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Nanoparticles due to their unique physicochemical properties have been used in the biotechnology and agriculture especially on the plant growth and its biological activities. The TiO 2  and ZnO nanoparticles were synthesized via sol-gel method. The effect of TiO 2  and ZnO nanoparticles (100, 200 and 500 mg/L) on the improvement of biological properties of dichloromethane fraction (DF) of  C. arabicus  (the largest species in the Costaceae plant family) root smoke was studied. The synthesized nanoparticles were characterized using X-ray powder diffraction, energy dispersive X-ray spectroscopy, Fourier transform infrared and field emission scanning electron microscopy analysis. The antibacterial and antifungal activities were well improved by coupling of DF and ZnO nanoparticles. The synthesized DF/TiO 2  (200 mg/L) exhibited the maximum free radical scavenging activities up to the IC 50  = 8.31 µg/mL. The synthesized 0.1% DF showed the maximum antiparasitic activity against protoscoleces after 5 and 10 min (100% inhibition).

inorganic and nano-metal chemistry

Dispersion of TiO 2  and ZnO nanoparticles into the  Costus arabicus  L. root smoke for enhancing its antimicrobial, antioxidant and antiparasitic activities