Evaluation of Antibacterial Activity of Essential Oils and Their Combination against Multidrug-Resistant Bacteria Isolated from Skin Ulcer

Table 5

The mean fractional inhibitory concentration index for MDR bacteria at KMU, 2020.

Mixture of oil in 1 : 1 ratio	Gram positive		Gram negative
	MRSA	VRE	MDR K. pneumoniae	ESBL producing bacteria
				E. coli	P. aeruginosa
D. penninervium	0.75	1.25	0.625	0.75	1.0
C. pustulatus
C. pustulatus	0.75	0.375	0.5	1.5	3.0
R. abyssinicus
D. penninervium	0.3125	0.375	0.3125	0.5	0.5
R. abyssinicus

The values represent mean fractional inhibitory concentration index (n = 6), where X = synergy interaction, X = partial synergy, X = indifference interaction, and X = antagonistic interaction of essential oil.