title: Comparative chemometric analyses of geographic origins and compositions of lavandin var. Grosso essential oils by mid infrared spectroscopy and gas chromatography.
abstract: Lavandin, a sterile hybrid of Lavandula angustifolia P. Mill. x Lavandula latifolia (L.f.) Medikus (Lamiaceae) is a plant widely cultivated for essential oil production in the South of France. Chemometric treatment by mid-infrared (MID-IR) spectroscopy data was assessed for the differentiation of Grosso Lavandin Essential Oils of Controlled Area (GLEOCA) and results were compared to those obtained by gas chromatography for MID-IR short time technique validation. The quantification of the main 13 hydrocarbons and oxygenated compounds generally controlled by industrial perfumers in GLEOCA samples (n=83) of three geographic origins: "Simiane", "Puimoisson" (with two producers) and "Richerenches" and their classification were successfully obtained by partial least square discriminant analysis (PLS-DA) by comparison with gas chromatography. The best prediction results were obtained using first derivate spectral data in the 1800-700 cm(-1) range. The spectroscopic interpretation of regression vectors showed that each geographic origin was correlated to components of GLEOCA. Chemometric MID-IR spectra treatments allowed us to obtain similar results than those obtained by time consuming analytical techniques such as GC and therefore constitute a robust and help fast method for authentication of GLEOCA and should be extended to other essential oils for authentication of geographic origin.
authors: Equipe Phytochimie, UMR CNRS 6171, Systèmes chimiques complexes, Case 461, Université Paul Cézanne, 13397 Marseille Cedex 20, France. isabelle.bombarda@univ-cezanne.fr
authors: I
authors: I
authors: Bombarda
authors: N
authors: N
authors: Dupuy
authors: J-P Le Van
authors: JP
authors: Da
authors: E M
authors: EM
authors: Gaydou
mesh_terms: D002849:Chromatography, Gas; D016018:Least-Squares Analysis; D009822:Oils, Volatile / Q000032:analysis / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D009822:Oils, Volatile