Bacteria–potential producers of nanoparticles

Nowadays the interest paid to synthesis of nanoparticles of metals, in particular of silver, constantly grows. This attention is stipulated mainly by the fact that today antibacterial silver-containing coating is the most commercialized product abroad.1–3 Among many approaches of nanoparticles’ production, there may be highlighted chemical and biological methods. Chemical methods are wider spread but, biological methods are more perspective since they are more environment friendly and do not demand on use of toxic reagents. Moreover, biological processes are conducted at aerobic conditions, whereas chemical methods quite often demand on anaerobic conditions, which considerably increase cost of nanoparticles’ production. Microbiological formation of nanoparticles is one of essay, cheap and environment safe methods, allowing to obtain stable non-aggregating nanoparticles. Nevertheless, it has its own disadvantages: slow velocity and low mono dispersion of particles.4–6