Sonochemical synthesis of gold nanoparticles mediated by potato starch: Its performance in the treatment of esophageal cancer

Economically viable and eco-friendly potato starch (PS) was employed to synthesize Au NPs under ultrasound irradiation. PS phytochemicals have the function of a green reductant as well as an efficient stabilizer template to cap and synthesize gold nanoparticles. Transmission electron microscopy (TEM), UV-Vis spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) were applied to investigate the structure of the synthesized PS-Au NPs nanocomposite. FESEM results showed that the obtained Au NPs were spherical and ∼30 nm in diameter; their crystalline nature was detected by XRD and TEM data. PS-Au NP nanocomposite shows high antioxidant effects against DPPH. The colorimetric MTT investigation was followed in the determination of anti-esophageal cancer properties of the PS-Au NP nanocomposite against KYSE-30 and FLO-1 cell lines. The findings indicate that in 3 days, the cancer cell survival percentage in various dilations reduced as much as the PS-Au NP nanocomposite concentration increased. The best anti-cancer effect of the PS-Au NP nanocomposite was reported at 1,000 μg/mL dilation. Through MTT cytotoxicity analysis the half-maximal inhibitory concentration of PS-Au nanocomposite or IC50 values against the KYSE-30 and FLO-1 esophageal carcinoma cells were found as 125 and 176 μg/mL, respectively. The data indicated that these PS-Au NP nanocomposites inhibited esophageal cancer cells more strongly than normal cells.