Table 4.

Minimal Bactericidal Concentrations of plant-derived compounds against L. monocytogenes strains.

Compound	MBC, Approximate Range 1 (μg/mL)	MBC as Defined in References 2	Strains(s) Used in the Study	References
carvacrol	150–300	150–300 mg/L 3	56LY	[61]
	250	0.25 μL/mL	NCTC 11994, S0580	[60]
	255	1.7 mmol/L	IID 581	[75]
	751	5.0 mM	ATCC 19115, Scott A, Presque-598	[79]
	1770	1.77 mg/mL	MBC was determined for bacterial pool of strains: ATCC 7644, 7459 and J11	[80]
cinnamaldehyde	92	91.66 μg/mL	MTCC 657	[66]
	1004	7.6 mmol/L	IID 581	[75]
	3965	30 mM	CRIFS C717	[81]
trans-cinnamaldehyde	500	0.5 μL/mL	NCTC 11994, S0580	[60]
	661	5.0 mM	ATCC 19115, Scott A, Presque-598	[79]
citral	80–100	0.08–0.1 mg/mL	EGD, Scott A, C882	[68]
	250–450	250–450 mg/L 3	56LY	[61]
eugenol	67	66.66 μg/mL	MTCC 657	[66]
	100	0.1 mg/mL	EGD, Scott A, C882	[68]
	821	5 mM	CRIFS C717	[81]
	1000	1 μL/mL	NCTC 11994, S0580	[60]
	1002	6.1 mmol/L	IID 581	[75]
	3087	18.5 mM	ATCC 19115, Scott A, Presque-598	[79]
isoeugenol	1248	7.6 mmol/L	IID 581	[75]
thymol	496	3.3 mmol/L	IID 581	[75]
	496	3.3 mM	ATCC 19115, Scott A, Presque-598	[79]
	500	0.5 μL/mL	NCTC 11994, S0580	[60]
	500	0.5 mg/mL	Scott A	[70]
(E)-2-hexenal	325–1400	325–1400 mg/L 3	56LY	[61]
diglycerol monocaprinate	200	0.02%	IID 581	[75]
diglicerol monolaurate	100	0.01%	IID 581	[75]
diglycerol monomyristate	200	0.02%	IID 581	[75]

¹ Values were converted for ease of comparison; density was assumed as 1 g/mL for all of the compounds, and molecular weights were obtained from PubChem [78]; ² Presented range of the values, if not specified otherwise, refers to results obtained for different strains used in the study; ³ Depending on the level of the initial contamination—from 2 to 6 log CFU/mL (higher contamination resulted in higher MICs).