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Liang J, Wang S, Luo X, Zhang Y, Chen F, Mi Z, Zhang L, Wang G, Zhang W, Liu Z, Ma X, Ye Z, Zhu Z, Yin W, Jia S. Non-contact bacterial identification and decontamination based on laser-induced breakdown spectroscopy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2023; 244:112719. [PMID: 37201319 DOI: 10.1016/j.jphotobiol.2023.112719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/21/2023] [Accepted: 05/03/2023] [Indexed: 05/20/2023]
Abstract
As a new kind of modern military biological weapon, bacterial agents pose a serious threat to the public health security of human beings. Existing bacterial identification requires manual sampling and testing, which is time-consuming, and may also introduce secondary contamination or radioactive hazards during decontamination. In this paper, a non-contact, nondestructive and "green" bacterial identification and decontamination technology based on laser-induced breakdown spectroscopy (LIBS) is proposed. The principal component analysis (PCA) combined with support vector machine (SVM) based on radial basis kernel function is used to establish the classification model of bacteria, and the two-dimensional decontamination test of bacteria is carried out using laser-induced low-temperature plasma combined with a vibration mirror. The experimental results show that the average identification rate of the seven types of bacteria, including Escherichia coli, Bacillus subtilis, Pseudomonas fluorescens, Bacillus megatherium, Pseudomonas aeruginosa, Bacillus thuringiensis and Enterococcus faecalis reaches 98.93%, and the corresponding true positive rate, precision, recall and F1-score reaches 0.9714, 0.9718, 0.9714 and 0.9716, respectively. The optimal decontamination parameters are laser defocusing amount of -50 mm, laser repetition rate of 15-20 kHz, scanning speed of 150 mm/s and number of scans of 10. In this way, the decontamination speed can reach 25.6 mm2/min, and the inactivation rates for both Escherichia coli and Bacillus subtilis are higher than 98%. In addition, it is confirmed that the inactivation rate of plasma is 4 times higher than that of thermal ablation, meaning that the decontamination ability of LIBS mainly relies on the plasma rather than the thermal ablation effect. The new non-contact bacterial identification and decontamination technology does not require sample pretreatment, and can quickly identify bacteria in situ and decontaminate the surfaces of precision instruments, sensitive materials, etc., which has potential application value in modern military, medical and public health fields.
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Affiliation(s)
- Jiahui Liang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, China; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
| | - Shuqing Wang
- SINOPEC Research Institute of Petroleum Processing Co., Ltd., Beijing, China
| | - Xuebin Luo
- Shanxi Xinhua Chemical Defense Equipment Research Institute Co., Ltd., Taiyuan, China
| | - Yan Zhang
- School of Optoelectronic Engineering, Xi'an Technological University, Xian, China
| | - Fei Chen
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, China; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
| | - Ziqi Mi
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, China; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
| | - Lei Zhang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, China; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China.
| | - Gang Wang
- Shanxi Xinhua Chemical Defense Equipment Research Institute Co., Ltd., Taiyuan, China
| | - Wanfei Zhang
- Shanxi Xinhua Chemical Defense Equipment Research Institute Co., Ltd., Taiyuan, China
| | - Zhenrong Liu
- Shanxi Xinhua Chemical Defense Equipment Research Institute Co., Ltd., Taiyuan, China
| | - Xiaofei Ma
- Shanxi Xinhua Chemical Defense Equipment Research Institute Co., Ltd., Taiyuan, China
| | - Zefu Ye
- Shanxi Gemeng US-China Clean Energy R&D Center Co., Ltd., Taiyuan, China
| | - Zhujun Zhu
- Shanxi Gemeng US-China Clean Energy R&D Center Co., Ltd., Taiyuan, China
| | - Wangbao Yin
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, China; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China.
| | - Suotang Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, China; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
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A Systematic Quantitative Determination of the Antimicrobial Efficacy of Grape Seed Extract against Foodborne Bacterial Pathogens. Foods 2023; 12:foods12050929. [PMID: 36900445 PMCID: PMC10001079 DOI: 10.3390/foods12050929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/15/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023] Open
Abstract
Concerns regarding the role of antimicrobial resistance (AMR) in disease outbreaks are growing due to the excessive use of antibiotics. Moreover, consumers are demanding food products that are minimally processed and produced in a sustainable way, without the use of chemical preservatives or antibiotics. Grape seed extract (GSE) is isolated from wine industry waste and is an interesting source of natural antimicrobials, especially when aiming to increase sustainable processing. The aim of this study was to obtain a systematic understanding of the microbial inactivation efficacy/potential of GSE against Listeria monocytogenes (Gram-positive), Escherichia coli and Salmonella Typhimurium (Gram-negative) in an in vitro model system. More specifically, for L. monocytogenes, the effects of the initial inoculum concentration, bacterial growth phase and absence of the environmental stress response regulon (SigB) on the GSE microbial inactivation potential were investigated. In general, GSE was found to be highly effective at inactivating L. monocytogenes, with higher inactivation achieved for higher GSE concentrations and lower initial inoculum levels. Generally, stationary phase cells were more resistant/tolerant to GSE as compared to exponential phase cells (for the same inoculum level). Additionally, SigB appears to play an important role in the resistance of L. monocytogenes to GSE. The Gram-negative bacteria under study (E. coli and S. Typhimurium) were less susceptible to GSE as compared to L. monocytogenes. Our findings provide a quantitative and mechanistic understanding of the impact of GSE on the microbial dynamics of foodborne pathogens, assisting in the more systematic design of natural antimicrobial-based strategies for sustainable food safety.
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Comparison of microbial reduction effect of intense pulsed light according to growth stage and population density of Escherichia coli ATCC 25922 using a double Weibull model. Food Res Int 2023; 164:112353. [PMID: 36737941 DOI: 10.1016/j.foodres.2022.112353] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 12/14/2022] [Accepted: 12/23/2022] [Indexed: 12/26/2022]
Abstract
This study evaluated how the efficacy of intense pulsed light (IPL) was influenced by biological factors such as the incubation time and the population of Escherichia coli. According to the 4D value, the microorganisms in the exponential phase were more susceptible to IPL (0.51 J/cm2), while those in the stationary phase were the most resistant (0.67 J/cm2). The microorganisms in the exponential phase could have more critical DNA damage. In addition, the degree of inactivation was affected by the microbial population. When the population was 109 CFU/ml, a maximum 3.4-log reduction was observed after applying IPL at 12.5 J/cm2. In contrast, a population with a density of 1010 CFU/ml showed maximally 0.13-log reduction when IPL was applied at 18.7 J/cm2. This large difference might have been due to cell distribution and aggregation. The study is expected to contribute to the analytical confirmation of the microbial reduction mechanism through non-thermal technologies.
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A Plasma-Based Decontamination Process Reveals Potential for an in-Process Surface-Sanitation Method. PLASMA 2022. [DOI: 10.3390/plasma5030027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Methods, which use an indirect plasma treatment for the inactivation of microorganisms in foods, claim a vastly growing field of research. This paper presents a method that uses plasma-processed air (PPA) as a sanitizer. In addition to a sanitation concept for the decontamination of produce in the value chain, the presented method offers a possible application as an “in-process” surface sanitation. PPA provides antimicrobial-potent species, which are predominantly reactive nitrogen species (RNS); this has an outstanding groove penetration property. In an experimental approach, surfaces, made from materials, which are frequently used for the construction of food-processing plants, were inoculated with different microorganisms. Listeria monocytogenes (ATCC 15313), Staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 10538), Salmonella enterica subsp. enterica serovar Typhimurium (ATCC 43971), and Salmonella enterica subsp. enterica serovar Enteritidis (ATCC 13076) are all microorganisms that frequently appear in foods and possess the risk for cross-contamination from the plant to the produce or vice versa. The contaminated samples were treated for various treatment times (1–5 min) with PPA of different antimicrobial potencies. Subsequently, the microbial load on the specimens was determined and compared with the load of untreated samples. As a result, reduction factors (RF) up to several log10-steps were obtained. Although surface and the bacterial strain showed an influence on the RF, the major influence was seen by a prolongation of the treatment time and an increase in the potency of the PPA.
