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Wang L, Tong W, Antonucci V, Helmy R, Truong V. Highly sensitive LC-MS method for stereochemical quality control of a pharmaceutical drug substance intermediate. Chirality 2022; 34:856-863. [PMID: 35297107 DOI: 10.1002/chir.23435] [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: 10/18/2021] [Revised: 02/13/2022] [Accepted: 02/22/2022] [Indexed: 11/11/2022]
Abstract
Stereochemical quality control for pharmaceutical drug substance intermediates is a daunting task, especially considering the need to separate multiple stereoisomers simultaneously with low ppm level sensitivity. To address these challenges, we have successfully implemented chiral column screening, and developed an ultrasensitive liquid chromatography-mass spectrometry (LC-MS) method to separate four stereoisomers including the API intermediate, its enantiomer, and two other diastereomers. Parameters such as mobile phase additives, MS fragmentor, and column temperature were optimized to achieve the desired selectivity and sensitivity. The method enabled stereoisomer detection with high sensitivity (2 ppm LOD and 5 ppm LOQ), good linearity, and desired spike recovery, and it has been successfully applied for stereoisomer quantitation in multiple large-scale batches and demonstrated chiral quality control of the drug substance intermediate.
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Affiliation(s)
- Lin Wang
- Small Molecule Analytical Research and Development, Merck & Co., Inc, Rahway, New Jersey, USA
| | - Weidong Tong
- Small Molecule Analytical Research and Development, Merck & Co., Inc, Rahway, New Jersey, USA
| | - Vincent Antonucci
- Small Molecule Analytical Research and Development, Merck & Co., Inc, Rahway, New Jersey, USA
| | - Roy Helmy
- Small Molecule Analytical Research and Development, Merck & Co., Inc, Rahway, New Jersey, USA
| | - Van Truong
- Small Molecule Analytical Research and Development, Merck & Co., Inc, Rahway, New Jersey, USA
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2
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Álvarez-Fernández García R, Corte-Rodríguez M, Macke M, LeBlanc KL, Mester Z, Montes-Bayón M, Bettmer J. Addressing the presence of biogenic selenium nanoparticles in yeast cells: analytical strategies based on ICP-TQ-MS. Analyst 2020; 145:1457-1465. [DOI: 10.1039/c9an01565e] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complementary analytical strategies based on ICP-TQ-MS were used for the detection and characterization of selenium-containing nanoparticles in selenized yeast.
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Affiliation(s)
| | - M. Corte-Rodríguez
- University of Oviedo
- Faculty of Chemistry
- Dept. of Physical and Analytical Chemistry
- E-33006 Oviedo
- Spain
| | - M. Macke
- University of Münster
- Institute of Inorganic and Analytical Chemistry
- D-48149 Münster
- Germany
| | | | - Z. Mester
- National Research Council Canada
- Ottawa
- Canada
| | - M. Montes-Bayón
- University of Oviedo
- Faculty of Chemistry
- Dept. of Physical and Analytical Chemistry
- E-33006 Oviedo
- Spain
| | - J. Bettmer
- University of Oviedo
- Faculty of Chemistry
- Dept. of Physical and Analytical Chemistry
- E-33006 Oviedo
- Spain
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3
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Montone CM, Antonelli M, Capriotti AL, Cavaliere C, Barbera G, Piovesana S, Laganà A. Investigation of free and conjugated seleno‐amino acids in wheat bran by hydrophilic interaction liquid chromatography with tandem mass spectrometry. J Sep Sci 2019; 42:1938-1947. [DOI: 10.1002/jssc.201900047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/12/2019] [Accepted: 03/18/2019] [Indexed: 12/14/2022]
Affiliation(s)
| | | | | | | | - Giorgia Barbera
- Dipartimento di ChimicaSapienza Università di Roma Rome Italy
| | - Susy Piovesana
- Dipartimento di ChimicaSapienza Università di Roma Rome Italy
| | - Aldo Laganà
- Dipartimento di ChimicaSapienza Università di Roma Rome Italy
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4
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Piovesana S, Montone CM, Antonelli M, Cavaliere C, La Barbera G, Canepari S, Samperi R, Laganà A, Capriotti AL. Investigation of free seleno-amino acids in extra-virgin olive oil by mixed mode solid phase extraction cleanup and enantioselective hydrophilic interaction liquid chromatography-tandem mass spectrometry. Food Chem 2019; 278:17-25. [DOI: 10.1016/j.foodchem.2018.11.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/05/2018] [Accepted: 11/09/2018] [Indexed: 11/15/2022]
