Moulds are filamentous fungus that may grow on a wide range of surfaces, including built surfaces, food, decaying organic debris, and humid environments. Mould development is distinguished by an unpleasant odour and an unsightly look in confined or non-ventilated areas. They pose a health risk due to their propensity to create and release mycotoxins, which are harmful to both animals and humans. This research aimed to assess the antifungal activity of silver nanoparticles (AgNPs) capped with oleylamine (OLA), which can be utilized to effectively inhibit mould development. The produced AgNPs had a maximum absorbance at 409 nm in the ultraviolet-visible (UV-Vis) spectrum and a particle size of 8.44 ± 1.73 nm, from transmission electron microscopy (TEM) images. The OLA-capped AgNPs had a face-centred cubic (fcc) structure, comparable to bulk silver, with diffraction peaks at 38.3°, 44.5°, 64.7° and 77.9°, which are indexed to the (111), (200), (220) and (311) lattice planes. The existence of elemental silver was confirmed using energy dispersive spectroscopy (EDS) which showed the predominant amount of silver, oxygen, and carbon. Tests for fungal growth that causes mould revealed that AgNPs remarkably inhibit growth in a dose-dependent manner.
Citation: Mining JK, Moloto MJ, Omwoyo WN, Menge D, Maboya WK. 2023. Anti-moulding Activity of Oleylamine-capped Silver Nanoparticles. J Food Chem Nanotechnol 9(2): 88-93.