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Low Temperature Plasma Strategies for Xylella fastidiosa Inactivation. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The quarantine bacterium Xylella fastidiosa was first detected in Salento (Apulia, Italy) in 2013 and caused severe symptoms in olives, leading to plant death. The disease, named Olive Quick Decline Syndrome (OQDS), is caused by the strain “De Donno” ST53 of the subspecies pauca of this bacterium (XfDD), which is spread by the insect Philaenus spumarius. The epidemic poses a serious threat to the agricultural economy and the landscape, as X. fastidiosa infects several plant species and there is yet no recognized solution. Research on OQDS is focused on finding strategies to control its spread or mitigate its symptoms. As a perspective solution, we investigated the efficacy of the low-temperature plasma and plasma-activated water to kill bacterial cells. Experiments were conducted in vitro to test the biocidal effect of the direct application of a Surface Dielectric Barrier Discharge (SDBD) plasma on bacteria cells and Plasma Activated Water (PAW). PAW activity was tested as a possible biocidal agent that can move freely in the xylem network paving the way to test the strategy on infected plants. The results showed a high decontamination rate even for cells of XfDD embedded in biofilms grown on solid media and complete inactivation in liquid culture medium.
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Non-Thermal Atmospheric Plasma for Microbial Decontamination and Removal of Hazardous Chemicals: An Overview in the Circular Economy Context with Data for Test Applications of Microwave Plasma Torch. Processes (Basel) 2022. [DOI: 10.3390/pr10030554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The transformation of our linear “take-make-waste” system to a cyclic flow of materials and energy is a priority task for society, but the circular use of waste streams from one industry/sector as a material input for another must be completely safe. The need for new advanced technologies and methods ensuring both microbiological safety and the removal of potential chemical residues in used materials and products is urgent. Non-thermal atmospheric plasma (cold atmospheric plasma—CAP) has recently attracted great research interest as an alternative for operative solutions of problems related to safety and quality control. CAP is a powerful tool for the inactivation of different hazardous microorganisms and viruses, and the effective decontamination of surfaces and liquids has been demonstrated. Additionally, the plasma’s active components are strong oxidizers and their synergetic effect can lead to the degradation of toxic chemical compounds such as phenols and azo-dyes.
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Katsigiannis AS, Bayliss DL, Walsh JL. Cold plasma for the disinfection of industrial food‐contact surfaces: An overview of current status and opportunities. Compr Rev Food Sci Food Saf 2022; 21:1086-1124. [DOI: 10.1111/1541-4337.12885] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/26/2021] [Accepted: 11/16/2021] [Indexed: 12/14/2022]
Affiliation(s)
| | - Danny L. Bayliss
- Processing & Production Research Department Campden BRI Gloucestershire UK
| | - James L. Walsh
- Department of Electrical Engineering & Electronics University of Liverpool Liverpool UK
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Balasubramaniyan K, Bhoobalan K, Jayaraman D, Sounderraj S, Muthuukumar KR, Santhini E. Development and assessment of biologically compatible anterior cruciate ligament using braided ultra-high molecular weight polyethylene. J Biomed Mater Res B Appl Biomater 2021; 110:1306-1318. [PMID: 34931730 DOI: 10.1002/jbm.b.35001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 11/16/2021] [Accepted: 12/09/2021] [Indexed: 11/11/2022]
Abstract
In this study, a ultra-high molecular weight polyethylene (UHMWPE) braided structure was surface modified with low temperature plasma and was coated with cationized gelatin and hyaluronic acid to improve its biocompatibility for the reconstruction of an anterior cruciate ligament (ACL). The ligament was studied for its various mechanical properties. Surface modifications were studied through FESEM. Biological compatibility of the ligament was assessed in accordance to ISO 10993 standard. Tensile strength of the UHMWPE reconstructed ligament ranges between 2628 and 5937 N; maximum tensile strength was attained in 1600 denier 2/2 pattern of triple braided structure along with higher strain at failure of 36.1%. In 1600 denier 2/2 pattern of triple braid structure, the linear stiffness was found to be high at 375 N/mm. Among the developed materials, four braided structures namely as 800 denier 2/2 pattern of double braids and triple braids, 1600 denier 1/1 pattern of double braid and 2/2 pattern of triple braid were found to be mechanically suitable. Specifically, the 1600 denier 2/2 pattern of triple braid having higher mechanical properties was selected for coating. The results of in-vitro cytotoxicity and genotoxicity confirmed the extract of ACL to non-toxic and non-mutant. Furthermore, in-vivo analysis of the extract and the coated ACL graft proved the ligament to be non-irritant, non-sensitizer and also found to promote new tissue formation around the graft. Based on the results, the CG and HA coated ACL graft were concluded to be biocompatible and having considerable potential as an alternate for autograft/allograft.
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Affiliation(s)
| | | | - Dhasarathi Jayaraman
- Spinning, Weaving and Knitting, The South India Textile Research Association (SITRA), Coimbatore, India
| | - Shanmugam Sounderraj
- Weaving and Knitting, The South India Textile Research Association (SITRA), Coimbatore, India
| | - K Rajendran Muthuukumar
- Centre of Excellence for Medical Textiles, The South India Textile Research Association (SITRA), Coimbatore, India
| | - Elango Santhini
- Centre of Excellence for Medical Textiles, The South India Textile Research Association (SITRA), Coimbatore, India
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9
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Motyka-Pomagruk A, Dzimitrowicz A, Orlowski J, Babinska W, Terefinko D, Rychlowski M, Prusinski M, Pohl P, Lojkowska E, Jamroz P, Sledz W. Implementation of a Non-Thermal Atmospheric Pressure Plasma for Eradication of Plant Pathogens from a Surface of Economically Important Seeds. Int J Mol Sci 2021; 22:9256. [PMID: 34502164 PMCID: PMC8431735 DOI: 10.3390/ijms22179256] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 02/03/2023] Open
Abstract
Plant pathogenic bacteria cause significant economic losses in the global food production sector. To secure an adequate amount of high-quality nutrition for the growing human population, novel approaches need to be undertaken to combat plant disease-causing agents. As the currently available methods to eliminate bacterial phytopathogens are scarce, we evaluated the effectiveness and mechanism of action of a non-thermal atmospheric pressure plasma (NTAPP). It was ignited from a dielectric barrier discharge (DBD) operation in a plasma pencil, and applied for the first time for eradication of Dickeya and Pectobacterium spp., inoculated either on glass spheres or mung bean seeds. Furthermore, the impact of the DBD exposure on mung bean seeds germination and seedlings growth was estimated. The observed bacterial inactivation rates exceeded 3.07 logs. The two-minute DBD exposure stimulated by 3-4% the germination rate of mung bean seeds and by 13.4% subsequent early growth of the seedlings. On the contrary, a detrimental action of the four-minute DBD subjection on seed germination and early growth of the sprouts was noted shortly after the treatment. However, this effect was no longer observed or reduced to 9.7% after the 96 h incubation period. Due to the application of optical emission spectrometry (OES), transmission electron microscopy (TEM), and confocal laser scanning microscopy (CLSM), we found that the generated reactive oxygen and nitrogen species (RONS), i.e., N2, N2+, NO, OH, NH, and O, probably led to the denaturation and aggregation of DNA, proteins, and ribosomes. Furthermore, the cellular membrane disrupted, leading to an outflow of the cytoplasm from the DBD-exposed cells. This study suggests the potential applicability of NTAPPs as eco-friendly and innovative plant protection methods.
