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Essential oil composition and antioxidant activity of leaves and flowers of Skimmia anquetilia N.P. Taylor & Airy Shaw / Manjul Gondwal in The journal of essential oil research, Vol. 24 N° 1 (Fevrier 2012) 

Public ISBD [article]  in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 83-90 Titre : Essential oil composition and antioxidant activity of leaves and flowers of Skimmia anquetilia N.P. Taylor & Airy Shaw Type de document : texte imprimé Auteurs : Manjul Gondwal, Auteur ; Om Prakash, Auteur ; Anil K. Pant, Auteur Année de publication : 2012 Article en page(s) : pp. 83-90 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Skimmia  anquetilia  Rutaceae  Essential  oils  Antioxidant  activity  Phenolics Résumé : The essential oils of the leaves and flowers of Skimmia anquetilia N.P.Taylor & Airy Shaw (family: Rutaceae) were examined by the combination of gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The analysis of the oils from leaves and flowers revealed the presence of β-phellandrene (1.8%, 18.4%), geijerene (2.0%, 15.0%), germacrene B (11.6%, 2.0%), linalyl acetate (7.3%, 11.2%), linalool (9.5%, 9.4%), α-terpineol (5.6%, 4.4%) and pregeijerene (0.2%, 5.6%) as major constituents. The antioxidant activity of the leaf and flower oils was studied and compared by different methods including their effect on reducing power, chelating properties of Fe+2 and in vitro 2’2’-diphenylpicrylhadrazyl (DPPH) radical-scavenging activity. The total phenolic contents in the water extracts of leaf and flower were estimated and compared. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646034 [article] Essential oil composition and antioxidant activity of leaves and flowers of Skimmia anquetilia N.P. Taylor & Airy Shaw [texte imprimé] / Manjul Gondwal, Auteur ; Om Prakash, Auteur ; Anil K. Pant, Auteur . - 2012 . - pp. 83-90. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 24 N° 1 (Fevrier 2012) . - pp. 83-90 Mots-clés : Skimmia  anquetilia  Rutaceae  Essential  oils  Antioxidant  activity  Phenolics Résumé : The essential oils of the leaves and flowers of Skimmia anquetilia N.P.Taylor & Airy Shaw (family: Rutaceae) were examined by the combination of gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The analysis of the oils from leaves and flowers revealed the presence of β-phellandrene (1.8%, 18.4%), geijerene (2.0%, 15.0%), germacrene B (11.6%, 2.0%), linalyl acetate (7.3%, 11.2%), linalool (9.5%, 9.4%), α-terpineol (5.6%, 4.4%) and pregeijerene (0.2%, 5.6%) as major constituents. The antioxidant activity of the leaf and flower oils was studied and compared by different methods including their effect on reducing power, chelating properties of Fe+2 and in vitro 2’2’-diphenylpicrylhadrazyl (DPPH) radical-scavenging activity. The total phenolic contents in the water extracts of leaf and flower were estimated and compared. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/full/10.1080/10412905.2012.646034