, LLC. (LIT LLC), Korolev, 141090, Russia
| | - A V Aldushkin
- Laboratory of Innovation Technologies, LLC. (LIT LLC), Korolev, 141090, Russia
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18
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Kostanyan AE. Increasing Efficiency of the Separation of Substance Mixtures by Methods of Liquid–Liquid Chromatography. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820110088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Kostanyan AA, Voshkin AA, Belova VV. Analytical, Preparative, and Industrial-Scale Separation of Substances by Methods of Countercurrent Liquid-Liquid Chromatography. Molecules 2020; 25:E6020. [PMID: 33353256 PMCID: PMC7766798 DOI: 10.3390/molecules25246020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/12/2020] [Accepted: 12/15/2020] [Indexed: 11/16/2022] Open
Abstract
Countercurrent liquid-liquid chromatographic techniques (CCC), similar to solvent extraction, are based on the different distribution of compounds between two immiscible liquids and have been most widely used in natural product separations. Due to its high load capacity, low solvent consumption, the diversity of separation methods, and easy scale-up, CCC provides an attractive tool to obtain pure compounds in the analytical, preparative, and industrial-scale separations. This review focuses on the steady-state and non-steady-state CCC separations ranging from conventional CCC to more novel methods such as different modifications of dual mode, closed-loop recycling, and closed-loop recycling dual modes. The design and modeling of various embodiments of CCC separation processes have been described.
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Affiliation(s)
| | - Andrey A. Voshkin
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninskii pr., 119991 Moscow, Russia; (A.A.K.); (V.V.B.)
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20
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Martynova MM, Apostolov AG, Kostanyan AE. Studying the Effect of Recycling on the Semibatch Process of the Extraction Separation of Components in a Multistage Loop. THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2020. [DOI: 10.1134/s0040579520050164] [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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21
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Theoretical study of industrial scale closed-loop recycling counter-current chromatography separations. J Chromatogr A 2020; 1633:461630. [DOI: 10.1016/j.chroma.2020.461630] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 10/09/2020] [Accepted: 10/14/2020] [Indexed: 01/19/2023]
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22
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Nam JW, Phansalkar RS, Lankin DC, McAlpine JB, Leme-Kraus AA, Bedran-Russo AK, Chen SN, Pauli GF. Targeting Trimeric and Tetrameric Proanthocyanidins of Cinnamomum verum Bark as Bioactives for Dental Therapies. JOURNAL OF NATURAL PRODUCTS 2020; 83:3287-3297. [PMID: 33151073 PMCID: PMC8041212 DOI: 10.1021/acs.jnatprod.0c00570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The present study elucidated the structures of three A-type tri- and tetrameric proanthocyanidins (PACs) isolated from Cinnamomum verum bark to the level of absolute configuration and determined their dental bioactivity using two therapeutically relevant bioassays. After selecting a PAC oligomer fraction via a biologically diverse bioassay-guided process, in tandem with centrifugal partition chromatography, phytochemical studies led to the isolation of PAC oligomers that represent the main bioactive principles of C. verum: two A-type tetrameric PACs, epicatechin-(2β→O→7,4β→8)-epicatechin-(4β→6)-epicatechin-(2β→O→7,4β→8)-catechin (1) and parameritannin A1 (2), together with a trimer, cinnamtannin B1 (3). Structure determination of the underivatized proanthocyanidins utilized a combination of HRESIMS, ECD, 1D/2D NMR, and 1H iterative full spin analysis data and led to NMR-based evidence for the deduction of absolute configuration in constituent catechin and epicatechin monomeric units.
