caryophyllene and elemol

The objective of this study was to investigate in vitro antimicrobial activity and composition of the essential oil of Cyclotrichium leucotrichum growing wild in Iran. The essential oil was obtained by hydro-distillation and analysed by GC-FID and GC/MS. Fifty-nine components representing 98.9% of the total oil were characterised. The essential oil which has 1,8-cineol (14.8%), elemol (12.6%), spathulenol (9.4%), E-caryophyllene (5.7%) and hinesol (5.7%) as its main components, exhibited moderate activity against seven bacteria and a yeast, Candida albicans, with minimum inhibitory concentration values ranging from 0.5 to 64 mg mL(-1) and minimum bactericidal concentration values ranging from 2 to >64 mg mL(-1), respectively. The best inhibitory effects were against three gram-positive bacteria and tested yeast, C. albicans.

Topics: Anti-Infective Agents; Candida albicans; Iran; Oils, Volatile; Polycyclic Sesquiterpenes; Sesquiterpenes; Spiro Compounds

The metabolism of (+)-longifolene, (-)-caryophyllene, (-)-caryophyllene oxide, (-)-cyclocolorenone, (+)-nootkatone, (-)-elemol, (-)-abietic acid and (+)-dehydroabietic acid was studied in rabbits. Each of these sesquiterpenoids was converted to primary, secondary or tertiary alcohols, among which the primary alcohol was predominant. A vinylic methyl group and an exomethylene group were easily hydroxylated and converted to a glycol via an epoxide in many cases. Eight new metabolites were determined by chemical and spectroscopic methods.

Topics: Abietanes; Animals; Biotransformation; Diterpenes; Phenanthrenes; Polycyclic Sesquiterpenes; Rabbits; Sesquiterpenes