Chemical composition of 8 eucalyptus species' essential oils and the evaluation of their antibacterial, antifungal and antiviral activities

Table 5 Cytotoxicity effect and antiviral activity of eight Eucalyptus essential oils

Essential oils	СС₅₀ ^*)(mg/mL, ± SD)	Concentrations (mg/mL)	Antiviral activity
Essential oils	СС₅₀ ^*)(mg/mL, ± SD)	Concentrations (mg/mL)	Pre-treatment of cells	IC₅₀(mg/ml)	SI	Pre-treatment of virus	IC₅₀(mg/ml)	SI
E. cin	204.5 ± 0.35^b•)	150	66.5	131^b	1.56^a	71	102^c	2^a
		75	0			54
		37.5	0			0
E. sid	247.3 ± 0.9^c	150	0	Nd	Nd	0	Nd	Nd
		75	0			0
		37.5	0			0
E. mai	253.5 ± 0.35^c	150	29	233.5^c	1.08^a	62.5	136.5^d	1.85^a
		75	0			0
		37.5	0			0
E. leh	15 ± 00.0^a	15	0	Nd	Nd	0	Nd	Nd
		7.5	0			0
		3.75	0			0
E. bic	16 ± 00.0^a	15	0	4.8^a	3.33^b	0	0.7^a	22.8^b
		7.5	66.5			87.5
		3.75	37.5			83
E. ast	15.7 ± 0.14^a	15	0	Nd	Nd	83	8.4^b	1.86^a
		7.5	0			46
		3.75	0			25
E. leu	14.9 ± 0.07^a	15	0	Nd	Nd	0	Nd	Nd
		7.5	0			0
		3.75	0			0
E. odo	6.2 ± 0.14^a	6	0	Nd	Nd	0	Nd	Nd
E. odo	6.2 ± 0.14^a	3	0	Nd	Nd	0	Nd	Nd
		1.5	0			0

^*) Values were expressed as a cytotoxic concentration ± SD of duplicate determination.
·) Values with different letters differ significantly by Duncan's multiple range test (p < 0.05).
Nd: Not determined.

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