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Analysis of cymenes in essential oils : the case of Lepechinia meyeni (Walp.) epling

Collin Guy, Garneau François-Xavier, Gagnon Hélène, Pichette André et Lavoie Serge. (2010). Analysis of cymenes in essential oils : the case of Lepechinia meyeni (Walp.) epling. Journal of Essential Oil Research, 22, (4), p. 310-313.

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URL officielle: http://dx.doi.org/doi:10.1080/10412905.2010.970033...

Résumé

The similarity of the mass spectra of the o-, m- and p-cymenes together with the small differences of their retention indices make it difficult to unambiguously identify the three cymene isomers. Moreover, there are discrepancies in the various data banks used as a reference in the analysis of essential oils. The authors have taken advantage of the presence of these three compounds in the oil of Lepechinia meyeni to identify the right order of elution of these compounds on both non-polar and polar columns. The order of elution on both DB-5 and S-wax 10 capillary columns is: m-, followed closely by p- and finally at some distance, o-cymene. A fourth compound having a similar mass spectrum was observed. From the literature, it was tentatively identified as 3,7,7-trimethyl-1,3,5-cycloheptatriene.

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:1041-2905
Volume:22
Numéro:4
Pages:p. 310-313
Version évaluée par les pairs:Oui
Date:2010
Identifiant unique:10.1080/10412905.2010.9700333
Sujets:Sciences naturelles et génie > Sciences naturelles > Chimie
Département, module, service et unité de recherche:Départements et modules > Département des sciences fondamentales
Mots-clés:Lepechinia meyeni , Lamiaceae, essential oil composition, o-cymene, m-cymene, p-cymene, 3,7,7-trimethyl-1,3,5-cycloheptatriene
Déposé le:01 sept. 2021 17:56
Dernière modification:01 sept. 2021 17:56
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