title: Volatile Profile of Herniaria fontanesii Growing Spontaneously in Tunisia.
abstract: The essential oil extracted from Desfontaine's rupturewort, Herniaria fontanesii J. Gay subsp. fontanesii growing wildly in Tunisia, was analyzed using GC and GC-MS techniques. The free radical scavenging capacity and total phenol contents of three crude extracts having different polarities (n-hexane, ethyl acetate and methanol) were examined. Thus, a total of 35 constituents were identified in the Desfontaine's rupturewort essential oil representing 89.8% of the whole constituents. The oil was dominated by hexadecanoic acid, caryophyllene oxide, terpin-4-ol, khusimone and trans-sabinene hydrate. The total phenolic contents ranged from 16.91 to 92.27 mg of gallic acid/g of dry weight and they were found to be significantly higher in methanol than in polar ethyl acetate and hexane extracts. Correlations were observed between the phenolic contents and the antioxidant properties. Thus, the antioxidant activity of the methanol extract was superior to that of all samples tested (IC50 = 0.21 ± 0.04 mg/mL).
authors.affiliation: Research Unit 13ES63, Applied Chemistry and Environment, Faculty of Sciences, Monastir University, Monastir 5000, Tunisia saoussenhammami@voila.fr.
authors.forename: Saoussen
authors.initials: S
authors.lastname: Hammami
authors.affiliation: Faculty of Sciences of Bizerte, Laboratory of Botany and Plant Ecology, Zarzouna, Bizerte 7021, Tunisia.
authors.forename: Ridha
authors.initials: R
authors.lastname: El Mokni
authors.affiliation: Research Unit 13ES63, Applied Chemistry and Environment, Faculty of Sciences, Monastir University, Monastir 5000, Tunisia.
authors.forename: Khaled
authors.initials: K
authors.lastname: Faidi
authors.affiliation: Faculty of Sciences of Bizerte, Laboratory of Botany and Plant Ecology, Zarzouna, Bizerte 7021, Tunisia.
authors.forename: Mohamed Hédi
authors.initials: MH
authors.lastname: El Aouni
authors.affiliation: Research Unit 13ES63, Applied Chemistry and Environment, Faculty of Sciences, Monastir University, Monastir 5000, Tunisia.
authors.forename: Zine
authors.initials: Z
authors.lastname: Mighri
authors.affiliation: Department of Phytochemistry, Regional Medical Research Centre, Nehru Nagar, Belgaum, Karnataka 590010, India.
authors.forename: Rajesh K
authors.initials: RK
authors.lastname: Joshi
mesh_terms: D000085:Acetates; D000081008:Bicyclic Monoterpenes; D001713:Biphenyl Compounds / Q000037:antagonists & inhibitors; D029748:Caryophyllaceae / Q000737:chemistry*; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification; D005707:Gallic Acid / Q000737:chemistry / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry; D006586:Hexanes; D000432:Methanol; D039821:Monoterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification*; D019308:Palmitic Acid / Q000737:chemistry / Q000302:isolation & purification*; D010851:Picrates / Q000037:antagonists & inhibitors; D035261:Plant Components, Aerial / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D012997:Solvents; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*; D014416:Tunisia
chemical_list: D000085:Acetates; D000081008:Bicyclic Monoterpenes; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D006586:Hexanes; D039821:Monoterpenes; D009822:Oils, Volatile; D010851:Picrates; D010936:Plant Extracts; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D012997:Solvents; D013729:Terpenes; C026385:n-hexane; D019308:Palmitic Acid; D005707:Gallic Acid; C007650:ethyl acetate; C004931:1,1-diphenyl-2-picrylhydrazyl; C534325:2-methyl-5-(1-methylethyl)bicyclo(3.1.0)hexan-2-ol; C515179:caryophyllene oxide; D000432:Methanol