Atmospheric Cold Plasma Nano Titanium in Cathode and Microbial Load of Escherichia Coli (E. Coli) in Ground Meat: Examinaation and Analysis

Resumen

Application of cold plasma as a non-thermal treatment in food processing industry to reduce
microbial load and cold sterilization has been extensively studied by researchers in the last
decade. Accordingly, the purpose of this study was to investigate effect of atmospheric cold
plasma flow generated by two electrodes with respective diameters of 8 cm (A) and 15 cm (B)
equipped with nano titanium in cathode at three varying intervals on the reduction of the
exponential phase of E. coli in ground meat. After the preparation of young culture and
inoculation on ground meat, E. coli bacteria were counted, before and after treatment. The
reduction of E. coli bacteria in the electrode with large and small diameters were 80% and 50%
respectively, and with increasing time of 4, 6, and 10 minutes, the exponential phase was
reduced by 0.8, 1, and 1.2, respectively. As such, the results implied that the reduction of the
exponential phase of E. Coli was greater for the electrode with a larger diameter compared to
the smaller one, while increasing the duration of treatment reduced the exponential phase to
greater effect.