Effect of Dielectric Barrier Discharge Plasma against Listeria monocytogenes Mixed-Culture Biofilms on Food-Contact Surfaces

is a major foodborne pathogen. Various methods can be used to control biofilms formed by foodborne pathogens. Recently, the food industry has become interested in plasma, which can be used as a non-thermal technology with minimum changes to product quality. In this study, the effects of dielectric b...

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Published inAntibiotics (Basel) Vol. 12; no. 3; p. 609
Main Authors Song, Min Gyu, Roy, Pantu Kumar, Jeon, Eun Bi, Kim, So Hee, Heu, Min Soo, Lee, Jung-Suck, Choi, Jae-Suk, Kim, Jin-Soo, Park, Shin Young
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 19.03.2023
MDPI
Subjects
Bacteria
biofilm
Biofilms
Biological membranes
Cell culture
DBD plasma
Dielectric barrier discharge
Field emission microscopy
Food contamination & poisoning
Food industry
food-contact surfaces
Foodborne pathogens
inactivation
Latex
Listeria
Listeria monocytogenes
Microorganisms
non-thermal-plasma
Pathogens
Plasma
Scanning electron microscopy
Seafood
Silicone rubber
Silicones
Stainless steel
Stainless steels
Sterilization
Technology
DBD plasma
Listeria monocytogenes
food-contact surfaces
non-thermal-plasma
biofilm
inactivation
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Summary:is a major foodborne pathogen. Various methods can be used to control biofilms formed by foodborne pathogens. Recently, the food industry has become interested in plasma, which can be used as a non-thermal technology with minimum changes to product quality. In this study, the effects of dielectric barrier discharge (DBD) plasma on mixed-culture biofilms formed on stainless steel (SS), latex hand glove (HG), and silicone rubber (SR) were investigated. DBD plasma effectuated reductions of 0.11-1.14, 0.28-1.27 and 0.37-1.55 log CFU/cm , respectively. Field emission scanning electron microscopy (FE-SEM) demonstrated that DBD plasma cuts off intercellular contact and induces cell decomposition to prevent the development of biological membranes. It was confirmed that the formed biofilms collapsed and separated into individual bacteria. Our findings suggest that DBD plasma can be used as an alternative non-heating sterilization technology in the food industry to reduce biofilm formation on bacterial targets.
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ISSN:2079-6382
2079-6382
DOI:10.3390/antibiotics12030609