Aloe-Vera vs Poly(Ethylene)glycol-based Synthesis of ZnO Flower Nanoneedle Morphology and Evaluation of Their Antibacterial Properties
Paper ID : 1158-ICNS
Authors:
marzieh keykhaei *1, Najmeh Najmoddin2, pardis heydari1
1Department of Biomedical Engineering, Islamic Azad University, Science and Research Branch, Tehran, IRAN
2Department of Biomedical Engineering, Islamic Azad University, Science and Research Branch, Tehran, Iran
Abstract:
Green synthesis approach using eco-friendly biological precursors has gained much more interest in the synthesis of several inorganic nanomaterials. In this study, the antibacterial properties of zinc oxide nanoneedles synthesized by wet chemical method were investigated in the presence of natural Aloe vera extract (ZnO-Aloe vera) versus industrial surfactant (polyethylene glycol 6000) (ZnO-PEG). The X-ray diffraction (XRD) method showed that both samples contained crystalline hexagonal structure without any impurities. The shape and size of these nano-objects were evaluated by field emission scanning electron microscopy (FESEM). The results showed that the morphology of nano-objects is needle-like. Bacterial resistance and minimum inhibitory concentration (MIC) of zinc oxide nanoneedles against Escherichia coli (E. Coli) strains of gram-negative bacteria and Staphylococcus (S. Aureus) strains of gram-positive bacteria were evaluated. The results showed the effectiveness of ZnO-Aloe vera against S. aureus and E. coli exhibiting the MIC value of 0.016 g/ml for both types of strain while ZnO-PEG showed no antibacterial activity.
Keywords:
ZnO; Antibacterial activity; Needle-like; Aloe vera; PEG
Status : Abstract Accepted (Poster Presentation)