Table 5. MIC and MBC of four essential oils (% v/v) against two common pathogens

Sample		Microorganisms
		Staphylococcus aureus		Klebsiella pneumoniae
Essential oils (%, v/v)	Picea koraiensis	MIC	3	MIC	1
		MBC	> 12	MBC	12
	Abies nephrolepis	MIC	2	MIC	2
		MBC	8	MBC	3
	Picea abies	MIC	3	MIC	1.5
		MBC	12	MBC	4
	Tsuga sieboldii	MIC	3	MIC	1
		MBC	6	MBC	2
Positive control (mg/mL)	Ampicillin	MIC	0.019	MIC	0.15
		MBC	0.039	MBC	0.50

Ampicillin (10 mg/mL; serial dilution) was used as the positive control.
MIC: minimum inhibitory concentration (% v/v), MBC: minimum bactericidal concentration (% v/v).