Cold plasma-activated hydrogen peroxide aerosol inactivates Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria innocua and maintains quality of grape tomato, spinach and cantaloupe

Jiang, Yunbin; Sokorai, Kimberly; Pyrgiotakis, Georgios; Demokritou, Philip; Li, Xihong; Mukhopadhyay, Sudarsan; Jin, Tony; Fan, Xuetong

doi:10.1016/j.ijfoodmicro.2017.03.004

Cited by 89 publications

(44 citation statements)

References 59 publications

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“…But in the current study, no such significant ( p > .05) reduction in the pH or increment in the TSS was observed as the plasma species do not induce apparent changes in the commodity. Similar results were observed by (Jiang, Sokorai, Pyrgiotakis, Demokritou, & Li, ). However, in case of tomato juice, the pH was reduced notably when treated with plasma due to the reaction of plasma species throughout the product as it was in a homogenized form (Dasan & Boyaci, ).…”

Section: Resultssupporting

confidence: 91%

Influence of low‐pressure nonthermal dielectric barrier discharge plasma on chlorpyrifos reduction in tomatoes

Gracy

Gupta

Radhakrishnan

2019

J Food Process Engineering

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This study aimed to investigate the influence of nonthermal dielectric barrier discharge (DBD) plasma on chlorpyrifos reduction in tomatoes. As plasma contains highly reactive species and free radicals, it is expected to cause oxidative degradation of the target pesticide chlorpyrifos into its metabolites, thereby reducing the pesticide concentration. Tomatoes applied with three initial pesticide concentrations ranging from 0.6 to 0.8 ppm were subjected to DBD plasma of 2–5 W for the exposure of 4–6 min. The plasma‐treated and control samples were examined for the concentration of pesticide and the physicochemical attributes. The maximum reduction of 89.18% in the pesticide concentration was observed with 5 W at 6 min, which might be due to the intensified reactions of oxidative plasma species. This was further confirmed by GC–MS analysis, and the predominant metabolite of chlorpyrifos degradation, 3,5,6‐trichloro pyridinol (TCP) was identified in the treated sample. The physicochemical attributes except TSS and pH were also significantly (p < .05) influenced by the plasma treatments. Tomato color index (TI) was enhanced while firmness, bio yield point, carotenoids, and total phenolic contents were decreased considerably after plasma treatment. Thus, the cold plasma would be a promising nonthermal technique to degrade and reduce the organophosphate pesticide chlorpyrifos in tomatoes. Practical applications The present study investigates the potential of cold plasma technique to reduce the pesticide contaminant in the perishable commodity, which would result in a safer as well as intact freshness product. The discovered process conditions, that is, the plasma power of 5 W and the treatment time of 6 min giving maximum pesticide reduction would be efficient as well as economical to consider this method of decontamination as a feasible pretreatment. This would further facilitate its application in processing and distribution lines even on a large scale level to promise the consumers a benign product.

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Section: Resultssupporting

confidence: 91%

Influence of low‐pressure nonthermal dielectric barrier discharge plasma on chlorpyrifos reduction in tomatoes

Gracy

Gupta

Radhakrishnan

2019

J Food Process Engineering

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“…Treatment with 3% H 2 O 2 and a combination of H 2 O 2 and UV resulted in 0.77 and 0.87 log cfu/g reductions of E. coli O157:H7 inoculated on mushrooms (Guan et al, 2013). Jiang et al (2017) demonstrated that efficacy of aerosolized hydrogen peroxide depended on type of inoculated bacteria, location of bacteria, and type of produce items, and aerosolized hydrogen peroxide could potentially be used to sanitize fresh fruits and vegetables. and leakage of intracellular material, were observed under treatment with 0.06, 0.08, and 0.10% H 2 O 2 .…”

Section: Resultsmentioning

confidence: 94%

“…Hydrogen peroxide is a well-studied sanitizer for inactivate food-borne pathogens (Guan et al, 2013;Back et al, 2014) with bacteriostatic and bactericidal activity (Olmez and Kretzschmar, 2009). In addition, hydrogen peroxide is regarded as a safe disinfecting agent due to no harmful residue after treatment, and inactivation of H 2 O 2 solutions on Escherichia coli O157, Listeria monocytogenes, and Salmonella have been studied (Sapers et al, 2000;Huang and Chen, 2011;Choi et al, 2012;Guan et al, 2013;Back et al, 2014;Jiang et al, 2017). However, little work has focused on the effects of hydrogen peroxide on inactivation C. malonaticus cells and inhibition of biofilm formation.…”

