Evaluation of pathogen inactivation on sliced cheese induced by encapsulated atmospheric pressure dielectric barrier discharge plasma
| Autor: | Hyun-Joo Kim, Hae In Yong, Wonho Choe, Cheorun Jo, Amali U. Alahakoon, Ki Jung Kim, Sanghoo Park |
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| Rok vydání: | 2015 |
| Předmět: |
Salmonella typhimurium
Salmonella Microbial Viability Atmospheric pressure Chemistry Food Contamination Atmospheric-pressure plasma Dielectric barrier discharge Sterilization (microbiology) Escherichia coli O157 medicine.disease_cause Listeria monocytogenes Microbiology Agar plate Cheese Food Irradiation medicine Food irradiation Food science Food Science |
| Zdroj: | Food Microbiology. 46:46-50 |
| ISSN: | 0740-0020 |
| DOI: | 10.1016/j.fm.2014.07.010 |
| Popis: | Pathogen inactivation induced by atmospheric pressure dielectric barrier discharge (DBD) (250 W, 15 kHz, air discharge) produced in a rectangular plastic container and the effect of post-treatment storage time on inactivation were evaluated using agar plates and cheese slices. When agar plates were treated with plasma, populations of Escherichia coli, Salmonella Typhimurium, and Listeria monocytogenes showed 3.57, 6.69, and 6.53 decimal reductions at 60 s, 45 s, and 7 min, respectively. When the pathogens tested were inoculated on cheese slices, 2.67, 3.10, and 1.65 decimal reductions were achieved at the same respective treatment times. The post-treatment storage duration following plasma treatment potently affected further reduction in pathogen populations. Therefore, the newly developed encapsulated DBD-plasma system for use in a container can be applied to improve the safety of sliced cheese, and increasing post-treatment storage time can greatly enhance the system's pathogen-inactivation efficiency. |
| Databáze: | OpenAIRE |
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