. 2020 Jan-Mar;11(1):25–29. doi: 10.4103/japtr.JAPTR_74_19

Table 3.

Fractional inhibitory concentration, fractional inhibitory concentration index, and outcome of interactions between Rosmarinus officinalis essential oil and carvacrol against Bacillus subtilis

Components	MIC % (v/v)		FIC% (v/v)	FICI	Outcome
Components	Alone	In combination	FIC% (v/v)	FICI	Outcome
EO	0. 0625	0.031	0.496	0.527	Partial synergy
Carvacrol	0.125	0.0039	0.0312	0.527	Partial synergy
EO	0. 0625	0.015	0.24	0.36	Synergistic
Carvacrol	0.125	0.015	0.12	0.36	Synergistic
EO	0. 0625	0.007	0.112	0.36	Synergistic
Carvacrol	0.125	0.031	0.248	0.36	Synergistic
EO	0. 0625	0.0019	0.030	0.526	Partial synergy
Carvacrol	0.125	0.062	0.496	0.526	Partial synergy

FIC: Fractional inhibitory concentration, MIC: Minimum inhibitory concentration, EO: Essential oil, FICI: Fractional inhibitory concentration index