Section: Introductionmentioning

confidence: 99%

Inactivation of Cronobacter malonaticus cells and inhibition of its biofilm formation exposed to hydrogen peroxide stress

Zhang

Jiao

et al. 2018

Journal of Dairy Science

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Presence of Cronobacter malonaticus in powdered infant formula (PIF) poses a high risk to infant and public health. Cronobacter malonaticus has been widely distributed in food and food processing environments, and the true origin of C. malonaticus in PIF is poorly understood. Control and prevention of C. malonaticus is necessary for achieving microbial safety of PIF. However, little information about decontamination of C. malonaticus is available. In this study, effects of hydrogen peroxide on inactivation and morphological changes of C. malonaticus cells were determined. Furthermore, inhibitory effects of HO on biofilm formation in C. malonaticus were also performed. Results indicated that HO could completely inactivate C. malonaticus in sterile water with 0.06% HO for 25 min, 0.08% HO for 15 min, and 0.10% for 10 min, respectively, whereas the survival rates of C. malonaticus in tryptic soy broth medium significantly increased with the same treatment time and concentration of HO. In addition, morphological changes of C. malonaticus cells, including cell shrinkage, disruption of cells, cell intercession, and leakage of intercellular material in sterile water after HO treatment, were more predominant than those in tryptic soy broth. Finally, significant reduction in biofilm formation by HO was found using crystal violet staining, scanning electron microscopy, and confocal laser scanning microscopy detection compared with control samples. This is the first report to determine the effects of HO on C. malonaticus cells and biofilm formation. The findings provided valuable information for practical application of HO for decontamination of C. malonaticus in dairy processing.

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“…These studies also demonstrated that plant quality characteristics, such as pigmentation and leaf properties, are not significantly affected by the plasma treatment. Furthermore, the plasma treatment showed the efficient disinfection of harvested fruits, such as grape, banana, blueberry, tomato, strawberry, pepper, cantaloupe, and citrus, contaminated with Bacillus, E. coli, Listeria, Salmonella, and Staphylococcus (Liu et al, 2011;Niemira, 2012;Misra et al, 2014;Ziuzina et al, 2014;Hertwig et al, 2015;Jiang et al, 2017;Mošovská et al, 2018;Puligundla et al, 2018b). These studies showed that the efficiency of disinfection by plasma is different among species.…”

Section: Post-harvest Diseasesmentioning

confidence: 94%

Plant Disease Control by Non-Thermal Atmospheric-Pressure Plasma

et al. 2020

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Disease stresses caused by pathogenic microorganisms are increasing, probably because of global warming. Conventional technologies for plant disease control have often revealed their limitations in efficiency, environmental safety, and economic costs. There is high demand for improvements in efficiency and safety. Non-thermal atmospheric-pressure plasma has demonstrated its potential as an alternative tool for efficient and environmentally safe control of plant pathogenic microorganisms in many studies, which are overviewed in this review. Efficient inactivation of phytopathogenic bacterial and fungal cells by various plasma sources under laboratory conditions has been frequently reported. In addition, plasma-treated water shows antimicrobial activity. Plasma and plasma-treated water exhibit a broad spectrum of efficiency in the decontamination and disinfection of plants, fruits, and seeds, indicating that the outcomes of plasma treatment can be significantly influenced by the microenvironments between plasma and plant tissues, such as the surface structures and properties, antioxidant systems, and surface chemistry of plants. More intense studies are required on the efficiency of decontamination and disinfection and underlying mechanisms. Recently, the induction of plant tolerance or resistance to pathogens by plasma (so-called "plasma vaccination") is emerging as a new area of study, with active research ongoing in this field.

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Cold plasma-activated hydrogen peroxide aerosol inactivates Escherichia coli O157:H7, Salmonella Typhimurium, and Listeria innocua and maintains quality of grape tomato, spinach and cantaloupe

Cited by 89 publications

References 59 publications

Influence of low‐pressure nonthermal dielectric barrier discharge plasma on chlorpyrifos reduction in tomatoes

Influence of low‐pressure nonthermal dielectric barrier discharge plasma on chlorpyrifos reduction in tomatoes

Inactivation of Cronobacter malonaticus cells and inhibition of its biofilm formation exposed to hydrogen peroxide stress

Plant Disease Control by Non-Thermal Atmospheric-Pressure Plasma

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