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Sifi I.,Laboratoire Des Science Fondamentales niversite Amar Telidji Of Laghouat | Gourine N.,Laboratoire Des Science Fondamentales niversite Amar Telidji Of Laghouat | Gaydou E.M.,Aix - Marseille University | Yousfi M.,Laboratoire Des Science Fondamentales niversite Amar Telidji Of Laghouat
Natural Product Research | Year: 2015

The essential oils (EOs) of unripe galls (from male and female plants) of a total number of 52 samples of Pistacia atlantica collected from different regions in Algeria were analysed by GC/MS and GC. The yields of the extraction of the EO by hydrodistillation vary from low to high values (0.08-1.89% v/w). The results of both methods of principal component analysis and hierarchical ascendant classification revealed the presence of two different chemotypes: α-pinene chemotype and α-pinene/sabinene/terpinen-4-ol chemotype. © 2015 © 2015 Taylor & Francis.


PubMed | Laboratoire Des Science Fondamentales niversite Amar Telidji Of Laghouat
Type: Journal Article | Journal: Natural product communications | Year: 2013

The essential oil obtained by hydrodistillation of the flowers of Rhanterium adpressum Coss. & Durieu was analyzed using GC and GC-MS. The essential oil was very rich in monoterpene compounds. The major components identified were the monoterpene hydrocarbons: camphene (21.8%), myrcene (19.3%) and alpha-pinene (17.4%). Other compounds, including limonene, beta-pinene and terpinol-4-ol, were present in low content (4-6%). The composition of the fatty acids in the lipid extract obtained from the flowers was also investigated by GC and GC-MS. The main fatty acids identified were palmitic (47.4%), oleic (12.9%) and stearic acids (10.6%). The total phenolic contents and the antioxidant activities were also evaluated for both extracts. The total phenolic contents were determined using the Folin-Ciocalteu reagent and the antioxidant activities were measured using three different assays: DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging activity, FRAP (ferric reducing antioxidant potential) and a molybdenum assay. As a result of these tests, the lipid extract exhibited the highest antioxidant activities in comparison with the essential oil extract.

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