Abstract
Abstract: A silver nanoparticle solution prepared at the Center for Incubation and Technology Transfers was used in the current study. The nanoparticles have an average size of 15.0 nm. The silver nanoparticle solution exhibits an antibacterial activity to Aeromonas hydrophyla and Aeromonas caviae isolated from fresh water fish ponds and Vibrio harveyi and Vibrio alginoliticus isolated from white shrimp ponds. The silver nanoparticle solution at a concentration of 25 ppm inhibits A. caviae and A. hydrophila, and the peak attenuation time was 24 hours after exposure to the bacteria. The solution at a concentration of 12.5 ppm also inhibits Vibrio harveyi and Vibrio alginoliticus, and the peak attenuation time was 48 hours after exposure to the bacteria.Keywords: antibacterial activity, silver nanoparticles, Aeromonas spp. and Vibrio spp.
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