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Affiliation(s)
- Joo-Won Nam
- Department of Pharmaceutical Sciences, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), University of Illinois at Chicago, Chicago, IL 60612, United States
- College of Pharmacy, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Korea
| | - Rasika S. Phansalkar
- Department of Pharmaceutical Sciences, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), University of Illinois at Chicago, Chicago, IL 60612, United States
| | - David C. Lankin
- Department of Pharmaceutical Sciences, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), University of Illinois at Chicago, Chicago, IL 60612, United States
| | - James B. McAlpine
- Department of Pharmaceutical Sciences, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), University of Illinois at Chicago, Chicago, IL 60612, United States
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Ariene A. Leme-Kraus
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Ana K. Bedran-Russo
- Department of Restorative Dentistry, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, United States
- Department of General Dental Sciences, School of Dentistry, Marquette University, Milwaukee, WI 53233, United States
| | - Shao-Nong Chen
- Department of Pharmaceutical Sciences, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), University of Illinois at Chicago, Chicago, IL 60612, United States
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
| | - Guido F. Pauli
- Department of Pharmaceutical Sciences, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS), University of Illinois at Chicago, Chicago, IL 60612, United States
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States
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23
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Abuaf M, Mastai Y. Synthesis of Multi Amino Acid Chiral Polymeric Microparticles for Enantioselective Chemistry. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Meir Abuaf
- Department of Chemistry and Institute of Nanotechnology Bar‐Ilan University Ramat‐Gan 52900 Israel
| | - Yitzhak Mastai
- Department of Chemistry and Institute of Nanotechnology Bar‐Ilan University Ramat‐Gan 52900 Israel
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24
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Guo Y, Tong S, Zhang K, Yan J. Recent progress in separation prediction of counter-current chromatography. J Sep Sci 2020; 44:6-16. [PMID: 32926765 DOI: 10.1002/jssc.202000473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/11/2020] [Accepted: 08/09/2020] [Indexed: 12/21/2022]
Abstract
As a liquid-liquid partition chromatography, counter-current chromatography has advantages in large sample loading capacity without irreversible adsorption, which has been widely applied in separation and purification fields. The main factors, including partition coefficient, two-phase solvent systems, apparatus, and operating parameters greatly affect the separation process of counter-current chromatography. To promote the applications of counter-current chromatography, it is essential to develop theoretical research to master the principles of counter-current chromatographic separations so as to achieve predictions before laborious trials. In this article, recent progress about separation prediction methods are reviewed from a point of the steady and unsteady state of the mass transfer process of counter-current chromatography and its mass transfer characteristics, and then it is divided into three aspects: prediction of partition coefficient, modeling the thermodynamic process of counter-current chromatography, and modeling the dynamic process of counter-current chromatography.
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Affiliation(s)
- Yuru Guo
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Shengqiang Tong
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Keqing Zhang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Jizhong Yan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, P. R. China
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25
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Sun X, Pei D, Duan W, Liu J, Di D, Huang X. Full use of the liquid nature of the stationary phase: The development of elution‐extrusion counter current chromatography. J Sep Sci 2020; 43:3573-3584. [DOI: 10.1002/jssc.202000341] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/26/2020] [Accepted: 07/01/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Xiao Sun
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory of Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences (CAS) Lanzhou P. R. China
- University of Chinese Academy of Sciences Beijing P. R. China
| | - Dong Pei
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory of Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences (CAS) Lanzhou P. R. China
| | - Wen‐Da Duan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory of Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences (CAS) Lanzhou P. R. China
- University of Chinese Academy of Sciences Beijing P. R. China
| | - Jian‐Fei Liu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory of Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences (CAS) Lanzhou P. R. China
| | - Duo‐Long Di
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory of Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences (CAS) Lanzhou P. R. China
| | - Xin‐Yi Huang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory of Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences (CAS) Lanzhou P. R. China
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26
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Kim SB, Bisson J, Friesen JB, Pauli GF, Simmler C. Selective Chlorophyll Removal Method to "Degreen" Botanical Extracts. JOURNAL OF NATURAL PRODUCTS 2020; 83:1846-1858. [PMID: 32426979 PMCID: PMC7398693 DOI: 10.1021/acs.jnatprod.0c00005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Chlorophylls are present in all extracts from the aerial parts of green plant materials. Chlorophylls may act as in vitro bioassay nuisance compounds, possibly preventing the reproducibility and accurate measurement of readouts due to their UV/vis absorbance, fluorescence properties, and tendency to precipitate in aqueous media. Despite the diversity of methods used traditionally to remove chlorophylls, details about their mode of operation, specificity, and reproducibility are scarce. Herein, we report a selective and efficient 45 min liquid-liquid/countercurrent chlorophyll cleanup method using Centrifugal Partition Chromatography (CPC) with a solvent system composed of hexanes-EtOAc-MeOH-water (5:5:5:5, v/v) in elution-extrusion mode. The broader utility of the method was assessed with four different extracts prepared from three well-characterized plant materials: Epimedium sagittatum (leaves), Senna alexandrina (leaves), and Trifolium pratense (aerial parts). The reproducibility of the method, the selectivity of the chlorophyll removal, as well as the preservation of the phytochemical integrity of the resulting chlorophyll-free ("degreened") extracts were evaluated using HPTLC, UHPLC-UV, 1H NMR spectroscopy, and LC-MS as orthogonal phytochemical methods. The cleanup process adequately preserves the metabolomic diversity as well as the integrity of the original extracts. This method was found to be sufficiently rapid for the "degreening" of botanical extracts in higher-throughput sample preparation for further biological screening.
