In Vitro Cytotoxic Potential of Essential Oils of Eucalyptus benthamii and Its Related Terpenes on Tumor Cell Lines

Table 1

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

Volatile compound	RT	RI	Peak area (%)		Identification
			YLEO	ALEO
α-pinene	4.90	935	36.82	36.92	RI, MS
β-pinene	5.90	977	nd	0.48	RI, MS
p-cimene	7.27	1024	1.59	1.90	RI, MS
Limonene	7.39	1028	0.81	0.90	RI, MS
γ-terpinene	8.38	1058	5.51	4.38	RI, MS
(E)-pinocarveol	11.29	1138	nd	0.84	RI, MS
terpinen-4-ol	12.82	1177	1.23	1.05	RI, MS
α-terpineol	13.39	1192	1.32	2.02	RI, MS
α-gurjunene	22.25	1406	1.70	1.29	RI, MS
Aromadendrene	23.50	1437	15.94	12.40	RI, MS
allo-aromadendrene	24.30	1457	1.98	1.48	RI, MS
Viridiflorene	25.69	1492	1.47	1.13	RI, MS
Globulol	29.25	1584	20.54	20.22	RI, MS
Viridiflorol	29.47	1590	1.63	3.13	RI, MS
Rosifolius	29.84	1599	1.63	1.60	RI, MS
10-epi-γ-eudesmol	30.59	1620	1.78	1.64	RI, MS
Compounds identified
Monoterpene hydrocarbons			44.73	44.58
Oxygenated monoterpenes			2.55	3.91
Sesquiterpene hydrocarbons			21.09	16.30
Oxygenated sesquiterpenes			25.58	26.59

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