Continuous A549 cells were grown in the culture medium containing DMEM medium with 10% FBS, and 1% Pen-Strep antibiotics, and incubated at 37 °C in a humidified incubator with 5% CO2. Confluent A549 cell was tripsinized and seeded at 5×104 cells/well in 96-well microplates, incubated for 24 h at 37 °C to allowed cell attached onto the plate. Then the culture medium was discarded and fresh medium culture contained different concentrations of the extract were added and incubated for 24 h. The 50% inhibitory concentration (IC50) was defined by the MTT method. Briefly, the medium of the treated cells was removed, then 100 μL of medium containing 0.5 mg/mL MTT was added to each well. After incubation at 37 °C with 5% CO2 incubator for 4 h, 100 μL of 10% SDS was added and mixed to release the purple color from the cells. Last incubation was performed again in the dark for 24 h, before optical density was measured at 570 nm using ELISA reader (Sadeghi-aliabadi et al. 2008; Heny et al. 2012).