The essential oils from leaves of E. caracasana Boiss collected from Miyoi, Pueblo Llano, Mérida State at 1800 m above sea level and leaves of E. cotinifolia L collected from Manzano Alto-Ejido, Mérida State at 1520 m were analyzed by GC/MS. β-Caryophyllene (33.7 %), α-humulene (18.8 %) and aromadendrene (8.4 %) were the major constituents of E. caracasana oil, whereas those of E. cotinifolia oil were β-caryophyllene (39.3 %), germacrene-D (21.5 %) and α-copaene (9.3 %).
WebsterG. (1994) Systematics of the Euphorbiaceae: Introduction. Annals of the Missouri Botanical Garden, 81, 33–144.
2.
SinglaA, PathakK. (1990) Phytoconstituents of Euphorbia species. Fitoterapia, 61, 483–516.
3.
HohmannJ, RédeiD, ForgoP, MolnárJ, DombiG, ZorigT. (2003) Jatrophane diterpenoids from Euphorbia mongolica as modulators of the multidrug resistance of L5128 mouse lymphoma cells. Journal of Natural Products, 66, 976–979.
4.
HabaH, LavaudC, HarkatH, AlabdulA, MarcourtL, BenkhaledM. (2007) Diterpenoids and triterpenoids from Euphorbia guyoniana. Phytochemistry, 68, 1255–1260.
5.
HohmannJ, MolnárJ, RédeiD, EvanicsF, ForgoP, KálmánA, ArgayG, SzaboP. (2002) Discovery and biological evaluation of a new family of potent modulators of multidrug resistance: reversal of MDR of mouse lymphoma cells by new natural jatrophane diterpenoids isolated from Euphorbia species. Journal of Medicinal Chemistry, 45, 2425–2431.
6.
JassbiA. (2006) Chemistry and biological activity of secondary metabolites in Euphorbia from Iran. Phytochemistry, 67, 1977–1984.
7.
RojasJ, VelascoJ, MoralesA, DíazT, MecciaG. (2008) Evaluation of antibacterial activity on different solvent extracts of Euphorbia caracasana Boiss. and Euphorbia cotinifolia L. (Euphorbiaceae) collected in Venezuela. Blacpma, 7, 199–202.
8.
RojasR, VelascoJ, RojasLB, DíazT, CarmonaJ, MoralesA. (2007) Chemical Composition and Antibacterial Activity of the Essential Oil of Baccharis latifolia Pers. and B. prunifolia H. B. & K. (Asteraceae). Natural Product Communications, 2, 1245–1248.
9.
AdamsR. (1995) Identification of essential oil components by GC/MS.Allured Publishing Corporation, Carol Stream IL, USA.
10.
DaviesN. (1990) Gas chromatographic retention indices of monoterpenes and sesquiterpenes on methyl silicon and carbowax 20 M. phases. Journal of Chromatography A, 503, 1–24.
