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Characterization of cold-pressed and processed bergamot oils by using GC-FID, GC-MS, GC-C-IRMS, enantio-GC, MDGC, HPLC and HPLC-MS-IT-TOF / G. Dugo in The journal of essential oil research, Vol. 24 N° 2 (Avril 2012) 

Public ISBD [article]  in The journal of essential oil research > Vol. 24 N° 2 (Avril 2012) . - pp. 93-117 Titre : Characterization of cold-pressed and processed bergamot oils by using GC-FID, GC-MS, GC-C-IRMS, enantio-GC, MDGC, HPLC and HPLC-MS-IT-TOF Type de document : texte imprimé Auteurs : G. Dugo, Auteur ; I. Bonaccorsi, Auteur ; D. Sciarrone, Auteur Année de publication : 2012 Article en page(s) : pp. 93-117 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : C.  bergamia  essential  oil  composition  Enantiomeric  distribution  Isotope  ratios  Genuineness  Seasonal  variation  Herniarin Résumé : Numerous samples of Italian cold-pressed bergamot oils, representative of the industrial production of the last three seasons (2008/09, 2009/10 and 2010/11), as well as several samples of bergapten-free, concentrated and recovered oils, have been extensively investigated in the present study. The samples were analyzed to determine the composition of the volatile fraction, the oxygen heterocyclic compounds, the enantiomeric distribution of twelve volatile components and the isotopic ratios of selected volatiles. Differences from previous studies emerged. The recent improvement in cultural practices is confirmed by the increase of linalool and linalyl acetate, indicative of better quality of the essential oils. The seasonal variation of the enantiomeric excess of α-terpineol, characteristic of cold-pressed bergamot oils, is confirmed. Some oxygen heterocyclic compounds are here quantitatively determined for the first time. The presence of herniarin is confirmed in genuine samples through high-pressure liquid-chromatography–mass spectrometry–ion trap–time of flight (HPLC-MS-IT-TOF). The isotopic ratios herein reported, for all the samples analyzed, represent a useful tool for the evaluation of genuineness of cold-pressed and processed bergamot oils. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.659526 [article] Characterization of cold-pressed and processed bergamot oils by using GC-FID, GC-MS, GC-C-IRMS, enantio-GC, MDGC, HPLC and HPLC-MS-IT-TOF [texte imprimé] / G. Dugo, Auteur ; I. Bonaccorsi, Auteur ; D. Sciarrone, Auteur . - 2012 . - pp. 93-117. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 24 N° 2 (Avril 2012) . - pp. 93-117 Mots-clés : C.  bergamia  essential  oil  composition  Enantiomeric  distribution  Isotope  ratios  Genuineness  Seasonal  variation  Herniarin Résumé : Numerous samples of Italian cold-pressed bergamot oils, representative of the industrial production of the last three seasons (2008/09, 2009/10 and 2010/11), as well as several samples of bergapten-free, concentrated and recovered oils, have been extensively investigated in the present study. The samples were analyzed to determine the composition of the volatile fraction, the oxygen heterocyclic compounds, the enantiomeric distribution of twelve volatile components and the isotopic ratios of selected volatiles. Differences from previous studies emerged. The recent improvement in cultural practices is confirmed by the increase of linalool and linalyl acetate, indicative of better quality of the essential oils. The seasonal variation of the enantiomeric excess of α-terpineol, characteristic of cold-pressed bergamot oils, is confirmed. Some oxygen heterocyclic compounds are here quantitatively determined for the first time. The presence of herniarin is confirmed in genuine samples through high-pressure liquid-chromatography–mass spectrometry–ion trap–time of flight (HPLC-MS-IT-TOF). The isotopic ratios herein reported, for all the samples analyzed, represent a useful tool for the evaluation of genuineness of cold-pressed and processed bergamot oils. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.659526