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Affiliation(s)
- Agata Motyka-Pomagruk
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Anna Dzimitrowicz
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (A.D.); (D.T.); (P.P.); (P.J.)
| | - Jakub Orlowski
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Weronika Babinska
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Dominik Terefinko
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (A.D.); (D.T.); (P.P.); (P.J.)
| | - Michal Rychlowski
- Laboratory of Virus Molecular Biology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland;
| | - Michal Prusinski
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Pawel Pohl
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (A.D.); (D.T.); (P.P.); (P.J.)
| | - Ewa Lojkowska
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Piotr Jamroz
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (A.D.); (D.T.); (P.P.); (P.J.)
| | - Wojciech Sledz
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
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Labadie M, Marchal F, Merbahi N, Girbal-Neuhauser E, Fontagné-Faucher C, Marcato-Romain CE. Response of Controlled Cell Load Biofilms to Cold Atmospheric Plasma Jet: Evidence of Extracellular Matrix Contribution. Life (Basel) 2021; 11:life11070694. [PMID: 34357067 PMCID: PMC8304013 DOI: 10.3390/life11070694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 02/07/2023] Open
Abstract
Aim: Study of the biocidal effect of a cold atmospheric-pressure plasma in ambient air on single-species bacterial biofilms with controlled cell density, characterized by different extracellular matrices. Methods and results: Two bacterial strains were chosen to present different Gram properties and contrasted extracellular matrices: Pseudomonas aeruginosa ATCC 15442 (Gram-negative), and Leuconostoc citreum NRRL B-1299 (Gram-positive). P. aeruginosa biofilm exhibits a complex matrix, rich in proteins while L. citreum presents the specificity to produce glucan-type exopolysaccharides when grown in the presence of sucrose. Plasma was applied on both surface-spread cells and 24-h grown biofilms with controlled cell loads over 5, 10, or 20 min. Surface-spread bacteria showed a time dependent response, with a maximal bacterial reduction of 2.5 log after 20 min of treatment. On the other hand, in our experimental conditions, no bactericidal effect could be observed when treating biofilms of P. aeruginosa and glucan-rich L. citreum. Conclusions: For biofilms presenting equivalent cell loads, the response to plasma treatment seemed to depend on the properties of the extracellular matrix characterized by infrared spectroscopy, scanning electron microscopy, or dry weight. Significance and impact of study: Both cell load standardization and biofilm characterization are paramount factors to consider the biocide effect of plasma treatments. The extracellular matrix could affect the plasma efficacy by physical and/or chemical protective effects.
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Affiliation(s)
- Maritxu Labadie
- UPS, IUT “A”, LBAE EA 4565 (Laboratoire de Biotechnologies Agroalimentaire et Environnementale), Université de Toulouse, IUT Site d’AUCH, 24 rue d’Embaquès, F-32000 Auch, France; (M.L.); (E.G.-N.); (C.F.-F.)
| | - Frédéric Marchal
- UPS, INPT, CNRS, LAPLACE UMR 5213 (Laboratoire Plasma et Conversion d’Energie), Université de Toulouse, 118 Route de Narbonne, F-31062 Toulouse, France; (F.M.); (N.M.)
| | - Nofel Merbahi
- UPS, INPT, CNRS, LAPLACE UMR 5213 (Laboratoire Plasma et Conversion d’Energie), Université de Toulouse, 118 Route de Narbonne, F-31062 Toulouse, France; (F.M.); (N.M.)
| | - Elisabeth Girbal-Neuhauser
- UPS, IUT “A”, LBAE EA 4565 (Laboratoire de Biotechnologies Agroalimentaire et Environnementale), Université de Toulouse, IUT Site d’AUCH, 24 rue d’Embaquès, F-32000 Auch, France; (M.L.); (E.G.-N.); (C.F.-F.)
| | - Catherine Fontagné-Faucher
- UPS, IUT “A”, LBAE EA 4565 (Laboratoire de Biotechnologies Agroalimentaire et Environnementale), Université de Toulouse, IUT Site d’AUCH, 24 rue d’Embaquès, F-32000 Auch, France; (M.L.); (E.G.-N.); (C.F.-F.)
| | - Claire-Emmanuelle Marcato-Romain
- UPS, IUT “A”, LBAE EA 4565 (Laboratoire de Biotechnologies Agroalimentaire et Environnementale), Université de Toulouse, IUT Site d’AUCH, 24 rue d’Embaquès, F-32000 Auch, France; (M.L.); (E.G.-N.); (C.F.-F.)
- Correspondence: ; Tel.: +33-562-61-63-05
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11
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Rathod NB, Kahar SP, Ranveer RC, Annapure US. Cold plasma an emerging nonthermal technology for milk and milk products: A review. INT J DAIRY TECHNOL 2021. [DOI: 10.1111/1471-0307.12771] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Nikheel Bhojraj Rathod
- Department of PHM of Meat, Poultry and Fish PG Institute of Post‐Harvest Management (DBSKKV, Dapoli), Killa‐Roha Dist. Raigad MS 402 116 India
| | - Suraj Prembahadur Kahar
- Department of Food Engineering and Technology Institute of Chemical Technology (ICT) Mumbai MS 400019 India
| | - Rahul Chudaman Ranveer
- Department of PHM of Meat, Poultry and Fish PG Institute of Post‐Harvest Management (DBSKKV, Dapoli), Killa‐Roha Dist. Raigad MS 402 116 India
| | - Uday Shriramrao Annapure
- Department of Food Engineering and Technology Institute of Chemical Technology (ICT) Mumbai MS 400019 India
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Yadav B, Roopesh M. In-package atmospheric cold plasma inactivation of Salmonella in freeze-dried pet foods: Effect of inoculum population, water activity, and storage. INNOV FOOD SCI EMERG 2020. [DOI: 10.1016/j.ifset.2020.102543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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13
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The Combination of Plasma-Processed Air (PPA) and Plasma-Treated Water (PTW) Causes Synergistic Inactivation of Candida albicans SC5314. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10093303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Microwave-induced plasma was used for the generation of plasma-processed air (PPA) and plasma-treated water (PTW). By this way, the plasma was able to functionalize the compressed air and the used water to antimicrobial effective agents. Their fungicidal effects by single and combined application were investigated on Candida albicans strain SC5314. The monoculture of C. albicans was cultivated on specimens with polymeric surface structures (PE-stripes). The additive as well as the synergistic fungicidal potential of PPA and PTW was investigated by different process windows of plasma exposure time (5–50 s) and sample treatment time with PPA/PTW (1–5 min). For a single PTW or PPA treatment, an increase in the reduction factor with the indicated treatment time was observed (maximum reduction factor of 1.1 and 1.6, respectively). In comparison, the combined application of PTW and then PPA resulted in antagonistic, additive and synergistic effects, depending on the combination. An application of the synergistically acting processes of PTW for cleaning and PPA for drying can be an innovative alternative to the sanitary processes currently used in production plants.
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14
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Feizollahi E, Misra NN, Roopesh MS. Factors influencing the antimicrobial efficacy of Dielectric Barrier Discharge (DBD) Atmospheric Cold Plasma (ACP) in food processing applications. Crit Rev Food Sci Nutr 2020; 61:666-689. [PMID: 32208859 DOI: 10.1080/10408398.2020.1743967] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Atmospheric cold plasma (ACP) is an emerging technology in the food industry with a huge antimicrobial potential to improve safety and extend the shelf life of food products. Dielectric barrier discharge (DBD) is a popular approach for generating ACP. Thanks to the numerous advantages of DBD ACP, it is proving to be successful in a number of applications, including microbial decontamination of foods. The antimicrobial efficacy of DBD ACP is influenced by multiple factors. This review presents an overview of ACP sources, with an emphasis on DBD, and an analysis of their antimicrobial efficacy in foods in open atmosphere and in-package modes. Specifically, the influence of process, product, and microbiological factors influencing the antimicrobial efficacy of DBD ACP are critically reviewed. DBD ACP is a promising technology that can improve food safety with minimal impact on food quality under optimal conditions. Once the issues pertinent to scale-up of plasma sources are appropriately addressed, the DBD ACP technology will find wider adaptation in food industry.
