Antioxidant and Anti-tyrosinase Activities of Palladium Nanoparticles Synthesized Using Saururus chinensis
This paper reports the phytosynthesis of palladium nanoparticles (PdNPs) using a Saururus chinensis (S. chinensis) leaf extract, which is believed to act as a bioreductant and stabilizer. Ultraviolet/visible spectroscopy was performed to confirm the formation of PdNPs. Fourier transform infrared spectroscopy was performed to recognize the possible bioactive molecules, such as polyphenols and flavonoids present in the S. chinensis leaf extract responsible for the reduction and stabilization of PdNPs. X-ray diffraction revealed the crystallinity of the nanoparticles. The mean particle size and their elemental composition were determined by transmission electron microscopy coupled with energy dispersive X-ray analysis (EDS). The PdNPs were spherical in shape with a mean size of ~4 nm. The EDS showed strong optical absorption peak at ~2.8 keV, confirmed the formation of PdNPs. The PdNPs exhibited moderate antioxidant and potent antityrosinase activities.
KeywordsPalladium nanoparticles Ultrasonication Saururus chinensis Antioxidant Anti-tyrosinase
This study was supported by the Nano Material Technology Development Program of the Korean National Research Foundation (NRF) funded by the Korean Ministry of Education, Science, and Technology (2012M3A7B4049675). This work was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (NRF-2014R1A2A1A11052391) and Priority Research Centers Program (2014R1A6A1031189).
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