The chemical constituents of the essential oil obtained by hydrodistillation from the leaves of Calycolpus moritzianus (O. Berg) Burret, syn Psidium caudatum Mc Vaught, collected in November 2006 in Mérida State, Venezuela, were identified by GC-MS analysis. Thirty components (91.1% of the sample) were identified, of which the seven major ones were β-caryophyllene (21.9%), α-pinene (10.9%), viridiflorol (9.7%), β-selinene (6.1%), α-copaene (6.3%), α-selinene (5.3%) and γ-eudesmol (5.1%). The oil was found to have antibacterial activity against Staphylococcus aureus ATCC (6538) and Enterococcus faecalis ATCC (29212), with MIC values of 60 μg/mL and 180 μg/mL, respectively.
JonesS. (1987) Sistematica Vegetal. Mexico, D.F. p. 384–385.
2.
Lista de Trabajo para el Nuevo Catálogo de la Flora de Venezuela. (1998) Fundación Instituto Botánico de Venezuela. Caracas.
3.
AristeguietaL. (1973) Familias y Géneros de los Árboles de Venezuela. Instituto Botánico, Dirección de Recursos Naturales Renovables, Ministerio de Agricultura y Cría, Caracas, 541p.
4.
YánezX, PinzónM, SolanoF, SánchezL. (2002) Chemical composition of the essential oil of Psidium caudatum M.C. Vaugh. Molecules, 7, 712–716.
5.
TuckerA, MaciarelloM. (1993) Volatile leaf oils of American Myrtaceae II. Calycolpus warzewiczianus. Berg. of Costa Rica. Journal of Essential Oil Research, 5, 561–562.
6.
TuckerA, MaciarelloM. (2000) Volatile leaf oils of Calycolpus australis Landrum (Mytaceae). Journal of Essential Oil Research, 12, 149–150.
7.
ThéoC, OrionaldaF, FernandesS, SantosC, OliveiraL, LiãoP, FerriJ, PaulaH, FerreiraB, SilvaM. (2000) Antifungal activity of volatile constituents of Eugenia dysenterica leaf oil. Journal of Ethnopharmacology, 72, 111–117.
8.
MichelM, GutmanL. (1997) Methicillin-resistant Staphylococcus aureus and vancomycin –resistant enterococci: therapeutic realities and possibilities. Lancet, 397, 1901–1906.
9.
VelazcoE, NievesB, AraqueM, CalderasZ. (2002) Epidemiología de infecciones nosocomiales por Staphylococcus aureus en una ciudad de alto riesgo neonatal. Enfermedades Infecciosas y Microbiología Clínica, 20, 321–325.
10.
PicazoJ, BeutriC, RodríguezI, CulebrasE, GomezM. (2004) Vigilancia de resistencia a los antimicrobianos: Estudio VIRA. Enfermedades Infecciosas y Microbiología Clínica, 22, 517–525.
11.
GuzmanM, LozadaR. (2007) Deteccion de Staphylococcus aureus meticilinoresistentes de pacientes con infecciones nosocomiales y adquiridas en la comunidad. Revista de la Sociedad Venezolana de Microbiología, 27, 45–49.
12.
BorgM, SciclunaE, KrakerM, de Sande-Bruinsma, TiemersmaE, GürE, RedjebB, RasslanO, ElnassarZ, BenbachirMD, PieridouB, RahalK, DaoudZ, GrundmannH, MonenJ. (2006) Antibiotic resistence in the southeastern Mediterranean-preliminary results from the ARMed project. Eurosurveillance, 11, 164–167.
13.
HurtadoMP, De La ParteMA, BritoA, TapiaI, CarmonaC. (2004) Resistencia de Staphylococcus aureus a los antimicrobianos en Venezuela 1988–1998. Archivos Venezolanos de Farmacología y Terapéutica, 23, 159–165.
14.
AlvarezC, CortesJ, ArangoA, CorreaC, LealA. (2006) Resistencia antimicrobiana en Unidades de Cuidado Intensivo de Bogotá, Colombia, 2001 – 2003. Revista de salud Pública, 8, 86–101.
15.
ToledoC, PerezM, RocchiM, GribaudoG, MangiaterraS, MonterisiA. (2004) Aislamiento de especies de Enterococcus causantes de infecciones y su sensibilidad a los antimicrobianos. Revista Argentina Microbiológica, 36, 31–35.
SandraP, BicchiC. (1987) Capillary Gas Chromatography in Essential Oil Analysis. Huethig, Heidelberg.
18.
AdamsR. (1995) Identification of Essential Oils Components by Gas Chromatography/Mass Spectroscopy. Allured Publishing Corporation, Carol Stream IL, USA.
19.
DaviesN. (1990) Gas chromatographic retention indices of monoterpenes and sesquiterpenes on methyl silicone and Carbowax 20 M phases. Journal of Chromatography A, 503, 1–24.
20.
RondonM, VelascoJ, MoralesA, RojasL, CarmonaJ, GualtieriM, HernándezV. (2005) Composition and antibacterial activity of the essential oil of Salvia leucantha Cav. cultivated in Venezuela Andes. Revista Latinoamericana de Química, 33, 40–44.
21.
Clinical and Laboratory Standards Institute.Performance standards for antimicrobial susceptibility testing; Sixteenth informational supplement. CLSI (2007) Clinical and Laboratory Standards Institute, 940 West Valley Road, Suite 1400, Wayne, Pennsylvania, USA, 19087–1898.