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Affiliation(s)
- Ehsan Feizollahi
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, Canada
| | - N N Misra
- Department of Engineering, Faculty of Agriculture, Dalhousie University, Halifax, NS, Canada
| | - M S Roopesh
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, Canada
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15
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Ambrico PF, Šimek M, Rotolo C, Morano M, Minafra A, Ambrico M, Pollastro S, Gerin D, Faretra F, De Miccolis Angelini RM. Surface Dielectric Barrier Discharge plasma: a suitable measure against fungal plant pathogens. Sci Rep 2020; 10:3673. [PMID: 32111863 PMCID: PMC7048822 DOI: 10.1038/s41598-020-60461-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/03/2020] [Indexed: 01/08/2023] Open
Abstract
Fungal diseases seriously affect agricultural production and the food industry. Crop protection is usually achieved by synthetic fungicides, therefore more sustainable and innovative technologies are increasingly required. The atmospheric pressure low-temperature plasma is a novel suitable measure. We report on the effect of plasma treatment on phytopathogenic fungi causing quantitative and qualitative losses of products both in the field and postharvest. We focus our attention on the in vitro direct inhibitory effect of non-contact Surface Dielectric Barrier Discharge on conidia germination of Botrytis cinerea, Monilinia fructicola, Aspergillus carbonarius and Alternaria alternata. A few minutes of treatment was required to completely inactivate the fungi on an artificial medium. Morphological analysis of spores by Scanning Electron Microscopy suggests that the main mechanism is plasma etching due to Reactive Oxygen Species or UV radiation. Spectroscopic analysis of plasma generated in humid air gives the hint that the rotational temperature of gas should not play a relevant role being very close to room temperature. In vivo experiments on artificially inoculated cherry fruits demonstrated that inactivation of fungal spores by the direct inhibitory effect of plasma extend their shelf life. Pre-treatment of fruits before inoculation improve the resistance to infections maybe by activating defense responses in plant tissues.
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Affiliation(s)
- Paolo F Ambrico
- Consiglio Nazionale delle Ricerche, Istituto per la Scienza e la Tecnologia dei Plasmi, via Amendola 122/D, 70126, Bari, Italy.
| | - Milan Šimek
- Academy of Sciences of the Czech Republic, Institute of Plasma Physics v.v.i., Department of Pulse Plasma Systems, Za Slovankou 1782/3, 18200, Prague, Czech Republic
| | - Caterina Rotolo
- Department of Soil, Plant and Food Sciences, University of Bari ALDO MORO, via G. Amendola 165/A, 70126, Bari, Italy
| | - Massimo Morano
- Department of Soil, Plant and Food Sciences, University of Bari ALDO MORO, via G. Amendola 165/A, 70126, Bari, Italy
| | - Angelantonio Minafra
- Consiglio Nazionale delle Ricerche, Istituto per la Protezione Sostenibile delle Piante, via Amendola 122/D, 70126, Bari, Italy
| | - Marianna Ambrico
- Consiglio Nazionale delle Ricerche, Istituto per la Scienza e la Tecnologia dei Plasmi, via Amendola 122/D, 70126, Bari, Italy
| | - Stefania Pollastro
- Department of Soil, Plant and Food Sciences, University of Bari ALDO MORO, via G. Amendola 165/A, 70126, Bari, Italy
| | - Donato Gerin
- Department of Soil, Plant and Food Sciences, University of Bari ALDO MORO, via G. Amendola 165/A, 70126, Bari, Italy
| | - Francesco Faretra
- Department of Soil, Plant and Food Sciences, University of Bari ALDO MORO, via G. Amendola 165/A, 70126, Bari, Italy.
| | - Rita M De Miccolis Angelini
- Department of Soil, Plant and Food Sciences, University of Bari ALDO MORO, via G. Amendola 165/A, 70126, Bari, Italy
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16
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Fernández-Gutierrez D, Veillette M, Ávalos Ramirez A, Giroir-Fendler A, Faucheux N, Heitz M. Biovalorization of glucose in four culture media and effect of the nitrogen source on fermentative alcohols production by Escherichia coli. ENVIRONMENTAL TECHNOLOGY 2020; 41:211-221. [PMID: 29969951 DOI: 10.1080/09593330.2018.1494751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 06/22/2018] [Indexed: 06/08/2023]
Abstract
Glucose is one of the most abundant monosaccharides and the easiest carbon source to be consumed by bacteria. In this study, four culture media (LB, M9, M63 and MOPS) were supplemented with glucose at three different concentrations (4, 12.5 and 25 g/L) in the presence of a genetically modified strain of Escherichia coli with the purpose of selecting the most suitable culture medium to obtain ABD (acetoin (A) and 2,3-butanediol (2,3-BD)). The selected medium was M9, the cheapest culture medium, since the ABD yields obtained fermenting 12.5 and 25 g/L of glucose in M9 culture medium at 37°C, atmospheric pressure, initial pH 6.5, 100 rpm and 10% (v/v) of inoculum were similar compared to the ABD yields obtained using M63 and LB culture media. The influence of nitrogen on ABD yield was tested adding sodium nitrate (NaNO3) or urea ((NH2)2CO) to M9 culture medium at three different nitrogen concentrations (2.5, 5.0 and 7.0 g N/L). Adding urea (7.0 g N/L) to M9 supplemented with 25 g/L of glucose improved by 23% the ABD yield at 96 h compared to M9 without urea, reaching a value of 27.2% (g ABD/g glucose). In contrast, the use of NaNO3 had no significant effect on the ABD yield.