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Affiliation(s)
- Seon Beom Kim
- Center for Natural Product Technologies, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS) and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, United States
| | - Jonathan Bisson
- Center for Natural Product Technologies, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS) and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, United States
| | - J. Brent Friesen
- Center for Natural Product Technologies, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS) and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, United States
- Physical Sciences Department, Rosary College of Arts and Sciences, Dominican University, River Forest, IL 60305, United States
| | - Guido F. Pauli
- Center for Natural Product Technologies, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS) and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, United States
| | - Charlotte Simmler
- Center for Natural Product Technologies, Program for Collaborative Research in the Pharmaceutical Sciences (PCRPS) and Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, United States
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27
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Gong Y, Huang XY, Pei D, Duan WD, Zhang X, Sun X, Di DL. The applicability of high-speed counter current chromatography to the separation of natural antioxidants. J Chromatogr A 2020; 1623:461150. [PMID: 32505270 DOI: 10.1016/j.chroma.2020.461150] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 04/01/2020] [Accepted: 04/18/2020] [Indexed: 01/10/2023]
Abstract
Antioxidants play an essential role in human health, as they have been found to be capable of lowering the incidence of many diseases, such as cancer and angiocardiopathy. Currently, more attention is paid to natural antioxidants because of the possible insecurity of synthetic antioxidants. Thus, the development of efficient techniques or methods to separate antioxidants from natural sources is requested urgently. High-speed counter current chromatography (HSCCC) is a unique support-free liquid-liquid chromatographic technique and has been widely applied in the field of separation of natural products. In this review, we summarize and analyze the related researches on the application of HSCCC in the separation of various natural antioxidants so far. The purpose of the article is to provide a certain theoretical support for the separation of natural antioxidants by HSCCC, and to make full use of advantages of HSCCC in the separation of bioactive components. In particular, some key problems associated with the separation strategies, the structural categories of natural antioxidants, solvent system choices, and the application of different elution modes in HSCCC separation, are summarized and commented. We expect that the content reviewed can offer more evidence for the development of the field of natural antioxidants separation, so as to achieve large-scale preparation of natural antioxidants.
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Affiliation(s)
- Yuan Gong
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China; University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Xin-Yi Huang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China.
| | - Dong Pei
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China; Center of Resource Chemical and New Material, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Qingdao, P.R. China
| | - Wen-Da Duan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China; University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Xia Zhang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China; University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Xiao Sun
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China; University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Duo-Long Di
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China.
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28
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Kostanyan A, Martynova M. Modeling of two semi-continuous methods in liquid–liquid chromatography: Comparing conventional and closed-loop recycling modes. J Chromatogr A 2020; 1614:460735. [DOI: 10.1016/j.chroma.2019.460735] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 01/22/2023]
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29
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Zhang L, Wu S. Hydrophobic and hydrophilic interactions in countercurrent chromatography. J Chromatogr A 2020; 1611:460576. [DOI: 10.1016/j.chroma.2019.460576] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 06/20/2019] [Accepted: 09/26/2019] [Indexed: 11/25/2022]
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30
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Xia M, Liu C, Gao L, Lu Y. One-Step Preparative Separation of Phytosterols from Edible Brown Seaweed Sargassum horneri by High-Speed Countercurrent Chromatography. Mar Drugs 2019; 17:E691. [PMID: 31818004 PMCID: PMC6949986 DOI: 10.3390/md17120691] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/03/2019] [Accepted: 12/05/2019] [Indexed: 12/02/2022] Open
Abstract
Sargassum horneri, a sargassaceae brown alga, is one of the main species in the subtidal seaweeds flora extensively distributed in the Yellow and East China Sea. It has been proven that the phytosterols are an important class of bioactive substances in S. horneri. In this work, a counter-current chromatography approach is proposed for preparative separation of phytol and two analogue sterols from a crude extract of S. horneri. A two-phase solvent system composed of n-hexane-acetonitrile-methanol (5:5:6, v/v) was selected and optimized. The effects of rotary speed and flow rate on the retention of the stationary phase were carefully studied. Under the optimum conditions, phytol and two analogue sterols, fucosterol and saringosterol, were baseline separated, producing 19.8 mg phytol, 23.7 mg fucosterol, and 3.1 mg saringosterol from 300 mg of crude S. horneri extract in one-step separation. The purities of three target compounds were all above 85%. The structures of phytol and two sterols were identified by nuclear magnetic resonance spectroscopy.