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5
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Capriotti AL, Montone CM, Antonelli M, Cavaliere C, Gasparrini F, La Barbera G, Piovesana S, Laganà A. Simultaneous Preconcentration, Identification, and Quantitation of Selenoamino Acids in Oils by Enantioselective High Performance Liquid Chromatography and Mass Spectrometry. Anal Chem 2018; 90:8326-8330. [DOI: 10.1021/acs.analchem.8b02089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Bakirdere S, Volkan M, Ataman OY. Speciation of Selenium in Supplements by High Performance Liquid Chromatography-Inductively Coupled Plasma-Mass Spectrometry. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.986679] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Chen B, He M, Zhong C, Hu B. Chiral speciation of selenoamino acids in biological samples. J Chromatogr A 2014; 1363:62-70. [DOI: 10.1016/j.chroma.2014.07.098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 07/26/2014] [Accepted: 07/29/2014] [Indexed: 10/24/2022]
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8
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Fabrication and characterization of novel tentacle-type adsorbent for resolution of chiral drugs. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5782-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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9
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Bhushan R, Nagar H. Indirect enantioseparation of selenomethionine by reversed-phase high-performance liquid chromatography using a newly synthesized chiral derivatizing reagent based on (S)-naproxen moiety. Biomed Chromatogr 2013; 28:106-11. [DOI: 10.1002/bmc.2903] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Accepted: 02/14/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Ravi Bhushan
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee 247667 India
| | - Hariom Nagar
- Department of Chemistry; Indian Institute of Technology Roorkee; Roorkee 247667 India
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10
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Duan J, He M, Hu B. Chiral speciation and determination of selenomethionine enantiomers in selenized yeast by ligand-exchange micellar electrokinetic capillary chromatography after solid phase extraction. J Chromatogr A 2012; 1268:173-9. [DOI: 10.1016/j.chroma.2012.10.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 09/28/2012] [Accepted: 10/01/2012] [Indexed: 10/27/2022]
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11
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Meermann B, Sperling M. Hyphenated techniques as tools for speciation analysis of metal-based pharmaceuticals: developments and applications. Anal Bioanal Chem 2012; 403:1501-22. [DOI: 10.1007/s00216-012-5915-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 02/28/2012] [Accepted: 02/28/2012] [Indexed: 10/28/2022]
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12
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Effect of sample preparation methods on the D,L-enantiomer ratio of extracted selenomethionine. Anal Bioanal Chem 2011; 401:373-80. [PMID: 21603917 DOI: 10.1007/s00216-011-5077-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 04/29/2011] [Accepted: 04/29/2011] [Indexed: 10/18/2022]
Abstract
Effects of the two most widespread sample preparation techniques on the D,L-enantiomer ratio of extracted selenomethionine were monitored through the analysis of the certified reference material selenium-enriched yeast and the isolated protein fraction of high selenium monkeypot nut. The extracted selenomethionine (SeMet) fractions were orthogonally cleaned up with anion exchange chromatography before carrying out the enantiomer-specific detection to increase the robustness and the efficiency of the subsequent o-phthal-aldehyde and n-isobutyril-cysteine-based derivatisation process and reversed phase-high-performance liquid chromatography-inductively coupled plasma mass spectroscopy (ICP-MS) detection. The two techniques, namely methanesulphonic acid (MSA) based digestion and proteolytic digestion with protease XIV, resulted in significantly different ratio of D,L-selenomethionine with the final results of 2.2-2.7% and 0.5-0.6% of D-SeMet, respectively. The study revealed significant differences in the ICP-MS-related sensitivity of the derivatised selenomethionine enantiomers, which calls attention to the quantification of this selenoamino acid after MSA hydrolysis.
