title: Fatty acids composition of Tunisian Ziziphus lotus L. (Desf.) fruits and variation in biological activities between leaf and fruit extracts.
abstract: This study was conceived to evaluate the essential fatty acids, secondary metabolites, antiradical and antimicrobial activities of unexploited Tunisian Ziziphus lotus L. The obtained results indicated that the major components of fatty acids were oleic acid (88.12%) and elaidic acid (7.88%). Leaves contained higher amount of total phenols, flavonoids and tannins than fruits, although both methanolic extracts had significant antioxidant activities. Significant correlations were observed between the total phenol or flavonoid contents in methanolic extracts and antioxidant activity estimated by using both 2,2'-diphenyl-1-picrylhydrazyl and 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic radical-scavenging methods. In addition, both methanolic extracts exhibited strong antibacterial and antifungal activities. The inhibition zone diameters and the minimal inhibition concentration values were in the range of 10-17 mm and 3.1-50 mg/mL, respectively.
authors.affiliation: a Laboratoire des Ressources Sylvo-Pastorales de Tabarka , Institut Sylvo-Pastoral de Tabarka, Université de Jendouba , Jendouba , BP 345, 8110 Tabarka , Tunisia.
authors.forename: Hanene
authors.initials: H
authors.lastname: Ghazghazi
authors.forename: Chedia
authors.initials: C
authors.lastname: Aouadhi
authors.forename: Leila
authors.initials: L
authors.lastname: Riahi
authors.forename: Abderrazak
authors.initials: A
authors.lastname: Maaroufi
authors.forename: Brahim
authors.initials: B
authors.lastname: Hasnaoui
mesh_terms: D000975:Antioxidants / Q000494:pharmacology; D001713:Biphenyl Compounds / Q000494:pharmacology; D005227:Fatty Acids / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D005419:Flavonoids / Q000032:analysis; D016166:Free Radical Scavengers / Q000494:pharmacology; D005638:Fruit / Q000737:chemistry*; D000070116:Lotus / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D019301:Oleic Acid / Q000032:analysis / Q000737:chemistry; D009829:Oleic Acids; D010636:Phenols / Q000032:analysis; D010851:Picrates / Q000494:pharmacology; D018515:Plant Leaves / Q000737:chemistry; D014416:Tunisia; D031957:Ziziphus / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D005227:Fatty Acids; D005419:Flavonoids; D016166:Free Radical Scavengers; D009829:Oleic Acids; D010636:Phenols; D010851:Picrates; D019301:Oleic Acid; C011459:elaidic acid; C004931:1,1-diphenyl-2-picrylhydrazyl; C041477:3-hydroxyflavone
keywords: Ziziphus lotus L.; antimicrobial; antioxidant; fatty acids composition; methanolic extracts