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Affiliation(s)
- David Fernández-Gutierrez
- Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, Canada
- Université Lyon 1, CNRS, UMR 5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne Cedex, France
| | - Marc Veillette
- Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, Canada
| | - Antonio Ávalos Ramirez
- Centre National en Électrochimie et en Technologies Environnementales, Shawinigan, Canada
| | - Anne Giroir-Fendler
- Université Lyon 1, CNRS, UMR 5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de Lyon, Villeurbanne Cedex, France
| | - Nathalie Faucheux
- Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, Canada
| | - Michèle Heitz
- Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke, Sherbrooke, Canada
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17
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Iqdiam BM, Abuagela MO, Boz Z, Marshall SM, Goodrich‐Schneider R, Sims CA, Marshall MR, MacIntosh AJ, Welt BA. Effects of atmospheric pressure plasma jet treatment on aflatoxin level, physiochemical quality, and sensory attributes of peanuts. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14305] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Basheer M. Iqdiam
- Food Science and Human Nutrition Department Institute of Food and Agricultural Sciences University of Florida Gainesville Florida
- Agricultural and Biological Engineering Department University of Florida Gainesville Florida
| | - Manal O. Abuagela
- Food Science and Human Nutrition Department Institute of Food and Agricultural Sciences University of Florida Gainesville Florida
| | - Ziynet Boz
- Agricultural and Biological Engineering Department University of Florida Gainesville Florida
| | - Sara M. Marshall
- Food Science and Human Nutrition Department Institute of Food and Agricultural Sciences University of Florida Gainesville Florida
| | - Renee Goodrich‐Schneider
- Food Science and Human Nutrition Department Institute of Food and Agricultural Sciences University of Florida Gainesville Florida
| | - Charles A. Sims
- Food Science and Human Nutrition Department Institute of Food and Agricultural Sciences University of Florida Gainesville Florida
| | - Maurice R. Marshall
- Food Science and Human Nutrition Department Institute of Food and Agricultural Sciences University of Florida Gainesville Florida
| | - Andrew J. MacIntosh
- Food Science and Human Nutrition Department Institute of Food and Agricultural Sciences University of Florida Gainesville Florida
| | - Bruce A. Welt
- Agricultural and Biological Engineering Department University of Florida Gainesville Florida
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18
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In vitro evaluation of the decontamination effect of cold atmospheric argon plasma on selected bacteria frequently encountered in small animal bite injuries. J Microbiol Methods 2019; 169:105728. [PMID: 31629909 DOI: 10.1016/j.mimet.2019.105728] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 09/20/2019] [Accepted: 09/20/2019] [Indexed: 01/19/2023]
Abstract
Beneficial effects of cold atmospheric argon plasma (CAAP) on wound healing and its capacity for bacterial decontamination has recently been documented. First, in vivo studies in small animals did not prove any decontamination effect in canine bite wounds. The present study evaluated the overall decontamination effect of CAAP for different bacteria frequently encountered in canine bite wounds with respect to growth phase, initial bacteria concentration and treatment duration. Standard strains of Escherichia (E.) coli, Staphylococcus (S.) pseudintermedius, S. aureus, Streptococcus (S.) canis, Pseudomonas (P.) aeruginosa and Pasteurella multocida were investigated. To evaluate the influence of the bacterial growth phase, each bacterium was incubated for three and eight hours, before CAAP treatment. Three different bacterial concentrations were created per bacterium and growth phase, and were exposed to CAAP for 30 s, 1 min and 2 min. CAAP treatment resulted in acceptable decontamination rates (range 98.9-99.9%) in all bacteria species in vitro; however, differences in susceptibility were detected. Decontamination rate was mainly influenced by initial bacterial concentration and treatment time. Growth phase only influenced decontamination in S. pseudintermedius. Treatment time significantly (P < .05) correlated with the decontamination rate in E. coli, S. canis and S. aureus, with an exposure time of 2 min being most effective. Initial bacterial concentration significantly (P < .05) influenced decontamination in Pasteurella multocida and P. aeruginosa, in which treatment time was not as important. CAAP exerts effective antibacterial activity against the tested bacteria strains in vitro, with species specific effects of treatment time, growth phase and concentration.
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López M, Calvo T, Prieto M, Múgica-Vidal R, Muro-Fraguas I, Alba-Elías F, Alvarez-Ordóñez A. A Review on Non-thermal Atmospheric Plasma for Food Preservation: Mode of Action, Determinants of Effectiveness, and Applications. Front Microbiol 2019; 10:622. [PMID: 31001215 PMCID: PMC6454144 DOI: 10.3389/fmicb.2019.00622] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 03/12/2019] [Indexed: 11/13/2022] Open
Abstract
Non-thermal Atmospheric Plasma (NTAP) is a cutting-edge technology which has gained much attention during the last decade in the food-processing sector as a promising technology for food preservation and maintenance of food safety, with minimal impact on the quality attributes of foods, thanks to its effectiveness in microbial inactivation, including of pathogens, spoilage fungi and bacterial spores, simple design, ease of use, cost-effective operation, short treatment times, lack of toxic effects, and significant reduction of water consumption. This review article provides a general overview of the principles of operation and applications of NTAP in the agri-food sector. In particular, the numerous studies carried out in the last decade aimed at deciphering the influence of different environmental factors and processing parameters on the microbial inactivation attained are discussed. In addition, this review also considers some important studies aimed at elucidating the complex mechanism of microbial inactivation by NTAP. Finally, other potential applications of NTAP in the agri-food sector, apart from food decontamination, are briefly described, and some limitations for the immediate industrial implementation of NTAP are discussed (e.g., impact on the nutritional and sensory quality of treated foods; knowledge on the plasma components and reactive species responsible for the antimicrobial activity; possible toxicity of some of the chemical species generated; scale-up by designing fit-for-purpose equipment).
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Affiliation(s)
- Mercedes López
- Department of Food Hygiene and Technology, Universidad de León, León, Spain.,Institute of Food Science and Technology, Universidad de León, León, Spain
| | - Tamara Calvo
- Department of Food Hygiene and Technology, Universidad de León, León, Spain
| | - Miguel Prieto
- Department of Food Hygiene and Technology, Universidad de León, León, Spain.,Institute of Food Science and Technology, Universidad de León, León, Spain
| | | | | | - Fernando Alba-Elías
- Department of Mechanical Engineering, Universidad de La Rioja, Logroño, Spain
| | - Avelino Alvarez-Ordóñez
- Department of Food Hygiene and Technology, Universidad de León, León, Spain.,Institute of Food Science and Technology, Universidad de León, León, Spain
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20
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Schnabel U, Handorf O, Yarova K, Zessin B, Zechlin S, Sydow D, Zellmer E, Stachowiak J, Andrasch M, Below H, Ehlbeck J. Plasma-Treated Air and Water-Assessment of Synergistic Antimicrobial Effects for Sanitation of Food Processing Surfaces and Environment. Foods 2019; 8:foods8020055. [PMID: 30717375 PMCID: PMC6406376 DOI: 10.3390/foods8020055] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 01/28/2023] Open
Abstract
The synergistic antimicrobial effects of plasma-processed air (PPA) and plasma-treated water (PTW), which are indirectly generated by a microwave-induced non-atmospheric pressure plasma, were investigated with the aid of proliferation assays. For this purpose, microorganisms (Listeria monocytogenes, Escherichia coli, Pectobacterium carotovorum, sporulated Bacillus atrophaeus) were cultivated as monocultures on specimens with polymeric surface structures. Both the distinct and synergistic antimicrobial potential of PPA and PTW were governed by the plasma-on time (5⁻50 s) and the treatment time of the specimens with PPA/PTW (1⁻5 min). In single PTW treatment of the bacteria, an elevation of the reduction factor with increasing treatment time could be observed (e.g., reduction factor of 2.4 to 3.0 for P. carotovorum). In comparison, the combination of PTW and subsequent PPA treatment leads to synergistic effects that are clearly not induced by longer treatment times. These findings have been valid for all bacteria (L. monocytogenes > P. carotovorum = E. coli). Controversially, the effect is reversed for endospores of B. atrophaeus. With pure PPA treatment, a strong inactivation at 50 s plasma-on time is detectable, whereas single PTW treatment shows no effect even with increasing treatment parameters. The use of synergistic effects of PTW for cleaning and PPA for drying shows a clear alternative for currently used sanitation methods in production plants. Highlights: Non-thermal atmospheric pressure microwave plasma source used indirect in two different modes-gaseous and liquid; Measurement of short and long-living nitrite and nitrate in corrosive gas PPA (plasma-processed air) and complex liquid PTW (plasma-treated water); Application of PTW and PPA in single and combined use for biological decontamination of different microorganisms.
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Affiliation(s)
- Uta Schnabel
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
- School of Food Science and Environmental Health, College of Sciences and Health, Technological University Dublin, Cathal Brugha Street, D01 HV58 Dublin, Ireland.
| | - Oliver Handorf
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
| | - Kateryna Yarova
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
| | - Björn Zessin
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
| | - Susann Zechlin
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
| | - Diana Sydow
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
| | - Elke Zellmer
- Institute for Hygiene and Environmental Medicine, Faculty of Medicine, University of Greifswald, Walter-Rathenau-Straße 49A, 17475 Greifswald, Germany.
| | - Jörg Stachowiak
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
| | - Mathias Andrasch
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
| | - Harald Below
- Institute for Hygiene and Environmental Medicine, Faculty of Medicine, University of Greifswald, Walter-Rathenau-Straße 49A, 17475 Greifswald, Germany.
| | - Jörg Ehlbeck
- Plasma Bioengineering, Leibniz Institute for Plasma Science and Technology e.V., Felix-Hausdorff-Straße 2, 17491 Greifswald, Germany.
