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  • Title: Chemical Composition, Characteristics Profiles and Bioactivities of Tunisian Phalaris canariensis Seeds: a Potential Source of ω-6 and ω-9 Fatty Acids.
    Author: Ben Salah H, Kchaou M, Ben Abdallah Kolsi R, Abdennabi R, Ayedi M, Gharsallah N, Allouche N.
    Journal: J Oleo Sci; 2018 Jul 01; 67(7):801-812. PubMed ID: 29877220.
    Abstract:
    Seeds oils of Phalaris canariensis extracted by ultrasonication and cold maceration were evaluated for their physical characteristics, total phenol contents, fatty acid and sterol compositions as well as for their antioxidant, antibacterial and acetylcholinesterase activities. The physicochemical properties of ultrasonication and cold maceration oils respectively were: acid values (4.00 and 3.25) mg KOH/g, peroxide values (5.53 and 4.41) meq O2 Kg-1, iodine values (88.83 and 95.17) g/100 g of oil, saponification values (119.21 and 98.17) mg KOH/g, phenolic content (36.40 and 53.00) mg GAE/g extract, chlorophylls (0.52 and 0.60) mg/kg oil and carotenoids contents (1.92 and 1.88) mg/kg oil. Gas chromatography analysis revealed that linoleic (52.03 and 52.2%), oleic (31.75 and 31.84%) and palmitic (11.09 and 11.34 %) acids were the major fatty acids in the two oils. Specific extinctions at 232 nm (K232) and 270 nm (K270) were (0.58 and 0.44) and (0.42 and 0.33), respectively. The DSC melting curve showed that their melting points and melting enthalpies were (-28.05°C and 76.8 J/g) and (-27.47°C and 62.3 J/g), respectively. On the other hand, the evaluation of their DPPH radical scavenging, total antioxidant capacity, antibacterial and acetylcholinesterase activities showed interesting results. Thus, Phalaris canariensis seeds oils could deserve further consideration and investigation as a potentially new multi-purpose product for agro-food, medicinal and cosmetic uses.
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