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Affiliation(s)
- Menglu Xia
- Key Laboratory of Aquatic Products Processing of Zhejiang Province, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310035, China
| | - Chunping Liu
- Key Laboratory of Aquatic Products Processing of Zhejiang Province, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310035, China
| | - Lei Gao
- Hangzhou Nafen BioChem Corporation, Hangzhou 310008, China
| | - Yanbin Lu
- Key Laboratory of Aquatic Products Processing of Zhejiang Province, Institute of Seafood, Zhejiang Gongshang University, Hangzhou 310035, China
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31
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Thi Tran TM, Nguyen Thanh B, Moussa-Ayoub TE, Rohn S, Jerz G. Profiling of polar metabolites in fruits of Opuntia stricta var. dillenii by ion-pair high-performance countercurrent chromatography and off-line electrospray mass-spectrometry injection. J Chromatogr A 2019; 1601:274-287. [DOI: 10.1016/j.chroma.2019.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 05/31/2019] [Accepted: 06/03/2019] [Indexed: 11/27/2022]
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Morley R, Minceva M. Operating mode and parameter selection in liquid-liquid chromatography. J Chromatogr A 2019; 1617:460479. [PMID: 31477275 DOI: 10.1016/j.chroma.2019.460479] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/29/2019] [Accepted: 08/22/2019] [Indexed: 12/27/2022]
Abstract
The presence of a liquid stationary phase in liquid-liquid chromatography (LLC) allows for high versatility of operation as well as adaptability to different sample types and separation tasks. LLC, also known as countercurrent chromatography (CCC) or centrifugal partition chromatography (CPC), offers the user a variety of operating modes, many of which have no direct equivalent in conventional preparative liquid-solid chromatography. These operating modes have the potential to greatly improve LLC separation performance compared to the standard "classical" isocratic batch injection mode, and they often require minimal to no addition of equipment to the standard set-up. However, reports of the use of alternative LLC operating modes make up only a fraction of the literature. This is likely due, at least in part, to the lack of clear guidelines and methods for operating mode and parameter selection, leaving alternative process options to be avoided and underutilized. This review seeks to remedy this by providing a thorough overview of the available LLC operating modes, identifying the key characteristics, advantages and disadvantages, and areas of application of each. Additionally, the equations and short-cut models aiding in operating mode and parameter selection are presented and critiqued, and their notation is unified for clarity. By rendering LLC and its alternative operating modes more accessible to current and prospective users, it is hoped to help expand the application of this technology and support the achievement of its full potential.
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Affiliation(s)
- Raena Morley
- Biothermodynamics, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Maximus-von-Imhof-Forum 2, 85354 Freising, Germany
| | - Mirjana Minceva
- Biothermodynamics, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Maximus-von-Imhof-Forum 2, 85354 Freising, Germany.
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Yang Z, Guo P, Han R, Wu D, Gao JM, Wu S. Methanol linear gradient counter-current chromatography for the separation of natural products: Sinopodophyllum hexandrum as samples. J Chromatogr A 2019; 1603:251-261. [PMID: 31266644 DOI: 10.1016/j.chroma.2019.06.055] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/25/2019] [Accepted: 06/26/2019] [Indexed: 01/18/2023]
Abstract
Counter-current chromatography (CCC) is a unique, liquid-liquid partition chromatography process. Both the mobile and stationary phases are liquids, so no solid support matrix is used. CCC has gained wide acceptance as a preparative technique in a variety of fields. Because the mobile and stationary phases are both liquids, gradient elution is difficult to perform with CCC. Phase equilibrium must be maintained, so any change in the composition of one phase may induce a compositional change in the other. In this work, a new linear gradient elution method was developed for CCC. Biphasic solvent systems containing heptane, ethyl acetate, methanol, and water (HepEMWat) in various ratios were prepared and used to optimize both isocratic and linear gradient CCC separation with methanol. We first separated a test mixture of four standard compounds with partition coefficients ranging from 0.8 to 7.8. The separation resembled a reversed-phase process, and elution was performed while progressively decreasing the polarity of the mobile phase. Target molecules with small partition coefficients eluted first in the lower phase of the optimized HepEMWat solvent system. Elution of constituents with large partition coefficients was quite slow under isocratic conditions. Separation time was significantly reduced when elution was performed with a linear gradient using methanol and the optimal HepEMWat system. Elution with a 3:7:4:6 (v/v/v/v) HepEMWat system took approximately 200 min. This included an 80-min isocratic step, followed by gradient elution with methanol from 0% to 30%. The optimized methanol linear gradient CCC method was then used to separate a complex mixture of natural products isolated from Sinopodophyllum hexandrum (Royle) Ying roots. Twelve compounds with a wide range of polarities were well-resolved in a single separation. We have developed a convenient and cost-effective strategy for the separation of complex mixtures. No tedious mobile phase preparation step is required. The volume of unused mobile phase is minimal, so little solvent is wasted. The method is an important advance for the separation of mixtures that contain many compounds with a large range of polarities and partition coefficients, which are common features of natural products.
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Affiliation(s)
- Zhi Yang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling, 712100, Shaanxi, China.
| | - Peipei Guo
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling, 712100, Shaanxi, China
| | - Rui Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling, 712100, Shaanxi, China
| | - Dingfang Wu
- Rui'an Food Inspection and Testing Center, Rui'an, 325204, Zhejiang Province, China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xiong Road, Yangling, 712100, Shaanxi, China
| | - Shihua Wu
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.