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21
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Stulić V, Vukušić T, Butorac A, Popović D, Herceg Z. Proteomic analysis of Saccharomyces cerevisiae response to plasma treatment. Int J Food Microbiol 2018; 292:171-183. [PMID: 30639916 DOI: 10.1016/j.ijfoodmicro.2018.12.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/13/2018] [Accepted: 12/19/2018] [Indexed: 11/24/2022]
Abstract
Food safety is one of the main issues for the food industry. Regarding the increased reports of food-associated infections new non-thermal technologies are rapidly developing and improving. The aim of this research was to define the inactivation, recovery and stress response of Saccharomyces cerevisiae ATCC 204508 cells after the treatment by high voltage gas phase plasma and liquid phase plasma discharges in bubbles. Variations of the plasma frequency (60, 90 and 120 Hz), input gas (air or argon) and processing time (5 and 10 min) have been used to define plasma effects on S. cerevisiae cells. Complete inactivation's by liquid plasma in bubbles were determined as well as recovery of treated samples. Transmission electron microscopy figures showed cells with the normal cell shape and intact inner and outer membrane after the plasma treatments. Proteomic analyses indicated overexpressed proteins which contributed in cell defense mechanisms to overcome stress conditions. S. cerevisiae ATCC 204508 cells were under the stress, but with the proven ability to recover its metabolic activity.
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Affiliation(s)
- Višnja Stulić
- Department of Food Engineering, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Tomislava Vukušić
- Department of Food Engineering, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia.
| | - Ana Butorac
- BioCentre Ltd., Borongajska street 83h, Zagreb, Croatia
| | - Dean Popović
- Institute of Physics Zagreb, Bijenička street 46, 10000 Zagreb, Croatia
| | - Zoran Herceg
- Department of Food Engineering, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
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22
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Waskow A, Betschart J, Butscher D, Oberbossel G, Klöti D, Büttner-Mainik A, Adamcik J, von Rohr PR, Schuppler M. Characterization of Efficiency and Mechanisms of Cold Atmospheric Pressure Plasma Decontamination of Seeds for Sprout Production. Front Microbiol 2018; 9:3164. [PMID: 30619223 PMCID: PMC6305722 DOI: 10.3389/fmicb.2018.03164] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 12/06/2018] [Indexed: 11/17/2022] Open
Abstract
The consumption of fresh fruit and vegetable products has strongly increased during the past few decades. However, inherent to all minimally processed products is the short shelf life, and the risk of foodborne diseases, which have been increasingly related to such products in many parts of the world. Because of the favorable conditions for the growth of bacteria during the germination of seeds, sprouts are a frequent source for pathogenic bacteria, thus highlighting the need for seed decontamination to reduce the risk of foodborne illness. Consequently, this study focused on cold atmospheric pressure plasma (CAPP) treatment of artificially inoculated seeds in a diffuse coplanar surface barrier discharge to determine the inactivation efficiency for relevant foodborne pathogens and fungal spores. Plasma treatment of seeds resulted in a highly efficient reduction of microorganisms on the seed surface, while preserving the germination properties of seeds, at least for moderate treatment times. To characterize the mechanisms that contribute to microbial inactivation during plasma treatment, an experimental setup was developed to separate ultraviolet light (UV) and other plasma components. The combination of bacterial viability staining with confocal laser scanning microscopy was used to investigate the impact of ozone and other reactive species on the bacterial cells in comparison to UV. Further characterization of the effect of CAPP on bacterial cells by atomic force microscopy imaging of the same Escherichia coli cells before and after treatment revealed an increase in the surface roughness of treated E. coli cells and a decrease in the average height of the cells, which suggests physical damage to the cell envelope. In conclusion, CAPP shows potential for use as a decontamination technology in the production process of sprouts, which may contribute to food safety and prolonged shelf life of the product.
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Affiliation(s)
- Alexandra Waskow
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland
| | - Julian Betschart
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland
| | - Denis Butscher
- Institute of Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Gina Oberbossel
- Institute of Process Engineering, ETH Zurich, Zurich, Switzerland
| | | | | | - Jozef Adamcik
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland
| | | | - Markus Schuppler
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland
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23
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Hafner S, Ehrenfeld M, Neumann AC, Wieser A. Comparison of the bactericidal effect of cold atmospheric pressure plasma (CAPP), antimicrobial photodynamic therapy (aPDT), and polihexanide (PHX) in a novel wet surface model to mimic oral cavity application. J Craniomaxillofac Surg 2018; 46:2197-2202. [PMID: 30316654 DOI: 10.1016/j.jcms.2018.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/21/2018] [Accepted: 09/10/2018] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Cold atmospheric pressure plasma (CAPP) is increasingly used for medical applications. The first devices are available from commercial manufactures, promising to improve wound healing and disinfection. The underlying antimicrobial mechanisms of CAPP are discussed, while the first results on its bactericidal efficiency against common bacterial species have already been published, with promising results. Most of the plasma sources used in these studies were built by the investigators themselves, and are not commercially available or licensed for clinical use. To evaluate the postulated bactericidal effects in clinical practice, we studied a commercially available, ready-to-use CAPP-device, which is also designed to be used in the field of dental, oral, and maxillofacial treatment. MATERIALS AND METHODS Standardized bacterial cultures of two different pathogens (Acinetobacter baumannii and Staphylococcus aureus) were produced with defined colony-forming unit concentrations. Dilutions of these cultures were treated with a commercially available CAPP product according to the manufacturer's instructions in order to evaluate the antimicrobial activity of the technique. This in vitro study compared the CAPP treatment with established clinical therapies like polihexanide (PHX) and antimicrobial photodynamic therapy (aPDT). RESULTS The bactericidal effect was evaluated in terms of reduction in colony-forming units after treatment of the bacterial samples with a defined dose of plasma, aPDT, or PHX. For CAPP, the bactericidal effect was found to be stronger in the Gram-negative isolate (A. baumannii) than in the Gram-positive S. aureus. A strong depth dependency was observed, especially with the Gram-negative isolate. Good bactericidal effects, with a reduction in bacterial load of more than 2 × log10, could only be observed in conditions of 0.3 mm of water-film thickness or less. Such a significant reduction in bactericidal effect depending on depth was not observed using aPDT or PHX in the studied depth range of 0.3-1.8 mm. CONCLUSION CAPP treatment performed by the device (Plasma ONE) and configuration we used in this study seems to be ill suited for sufficiently killing Acinetobacter baumannii or Staphylococcus aureus in a moist infection site, as would be expected in the oral cavity. Established local antimicrobial therapies using PHX or aPDT showed better disinfectant properties. The clinical effect of improved wound healing, described by the manufacturer and some scientists, could not be investigated using this model. Given the results, however, it seems unlikely to be a direct consequence of bactericidal effects of CAPP in a wet environment. Further development of CAPP devices, or a different configuration (e.g. with a higher output, resulting in reactive nitrogen species-dominated, gas-phase chemistry), may enhance antibacterial effects in future, while tissue compatibility of such techniques remains to be elucidated further.
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Affiliation(s)
- S Hafner
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, LMU Munich, 80337 Munich, Germany.
| | - M Ehrenfeld
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery, University Hospital, LMU Munich, 80337 Munich, Germany
| | - A-C Neumann
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, 80802 Munich, Germany
| | - Andreas Wieser
- Division of Infectious Diseases and Tropical Medicine, University Hospital, LMU Munich, 80802 Munich, Germany; German Center for Infection Research (DZIF), Partner Site Munich, 80802 Munich, Germany; Chair of Medical Microbiology and Hospital Epidemiology, Max von Pettenkofer Institute, Faculty of Medicine, LMU Munich, 81377 Munich, Germany.
