Article (Scientific journals)
Chemical composition and physicochemical characteristics of fixed oils from Algerian Nigella sativa seeds
Benkaci, Ali; Wathelet, Jean-Paul
2012In Chemistry of Natural Compounds, 47 (6), p. 925-931
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Keywords :
Nigella sativa Linn; fatty acids; sterols
Abstract :
[en] The fatty acids, sterols, and polyphenols from the fixed oils of Nigella sativa seeds originating from four locations were determined. The seeds contained respectively 30.63–34.27% and 25.66–32.77% of fixed oils using hexane and isopropyl alcohol in solvent extraction. Linoleic, oleic, and palmitic acids formed the main proportion using the two solvents, respectively: hexane 54.47–61.28%, isopropanol 56.98–67.30%; hexane 19.62–22.94%, isopropanol 18.85–21.96%, and hexane 11.17–13.60%, isopropanol 9.20–14.18%. Other minor unsaturated fatty acids were identified. Eight phytosterols were isolated and identified in the fixed oils by GC and GC/MS analysis, wherein -sitosterol was the dominating compound that inhibits the absorption of dietary cholesterol, followed by stigmasterol, campesterol, and 5-avenasterol.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Benkaci, Ali
Wathelet, Jean-Paul ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie générale et organique
Language :
English
Title :
Chemical composition and physicochemical characteristics of fixed oils from Algerian Nigella sativa seeds
Publication date :
2012
Journal title :
Chemistry of Natural Compounds
ISSN :
0009-3130
eISSN :
1573-8388
Publisher :
Springer Science & Business Media B.V., New York, United States - New York
Volume :
47
Issue :
6
Pages :
925-931
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 11 January 2012

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