Table 1.

The IC₅₀ values (µg/mL) of ethanol and water Kalanchoe species extracts on different cell lines.

Cell line	Extracts	RTCA K. daigremontiana	MTT K. daigremontiana	RTCA K. pinnata	MTT K. pinnata	RTCA K. blossfeldiana	MTT K. blossfeldiana	RTCA Vinblastine
HeLa	Ethanol	>100* R2 = 0.86	>100*	61.67 ± 2.34 R2 = 0.96	>100	8.28 ± 0.29* R2 = 0.97	9.63 ± 1.07*	4.55−03 R2 = 0.94
	Water	18.86 ± 0.29 R2 = 0.86	11.48 ± 0.43	>100 R2 = 0.79	>100	>100 R2 = 0.87	>100
SKOV-3	Ethanol	>100* R2 = 0.83	>100*	49.03 ± 2.63 R2 = 0.97	>50	8.98 ± 0.1 R2 = 0.98	11.44 ± 0.35	7.64−03 R2 = 0.93
	Water	14.39 ± 3.59 R2 = 0.86	10.12 ± 0.28	>100 R2 = 0.86	>100	>100 R2 = 0.68	>100
MCF-7	Ethanol	45.93 ± 2.94* R2 = 0.90	>50*	>100 R2 = 0.98	>100	53.27 ± 5.37 R2 = 0.96	>50	7.49−03 R2 = 0.95
	Water	>100 R2 = 0.96	>100	>100 R2 = 0.81	>100	>100 R2 = 0.76	>100
A375	Ethanol	>100* R2 = 0.83	>100*	>100 R2 = 0.99	>100	52.08 ± 9.67 R2 = 0.97	36.79 ± 1.27	7.72−03 R2 = 0.92
	Water	35.32 ± 0.33 R2 = 0.98	36.05 ± 3.15	>100 R2 = 0.98	>100	>100 R2 = 0.75	>100

*These values were obtained in our previous study (Stefanowicz-Hajduk et al. 2019, 2020).

R²: The coefficient of determination.

Bold values indicate the highest activity of Kalanchoe species extracts.