Coated and Uncoated Magnetic Iron Oxide Nanoparticles: Toxicity Assessment and Properties of Non Accumulation in Biological Tissues

Abstract

Background: There are an increasing number of studies on magnetic nanofeeders with multiple applications in agriculture and food processing. Among the magnetic separation oxides, iron oxide has emerged as an indispensable tool in nanoscale differentiation, especially bio-nanoscale. This is attributed to the characteristics of such as size, shape, magnetism and coexistence. Aim of the study: The aim of this study feeding experiment is to prove the non-toxicity of magnetic nano-iron oxides, whether coated when dosed with distilled water or uncoated in milk or distilled water. Subject, materials and methods: Materials: magnetic iron oxide nanoparticles was obtained from SkySpring Nanomaterials (U.S.A.) at a size of 30 nm. Acacia gum (Gum Arabic) is prepared from Thomas Baker (Indian), Sodium hydroxide from Riedel-de Haën (Germany), Potassium phosphate dibasic from CDH (Indian), Potassium phosphate mono basic from HIMEDIA (Indian),Potassium bromide from AVONCHEM(UK), MNPs are characterized by various tools to examine their physicochemical properties. The size of NPs plays a major role in exhibiting different physicochemical properties, and even a small difference in their nanoscale dimensions can alter their properties. Some of the instruments used for their characterization are Atomic Force Microscopy (AFM), Energy Dispersive X-ray Diffraction (EDXD), Field-Emission Scanning Electron Microscopy (FE-SEM), Fourier Transform Infrared Spectrometer. Results: After the completion of the experimental period for this study (28 days), the laboratory animals were sacrificed using ether anesthesia. The animals were then dissected using dissection tools to remove these organs. The organs were weighed using a sensitive balance after being washed with 0.9% normal saline solution and dried with filter paper [1][2]. The liver, kidneysamples were collected in pre-labeled plastic containers and preserved in 10% formalin until histological sectioning could be performed. Tissue sections were performed for all organs - liver, kidney and they were placed under a microscope. The results showed no damage to these organs. Conclusion: The findings suggest that both arabic gum-coated and milk-coated magnetic iron oxide nanoparticles, at the tested doses and treatment durations, did not induce observable tissue damage or pathological alterations in the kidneys or liver of the treated rats.