Utilization of Extremely Low Frequency (ELF) Magnetic Field is as Alternative Sterilization of Salmonella typhimurium In Gado-Gado

Abstract

Extremely Low Frequency Magnetic Field (ELF-MF) is non-ionizing and non-termal radiation. The previous research result was proven that prevalence death of Salmonella typhimurium in the fisiology liquid that has positive correlation with exposure intensity, but without exposure duration. The exposure of ELF 646.7 µT magnetic field during 30 minutes gives higher Salmonella death impact rather than 60 minutes and 90 minutes exposure. The objective of this research was to determine dose effectiveness of ELF magnetic field exposure in Gado-Gado fresh food as sterilization alternative method from Salmonella typhimurium. The sample in this research was Gado-Gado (containing of seasoning and vegetables) which was gotten from the street vendors around Jember University campus. The dose of ELF magnetic field exposure that be tested was on 646.7µT with exposure during 30 minutes. The dose effectiveness of Extremely Low Frequency (ELF) magnetic field with 646.7µT intensity during 30 minutes was proven can decrease Salmonella typhimurium population in Gado-Gado by inhibition effectiveness was shown by the destruction percentage in Gado-Gado seasoning was 56% and in Gado-Gado vegetables was 17 %. According to the result of this research, it could be concluded that ELF magnetic field radiation has potency as the sterilization alternative method of fresh food which was cheap and safe from Salmonella typhimurium.