Extracts of Flourensia cernua (L): Volatile Constituents and Antifungal, Antialgal, and Antitermite Bioactivities.

Autor: Tellez, Mario, Estell, Rick, Fredrickson, Ed, Powell, Janine, Wedge, David, Schrader, Kevin, Kobaisy, Mozaina
Zdroj: Journal of Chemical Ecology; Nov2001, Vol. 27 Issue 11, p2263-2273, 11p
Abstrakt: 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 μg 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index