Green-Synthesized SeO/ZnO Nanocomposites from Musa acuminata Peel: Implications for Anticancer and Antimicrobial Strategies in Public Health
Keywords:
SeO/ZnO NCs, Green synthesis, Anticancer activity, Antibacterial activity, Antioxidant activityAbstract
An eco-friendly one-pot approach was employed to biosynthesize selenium oxide/zinc oxide (SeO/ZnO) nanocomposites using banana peel (Musa acuminata L.) extract. The phytogenic nanocomposite was characterized using FTIR, UV–Vis spectroscopy, TEM, SEM, and EDX analyses. A distinct absorbance peak at 336 nm confirmed nanocomposite formation, while FTIR results indicated the involvement of plant phytochemicals in stabilization and surface functionalization processes. TEM images revealed quasi-spherical nanoparticles with an average diameter of 64 nm. Elemental analysis (EDX) confirmed the presence of selenium and zinc, suggesting that selenium is predominantly present in oxide form (SeO) within the ZnO matrix. Biological evaluations showed significant multifunctional activity. The SeO/ZnO nanocomposite exhibited selective antiproliferative activity against A549 lung cancer cells (IC₅₀ = 100.9 µg/mL) compared to normal Vero cells (IC₅₀ = 263.5 µg/mL), indicating favorable selectivity. Pronounced antibacterial activity was observed, particularly against Bacillus subtilis (MIC = 62.5 µg/mL; inhibition zone = 27.8 ± 0.75 mm). Concentration-dependent antioxidant activity was confirmed using DPPH and ABTS assays, with IC₅₀ values of 256.8 and 339.40 µg/mL, respectively.