chapter  17
14 Pages

QUANTITATIVE ASSESSMENT OF FUNGICIDAL AND BACTERICIDAL ACTIVITY OF NANOSTRUCTURAL SILVER PARTICLES

Abstract ................................................................................................. 196 17.1 Introduction .................................................................................. 196 17.2 Materials and Methods ................................................................. 200 17.3 Results and Discussion ................................................................ 201 17.4 Conclusion ................................................................................... 206 Keywords .............................................................................................. 207 References ............................................................................................. 207

ABSTRACT

It is shown that injection of silver nanoparticles (NPs) into large-tonnage polymers, such as polystyrene (PS) and styrene copolymer with acrylonitrile (SAN), imparts fungicide properties to them. For the purpose of further forecasting, the process of microscopic fungi and bacteria growth in the presence of different silver NP concentrations has been described quantitatively. It is shown that addition of silver NPs significantly suppresses growth of Aspergillus niger and Penicillium chrysogenum microscopic fungi both at the initial, and stationary stages of their growth. Inhibition of bacterial growth manifests itself in increased induction period (the lag-phase).