Migration of Nanosilver into Food-simulating Solutions from Polypropylene Disposable Spoons

摘要

The aim of this study was to investigate the possible migration of nanosilver from the commercially available nanosilver antibacterial disposable spoons to food simulating solutions and find out a relationship between migration and conformance with the external conditions. Migration experiments were carried out according to the Chinese standard (GB/T 5009.60-2003), to cover a variety of food simulants and use conditions. Several experimental factors influenced nanosilver release: food simulant, temperature and storage time. An Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) was employed to quantify the total and migrated silver concentration and results demonstrated an increasing migration of nanosilver with storage time and temperature conditions. Meanwhile, Scanning Electron Microscopy/Energy Dispersive Spectrometer (SEM/EDS) was applied to identify the existence and the morphology of nanosilver.