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Xiao Y, Tan TTY, Ng SC. Enantioseparation of dansyl amino acids by ultra-high pressure liquid chromatography using cationic β-cyclodextrins as chiral additives. Analyst 2011; 136:1433-9. [DOI: 10.1039/c0an00631a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Qi L, Yang G. Enantioseparation of dansyl amino acids by ligand-exchange capillary electrophoresis with zinc(II)-L
-phenylalaninamide complex. J Sep Sci 2009; 32:3209-14. [DOI: 10.1002/jssc.200900328] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Zhou Y, Nagaoka T, Yu B, Levon K. Chiral Ligand Exchange Potentiometric Aspartic Acid Sensors with Polysiloxane Films Containing a Chiral Ligand N-Carbobenzoxy-Aspartic Acid. Anal Chem 2009; 81:1888-92. [DOI: 10.1021/ac801751n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanxiu Zhou
- Department of Applied Chemistry, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Polymer Research Institute, Polytechnic Institute of New York University, Six Metrotech Center, Brooklyn, New York 11201-3840
| | - Tsutomu Nagaoka
- Department of Applied Chemistry, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Polymer Research Institute, Polytechnic Institute of New York University, Six Metrotech Center, Brooklyn, New York 11201-3840
| | - Bin Yu
- Department of Applied Chemistry, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Polymer Research Institute, Polytechnic Institute of New York University, Six Metrotech Center, Brooklyn, New York 11201-3840
| | - Kalle Levon
- Department of Applied Chemistry, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan, and Polymer Research Institute, Polytechnic Institute of New York University, Six Metrotech Center, Brooklyn, New York 11201-3840
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16
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Mayani VJ, Abdi S, Kureshy R, Khan N, Agrawal S, Jasra R. Synthesis and characterization of mesoporous silica modified with chiral auxiliaries for their potential application as chiral stationary phase. J Chromatogr A 2008; 1191:223-30. [DOI: 10.1016/j.chroma.2008.02.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2007] [Revised: 02/07/2008] [Accepted: 02/13/2008] [Indexed: 11/17/2022]
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17
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Wang T. Liquid Chromatography–Inductively Coupled Plasma Mass Spectrometry (LC–ICP–MS). J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070701191094] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Tiebang Wang
- a Process Research & Development , Merck Research Laboratories , Rahway , New Jersey , USA
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18
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Gómez-Ariza JL, Bernal-Daza V, Villegas-Portero MJ. First approach of a methodological set-up for selenomethionine chiral speciation in breast and formula milk using high-performance liquid chromatography coupled to atomic fluorescence spectroscopy. Appl Organomet Chem 2007. [DOI: 10.1002/aoc.1239] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Abstract
This paper deals with determination of selenium and analysis of its speciation in some Italian mineral waters. Selenium was determined by differential pulse cathodic stripping voltammetry (DPCSV) even if square wave cathodic stripping voltammetry (SWCSV) was also taken into consideration. The selenium determined in the mineral waters here investigated is not over 600 ng L(-1); in three samples, it was found below the detection limit. Analysis of speciation revealed that Se(VI) is the highly prevailing form present: only two of the examined samples revealed a detectable amount (few ng L(-1)) of Se(IV). DPCSV made possible to detect, in two of the samples, the presence of a specie(s) able to interact with Se(IV). The apparent interaction constant for the adduct formation was evaluated and the species concentration determined. However, the nature of such compound(s) remains unknown.
