In this work, the bactericidal effect of a silver nanoparticles doped polymer on the Lactobacillus Casei Shirota bacteria is studied experimentally. The doped polymer is synthesized from the AgCN complex, its bactericidal effect is evaluated by Uv/vis spectroscopy. We find that the doped polymer has a greater bactericidal effect than the undipped one. Also it is found that the bactericidal efficiency depends largely on the concentration of the doped polymer in the system. Besides, the stability of the doped polymer in saliva and urine media was phenomenologically studied. The effect of these media on the polymer was determined by Scanning and Transmission Electron Microscopy. It is concluded that the polymer is completely stable in saliva but not in urine media, because it was totally dissolved in urine.
En el presente trabajo se realiza un estudio experimental del efecto bactericida sobre la bacteria Lactobacilos Casei Shirota, de un polímero dopado de nanopartículas de plata, sintetizado a partir del complejo AgCN. El efecto bactericida del polímero se evalúa mediante espectroscopia Uv/vis, encontrándose que el polímero dopado tiene un mayor efecto bactericida respecto a aquel sin dopar. Además se encontró que la eficiencia bactericida depende en gran medida de la concentración de polímero dopado en el sistema. Además se estudia fenomenológicamente, mediante Microscopia Electrónica de Barrido y Transmisión, la estabilidad del polímero dopado en saliva y orina, concluyéndose que el polímero es completamente estable en saliva, no así en la orina donde éste se disolvió por completo.
