Activity of Medicinal Plant Extracts on Multiplication of Mycobacterium tuberculosis under Reduced Oxygen Conditions Using Intracellular and Axenic Assays

Table 2

Cytotoxicity of the four plants used in intracellular assay using A549 cells.

Plant	Extract (100 µg/mL)	% viability of A549 cells
A. calamus	Acetone	96 ± 3
	Ethanol	113 ± 7
	Aqueous	102 ± 32
O. sanctum	Acetone	97 ± 5
	Ethanol	73 ± 14
	Aqueous	114 ± 19
P. nigrum	Acetone	90 ± 7
	Ethanol	98 ± 19
	Aqueous	118 ± 11
P. tuberosa	Acetone	118 ± 20
	Ethanol	97 ± 19
	Aqueous	82 ± 14

Values represent mean ± SD of % viable A549 cells from two independent assays.