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Essential oil composition of peperomia serpens (Sw.) loud. / Ana Carla M. Da Silva in The journal of essential oil research, Vol. 18 N° 3 (Mai-Juin 2006) 

Public ISBD [article]  in The journal of essential oil research > Vol. 18 N° 3 (Mai-Juin 2006) . - pp. 269-271 Titre : Essential oil composition of peperomia serpens (Sw.) loud. Type de document : texte imprimé Auteurs : Ana Carla M. Da Silva, Auteur ; Eloisa Helena A. Andrade, Auteur ; Léa Maria M. Carreira, Auteur Année de publication : 2006 Article en page(s) : pp. 269-271 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Peperomia  serpens  Piperaceae  Essential  oil  composition  Headspace  volatiles  α-humulene  (Z)-nerolidol  (E)-nerolidol  β-caryophyllene Résumé : The fresh- and dried-leaf oils and the fresh-leaf concentrate of Peperomia serpens were obtained by hydrodistilla-tion and SPME, and analyzed by GC and GC/MS. The main compounds identifed in the hydrodistilled fresh-leaf oil were (Z)-nerolidol acetate (42.9%) and (E)-nerolidol (31.3%). The major constituents found in the SPME fresh-leaf headspace were α-humulene (49.1%) and β-caryophyllene (35.1%). The hydrodistilled dried-leaf oil was dominated by (Z)-nerolidol acetate (36.6%) and (E)-nerolidol (29.1%). It seems that the hydrolysis of α-humulene, identifed only in the SPME fresh-leaf headspace, was responsible by the appearance of (E)-nerolidol in the fresh- and dried-leaf oils, followed by isomerization and acetylation to produce (Z)-nerolidol acetate, being all the process heat provoked. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699084#.UaXGLdgYrOk [article] Essential oil composition of peperomia serpens (Sw.) loud. [texte imprimé] / Ana Carla M. Da Silva, Auteur ; Eloisa Helena A. Andrade, Auteur ; Léa Maria M. Carreira, Auteur . - 2006 . - pp. 269-271. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 18 N° 3 (Mai-Juin 2006) . - pp. 269-271 Mots-clés : Peperomia  serpens  Piperaceae  Essential  oil  composition  Headspace  volatiles  α-humulene  (Z)-nerolidol  (E)-nerolidol  β-caryophyllene Résumé : The fresh- and dried-leaf oils and the fresh-leaf concentrate of Peperomia serpens were obtained by hydrodistilla-tion and SPME, and analyzed by GC and GC/MS. The main compounds identifed in the hydrodistilled fresh-leaf oil were (Z)-nerolidol acetate (42.9%) and (E)-nerolidol (31.3%). The major constituents found in the SPME fresh-leaf headspace were α-humulene (49.1%) and β-caryophyllene (35.1%). The hydrodistilled dried-leaf oil was dominated by (Z)-nerolidol acetate (36.6%) and (E)-nerolidol (29.1%). It seems that the hydrolysis of α-humulene, identifed only in the SPME fresh-leaf headspace, was responsible by the appearance of (E)-nerolidol in the fresh- and dried-leaf oils, followed by isomerization and acetylation to produce (Z)-nerolidol acetate, being all the process heat provoked. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2006.9699084#.UaXGLdgYrOk