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24
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Cold atmospheric pressure plasma and low energy electron beam as alternative nonthermal decontamination technologies for dry food surfaces: A review. Trends Food Sci Technol 2018. [DOI: 10.1016/j.tifs.2018.05.011] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Segura-Ponce LA, Reyes JE, Troncoso-Contreras G, Valenzuela-Tapia G. Effect of Low-pressure Cold Plasma (LPCP) on the Wettability and the Inactivation of Escherichia coli and Listeria innocua on Fresh-Cut Apple (Granny Smith) Skin. FOOD BIOPROCESS TECH 2018. [DOI: 10.1007/s11947-018-2079-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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Liao X, Liu D, Xiang Q, Ahn J, Chen S, Ye X, Ding T. Inactivation mechanisms of non-thermal plasma on microbes: A review. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.12.021] [Citation(s) in RCA: 176] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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27
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Choi S, Attri P, Lee I, Oh J, Yun JH, Park JH, Choi EH, Lee W. Structural and functional analysis of lysozyme after treatment with dielectric barrier discharge plasma and atmospheric pressure plasma jet. Sci Rep 2017; 7:1027. [PMID: 28432354 PMCID: PMC5430822 DOI: 10.1038/s41598-017-01030-w] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 03/28/2017] [Indexed: 11/09/2022] Open
Abstract
The variation in the biological function of proteins plays an important role in plasma medicine and sterilization. Several non-thermal plasma sources with different feeding gases are used worldwide for plasma treatment, including dielectric barrier discharge (DBD) and atmospheric-pressure plasma jet (APPJ) as the most commonly used sources. Therefore, in the present work, we used both DBD and APPJ plasma sources with N2 and air as feeding gases to evaluate the effects on the structural, thermodynamic, and activity changes of enzymes. In the current work, we used lysozyme as a model enzyme and verified the structural changes using circular dichroism (CD), fluorescence, and X-ray crystallography. In addition, we investigated the lysozyme thermodynamics using CD thermal analysis and changes in the B-factor from X-ray crystallography. The results showed that lysozyme activity decreased after the plasma treatment. From these analyses, we concluded that N2-feeding gas plasma disturbs the structure and activity of lysozyme more than Air feeding gas plasma in our experimental studies. This study provides novel fundamental information on the changes to enzymes upon plasma treatment, which has been absent from the literature until now.
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Affiliation(s)
- Sooho Choi
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul, 120-749, Korea
| | - Pankaj Attri
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 139-701, Korea
| | - Inhwan Lee
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul, 120-749, Korea
| | - Jeongmin Oh
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul, 120-749, Korea
| | - Ji-Hye Yun
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul, 120-749, Korea
| | - Ji Hoon Park
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 139-701, Korea
| | - Eun Ha Choi
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, 139-701, Korea
| | - Weontae Lee
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul, 120-749, Korea.
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28
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Atmospheric pressure plasma jet treatment of Salmonella Enteritidis inoculated eggshells. Int J Food Microbiol 2017; 245:22-28. [DOI: 10.1016/j.ijfoodmicro.2017.01.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 12/31/2016] [Accepted: 01/07/2017] [Indexed: 11/19/2022]
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29
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Helgadóttir S, Pandit S, Mokkapati VRSS, Westerlund F, Apell P, Mijakovic I. Vitamin C Pretreatment Enhances the Antibacterial Effect of Cold Atmospheric Plasma. Front Cell Infect Microbiol 2017; 7:43. [PMID: 28275584 PMCID: PMC5319976 DOI: 10.3389/fcimb.2017.00043] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 02/07/2017] [Indexed: 01/12/2023] Open
Abstract
Bacterial biofilms are three-dimensional structures containing bacterial cells enveloped in a protective polymeric matrix, which renders them highly resistant to antibiotics and the human immune system. Therefore, the capacity to make biofilms is considered as a major virulence factor for pathogenic bacteria. Cold Atmospheric Plasma (CAP) is known to be quite efficient in eradicating planktonic bacteria, but its effectiveness against biofilms has not been thoroughly investigated. The goal of this study was to evaluate the effect of exposure of CAP against mature biofilm for different time intervals and to evaluate the effect of combined treatment with vitamin C. We demonstrate that CAP is not very effective against 48 h mature bacterial biofilms of several common opportunistic pathogens: Staphylococcus epidermidis, Escherichia coli, and Pseudomonas aeruginosa. However, if bacterial biofilms are pre-treated with vitamin C for 15 min before exposure to CAP, a significantly stronger bactericidal effect can be obtained. Vitamin C pretreatment enhances the bactericidal effect of cold plasma by reducing the viability from 10 to 2% in E. coli biofilm, 50 to 11% in P. aeruginosa, and 61 to 18% in S. epidermidis biofilm. Since it is not feasible to use extended CAP treatments in medical practice, we argue that the pre-treatment of infectious lesions with vitamin C prior to CAP exposure can be a viable route for efficient eradication of bacterial biofilms in many different applications.
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Affiliation(s)
- Saga Helgadóttir
- Department of Physics, Chalmers University of Technology Göteborg, Sweden
| | - Santosh Pandit
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology Gothenburg, Sweden
| | - Venkata R S S Mokkapati
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of Technology Gothenburg, Sweden
| | - Fredrik Westerlund
- Chemical Biology, Department of Biology and Biological Engineering, Chalmers University of Technology Gothenburg, Sweden
| | - Peter Apell
- Department of Physics, Chalmers University of Technology Göteborg, Sweden
| | - Ivan Mijakovic
- Systems and Synthetic Biology Division, Department of Biology and Biological Engineering, Chalmers University of TechnologyGothenburg, Sweden; Novo Nordisk Foundation Center for Biosustainability, Technical University of DenmarkLyngby, Denmark
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30
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Malik DJ, Shaw CM, Shama G, Clokie MRJ, Rielly CD. An Investigation into the Inactivation Kinetics of Hydrogen Peroxide Vapor Against Clostridium difficile Endospores. CHEM ENG COMMUN 2016. [DOI: 10.1080/00986445.2016.1223058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- D. J. Malik
- Department of Chemical Engineering, Loughborough University, Loughborough, Leicester, LE11 3TU, UK
| | - C. M. Shaw
- Department of Chemical Engineering, Loughborough University, Loughborough, Leicester, LE11 3TU, UK
| | - G. Shama
- Department of Chemical Engineering, Loughborough University, Loughborough, Leicester, LE11 3TU, UK
| | - M. R. J. Clokie
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, LE1 9HN, UK
| | - C. D. Rielly
- Department of Chemical Engineering, Loughborough University, Loughborough, Leicester, LE11 3TU, UK
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31
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Variation in structure of proteins by adjusting reactive oxygen and nitrogen species generated from dielectric barrier discharge jet. Sci Rep 2016; 6:35883. [PMID: 27779212 PMCID: PMC5078802 DOI: 10.1038/srep35883] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 10/07/2016] [Indexed: 12/31/2022] Open
Abstract
Over the last few years, the variation in liquid chemistry due to the development of radicals generated by cold atmospheric plasma (CAP) has played an important role in plasma medicine. CAP direct treatment or CAP activated media treatment in cancer cells shows promising anticancer activity for both in vivo and in vitro studies. However, the anticancer activity or antimicrobial activity varies between plasma devices due to the different abilities among plasma devices to generate the reactive oxygen and nitrogen species (RONS) at different ratios and in different concentrations. While the generation of RONS depends on many factors, the feeding gas plays the most important role among the factors. Hence, in this study we used different compositions of feeding gas while fixing all other plasma characteristics. We used Ar, Ar-O2 (at different ratios), and Ar-N2 (at different ratios) as the working gases for CAP and investigated the structural changes in proteins (Hemoglobin (Hb) and Myoglobin (Mb)). We then analyzed the influence of RONS generated in liquid on the conformations of proteins. Additionally, to determine the influence of H2O2 on the Hb and Mb structures, we used molecular dynamic simulation.
