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Chemical Composition and Antioxidant Activity of Algerian Juniperus Phoenicea Essential Oil
Aicha Harhour,Moussa Brada,Marie-Laure Fauconnier,Georges Lognay 한국생약학회 2018 Natural Product Sciences Vol.24 No.2
Berries and branches essential oil of Juniperus phoenicea were obtained by electromagnetic induction heating assisted extraction and by hydrodistillation with a yield varied from (1.2 ? 0.3 to 2.4 ? 0.7%) and from (0.6 ? 0.1% to 1.1 ? 0.1%), respectively. forty eight compounds were identified representing (97.2 - 99.7%) of the oil. a-Pinene (40.3 - 67.8%) and d-3-carene (13.5 - 26.8%) were the main compounds in berries and branches essential oils. Antioxidant activity was evaluated by three means: inhibition of 2, 2-diphenyl-1-picryl hydrazyl (DPPH) free radical, reducing power and b-Carotene/linoleic acid bleaching. The antioxidant activity of essential oils showed IC50 ranging from 67.6 ? 1.02 mg/mL to 131.5 ? 0.8 mg/mL for berries and from 98 ? 1.25 mg/mL to 166.8 ? 0.29 mg/mL for the branches. Berries oil show more potent antioxidant activity compared to branches. This result is supported by the three methods investigated in this work.
Insect fatty acids: A comparison of lipids from three Orthopterans and Tenebrio molitor L. larvae
Aman Paul,Michel Frederich,Rudy Caparros Megido,Taofic Alabi,PriyankaMalik,Roel Uyttenbroeck,Frederic Francis,Christophe Blecker,Eric Haubruge,Georges Lognay,Sabine Danthine 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.2
In order to explore some potential insect sources of food lipids, the lipid compositions of three Orthopterans (Acheta domesticus, Conocephalus discolor and Chorthippus parallelus) were analyzed and compared with those of Tenebrio molitor larvae. A. domesticus, Co. discolor, Ch. parallelus and T. molitor larvae were found to contain approximately 15%, 13%, 10% and 32% lipids on dryweight, respectively. The lipids fromthree Orthopterans contain much higheramounts of essential fatty acids than those of T.molitor larvae. The twoOrthopterans of the suborder Ensifera i.e., A. domesticus and Co. discolor contain linoleic acid inmajor quantities,while Ch. parallelus of the suborder Caelifera, contain α-linolenic acid in major quantities. The consumption of linoleic and α-linolenic fatty acid is linked with numerous health promoting effects. The factors that contribute to differences in fatty acid profiles of these insects are being discussed. At last the nutritional parameters including polyunsaturated to saturated and omega 6 to omega 3 fatty acid ratios of these insect lipids are also being discussed to understand the potential role of these lipids in human nutrition.