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Affiliation(s)
- Tommaso Ferri
- Dipartimento di Chimica Università di Roma La Sapienza, P.e Aldo Moro, 5 00185 Roma, Italy.
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20
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Mayani VJ, Abdi SHR, Kureshy RI, Khan NH, Agrawal S, Jasra RV. Synthesis and characterization of (S)-amino alcohol modified M41S as effective material for the enantioseparation of racemic compounds. J Chromatogr A 2006; 1135:186-93. [PMID: 17055521 DOI: 10.1016/j.chroma.2006.09.094] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2006] [Revised: 09/16/2006] [Accepted: 09/18/2006] [Indexed: 11/25/2022]
Abstract
A new chiral stationary phase (CSP) was synthesized based on (S)-1-anilino-3-propyl-2-propanol covalently bonded to the mesoporous semi-crystalline material M41S. Direct semipreparative enantioseparation of mandelic acid could be achieved using medium pressure chromatography. Partly separated could also be the enantiomers of 2,2'-dihydroxy-1,1'-binaphthalene, cyanochromene oxide, diethyl tartrate and 2-phenyl propionic acid. The characterization of CSP was accomplished by microanalysis, cross polarized magic angle spinning (CP-MAS) 13C NMR, powder X-ray diffraction (XRD), FTIR, thermo-gravimetric analysis (TGA), N2 adsorption-desorption isotherm, scanning electron microscopy (SEM) and solid reflectance UV-vis spectroscopy. Furthermore the stability of CSP was satisfactory as it could withstand three washing and reuse experiments of enantioseparation of mandelic acid without loss in its performance.
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Affiliation(s)
- Vishal J Mayani
- Silicates and Catalysis Discipline, Central Salt and Marine Chemicals Research Institute (CSMCRI), Bhavnagar 364002, Gujarat, India
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21
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B'Hymer C, Caruso JA. Selenium speciation analysis using inductively coupled plasma-mass spectrometry. J Chromatogr A 2006; 1114:1-20. [PMID: 16551466 DOI: 10.1016/j.chroma.2006.02.063] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2005] [Revised: 02/14/2006] [Accepted: 02/21/2006] [Indexed: 10/24/2022]
Abstract
Selenium exists in several oxidation states and a variety of inorganic and organic compounds, and the chemistry of selenium is complex in both the environment and living systems. Selenium is an essential element at trace levels and toxic at greater levels. Interest in speciation analysis for selenium has grown rapidly in this last decade, especially in the use of chromatographic separation coupled with inductively coupled plasma-mass spectrometry (ICP-MS). Complete characterization of selenium compounds is necessary to understand selenium's significance in metabolic processes, clinical chemistry, biology, toxicology, nutrition and the environment. This review describes some of the essential background of selenium, and more importantly, some of the currently used separation methodologies, both chromatographic and electrophoretic, with emphasis on applications of selenium speciation analysis using ICP-MS detection.
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Affiliation(s)
- C B'Hymer
- Department of Chemistry, University of Cincinnati, Mail location 0172, Cincinnati, OH 45221-0172, USA
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22
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Determination of selenium species in plant leaves by HPLC–UV–HG-AFS. Talanta 2006; 68:558-68. [DOI: 10.1016/j.talanta.2005.04.056] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2004] [Revised: 03/17/2005] [Accepted: 04/27/2005] [Indexed: 11/22/2022]
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23
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Wang J, Mannino S, Camera C, Chatrathi MP, Scampicchio M, Zima J. Microchip capillary electrophoresis with amperometric detection for rapid separation and detection of seleno amino acids. J Chromatogr A 2005; 1091:177-82. [PMID: 16395808 DOI: 10.1016/j.chroma.2005.07.055] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This article describes an effective microchip capillary-electrophoresis protocol for rapid and effective measurements of food-related seleno amino acids, including Se-methionine (Se-Met), Se-ethionine (Se-Eth), Se-methyl cysteine (Se-Cys), utilizing o-phtaldialdeyde/2-mercaptoethanol (OPA/2-ME) derivatization. Relevant parameters of the chip separation and amperometric detection are examined and optimized using a response surface methodology (RSM). Under optimum conditions, the analytes could be separated and detected in a 30 mM borate buffer (pH 9.3, with 28 mM sodium dodecul sulfate) within 300 s using a separation voltage of 2000V and a detection voltage of +0.9 V. Linear calibration plots are observed for micromolar concentrations of the Se-amino acid compounds. The negligible sample volumes used in the microchip procedure obviates surface fouling common to amperometric measurements of selenoamino-acid compounds. The new microchip protocol offers great promise for a wide range of food applications requiring fast measurements and negligible sample consumption.