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Kostanyan AE, Galieva ZN. Modeling of closed-loop recycling dual-mode counter-current chromatography based on non-ideal recycling model. J Chromatogr A 2019; 1603:240-250. [PMID: 31221429 DOI: 10.1016/j.chroma.2019.06.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/21/2019] [Accepted: 06/10/2019] [Indexed: 12/13/2022]
Abstract
Closed-loop recycling dual-mode counter-current chromatography (CLR DM CCC) includes two separation stages: 1 - closed-loop recycling separation of solutes with mobile x-phase (CLR CCC); 2 - separation of solutes with the mobile y-phase in the opposite flow direction. Previous analysis of CLR DM CCC separations has been limited to the ideal recycling model, which neglects extra-column dispersion. In this study, the analysis of CLR CCC separations is based on the non-ideal recycling model, which takes into account the extra-column dispersion caused by the recycling system. This is of great practical importance, since by selecting the optimal parameters of the recycling system the separation can be significantly improved. Comparative analysis of CLR CCC and CLR DM CCC separations has shown that at low separations factors compounds with low partition coefficients can be separated by CLR CCC using recycling systems with a long recycling line; the separation of compounds with high partition coefficients and the separation of complex mixtures can be performed by CLR DM CCC. Simple equations for simulation and design of CLR DM CCC separations are developed. Several variants of the implementation of this separation method are discussed; examples of simulation are presented in "Mathcad" program.
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Affiliation(s)
- Artak E Kostanyan
- Kurnakov Institute of General & Inorganic Chemistry, Russian Academy of Sciences, Leninsky, Prospekt 31, Moscow, 119991, Russia.
| | - Zhanetta N Galieva
- Laboratory of innovation technologies, LLC. (LIT LLC), Korolev, 141090, Russia
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Huang X, Zhang X, Pei D, Liu J, Gong Y, Aisa HA, Di D. Continuous separation of maslinic and oleanolic acids from olive pulp by high‐speed countercurrent chromatography with elution‐extrusion mode. J Sep Sci 2019; 42:2080-2088. [DOI: 10.1002/jssc.201900112] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 05/06/2019] [Accepted: 05/11/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Xin‐Yi Huang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources & Key Laboratory for Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou P. R. China
| | - Xia Zhang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources & Key Laboratory for Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou P. R. China
| | - Dong Pei
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources & Key Laboratory for Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou P. R. China
| | - Jian‐Fei Liu
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources & Key Laboratory for Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou P. R. China
| | - Yuan Gong
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources & Key Laboratory for Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou P. R. China
| | - Haji Akber Aisa
- Key Laboratory of Plant Resources and Chemistry of Arid ZoneXinjiang Technical Institute of Physics and ChemistryChinese Academy of Sciences Urumqi P. R. China
- State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource UtilizationXinjiang Technical Institute of Physics and ChemistryChinese Academy of Sciences Urumqi P. R. China
| | - Duo‐Long Di
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources & Key Laboratory for Natural Medicine of Gansu ProvinceLanzhou Institute of Chemical PhysicsChinese Academy of Sciences Lanzhou P. R. China
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36
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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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Castillo-Fraire CM, Poupard P, Guilois-Dubois S, Salas E, Guyot S. Preparative fractionation of 5′-O-caffeoylquinic acid oxidation products using centrifugal partition chromatography and their investigation by mass spectrometry. J Chromatogr A 2019; 1592:19-30. [DOI: 10.1016/j.chroma.2019.01.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 01/03/2019] [Accepted: 01/25/2019] [Indexed: 10/27/2022]
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38
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He X, Zhang H, Liang X. Separation of six compounds from pigeon pea leaves by elution-extrusion counter-current chromatography. J Sep Sci 2019; 42:1202-1209. [PMID: 30653252 DOI: 10.1002/jssc.201801111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/10/2019] [Accepted: 01/11/2019] [Indexed: 12/29/2022]
Abstract
A valid and reliable method was established to separate six compounds from pigeon pea leaves via elution-extrusion counter-current chromatography. A solvent system composed of n-hexane/methanol/formic acid aqueous solution with pH = 3 (10:6:4, v/v) was screened to achieve satisfactory isolation from the ethanol extract of pigeon pea leaves. Four compounds, 9.2 mg of compound 1 (96.8%), 3.2 mg of 2 (88.0%), 6.2 mg of 4 (94.2%) and 25.2 mg of 5 (94.2%), were obtained by conventional elution from 100 mg of the precipitation fraction, respectively. Two compounds, 14.4 mg of 3 (96.3%) and 28.1 mg of 6 (96.6%), with high K values were obtained by the subsequent extrusion procedure. The compounds 1-6 were identified as 3-methoxy-5-(2-phenylethenyl)-phenol, pinostrobin chalcone, pinostrobin, 2-hydroxy-4-methoxy-6-(2-phenylvinyl)-benzoic acid, longistylin C and cajaninstilbene acid by quadrupole time-of-flight mass spectrometry, and 1 H and 13 C NMR spectroscopy. The in vitro antiproliferation activities of compounds 1, 5 and 6 against human hepatoma cell were evaluated and the half-maximum inhibitory concentrations were acquired.
