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Chemical composition of volatile oils from algerian nigella sativa L. seeds / Farid Benkaci-Ali in The journal of essential oil research, Vol. 22 N° 4 (Juillet/Août 2010) 

Public ISBD [article]  in The journal of essential oil research > Vol. 22 N° 4 (Juillet/Août 2010) . - pp. 318-322 Titre : Chemical composition of volatile oils from algerian nigella sativa L. seeds Type de document : texte imprimé Auteurs : Farid Benkaci-Ali, Auteur ; Aoumeur Baaliouamer ; Jean Paul Wathelet, Auteur Année de publication : 2011 Article en page(s) : pp. 318-322 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Nigella  sativa  Ranunculaceae  p-Cymene  Thymoquinone  Thymohydroquinone  GC  GC/MS Index. décimale : 646 Résumé : The chemical composition of the volatiles obtained from the fixed oils of Nigella sativa L. seeds growing in Algeria was investigated by GC and GC/MS analysis. Two solvents were studied for extracting the oils, hexane and isopropanol. The composition of N. sativa seeds varieties having four location origins in Algeria, were determined. Alcohols and ketones formed the main proportion using the two solvents, respectively (hexane: 27.4–36.1%, isopropanol: 40.2–59.0%) and (hexane: 39.9–44.3%, isopropanol: 17.5–50.7%), among which thymoquinone and thymohydroqui-none were the predominant antioxidant compounds. The monoterpene hydrocarbons constitute relatively the lower fraction compared to the precedent chemical families, particularly by using the isopropanol solvent. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700335 [article] Chemical composition of volatile oils from algerian nigella sativa L. seeds [texte imprimé] / Farid Benkaci-Ali, Auteur ; Aoumeur Baaliouamer ; Jean Paul Wathelet, Auteur . - 2011 . - pp. 318-322. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 22 N° 4 (Juillet/Août 2010) . - pp. 318-322 Mots-clés : Nigella  sativa  Ranunculaceae  p-Cymene  Thymoquinone  Thymohydroquinone  GC  GC/MS Index. décimale : 646 Résumé : The chemical composition of the volatiles obtained from the fixed oils of Nigella sativa L. seeds growing in Algeria was investigated by GC and GC/MS analysis. Two solvents were studied for extracting the oils, hexane and isopropanol. The composition of N. sativa seeds varieties having four location origins in Algeria, were determined. Alcohols and ketones formed the main proportion using the two solvents, respectively (hexane: 27.4–36.1%, isopropanol: 40.2–59.0%) and (hexane: 39.9–44.3%, isopropanol: 17.5–50.7%), among which thymoquinone and thymohydroqui-none were the predominant antioxidant compounds. The monoterpene hydrocarbons constitute relatively the lower fraction compared to the precedent chemical families, particularly by using the isopropanol solvent. DEWEY : 665 ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2010.9700335