Abstract
In this study we reported the synthesis of L-phenyl alanine (Phe) & L-tyrosine (Tyr)
Natural Amino acids coated iron oxide magnetic nanoparticles under one-pot and in
situ reaction. Functionalized iron oxide magnetic nanoparticles were characterized
by X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric
analysis (TGA), Vibrating Sample Magnetometer (VSM), Fourier transform infrared spectroscopy
(FTIR), Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM)
techniques. Cellular toxicity of amino acids coated iron oxide magnetic nanoparticles
was also investigated on HEK-293 cell lines. Additionally, a hemolysis test of as
prepared magnetic nanoparticles were performed. It was found that the synthesized
Phe and Tyr coated magnetic nanoparticles (F@Phe NPs and F@Tyr NPs) were spherical
in shape with an average size less than 25 nm, also the saturation magnetization (Ms)
of the F@Phe NPs and F@Tyr NPs were about 30.02 and 58.23 emu/g, respectively, which
was lower than those of bare Fe3O4. The TGA results show that apart from this weight loss, the coated sample shows a
weight loss of 5.48, and 6.88% respectively corresponding to loss of Tyr, and Phe
which is coated on the Fe3O4 nanoparticles. At a high concentration, less than 2.92 and 3.13% hemolytic activity
were observed for F@Phe NPs and F@Tyr NPs, respectively. The F@Phe NPs and F@Tyr NPs
show the possibility of using this nanoparticles in the development of in vitro and
in vivo pharmaceutical and biomedical fields due to do not possess a toxic effect,
good ζ-potential and related small and narrow size distribution.
Key words
Magnetic nanoparticles - Amino acid - Functionalization - Tyrosine - Phenyl alanine
- Biocompatibility