4 years ago



110 nanoparticles. They

110 nanoparticles. They might have interesting properties in catalysis and electronics (De Corte et al., 2010). Silver ions can be reduced into biogenic silver particles by sugars on the cell wall of Lactobacilli (Sintubin et al., 2009). This biogenic silver has a strong antimicrobial activity towards bacteria and viruses. Different filter systems for drinking water hygienisation with this biogenic silver have been operated successfully (De Gusseme et al., 2010). Biogenic materials can thus serve as a powerful tool in catalysis, drinking water production and disinfection. Attachment to the bacterial cell wall prevents them from being released and taken up by humans, making them attractive as an environmental friendly and safe alternative for conventionally synthesized nanoparticles. References _______________________________________________ De Corte S., Hennebel T., Verschuere S., Cuvelier C., Boon N., Verstraete W. 2010. Gold nanoparticle formation using Shewanella oneidensis: a fast biosorption and slow reduction process. Submitted. De Gusseme B., Sintubin L., Baert L., Thibo E., Hennebel T., Vermeulen G., Uyttendaele M., Verstraete W., Boon N. 2010. Biogenic silver nanoparticles for disinfection of water contaminated with viruses. Applied and Environmental Microbiology 76, 1082-1087. De Windt W., Aelterman P., Verstraete W. 2005. Bioreductive deposition of palladium(0) nanoparticles on Shewanella oneidensis with catalytic activity towards reductive dechlorination of polychlorinated biphenyls. Environmental Microbiology 7, 314-325. Hennebel T., De Corte S., Vanhaecke L., Vanherck K., Forrez I., De Gussseme B., Verhagen P., Verbeken K., Van der Bruggen B., Vankelecom I., Boon N., Verstraete W. 2010. Removal of diatrizoate with catalytically active membranes incorporating microbially produced palladium nanoparticles. Water Research 44, 1498-1506. Hennebel T., De Gusseme B., Boon N., Verstraete W. 2009a. Biogenic metals in advanced water treatment. Trends in Biotechnology 27, 90-98. Hennebel T., Simoen H., De Windt W., Verloo M., Boon N., Verstraete W. 2009b. Biocatalytic dechlorination of trichloroethylene by bio-precipitated and encapsulated palladium nanoparticles in a fixed bed reactor. Biotechnology and Bioengineering 102, 995-1002. Hennebel T., Verhagen P., De Gusseme B., Simoen H., Vlaeminck S.E., Boon N., Verstraete W. 2009c. Removal of trichloroethylene with bio-Pd in a pilot-scale membrane reactor. Chemosphere 76, 1221-1225.

Sintubin L., De Windt W., Dick J., Mast J., Van der Ha D., Verstraete W., Boon N. 2009. Lactic acid bacteria as reducing and capping agent for the fast and efficient production of silver nanoparticles. Applied Microbiology and Biotechnology 84, 741-749. 111

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