Chemical Composition and Antioxidant Activity of Essential Oils and Hexane Extract of Onopordum arenarium from Tunisia.

Autor: Bouazzi S; Research Unit 13ES63, Applied Chemistry and Environment, Monastir University, Faculty of Sciences of Monastir, University of Monastir, Monastir 5000, Tunisia., El Mokni R; Laboratory of Botany and Plant Ecology, Faculty of Sciences of Bizerta, University of Carthage, Jarzouna, Bizerta 7021, Tunisia.; Silvo-Pastoral Resources Laboratory, Silvo-Pastoral Institute of Tabarka, University of Jendouba, Tabarka BP 3458110, Tunisia.; Department of Botany and Plant Biology, Faculty of Pharmacy of Monastir, University of Monastir, Avenue Avicenna, Monastir BP 2075000, Tunisia., Nakbi H; Research Unit 13ES63, Applied Chemistry and Environment, Monastir University, Faculty of Sciences of Monastir, University of Monastir, Monastir 5000, Tunisia., Dhaouadi H; Research Unit 13ES63, Applied Chemistry and Environment, Monastir University, Faculty of Sciences of Monastir, University of Monastir, Monastir 5000, Tunisia., Joshi RK; Department of Phytochemistry, ICMR-National Institute of Traditional Medicine, Nehru Nagar, Belagavi, Karnataka 590010, India., Hammami S; Research Unit 13ES63, Applied Chemistry and Environment, Monastir University, Faculty of Sciences of Monastir, University of Monastir, Monastir 5000, Tunisia.
Jazyk: angličtina
Zdroj: Journal of chromatographic science [J Chromatogr Sci] 2020 Apr 23; Vol. 58 (4), pp. 287-293.
DOI: 10.1093/chromsci/bmz113
Abstrakt: In the present study, volatile oils from Onopordum arenarium fresh flowers and stems were obtained by hydrodistillation and the non-polar aerial part hexane extract was prepared using a Soxhlet apparatus. The constituents of different organs were identified for the first time by gas chromatography equipped with flame ionization detector and gas chromatography coupled to mass spectrometry. A total of 29 and 25 compounds were identified constituting over 91.6 and 89.2% of the whole constituents from flower and stem volatile oils, respectively. Both organs were constituted mainly of long-chain hydrocarbons (23.3-36.4%) followed by oxygenated long-chain hydrocarbons (31.5-33.8%) and oxygenated monoterpenes (14.4-6.6%). The major identified compound was palmitic acid [25.5% in O. arenarium flower essential oil (EO) and 28.7% in the stem EO]. Eighteen compounds representing 80.7% of the whole constituents were identified in the n-hexane extract, which was characterized by high amounts of triterpenoids (39.6%) and dominated by lupeol acetate (19.2%) and β-amyrin acetate (10.1%). Moreover, all extracts were evaluated for antioxidant potential using 1,1-diphenyl-2-picrylhydrazyl radical assay. The obtained results demonstrated that the EOs and the hexane extract could be a new source of natural potentially bioactive molecules.
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Databáze: MEDLINE
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