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Affiliation(s)
- Xiaoai He
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Huichen Zhang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Xianrui Liang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P. R. China
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39
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Thornton D, Barton L, Hsu L. The development of an automated countercurrent chromatography process for isolation of anthocyanins. J Chromatogr A 2018; 1575:66-71. [DOI: 10.1016/j.chroma.2018.09.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 09/06/2018] [Accepted: 09/13/2018] [Indexed: 11/24/2022]
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40
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Khan BM, Liu Y. High speed counter current chromatography: Overview of solvent-system and elution-mode. J LIQ CHROMATOGR R T 2018. [DOI: 10.1080/10826076.2018.1499528] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Bilal Muhammad Khan
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, STU-UNIVPM Joint Algal Research Center, College of Science, Shantou University, Shantou, Guangdong, PR China
| | - Yang Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, STU-UNIVPM Joint Algal Research Center, College of Science, Shantou University, Shantou, Guangdong, PR China
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41
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Yang Z, Guo P, Han R, Gao JM. Preparative separation of flavone dimers from Dysosma versipellis by counter-current chromatography: Trifluoroacetic acid as a solvent system modifier. J Sep Sci 2018; 41:3631-3643. [PMID: 30040174 DOI: 10.1002/jssc.201800530] [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: 05/14/2018] [Revised: 07/17/2018] [Accepted: 07/18/2018] [Indexed: 11/10/2022]
Abstract
The separation of natural products is grueling and time-consuming work with repeated isolations needed to obtain purified compounds. However, using counter-current chromatography, a unique liquid-liquid partition chromatography, constituents can usually be purified efficiently. During the separation of flavone dimers from Dysosma versipellis (Hance) by counter-current chromatography, the separation resolution and sample loading was impeded by the emulsification of the sample. By screening, trifluoroacetic acid was selected as the solvent modifier to eliminate the emulsification. Then, a quaternary solvent system of hexane/ethyl acetate/methanol/water (4:6:5:5 v/v/v/v) with trifluoroacetic acid at a low concentration of 0.5% v/v was used to purify the components from D. versipellis. Compared to that without trifluoroacetic acid, the separation resolution as well as the sample loading both increased greatly. In addition, flavone dimers in low concentrations could be enriched and purified at high sample loading. As a result, five podophyllotoxins and 11 flavonoids were purified and characterized by interpretation of spectroscopic data, in which two of eight flavone dimers were new and a known flavone dimer was first separated from this species.
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Affiliation(s)
- Zhi Yang
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, P. R. China
| | - Peipei Guo
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, P. R. China
| | - Rui Han
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, P. R. China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, P. R. China
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42
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Wang Y, Zhang L, Guo X, Wu S. Salting-in counter-current chromatography separation of tanshinones based on room temperature ionic liquids. J Chromatogr A 2018; 1559:149-155. [PMID: 29305056 DOI: 10.1016/j.chroma.2017.12.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 12/22/2017] [Accepted: 12/22/2017] [Indexed: 12/17/2022]
Abstract
Ionic liquids have been widely used for the extraction and separation of bioactive natural and synthetic mixtures. In this study, we provided an updated example by using an ionic liquid-based salting-in counter-current chromatography (CCC) strategy for the separation of hydrophobic tanshinones without subsequent column chromatography purification. Several ionic liquids such as 1-allyl-3-methylimidazolium chloride ([AMIM]Cl), 1-methallyl-3-methylimidazolium chloride ([MAMIM]Cl) and 1-butyl-3-ethylimidazolium chloride [BMIM]Cl could significantly decrease the partition coefficients (K) of tanshinones in the selected two-phase solvent composed of hexane-ethyl acetate-methanol-ionic liquid aqueous solution (5:5:6:4, v/v). Typically, K values of three target tanshinones including tanshinone I, 1,2-dihydrotanshinquione and tanshinone IIA were reduced from 3.57, 4.57 and 5.50 to 1.62, 2.33 and 3.08, respectively, by the inclusion of 10% [AMIM]Cl in the solvent system. After salting-in CCC separation, the purified tanshinones were obtained only by simple ethyl acetate extraction. In general, the current results demonstrated that the ionic liquid-based salting-in CCC may be as an alternative strategy for the optimization of CCC solvent systems and separation of lipophilic natural products.
