Natural abundance 2H-ERETIC-NMR authentication of the origin of methyl salicylate.
Methyl salicylate is a compound currently used in the creation of many flavors. It can be obtained by synthesis or from two natural sources: essential oil of wintergreen and essential oil of sweet birch bark. Deuterium site-specific natural isotope abundance (A(i)) determination by NMR spectroscopy with the method of reference ERETIC ((2)H-ERETIC-NMR) has been applied to this compound. A(i) measurements have been performed on 19 samples of methyl salicylate from different origins, natural/synthetic and commercial/extracted. This study demonstrates that appropriate treatment performed on the data allows discrimination between synthetic and natural samples. Moreover, the representation of intramolecular ratios R(6/5) as a function of R(3/2) distinguishes between synthetics, wintergreen oils, and sweet birch bark oils.
Le Grand
Flore
F
LAIEM, UMR 6006 CNRS, Université de Nantes, France. flore.legrand@degussa.com
George
Gerard
G
Akoka
Serge
S
D029662:Betula / Q000737:chemistry; D003903:Deuterium; D009682:Magnetic Resonance Spectroscopy; D009822:Oils, Volatile / Q000737:chemistry; D024301:Plant Bark / Q000737:chemistry; D012459:Salicylates / Q000032:analysis / Q000737:chemistry / Q000145:classification*
D009822:Oils, Volatile; D012459:Salicylates; D003903:Deuterium; C033069:methyl salicylate