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Affiliation(s)
- Joseph Wang
- Departments of Chemical and Materials Engineering and Chemistry and Biochemistry, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA.
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Kuehnelt D, Kienzl N, Traar P, Le NH, Francesconi KA, Ochi T. Selenium metabolites in human urine after ingestion of selenite, L-selenomethionine, or DL-selenomethionine: a quantitative case study by HPLC/ICPMS. Anal Bioanal Chem 2005; 383:235-46. [PMID: 16132136 DOI: 10.1007/s00216-005-0007-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2005] [Revised: 06/30/2005] [Accepted: 07/02/2005] [Indexed: 11/26/2022]
Abstract
To obtain quantitative information on human metabolism of selenium, we have performed selenium speciation analysis by HPLC/ICPMS on samples of human urine from one volunteer over a 48-hour period after ingestion of selenium (1.0 mg) as sodium selenite, L-selenomethionine, or DL-selenomethionine. The three separate experiments were performed in duplicate. Normal background urine from the volunteer contained total selenium concentrations of 8-30 microg Se/L (n=22) but, depending on the chromatographic conditions, only about 30-70% could be quantified by HPLC/ICPMS. The major species in background urine were two selenosugars, namely methyl-2-acetamido-2-deoxy-1-seleno-beta-D-galactopyranoside (selenosugar 1) and its deacylated analog methyl-2-amino-2-deoxy-1-seleno-beta-D-galactopyranoside (selenosugar 3). Selenium was rapidly excreted after ingestion of the selenium compounds: the peak concentrations (approximately 250-400 microg Se/L, normalized concentrations) were recorded within 5-9 hours, and concentrations had returned to close to background levels within 48 hours, by which time 25-40% of the ingested selenium, depending on the species ingested, had been accounted for in the urine. In all experiments, the major metabolite was selenosugar 1, constituting either approximately 80% of the total selenium excreted over the first 24 hours after ingestion of selenite or L-selenomethionine or approximately 65% after ingestion of DL-selenomethionine. Selenite was not present at significant levels (<1 microg Se/L) in any of the samples; selenomethionine was present in only trace amounts (approximately 1 microg/L, equivalent to less than 0.5% of the total Se) following ingestion of L-selenomethionine, but it constituted about 20% of the excreted selenium (first 24 hours) after ingestion of DL-selenomethionine, presumably because the D form was not efficiently metabolized. Trimethylselenonium ion, a commonly reported urine metabolite, could not be detected (<1 microg/L) in the urine samples after ingestion of selenite or selenomethionine. Cytotoxicity studies on selenosugar 1 and its glucosamine isomer (selenosugar 2, methyl-2-acetamido-2-deoxy-1-seleno-beta-D-glucosopyranoside) were performed with HepG2 cells derived from human hepatocarcinoma, and these showed that both compounds had low toxicity (about 1000-fold less toxic than sodium selenite). The results support earlier studies showing that selenosugar 1 is the major urinary metabolite after increased selenium intake, and they suggest that previously accepted pathways for human metabolism of selenium involving trimethylselenonium ion as the excretionary end product may need to be re-evaluated.
