title: Chemical composition and antifungal activity of volatiles from three Opuntia species growing in Tunisia.
abstract: The chemical composition of the volatiles isolated by steam distillation from leaves, flowers and fruits of Opuntia lindheimeri var. linguiformis L. Benson, leaves and flowers of Opuntia macrorhiza Engelm and leaves of Opuntia microdasys (Lehmann) gathered in the sea cliff of Monastir town (Tunisia), has been studied by GC and GC-MS. Remarkable differences were noted between the composition and the constituent percentage of the different studied organs. The most important compounds found in leaves, flowers and fruits of Opuntia lindheimeri var. linguiformis were tetradecanoic acid (3.15-13.57%), hexadecanoic acid (8.5-17.33%), butyl tetradecanoate (8.05-21.47%) and (E)-3-Butyldiene phthalide (6.92-15.77%). In the flowers volatile extract of Opuntia macrorhiza, the main compound found was Butyl tetradecanoate (21.14%). The volatile extract from Opuntia microdasys leaves was mainly rich in hexadecanoic acid (13.13%), (E)-3-Butyldiene phthalide (21.4%) and butyl tetradecanoate (5.91%). Volatile components extracts were tested against the fungi Alternaria solani, Botrytis cinerea, Fusarium solani f. sp cucurbitae, Fusarium oxysporum f. sp niveum, Pythium ultimum and Rhizoctonia solani. The strongest inhibitory effect of the all volatile extracts was observed against
authors.affiliation: Laboratoire de Chimie des Substances Naturelles et de Synthèse Organique (99/UR/12-26), Faculté des Sciences de Monastir, Université de Monastir, 5000 Monastir, Tunisie.
authors.forename: Afifa
authors.initials: A
authors.lastname: Bergaoui
authors.forename: Naima
authors.initials: N
authors.lastname: Boughalleb
authors.forename: Hichem
authors.initials: H
authors.lastname: Ben Jannet
authors.forename: F
authors.initials: F
authors.lastname: Harzallah-Shiric
authors.forename: Mohamed
authors.initials: M
authors.lastname: El Mahjoub
authors.forename: Zine
authors.initials: Z
authors.lastname: Mighri
mesh_terms: D000818:Animals; D000935:Antifungal Agents / Q000737:chemistry*; D006801:Humans; D008826:Microbial Sensitivity Tests; D009822:Oils, Volatile / Q000737:chemistry*; D029747:Opuntia / Q000033:anatomy & histology / Q000737:chemistry*; D014416:Tunisia
chemical_list: D000935:Antifungal Agents; D009822:Oils, Volatile