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Le PM, Martineau E, Akoka S, Remaud G, Chartrand MMG, Meija J, Mester Z. Site-specific carbon isotope measurements of vanillin reference materials by nuclear magnetic resonance spectrometry. Anal Bioanal Chem 2022; 414:7153-7165. [PMID: 36097194 PMCID: PMC9482901 DOI: 10.1007/s00216-022-04292-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/08/2022] [Accepted: 08/16/2022] [Indexed: 11/29/2022]
Abstract
Vanillin, one of the world's most popular flavor used in food and pharmaceutical industries, is extracted from vanilla beans or obtained (bio)-synthetically. The price of natural vanillin is considerably higher than that of its synthetic alternative which leads increasingly to counterfeit vanillin. Here, we describe the workflow of combining carbon isotope ratio combustion mass spectrometry with quantitative carbon nuclear magnetic resonance spectrometry (13C-qNMR) to obtain carbon isotope measurements traceable to the Vienna Peedee Belemnite (VPDB) with 0.7‰ combined standard uncertainty (or expanded uncertainty of 1.4‰ at 95% confidence level). We perform these measurements on qualified Bruker 400 MHz instruments to certify site-specific carbon isotope delta values in two vanillin materials, VANA-1 and VANB-1, believed to be the first intramolecular isotopic certified reference material (CRMs).
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Affiliation(s)
- Phuong Mai Le
- Metrology, National Research Council Canada, 1200 Montreal Road, Ottawa, ON, K1A 0R6, Canada.
| | - Estelle Martineau
- Nantes Université, CNRS, CEISAM, UMR6230, F-44000, Nantes, France
- CAPACITÉS SAS, Nantes, France
| | - Serge Akoka
- Nantes Université, CNRS, CEISAM, UMR6230, F-44000, Nantes, France
| | - Gerald Remaud
- Nantes Université, CNRS, CEISAM, UMR6230, F-44000, Nantes, France
| | - Michelle M G Chartrand
- Metrology, National Research Council Canada, 1200 Montreal Road, Ottawa, ON, K1A 0R6, Canada
| | - Juris Meija
- Metrology, National Research Council Canada, 1200 Montreal Road, Ottawa, ON, K1A 0R6, Canada.
| | - Zoltán Mester
- Metrology, National Research Council Canada, 1200 Montreal Road, Ottawa, ON, K1A 0R6, Canada
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Joubert V, Silvestre V, Grand M, Loquet D, Ladroue V, Besacier F, Akoka S, Remaud GS. Full Spectrum Isotopic 13C NMR Using Polarization Transfer for Position-Specific Isotope Analysis. Anal Chem 2018; 90:8692-8699. [DOI: 10.1021/acs.analchem.8b02139] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Valentin Joubert
- Elucidation of Biosynthesis by Isotopic Spectrometry Group, CEISAM, University of Nantes-CNRS UMR6230, F-44322 Nantes, France
| | - Virginie Silvestre
- Elucidation of Biosynthesis by Isotopic Spectrometry Group, CEISAM, University of Nantes-CNRS UMR6230, F-44322 Nantes, France
| | - Mathilde Grand
- Elucidation of Biosynthesis by Isotopic Spectrometry Group, CEISAM, University of Nantes-CNRS UMR6230, F-44322 Nantes, France
| | - Denis Loquet
- Elucidation of Biosynthesis by Isotopic Spectrometry Group, CEISAM, University of Nantes-CNRS UMR6230, F-44322 Nantes, France
| | - Virginie Ladroue
- Laboratoire de Lyon, Institut National de Police Scientifique, 31 avenue Franklin Roosevelt, 69134 Ecully CEDEX, France
| | - Fabrice Besacier
- Laboratoire de Lyon, Institut National de Police Scientifique, 31 avenue Franklin Roosevelt, 69134 Ecully CEDEX, France
| | - Serge Akoka
- Elucidation of Biosynthesis by Isotopic Spectrometry Group, CEISAM, University of Nantes-CNRS UMR6230, F-44322 Nantes, France
| | - Gérald S. Remaud
- Elucidation of Biosynthesis by Isotopic Spectrometry Group, CEISAM, University of Nantes-CNRS UMR6230, F-44322 Nantes, France
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