Amir Harouni, Soleiman Abbasi
Soleiman Abbasi, Designing a microwave-assisted low pressure cold plasma (LPCP) generator: A case study on Salmonella decontamination(2017)SDRP Journal of Food Science & Technology 2(2)
The main objective of the present study was to develop a microwave-assisted low pressure cold plasma (LPCP) generator to be used for decontamination purposes. After the successful designing of the generator and production of cold plasma, optimum operating conditions were experimentally determined. Then, its efficacy on decontamination of egg shell and aluminum foil (inoculated by Salmonella enterica subspp. enterica PTCC: 1709) under various LPCP exposure and storage times was investigated. LPCP exposure for 5 min diminished the bacterial counts by 1.92 and 3.2 logs on the egg shell and aluminum foil, respectively. Moreover, the LPCP exposure up to 10 min showed no significant effect (p>0.05) on various qualitative characteristics, while prolonged LPCP treatment accelerated pH increment in albumen. The achievements of the present study represented the potential of LPCP generator for the partial decontamination of various food and packaging items as an appropriate alternative to the thermal or chemical methods.
Keywords: Cold Plasma, Microwave, Salmonella, Minimal Processing.
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