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Affiliation(s)
- Doris Kuehnelt
- Institute of Chemistry-Analytical Chemistry, Karl-Franzens University Graz, Universitaetsplatz 1, 8010, Graz, Austria
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25
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Viñas P, López-García I, Merino-Meroño B, Campillo N, Hernández-Córdoba M. Determination of selenium species in infant formulas and dietetic supplements using liquid chromatography–hydride generation atomic fluorescence spectrometry. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.11.068] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Phinney KW. Enantioselective separations by packed column subcritical and supercritical fluid chromatography. Anal Bioanal Chem 2005; 382:639-45. [PMID: 15717170 DOI: 10.1007/s00216-005-3074-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2004] [Revised: 12/30/2004] [Accepted: 01/10/2005] [Indexed: 10/25/2022]
Abstract
Enantioselective separations have been one of the most successful applications of supercritical fluid chromatography (SFC). Although analytical scale separations have dominated the literature, the use of SFC for preparative chiral separations is growing. Both analytical and preparative scale SFC separations seek to take advantage of the high efficiency, high throughput, and rapid method development associated with the technique. This review will cover recent developments in the application of SFC to enantioseparations.
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Affiliation(s)
- Karen W Phinney
- Analytical Chemistry Division, Chemical Science and Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899-8392, USA.
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27
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Huang X, Wang J, Wang Q, Huang B. Chiral Speciation and Determination of DL-Selenomethionine Enantiomers on a Novel Chiral Ligand-Exchange Stationary Phase. ANAL SCI 2005; 21:253-7. [PMID: 15790108 DOI: 10.2116/analsci.21.253] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A new type of chiral ligand-exchange stationary phase (CLES) was successfully synthesized by treating silica gel with beta-(3,4-epoxycyclohexyl)ethyltrimethoxy silane and opening the epoxy ring by L-isoleucine. The chiral speciation of DL-selenomethionine (DL-SeMet) by high-performance liquid chromatography (HPLC) with UV absorbance on the CLES column was studied. The influences of the contents of copper ion and methanol as well as the pH value in the mobile phase and temperature of the column on the efficiency of resolution of DL-SeMet were investigated in detail. DL-SeMet could be completely resolved within 40 min under the optimal operating conditions of 0.1 mmol/L Cu2+ at 0.05 mol/L KH2PO4 buffer (pH = 5.5) and 35 degrees C temperature of the column. The limits of detection of D- and L-SeMet were 255 ppb and 286 ppb, respectively. This method was applied to determine the D- and L-enantiomers of DL-SeMet in real samples, such as selenized yeast powder and garlic.
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Affiliation(s)
- Xiaojia Huang
- Department of Chemistry, MOE Key Laboratory of Analytical Sciences, Xiamen University, Xiamen 361005, China.
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28
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Study of selenium species distribution in biological tissues by size exclusion and ion exchange chromatagraphy inductively coupled plasma–mass spectrometry. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.02.029] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Enzymatic digestion and ultrasonication: a powerful combination in analytical chemistry. Trends Analyt Chem 2004. [DOI: 10.1016/j.trac.2004.06.007] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ferri T, Coccioli F, De Luca C, Callegari C, Morabito R. Distribution and speciation of selenium in Lecythis ollaria plant. Microchem J 2004. [DOI: 10.1016/j.microc.2004.06.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Uden PC, Boakye HT, Kahakachchi C, Tyson JF. Selective detection and identification of Se containing compounds—review and recent developments. J Chromatogr A 2004; 1050:85-93. [PMID: 15503929 DOI: 10.1016/j.chroma.2004.05.077] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The complexity of selenium (Se) chemistry in the environment and in living organisms presents broad analytical challenges. The selective qualitative and quantitative determination of particular species of this element is vital in order to understand selenium's metabolism and significance in biology, toxicology, clinical chemistry and nutrition. This calls for state-of-the-art analytical techniques such as hyphenated methods that are reviewed with particular emphasis on interfaced separation with element-selective detection and identification of the detected selenium compounds. Atomic spectral element specific detection for monitoring chromatographic eluent enabled quantitative determination of selenium species in selenized yeast and qualitative measurement for breath samples. Gas chromatography with atomic emission detection (AED) of ethylated species and fluoroacid ion pair HPLC applied to the analysis of currently produced or archived selenized yeast and Brassica juncea have revealed the presence of a previously unrecognised Se-S amino acid, S-(methylseleno)cysteine.
