Table 1: Chemical composition of the essential oil from young and adult leaves of E. benthamii.

Volatile compound RT RIPeak area (%) Identification
YLEOALEO

α-pinene4.9093536.8236.92RI, MS
β-pinene5.90977nd0.48RI, MS
p-cimene7.2710241.591.90RI, MS
Limonene7.3910280.810.90RI, MS
γ-terpinene8.3810585.514.38RI, MS
(E)-pinocarveol11.291138nd0.84RI, MS
terpinen-4-ol12.8211771.231.05RI, MS
α-terpineol13.3911921.322.02RI, MS
α-gurjunene22.2514061.701.29RI, MS
Aromadendrene23.50143715.9412.40RI, MS
allo-aromadendrene24.3014571.981.48RI, MS
Viridiflorene25.6914921.471.13RI, MS
Globulol29.25158420.5420.22RI, MS
Viridiflorol29.4715901.633.13RI, MS
Rosifolius29.8415991.631.60RI, MS
10-epi-γ-eudesmol30.5916201.781.64RI, MS
Compounds identified
 Monoterpene hydrocarbons44.7344.58
 Oxygenated monoterpenes2.553.91
 Sesquiterpene hydrocarbons21.0916.30
 Oxygenated sesquiterpenes25.5826.59

Legend: YLEO: young leaves essential oil; ALEO: adult leaves essential oil; RT: retention time; RI: retention index; MS: mass spectroscopy; nd: not detected.