Evaluation of selected microbial and physicochemical parameters of fresh tomato juice after cold atmospheric pressure plasma treatment during refrigerated storage

Starek, A.; Pawłat, Joanna; Chudzik, Barbara; Kwiatkowski, Michał; Terebun, Piotr; Sagan, Agnieszka; Andrejko, D.

doi:10.1038/s41598-019-44946-1

Cited by 52 publications

(48 citation statements)

References 46 publications

(51 reference statements)

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“…The low efficiency, the requirement of pure gases, and the limited volume of liquid that can be treated make plasma-treated water (PTW) expensive and its use in medicine and agriculture impossible. The most promising method for effective and low-cost production of PTW is treating liquids with high-density plasma generated by using air as a process gas [3,18,[23][24][25][26]. Furthermore, it may be possible to scale up production and reduce the cost of PTW by applying plasmas generated in ambient air to treat a continuous flow of liquid.…”

Section: Introductionmentioning

confidence: 99%

Direct Treatment of Liquids Using Low-Current Arc in Ambient Air for Biomedical Applications

et al. 2019

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In this work, we developed a portable device with low production and operation costs for generating an ambient air low-current arc (AALCA) that is transferred to the surface of a treated liquid. It was possible to generate a stable discharge, irrespective of the conductivity of the treated liquid, as a sequence of corona, repeating spark, and low-current arc discharges. The estimated concentration of reactive oxygen and nitrogen species (RONS) in plasma-treated water (PTW) produced using AALCA treatment was two orders of magnitude higher than that of PTW produced using conventional He nonequilibrium atmospheric pressure plasma jets or dielectric barrier discharges. The strong bactericidal effect of the treatment using AALCA and the water treated using AALCA was confirmed by survival tests of Escherichia coli. Further, the possibility of treating a continuous flow of liquid using AALCA was demonstrated.

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Section: Introductionmentioning

confidence: 99%

Direct Treatment of Liquids Using Low-Current Arc in Ambient Air for Biomedical Applications

et al. 2019

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“…In order to establish the experimental conditions, preliminary studies were carried out to assess the efficacy of cold plasma inactivation of L. hilgardii cells using various critical plasma parameters such as the type of plasma generator (with different configurations and power supplies) and the type of gas used. For the verification tests, two electrode gliding arc (GAD) reactor 27 , 28 , radio-frequency (RF) plasma jet 29 , 30 , dielectric barrier discharge (DBD) plasma jet with two ring electrodes on the ceramic tube 31 , 32 and DBD plasma jet with one ring electrode on the ceramic tube and grounded electrode below the container were used. After the exposure for 2.5 min, the most effective gas mixture was selected and the operating time was extended to 5 min only for this single gas mixture and the selected reactor.…”

Section: Methodsmentioning

confidence: 99%

Morphological and physiological changes in Lentilactobacillus hilgardii cells after cold plasma treatment

Niedźwiedź

Juzwa

Skrzypiec

et al. 2020

Sci Rep

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Atmospheric cold plasma (ACP) inactivation of Lentilactobacillus hilgardii was investigated. Bacteria were exposed to ACP dielectric barrier discharge with helium and oxygen as working gases for 5, 10, and 15 min. The innovative approach in our work for evaluation of bacterial survival was the use in addition to the classical plate culture method also flow cytometry which allowed the cells to be sorted and revealed different physiological states after the plasma treatment. Results showed total inhibition of bacterial growth after 10-min of ACP exposure. However, the analysis of flow cytometry demonstrated the presence of 14.4% of active cells 77.5% of cells in the mid-active state and 8.1% of dead cells after 10 min. In addition, some of the cells in the mid-active state showed the ability to grow again on culture medium, thus confirming the hypothesis of induction of VBNC state in L .hilgardii cells by cold plasma. In turn, atomic force microscopy (AFM) which was used to study morphological changes in L. hilgardii after plasma treatment at particular physiological states (active, mid-active, dead), showed that the surface roughness of the mid-active cell (2.70 ± 0.75 nm) was similar to that of the control sample (2.04 ± 0.55 nm). The lack of considerable changes on the cell surface additionally explains the effective cell resuscitation. To the best of our knowledge, AFM was used for the first time in this work to analyze cells which have been sorted into subpopulations after cold plasma treatment and this is the first work indicating the induction of VBNC state in L. hilgardii cells after exposure to cold plasma.

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“…It is well known that, due to their unique properties, the CAPP-based technologies are widely applied in the industrial and in the know-how sectors. The properties of CAPP-based technologies are associated with the fact that CAPPs are plenteous sources of reactive oxygen species (ROS) and reactive nitrogen species (RNS) [57]. Due to the possibility of controlling the concentration of these ROS and RNS, as well as CAPP operating parameters by constructing and tailoring dedicated for that purpose reaction-discharges systems, it is possible to control the CAPP-liquid interactions of the generated CAPP.…”

Section: Cold Atmospheric Pressure Plasmas Ex Situ Approachmentioning

confidence: 99%

A Mini-Review on Anion Exchange and Chelating Polymers for Applications in Hydrometallurgy, Environmental Protection, and Biomedicine

Cyganowski

Dzimitrowicz

2020

Polymers

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The rapidly increasing demand for technologies aiming to resolve challenges of separations and environmental protection causes a sharp increase in the demand for ion exchange (IX) and chelating polymers. These unique materials can offer target-selective adsorption properties vital for the removal or recovery of harmful and precious materials, where trace concentrations thereof make other techniques insufficient. Hence, recent achievements in syntheses of IX and chelating resins designed and developed in our research group are discussed within this mini-review. The aim of the present work is to reveal that, due to the diversified and unique physiochemical characteristics of the proposed materials, they are not limited to traditional separation techniques and could be used in multifunctional areas of applications, including catalysis, heat management, and biomedicine.

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Evaluation of selected microbial and physicochemical parameters of fresh tomato juice after cold atmospheric pressure plasma treatment during refrigerated storage

Cited by 52 publications

References 46 publications

Direct Treatment of Liquids Using Low-Current Arc in Ambient Air for Biomedical Applications

Direct Treatment of Liquids Using Low-Current Arc in Ambient Air for Biomedical Applications

Morphological and physiological changes in Lentilactobacillus hilgardii cells after cold plasma treatment

A Mini-Review on Anion Exchange and Chelating Polymers for Applications in Hydrometallurgy, Environmental Protection, and Biomedicine

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