title: Extracts of Flourensia cernua (L): volatile constituents and antifungal, antialgal, and antitermite bioactivities.
abstract: The chemical components of tarbush (Flourensia cernua) leaves were fractionated by extracting successively with hexanes, diethyl ether, and ethanol. Volatile profiles of each fraction were identified by using GC-MS. The hexanes fraction contained mostly monoterpenoids, while the ethanol fraction volatiles were primarily sesquiterpenoids. Crude fractions were tested for activity against fungi, algae, and termites. Application of as little as 1 microg of the essential oil from the hexanes fraction was sufficient to provide visible antifungal activity in bioautography assays. The diethyl ether fraction showed selective activity against the cyanobacterium responsible for the 2-methylisoborneol-induced off-flavor sometimes associated with catfish farming operations. All three fractions exhibited a high degree of antitermite activity.
authors.affiliation: USDA/ARS Natural Products Utilization Research Unit, University, Mississippi 38677, USA. matellez@olemiss.edu
authors.forename: M
authors.initials: M
authors.lastname: Tellez
authors.forename: R
authors.initials: R
authors.lastname: Estell
authors.forename: E
authors.initials: E
authors.lastname: Fredrickson
authors.forename: J
authors.initials: J
authors.lastname: Powell
authors.forename: D
authors.initials: D
authors.lastname: Wedge
authors.forename: K
authors.initials: K
authors.lastname: Schrader
authors.forename: M
authors.initials: M
authors.lastname: Kobaisy
mesh_terms: D000818:Animals; D000935:Antifungal Agents / Q000494:pharmacology; D019659:Asteraceae / Q000737:chemistry*; D001681:Biological Assay; D004353:Drug Evaluation, Preclinical; D056890:Eukaryota / Q000187:drug effects; D008401:Gas Chromatography-Mass Spectrometry; D007306:Insecticides / Q000494:pharmacology; D020049:Isoptera / Q000187:drug effects; D009822:Oils, Volatile / Q000494:pharmacology; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D012717:Sesquiterpenes / Q000302:isolation & purification / Q000494:pharmacology*; D014835:Volatilization
chemical_list: D000935:Antifungal Agents; D007306:Insecticides; D009822:Oils, Volatile; D010936:Plant Extracts; D012717:Sesquiterpenes