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Affiliation(s)
- Yanyan Wang
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China; Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Lihong Zhang
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Xiuyun Guo
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China
| | - Shihua Wu
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang Province, 310058, China.
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Roehrer S, Behr J, Stork V, Ramires M, Médard G, Frank O, Kleigrewe K, Hofmann T, Minceva M. Xanthohumol C, a minor bioactive hop compound: Production, purification strategies and antimicrobial test. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1095:39-49. [PMID: 30053686 DOI: 10.1016/j.jchromb.2018.07.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 06/19/2018] [Accepted: 07/15/2018] [Indexed: 12/14/2022]
Abstract
Hop has been attracting scientific attention due to its favorable bioactivity properties. It is thus desirable to relate these properties to the specific hop compounds and extract these compounds in highly purified form in order to enhance the effect. The aim of the present study is the isolation of a sufficient amount of the highly purified prenylated minor hop compound xanthohumol C (XNC) for characterizing its bioactivity. Two strategies for the production of XNC were evaluated. The first strategy involved a capture of natural XNC from a xanthohumol (XN)-enriched hop extract (XF) by countercurrent chromatography. In the second approach, a one-step semi-synthesis of XNC was performed starting from XN, which had previously been separated from a natural XN-enriched hop extract. Both methods delivered XNC in sufficient amount and purity (>95%, HPLC), whereas the second strategy was preferable in terms of purity (>99%, HPLC) as well as productivity and solvent consumption. The methods were validated by identifying and quantifying XNC using LC-MS, LC-MS/MS and 1H NMR analysis. The XNC obtained in this way was supplied to several bacterial, yeast and fungal cultures in order to evaluate its antimicrobial effects. For comparison, microorganisms were also treated with the natural XN-enriched hop extract, as well as the prenylated hop compound XN. While still reducing cell proliferation, XNC was found to be less effective than both XF and XN for all studied bacteria and yeasts. Furthermore, for Bacillus subtilis, a strongly pH-dependent minimal inhibition concentration was observed for all three bioactive compounds, lowest at a pH of 5 and highest at a pH of 7.
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Affiliation(s)
- Simon Roehrer
- Biothermodynamics, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Maximus-von-Imhof-Forum 2, 85354 Freising, Germany
| | - Juergen Behr
- Bavarian Center for Biomolecular Mass Spectrometry, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Gregor-Mendel-Strasse 4, 85354 Freising, Germany
| | - Verena Stork
- Biothermodynamics, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Maximus-von-Imhof-Forum 2, 85354 Freising, Germany
| | - Mara Ramires
- Biothermodynamics, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Maximus-von-Imhof-Forum 2, 85354 Freising, Germany
| | - Guillaume Médard
- Chair of Proteomics and Bioanalytics, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Emil-Erlenmeyer-Forum 5, 85354 Freising, Germany
| | - Oliver Frank
- Chair of Food Chemistry and Molecular Sensory Science, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Lise-Meitner-Strasse 34, 85354 Freising, Germany
| | - Karin Kleigrewe
- Bavarian Center for Biomolecular Mass Spectrometry, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Gregor-Mendel-Strasse 4, 85354 Freising, Germany
| | - Thomas Hofmann
- Chair of Food Chemistry and Molecular Sensory Science, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Lise-Meitner-Strasse 34, 85354 Freising, Germany
| | - Mirjana Minceva
- Biothermodynamics, TUM School of Life and Food Sciences Weihenstephan, Technical University of Munich, Maximus-von-Imhof-Forum 2, 85354 Freising, Germany.
