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Meunier M, Bréard D, Awang K, Boisard S, Guilet D, Richomme P, Derbré S, Schinkovitz A. Matrix free laser desorption ionization assisted by 13C NMR dereplication: A complementary approach to LC-MS2 based chemometrics. Talanta 2023. [DOI: 10.1016/j.talanta.2022.123998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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A thorough evaluation of matrix-free laser desorption ionization on structurally diverse alkaloids and their direct detection in plant extracts. Anal Bioanal Chem 2020; 412:7405-7416. [PMID: 32851457 DOI: 10.1007/s00216-020-02872-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/16/2020] [Accepted: 08/07/2020] [Indexed: 12/24/2022]
Abstract
Alkaloids represent a major group of natural products (NPs), derived from highly diverse organisms. These structurally varied specialized metabolites are widely used for medicinal purposes and also known as toxic contaminants in agriculture and dietary supplements. While the detection of alkaloids is generally facilitated by GC- or LC-MS, these techniques do require considerable efforts in sample preparation and method optimization. Bypassing these limitations and also reducing experimental time, matrix-free laser desorption ionization (LDI) and related methods may provide an interesting alternative. As many alkaloids show close structural similarities to matrices used in matrix-assisted laser desorption ionization (MALDI), they should ionize upon simple laser irradiation without matrix support. With this in mind, the current work presents a systematic evaluation of LDI properties of a wide range of structurally diverse alkaloids. Facilitating a direct comparison between LDI and ESI-MS fragmentation, all tested compounds were further studied by electrospray ionization (ESI). Moreover, crude plant extracts of Atropa belladonna, Cinchona succirubra, and Colchicum autumnale were analyzed by LDI in order to evaluate direct alkaloid detection and dereplication from complex mixtures. Finally, dose-dependent evaluation of MALDI and LDI detection using an extract of Rosmarinus officinalis spiked with atropine, colchicine, or quinine was conducted. Overall, present results suggest that LDI provides a versatile analytical tool for analyzing structurally diverse alkaloids as single compounds and from complex mixtures. It may further serve various potential applications ranging from quality control to the screening for toxic compounds as well as the build up of MS databases. Graphical abstract.
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Bruguière A, Derbré S, Dietsch J, Leguy J, Rahier V, Pottier Q, Bréard D, Suor-Cherer S, Viault G, Le Ray AM, Saubion F, Richomme P. MixONat, a Software for the Dereplication of Mixtures Based on 13C NMR Spectroscopy. Anal Chem 2020; 92:8793-8801. [DOI: 10.1021/acs.analchem.0c00193] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Antoine Bruguière
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
| | - Séverine Derbré
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
| | - Joël Dietsch
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
- JEOL Europe SAS, 1 Allée de Giverny, 78290 Croissy-sur-Seine, France
| | - Jules Leguy
- LERIA, EA2645, UNIV Angers, SFR MathSTIC, Faculty of Sciences, 2 boulevard Lavoisier, 49045 Angers cedex 01, France
| | - Valentine Rahier
- LERIA, EA2645, UNIV Angers, SFR MathSTIC, Faculty of Sciences, 2 boulevard Lavoisier, 49045 Angers cedex 01, France
| | - Quentin Pottier
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
| | - Dimitri Bréard
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
| | - Sorphon Suor-Cherer
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
| | - Guillaume Viault
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
| | - Anne-Marie Le Ray
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
| | - Frédéric Saubion
- LERIA, EA2645, UNIV Angers, SFR MathSTIC, Faculty of Sciences, 2 boulevard Lavoisier, 49045 Angers cedex 01, France
| | - Pascal Richomme
- SONAS, EA921, UNIV Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy, 16 Bd Daviers, 49045 Angers cedex 01, France
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Skopikova M, Hashimoto M, Richomme P, Schinkovitz A. Matrix-Free Laser Desorption Ionization Mass Spectrometry as an Efficient Tool for the Rapid Detection of Opiates in Crude Extracts of Papaver somniferum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:884-891. [PMID: 31825610 DOI: 10.1021/acs.jafc.9b05153] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Having a long history of traditional medicinal applications, Papaver somniferum is also known as a source of various pharmacologically highly active opiates. Consequently, their detection from plant extracts is an important analytical task and generally addressed by methods of GC-MS and LC-MS. However, opiates do also show structural similarities to matrix molecules used in matrix-assisted laser desorption ionization (LDI) and may therefore ionize upon simple laser irradiation. Following this analytical approach, the present work thoroughly evaluated the direct detection of opiates by matrix-free LDI in crude extracts of P. somniferum. The method facilitated the identification of 10 reported opiates by their molecular formulas without any chromatographic prepurification. Moreover, a principal component analysis based on LDI-MS data permitted the correct grouping of all extracts according to their inherent chemistry. Concluding experiments on serial dilutions of thebaine further evaluated potential quantitative applications of the method. Overall results highlight the promising potential of LDI-MS for the swift detection of opiates in complex mixtures.
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Affiliation(s)
- Michaela Skopikova
- SONAS, EA921, University of Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy , 16 Bd Daviers , 49045 Angers Cedex 01, France
| | | | - Pascal Richomme
- SONAS, EA921, University of Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy , 16 Bd Daviers , 49045 Angers Cedex 01, France
| | - Andreas Schinkovitz
- SONAS, EA921, University of Angers, SFR QUASAV, Faculty of Health Sciences, Department of Pharmacy , 16 Bd Daviers , 49045 Angers Cedex 01, France
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Bruguière A, Derbré S, Coste C, Le Bot M, Siegler B, Leong ST, Sulaiman SN, Awang K, Richomme P. 13C-NMR dereplication of Garcinia extracts: Predicted chemical shifts as reliable databases. Fitoterapia 2018; 131:59-64. [PMID: 30321650 DOI: 10.1016/j.fitote.2018.10.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/25/2018] [Accepted: 10/01/2018] [Indexed: 12/18/2022]
Abstract
Usually isolated from Garcinia (Clusiaceae) or Hypericum (Hypericaceae) species, some Polycyclic Polyprenylated AcylPhloroglucinols (PPAPs) have been recently reported as potential research tools for immunotherapy. Aiming at exploring the chemodiversity of PPAPs amongst Garcinia genus, a dereplication process suitable for such natural compounds has been developed. Although less sensitive than mass spectrometry, NMR spectroscopy is perfectly reproducible and allows stereoisomers distinction, justifying the development of 13C-NMR strategies. Dereplication requires the use of databases (DBs). To define if predicted DBs were accurate enough as dereplication tools, experimental and predicted δC of natural products usually isolated from Clusiaceae were compared. The ACD/Labs commercial software allowed to predict 73% of δC in a 1.25 ppm range around the experimental values. Consequently, with these parameters, the major PPAPs from a Garcinia bancana extract were successfully identified using a predicted DB.
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Affiliation(s)
| | | | - Chloé Coste
- SONAS SFR QUASAV, University of Angers, France
| | | | | | - Sow Tein Leong
- Department of Chemistry, Faculty of sciences, University of Malaya, Malaysia
| | | | - Khalijah Awang
- Department of Chemistry, Faculty of sciences, University of Malaya, Malaysia
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