Abstract :
In the present study, cost-effective use of non-toxic materials and environmental fabrication of silver nanoparticles by using an extract of waste corn cob.The experiments were to study the temperature, time, and extract/volume ratio of AgNO3 suitable for synthesis. The synthesized silver nanoparticles were examined to confirm the formation of silver nanoparticles by measuring the absorbance with a UV-Vis spectrophotometer at a wavelength of 300 – 750 nm. It was found that the temperature at 90 °C, 45 min, and the extract/volume ratio of AgNO3 at 1:10 were the suitable conditions for the synthesis. The maximum absorbance is at a wavelength of 415 nm, which is the spectral range of silver nanoparticles. For a study on the ability to inhibit Vibrio parahaemolyticus bacteria pathogenic in shrimp. The agar well diffusion method was tested for efficacy in inhibiting bacteria. It was found that V. parahaemolyticus ATCC and V. parahaemolyticus PSU513 had inhibition zone values of 10.19 and 9.28 mm, respectively.
Keywords : corncob extract, silver nanoparticles, Vibrio parahaemolyticus, antibacterial activity.