Afterglow corona discharge air plasma (ACDAP) for inactivation of common food-borne pathogens

Mok, Chulkyoon; Lee, Taehoon; Puligundla, Pradeep

doi:10.1016/j.foodres.2014.11.034

Cited by 19 publications

(8 citation statements)

References 38 publications

(35 reference statements)

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“…Plasmas are also active against microorganisms that are sometimes pathogenic or putrefy food as has been shown in fish, meat, poultry, cheese, fruits, vegetables, seeds, eggs, dried nuts, dried milk, and spores in spices . Also, an inactivation of Escherichia coli , Salmonella spp ., Vibrio parahaemolyticus , Listeria monocytogenes , Staphylococcus aureus , Bacillus cereus , and foodborne viruses in different foods could be demonstrated . For food decontamination, the guidelines of the US Food and Drug Administration require a 5 log bacterial reduction.…”

Section: Decontamination Of Surfaces and Liquidsmentioning

confidence: 99%

Cold Physical Plasmas in the Field of Hygiene—Relevance, Significance, and Future Applications

Krämer

Bekeschus

Matthes

et al. 2015

Plasma Processes & Polymers

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Cold physical plasmas ignited a technological spark in industry, biotechnology, and medicine. Especially the field of hygiene benefited of the plasma's exceptional activity against pathogenic microorganisms. Together with plasma-based surface functionalization, these qualities are highly relevant in a variety of processes in health care, such as the decontamination or sterilization of medical devices, food, packaging materials, waste water, or indoor air. In medicine, plasma has proven to show promising antiseptic results on skin and mucosal membranes in infection-related diseases in dermatology and dentistry. This comprehensive review will discuss the current applications of cold plasma in the fields of hygiene, and will provide a promising outlook on many applications yet to come.

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Section: Decontamination Of Surfaces and Liquidsmentioning

confidence: 99%

Cold Physical Plasmas in the Field of Hygiene—Relevance, Significance, and Future Applications

Krämer

Bekeschus

Matthes

et al. 2015

Plasma Processes & Polymers

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“…ere are many reports that state that lowtemperature atmospheric plasma can kill various kinds of microorganisms, such as fungi, bacteria, and yeast [10,11].…”

Section: Introductionmentioning

confidence: 99%

Microbial Decontamination of Onion by Corona Discharge Air Plasma during Cold Storage

Chang

Bae²,

Shin

et al. 2018

Journal of Food Quality

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Corona discharge air plasma (CDAP) is a nonthermal decontamination technology which is generating antimicrobial agents such as photons, electrons, positively and negatively charged ions, atoms, and free radicals. We investigated the effect of a corona discharge under atmospheric pressure on the sterilization of postharvest fungal pathogens on onion. The main antimicrobial reactive substance generated by CDAP was O3. The active species such as nitric oxide (NO) and nitric dioxide (NO2) were nearly detected in this experiment. CDAP treatment revealed different isolation frequencies depending on postharvest pathogens from diseased onions, showing less isolation frequency of Fusarium spp. and Alternaria sp. than that of Botrytis spp. when compared with untreatment onions during 10-month cold storage. CDAP treatment at 2∼2.6 ppm of O3 slightly stimulated the mycelial growth of Alternaria sp., while the treatment at 20∼24 ppm of O3 gradually inhibited mycelial growth by treatment time. However, Botrytis sp. showed different patterns of mycelial growth with CDAP treatment. Less than 4 hours’ treatment of CDAP slightly inhibited the mycelial growth of Botrytis sp., while 8 hours’ treatment of CDAP slightly stimulated the mycelial growth of Botrytis sp. not depending on the concentration of O3. The inhibitory effect of CDAP on the conidial germination of Alternaria sp. and Botrytis sp. was examined with treatment time and intensity of CDAP. The conidial germination of Alternaria sp. treated with CDAP at the concentration of 13.7∼14.4 ppm of O3 was strongly inhibited by time, showing y = 2.66x2 − 85.139x + 4.88 and R2 = 0.98. When the conidia of Alternaria sp. were exposed for 2 hours with varying plasma O3 concentration, the conidial germination was strongly inhibited as the concentration of O3 increases, showing y = −0.09x2 + 6.905x − 0.764 and R2 = 0.95. The conidia of Botrytis sp. also showed similar patterns to CDAP. The inhibitory effect of CDAP on the germination of postharvest pathogens depends on treatment time and O3 concentration.

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“…Comparable reduction factors for B. atrophaeus spores were obtained in the present study within treatment times of 60–90 min, but in a considerably larger volume of approximately 10 m 3 . Mok et al (2015) introduced the afterglow from a corona discharge in a treatment chamber where a reduction of Escherichia coli O157:H7 by 3.5 orders of magnitude was demonstrated within 24 h. In a more recent study, Ki et al (2019) investigated the disinfection capacity of a DBD plasma inside a laboratory chamber (0.175 m 3 ) or a van (2.43 m 3 ). A reduction of S. aureus by approximately two orders of magnitude within 30 min was reported inside the van.…”

Section: Discussionmentioning

confidence: 99%

Disinfection of an ambulance using a compact atmospheric plasma device

Krämer

Warschat

Muranyi

2022

Journal of Applied Microbiology

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Aims:The worldwide spread of the coronavirus SARS-CoV-2 has highlighted the need for fast and simple disinfection processes, amongst others for ambulance cars on site. To overcome current drawbacks regarding room disinfection, the use of cold atmospheric plasma in remote operation represents a promising alternative for the disinfection of larger volumes. In this study, a compact plasma system was evaluated regarding its disinfection efficiency inside an ambulance car. Methods and Results:The developed plasma device is based on a dielectric barrier discharge (DBD) and operates with ambient air as process gas. The humidified afterglow from the plasma nozzle was introduced into an ambulance car with a volume of approximately 10 m 3 while Bacillus atrophaeus endospores, Staphylococcus aureus or Phi 6 bacteriophages dried on different surfaces (PET-films, glass slides or aluminum foil) were exposed to the reactive gas inside the ambulance vehicle at eight different positions. Reductions of spores by more than 4 orders of magnitude were found on all surfaces and positions within 2 h. Due to their higher susceptibility, Phi 6 bacteriophages and S. aureus counts were reduced by at least 4 orders of magnitude within 30 min on all surfaces. Conclusion:The results show that different microorganisms dried on variable surfaces can be inactivated by several orders of magnitude inside an ambulance by plasma gas from of a compact DBD plasma nozzle. Significance and Impact of the Study: Plasma gas generated on site by a DBD plasma nozzle proved to be highly efficient for the disinfection of the interior of an ambulance car. Compact plasma systems could be a viable alternative for the disinfection of vehicles or rooms.

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Afterglow corona discharge air plasma (ACDAP) for inactivation of common food-borne pathogens

Cited by 19 publications

References 38 publications

Cold Physical Plasmas in the Field of Hygiene—Relevance, Significance, and Future Applications

Cold Physical Plasmas in the Field of Hygiene—Relevance, Significance, and Future Applications

Microbial Decontamination of Onion by Corona Discharge Air Plasma during Cold Storage

Disinfection of an ambulance using a compact atmospheric plasma device

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