Seasonal variations of teucrium flavum L. essential oil / Maria Lo Presti in The journal of essential oil research, Vol. 22 N° 3 (Mai/Juin 2010)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 22 N° 3 (Mai/Juin 2010) . - pp. 211 - 216 Titre : Seasonal variations of teucrium flavum L. essential oil Type de document : texte imprimé Auteurs : Maria Lo Presti, Auteur ; Maria L. Crupi, Auteur ; Rosaria Costa, Auteur Année de publication : 2010 Article en page(s) : pp. 211 - 216 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Teucrium flavum Lamiaceae Essential oil composition Germacrene D b-bisabolene Index. décimale : 646 Résumé : Essential oils from the aerial parts of Sicilian Teucrium flavum L., isolated by using microwave-assisted hydrodistillation (MHD), were analyzed for the first time at various seasonal stages (vegetative and budding stage) by means of GC/MS and GC-FID; the flowers and fruits were also subjected to examination. More than 80 compounds were identified as oil components. The leaf, flower and fruit oils were characterized by a predominance of sesquiterpenes, such as b-caryophyllene (3–5 g/100 g), germacrene D (4–14 g/100 g), b-bisabolene (32–49 g/100 g); the total amount of sesquiterpene hydrocarbons contained in each oil was 56–70 g/100 g, the oxygenated derivatives were in the range of 9–20 g/100 g. The monoterpene hydrocarbons in all samples (leaves, flowers, fruits) were contained in very low amounts, from 0.2 to 1.6 g/100 g, and were the least representative fraction of the oils. Oxygenated aliphatic compounds, especially esters, were also detected. The results can be useful to support, by means of a safe reliable sample preparation (MHD) and analytical (GC) technique, the research on medicinal plants belonging to Mediterranean flora. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/51 [article] Seasonal variations of teucrium flavum L. essential oil [texte imprimé] / Maria Lo Presti, Auteur ; Maria L. Crupi, Auteur ; Rosaria Costa, Auteur . - 2010 . - pp. 211 - 216. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 3 (Mai/Juin 2010) . - pp. 211 - 216 Mots-clés : Teucrium flavum Lamiaceae Essential oil composition Germacrene D b-bisabolene Index. décimale : 646 Résumé : Essential oils from the aerial parts of Sicilian Teucrium flavum L., isolated by using microwave-assisted hydrodistillation (MHD), were analyzed for the first time at various seasonal stages (vegetative and budding stage) by means of GC/MS and GC-FID; the flowers and fruits were also subjected to examination. More than 80 compounds were identified as oil components. The leaf, flower and fruit oils were characterized by a predominance of sesquiterpenes, such as b-caryophyllene (3–5 g/100 g), germacrene D (4–14 g/100 g), b-bisabolene (32–49 g/100 g); the total amount of sesquiterpene hydrocarbons contained in each oil was 56–70 g/100 g, the oxygenated derivatives were in the range of 9–20 g/100 g. The monoterpene hydrocarbons in all samples (leaves, flowers, fruits) were contained in very low amounts, from 0.2 to 1.6 g/100 g, and were the least representative fraction of the oils. Oxygenated aliphatic compounds, especially esters, were also detected. The results can be useful to support, by means of a safe reliable sample preparation (MHD) and analytical (GC) technique, the research on medicinal plants belonging to Mediterranean flora. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/51

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Volatile constituents of tagetes bipinata L. / Rosaria Costa in The journal of essential oil research, Vol. 21 N° 6 (Novembre/Décembre 2009)  

Public ISBD [article]  inThe journal of essential oil research > Vol. 21 N° 6 (Novembre/Décembre 2009) . - pp. 511-515 Titre : Volatile constituents of tagetes bipinata L. Type de document : texte imprimé Auteurs : Rosaria Costa, Auteur ; Maria Lo Presti, Auteur ; Paola Dugo, Auteur Article en page(s) : pp. 511-515 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Tagetes bipinata Asteraceae Essential oil composition (Z)-β  -ocimene Index. décimale : 646 Résumé : The essential oil of Tagetes bipinata L. (fam. Asteraceae) has been investigated by means of GC-FID and GC/ MS. The use of a novel GC/MS library provided with a retention index filter tool has led to the identification of 36 volatiles. Accurate quantitative analysis has been carried out through the measurement of correction factors and analytical data have been expressed as g/100 g for each volatile determined. Major constituents of the oil were (Z)-bocimene (32.57 g/100 g), dihydrotagetone (9.38 g/100 g), (Z)-tagetone (4.62 g/100 g), (Z)- and (E)-ocimenone (3.07 and 2.51 g/100 g, respectively) and limonene (2.53 g/100 g). The total identified fraction accounted for 60.13 g/100 g. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top [article] Volatile constituents of tagetes bipinata L. [texte imprimé] / Rosaria Costa, Auteur ; Maria Lo Presti, Auteur ; Paola Dugo, Auteur . - pp. 511-515. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 21 N° 6 (Novembre/Décembre 2009) . - pp. 511-515 Mots-clés : Tagetes bipinata Asteraceae Essential oil composition (Z)-β  -ocimene Index. décimale : 646 Résumé : The essential oil of Tagetes bipinata L. (fam. Asteraceae) has been investigated by means of GC-FID and GC/ MS. The use of a novel GC/MS library provided with a retention index filter tool has led to the identification of 36 volatiles. Accurate quantitative analysis has been carried out through the measurement of correction factors and analytical data have been expressed as g/100 g for each volatile determined. Major constituents of the oil were (Z)-bocimene (32.57 g/100 g), dihydrotagetone (9.38 g/100 g), (Z)-tagetone (4.62 g/100 g), (Z)- and (E)-ocimenone (3.07 and 2.51 g/100 g, respectively) and limonene (2.53 g/100 g). The total identified fraction accounted for 60.13 g/100 g. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.jeoronline.com/archive/detail/42#top

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