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Affiliation(s)
- Peter C Uden
- Department of Chemistry, University of Massachusetts, Lederle Graduate Research Tower A 701, Amherst, MA 01003-9336, USA.
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Gómez-Ariza J, Bernal-Daza V, Villegas-Portero M. Comparative study of the instrumental couplings of high performance liquid chromatography with microwave-assisted digestion hydride generation atomic fluorescence spectrometry and inductively coupled plasma mass spectrometry for chiral speciation of selenomethionine in breast and formula milk. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.04.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Caruso JA, Montes-Bayon M. Elemental speciation studies--new directions for trace metal analysis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2003; 56:148-163. [PMID: 12915148 DOI: 10.1016/s0147-6513(03)00058-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Elemental speciation is reviewed as a new approach to trace metals analysis. The importance of metal speciation relative to total metal analysis is considered. Various types of chromatographic separation methods using inductively coupled plasma-mass spectrometry (ICP-MS) detection are discussed. A brief introduction to the instrumental techniques is given, as well a discussion of coupling the instrumentation. Various chromatographies are included with an emphasis on liquid chromatography (LC). Gas chromatography (GC) and capillary electrophoresis (CE) are also discussed. Application examples contrast and compare the advantages and disadvantages of ICP- MS with other detection methods. Summary tables are included for two of the LC methods.
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Affiliation(s)
- Joseph A Caruso
- Department of Chemistry, A&S Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, OH 45221-0172, USA.
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Michalke B. Element speciation definitions, analytical methodology, and some examples. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2003; 56:122-139. [PMID: 12915146 DOI: 10.1016/s0147-6513(03)00056-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper gives definitions related to element speciation and the reasons for the need for speciation. The problems focused on, involve sampling, sample preparation and storage, as well as changes in species information that occur during the use of various separation technologies. However, the potential and advantages of the separation methods in element speciation are also discussed. In addition, problems arising during element detection that are attributable to analytes or mobile-phase composition are outlined, as well as the pronounced advantages of detection by inductively coupled plasma-mass spectrometry (ICP-MS). The combination of the various separation systems with element- or molecule-specific detectors creates problems especially in element speciation. These difficulties are described along with recent developments for overcoming them or for improving their coupling efficiency. Finally, several elements for which the issue of speciation is important are discussed, with examples from some recent publications on arsenic, selenium and iodine speciation.
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Affiliation(s)
- Bernhard Michalke
- GSF National Research Center for Environment and Health, Ingolstaedter Landstr. 1, 85764 Neuherberg, Germany.
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Montes-Bayón M, DeNicola K, Caruso JA. Liquid chromatography-inductively coupled plasma mass spectrometry. J Chromatogr A 2003; 1000:457-76. [PMID: 12877184 DOI: 10.1016/s0021-9673(03)00527-2] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
It is known that while many elements are considered essential to human health, many others can be toxic. However, because the intake, accumulation, transport, storage and interaction of these different metals and metalloids in nature is strongly influenced by their specific elemental form, complete characterization of the element is essential when assessing its benefits and/or risk. Consequently, interest has grown rapidly in determining oxidation state, chemical ligand association, and complex forms of a many different elements. Elemental speciation, or the analyses that lead to determining the distribution of an element's particular chemical species in a sample, typically involves the coupling of a separation technique and an element specific detector. A large number of methods have been developed which utilize a multitude of different separation mechanisms and detection instruments. Yet, because of its versatility, robustness, sensitivity and multi-elemental capabilities, the coupling of liquid chromatography to inductively coupled plasma mass spectrometry (LC-ICP-MS) has become one of the most popular techniques for elemental speciation studies. This review focuses on the basic principles of LC-ICP-MS, its historical development and the many ways in which this technique can be applied. Different liquid chromatography separations are discussed as well as the factors that must be considered when coupling each to ICP-MS. Recent applications of LC-ICP-MS to the speciation of environmental, biological and clinical samples are also presented.