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Kostanyan A, Martynova M, Erastov A, Belova V. Simultaneous concentration and separation of target compounds from multicomponent mixtures by closed-loop recycling countercurrent chromatography. J Chromatogr A 2018; 1560:26-34. [DOI: 10.1016/j.chroma.2018.05.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 12/13/2022]
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Yang Z, Guo P, Han R, Wu S, Gao JM. Gram-scale separation of borneol and camphor from Cinnamomum camphora
(L.) Presl by continuous counter-current chromatography. SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201700041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Zhi Yang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy; Northwest A&F University; Yangling Shaanxi China
| | - Peipei Guo
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy; Northwest A&F University; Yangling Shaanxi China
| | - Rui Han
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy; Northwest A&F University; Yangling Shaanxi China
| | - Shihua Wu
- Research Center of Siyuan Natural Pharmacy and Biotoxicology; College of Life Sciences Zhejiang University; Hangzhou China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy; Northwest A&F University; Yangling Shaanxi China
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Marques AM, Fingolo CE, Kaplan MAC. HSCCC separation and enantiomeric distribution of key volatile constituents of Piper claussenianum (Miq.) C. DC. (Piperaceae). Food Chem Toxicol 2017; 109:1111-1117. [PMID: 28442412 DOI: 10.1016/j.fct.2017.04.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 04/10/2017] [Accepted: 04/21/2017] [Indexed: 12/16/2022]
Abstract
High Speed Countercurrent Chromatography (HSCCC) technique was used for the preparative isolation of the major leishmanicidal compounds from the essential oils of Piper claussenianum species in Brazil. The essential oils from inflorescences of P. claussenianum were analyzed by GC-FID and GC-MS. The enantiomeric ratio of the major constituents of the P. claussenianum essential oils were determined using a Rt-DEXsm chiral capillary column by GC-FID analysis. It was found an enantiomeric excess of (+)-(E)-nerolidol in the leaves, and (+)-linalool and (+)-(E)-nerolidol in the inflorescences essential oil. The major volatile terpenes alcohols were isolated in preparative scale from inflorescences: linalool (320.0 mg) and nerolidol (95.0 mg) in high purity level. The HSCCC, a support-free liquid-liquid partition chromatographic technique, proved to be an effective and useful method for fast isolation and purification of hydrophobic and similarly structured bioactive components from essential oils of Piper species.
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Affiliation(s)
- André M Marques
- Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Pesquisas de Produtos Naturais (IPPN) Brasil, CEP: 21941-590, Rio de Janeiro, RJ, Brazil.
| | - Catharina E Fingolo
- Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Pesquisas de Produtos Naturais (IPPN) Brasil, CEP: 21941-590, Rio de Janeiro, RJ, Brazil
| | - Maria Auxiliadora C Kaplan
- Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Pesquisas de Produtos Naturais (IPPN) Brasil, CEP: 21941-590, Rio de Janeiro, RJ, Brazil
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47
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Shaheen N, Lu Y, Geng P, Shao Q, Wei Y. Isolation of four phenolic compounds from Mangifera indica L. flowers by using normal phase combined with elution extrusion two-step high speed countercurrent chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1046:211-217. [DOI: 10.1016/j.jchromb.2017.01.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 12/08/2016] [Accepted: 01/14/2017] [Indexed: 01/09/2023]
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48
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Thornton D, Yang X, Hsu L. Automated countercurrent chromatography method development and process scale-up at GlaxoSmithKline. J Chromatogr A 2017; 1487:129-138. [DOI: 10.1016/j.chroma.2017.01.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 01/12/2017] [Accepted: 01/13/2017] [Indexed: 10/20/2022]
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49
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Wang Y, Zhang L, Zhou H, Guo X, Wu S. K -targeted strategy for isolation of phenolic alkaloids of Nelumbo nucifera Gaertn by counter-current chromatography using lysine as a pH regulator. J Chromatogr A 2017; 1490:115-125. [DOI: 10.1016/j.chroma.2017.02.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 02/08/2017] [Accepted: 02/11/2017] [Indexed: 11/16/2022]
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50
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Zhang L, Wang Y, Guo X, Wu S. Concentrical coils counter-current chromatography for natural products isolation: Salvia miltiorrhiza Bunge as example. J Chromatogr A 2017; 1491:108-116. [PMID: 28259459 DOI: 10.1016/j.chroma.2017.02.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/10/2017] [Accepted: 02/20/2017] [Indexed: 12/01/2022]
Abstract
Countercurrent chromatography (CCC) is an efficient separation technique without the solid support matrix, largely depending on the partition of two-immiscible liquid phases in the separation column. Since the helical coil planet centrifuge was invented in early 1970s by Yoichiro Ito, a series of coils columns, including spiral coils and conical coils columns have been developed for CCC separation. In this work, we introduced a new simple and efficient concentrical coils column for CCC separation, which was prepared by winding the whole polytetrafluoroethylene (PTFE) tube into the circular grooves from the rotation axis in the same direction. Once the PTFE tube filled in all space of one round of the circular groove, it was jumped into the nearby outer circular groove through the gap and until the whole groove was filled. The three same concentrical coils distributed on three disc-shaped holders were connected by the same PTFE tube to form concentrical coils separation column. The separation capacity was further investigated using ten tanshinones of the extracts of a Traditional Chinese Medicine Salvia miltiorrhiza Bunge as a model natural product. All results indicated that the concentrical coils column could hold satisfactory retention of the stationary phase, higher theoretical plate number and better resolution for CCC separation of more than ten tanshinones. It may be an alternative CCC column for non-targeted and targeted isolation of bioactive natural products.
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Affiliation(s)
- Lihong Zhang
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yanyan Wang
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xiuyun Guo
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Shihua Wu
- Research Center of Siyuan Natural Pharmacy and Biotoxicology, College of Life Sciences, Zhejiang University, Hangzhou 310058, China.
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