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Affiliation(s)
- María Montes-Bayón
- Department of Analytical Chemistry, University of Oviedo, Julian Claveria 8, 33006 Oviedo, Spain
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B'Hymer C, Montes-Bayon M, Caruso JA. Marfey's reagent: Past, present, and future uses of 1-fluoro-2,4-dinitrophenyl-5-L-alanine amide. J Sep Sci 2003. [DOI: 10.1002/jssc.200390019] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sanz-Medel A, Blanco-González E. Chiral trace-element speciation in biological samples: present importance and application to speciation for seleno-amino acids. Trends Analyt Chem 2002. [DOI: 10.1016/s0165-9936(02)01114-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ochsenkühn-Petropoulou M, Tsopelas F. Speciation analysis of selenium using voltammetric techniques. Anal Chim Acta 2002. [DOI: 10.1016/s0003-2670(02)00091-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ponce de León CA, Bayón MM, Paquin C, Caruso JA. Selenium incorporation into Saccharomyces cerevisiae cells: a study of different incorporation methods. J Appl Microbiol 2002; 92:602-10. [PMID: 11966899 DOI: 10.1046/j.1365-2672.2002.01562.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS To study the effects of the selenium enrichment protocols in yeast at various points in the cell cycle, total selenium accumulation and the forms of selenium incorporated. METHODS AND RESULTS The use of selenized yeast as enriched selenium supplements in human nutrition has become a topic of increasing interest over the last decade. Four enrichment procedures have been evaluated using sodium selenite as the selenium source: enrichment during the growth phase; enrichment at the non-growth phase, both of these at different selenium levels; enrichment by seeding in a fermentable carbon source (glucose); Se-enrichment with a non-fermentable carbon source (glycerol). A nitric acid digestion of the yeast samples prepared under different conditions has been performed in order to evaluate the total selenium incorporated into the yeast cells. Also, an enzymatic digestion of the yeast samples with pepsin has been carried out as an initial step to begin the process of determining which of the different possible selenium species are formed. The cell count evaluations of the selenium-enriched yeast showed that the growth phase, seeding and the use of YEPG media is influenced by the addition of Se, while the non-growth phase is not. Total selenium incorporation studies showed that seeding the yeast permits more accumulation of selenium. Speciation studies of the enriched yeast showed that the growth phase increases the formation of L-Se-methionine. CONCLUSIONS When the aim of enriching yeast with selenium is the formation of L-Se-methionine, the best enrichment procedure is using the growth phase with small concentrations of sodium selenite. SIGNIFICANCE AND IMPACT OF THE STUDY The use of selenium supplements is widespread and most of the supplements use selenium-enriched yeast in their formulation. Studies made on supplements do not have the appropriate Se-species for optimal absorption in the human body. This study presents and compares methods for the best selenium yeast enrichment that could ultimately be used in selenium supplement formulations.
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Michalke B. The coupling of LC to ICP-MS in element speciation – Part II: Recent trends in application. Trends Analyt Chem 2002. [DOI: 10.1016/s0165-9936(02)00303-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ipolyi I, Stefánka Z, Fodor P. Speciation of Se(IV) and the selenoamino acids by high-performance liquid chromatography–direct hydride generation–atomic fluorescence spectrometry. Anal Chim Acta 2001. [DOI: 10.1016/s0003-2670(01)00868-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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