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32
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Karahan HE, Wei L, Goh K, Liu Z, Birer Ö, Dehghani F, Xu C, Wei J, Chen Y. Bacterial physiology is a key modulator of the antibacterial activity of graphene oxide. NANOSCALE 2016; 8:17181-17189. [PMID: 27722381 DOI: 10.1039/c6nr05745d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Carbon-based nanomaterials have a great potential as novel antibacterial agents; however, their interactions with bacteria are not fully understood. This study demonstrates that the antibacterial activity of graphene oxide (GO) depends on the physiological state of cells for both Gram-negative and -positive bacteria. GO susceptibility of bacteria is the highest in the exponential growth phase, which are in growing physiology, and stationary-phase (non-growing) cells are quite resistant against GO. Importantly, the order of GO susceptibility of E. coli with respect to the growth phases (exponential ≫ decline > stationary) correlates well with the changes in the envelope ultrastructures of the cells. Our findings are not only fundamentally important but also particularly critical for practical antimicrobial applications of carbon-based nanomaterials.
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Affiliation(s)
- H Enis Karahan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore and Singapore Institute of Manufacturing Technology (SIMTech), Singapore, 638075, Singapore.
| | - Li Wei
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW 2006, Australia.
| | - Kunli Goh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Zhe Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Özgür Birer
- Chemistry Department, Koç University, Rumelifeneri Yolu, Sarıyer, 34450, Istanbul, Turkey and KUYTAM Surface Science and Technology Center, Koç University, Rumelifeneri Yolu, Sarıyer, 34450, Istanbul, Turkey
| | - Fariba Dehghani
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW 2006, Australia.
| | - Chenjie Xu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore and NTU-Northwestern Institute of Nanomedicine, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Jun Wei
- Singapore Institute of Manufacturing Technology (SIMTech), Singapore, 638075, Singapore.
| | - Yuan Chen
- School of Chemical and Biomolecular Engineering, The University of Sydney, NSW 2006, Australia.
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33
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Han L, Ziuzina D, Heslin C, Boehm D, Patange A, Sango DM, Valdramidis VP, Cullen PJ, Bourke P. Controlling Microbial Safety Challenges of Meat Using High Voltage Atmospheric Cold Plasma. Front Microbiol 2016; 7:977. [PMID: 27446018 PMCID: PMC4916165 DOI: 10.3389/fmicb.2016.00977] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 06/06/2016] [Indexed: 12/22/2022] Open
Abstract
Atmospheric cold plasma (ACP) is a non-thermal technology, effective against a wide range of pathogenic microorganisms. Inactivation efficacy results from plasma generated reactive species. These may interact with any organic components in a test matrix including the target microorganism, thus food components may exert a protective effect against the antimicrobial mode of action. The effect of an in-package high voltage ACP process applied in conjunction with common meat processing MAP gas compositions as well as bacteria type and meat model media composition have been investigated to determine the applicability of this technology for decontamination of safety challenges associated with meat products. E. coli, L. monocytogenes, and S. aureus in PBS were undetectable after 60 s of treatment at 80 kVRMS in air, while ACP treatment of the contaminated meat model required post-treatment refrigeration to retain antimicrobial effect. The nutritive components in the meat model exerted a protective effect during treatment, where 300 s ACP exposure yielded a maximum reduction of 1.5 log using a high oxygen atmosphere, whilst using air and high nitrogen atmospheres yielded lower antimicrobial efficacy. Furthermore, an ROS assay was performed to understand the protective effects observed using the meat model. This revealed that nutritive components inhibited penetration of ROS into bacterial cells. This knowledge can assist the optimization of meat decontamination using ACP technology where interactions with all components of the food matrix require evaluation.
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Affiliation(s)
- Lu Han
- School of Food Science and Environmental Health, Dublin Institute of Technology Dublin, Ireland
| | - Dana Ziuzina
- School of Food Science and Environmental Health, Dublin Institute of Technology Dublin, Ireland
| | - Caitlin Heslin
- School of Food Science and Environmental Health, Dublin Institute of Technology Dublin, Ireland
| | - Daniela Boehm
- School of Food Science and Environmental Health, Dublin Institute of Technology Dublin, Ireland
| | - Apurva Patange
- School of Food Science and Environmental Health, Dublin Institute of Technology Dublin, Ireland
| | - David M Sango
- Department of Food Studies and Environmental Health, Faculty of Health Sciences, University of Malta Msida, Malta
| | - Vasilis P Valdramidis
- Department of Food Studies and Environmental Health, Faculty of Health Sciences, University of Malta Msida, Malta
| | - Patrick J Cullen
- School of Food Science and Environmental Health, Dublin Institute of TechnologyDublin, Ireland; School of Chemical Engineering, University of New South WalesSydney, NSW, Australia
| | - Paula Bourke
- School of Food Science and Environmental Health, Dublin Institute of Technology Dublin, Ireland
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34
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Preissner S, Wirtz HC, Tietz AK, Abu-Sirhan S, Herbst SR, Hartwig S, Pierdzioch P, Schmidt-Westhausen AM, Dommisch H, Hertel M. Bactericidal efficacy of tissue tolerable plasma on microrough titanium dental implants: An in-vitro-study. JOURNAL OF BIOPHOTONICS 2016; 9:637-644. [PMID: 26349849 DOI: 10.1002/jbio.201500189] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 07/27/2015] [Accepted: 07/27/2015] [Indexed: 06/05/2023]
Abstract
Surface decontamination remains challenging in peri-implant infection therapy. To investigate the bactericidal efficacy of tissue tolerable plasma, S. mitis biofilms were created in vitro on 32 microrough titanium dental implants. Biofilm imaging was performed by confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). The implants were either rinsed with 1% NaCl as negative control (C) or irradiated with a diode laser (DL) for 60 sec as positive control or plasma (TTP60, TTP120) for 60 or 120 sec. Subsequently, colony forming units (CFU) were counted. Post-treatment, implants were further examined using fluorescence microscopy (FM). Median CFU counts differed significantly between TTP60, TTP120 and C (2.19 and 2.2 vs. 3.29 log CFU/ml; p = 0.012 and 0.024). No significant difference was found between TTP60 and TTP120 (p = 0.958). Logarithmic reduction factors were (TTP60) 2.21, (TTP120) 1.93 and (DL) 0.59. Prior to treatment, CLSM and SEM detected adhering bacteria. Post-treatment FM recorded that the number of dead cells was higher using TTP compared to DL and C. In view of TTP's effectiveness, regardless of resistance patterns and absence of surface alteration, its use in peri-implant infection therapy is promising. The results encourage conducting clinical studies to investigate its impact on relevant parameters.
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Affiliation(s)
- Saskia Preissner
- Department of Operative and Preventive Dentistry, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Henrik C Wirtz
- Department of Operative and Preventive Dentistry, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Anne-Kristin Tietz
- Department of Periodontology and Synoptic Dentistry, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Shady Abu-Sirhan
- Department of Operative and Preventive Dentistry, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Sascha R Herbst
- Department of Operative and Preventive Dentistry, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Stefan Hartwig
- Department of Oral and Maxillofacial Surgery/Clinical Navigation, Charité Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Philipp Pierdzioch
- Department of Operative and Preventive Dentistry, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Andrea Maria Schmidt-Westhausen
- Department of Oral Medicine, Dental Radiology and Oral Surgery, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Henrik Dommisch
- Department of Periodontology and Synoptic Dentistry, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany
| | - Moritz Hertel
- Department of Oral Medicine, Dental Radiology and Oral Surgery, Charité Universitätsmedizin Berlin, Aßmannshauser Str. 4-6, 14197, Berlin, Germany.
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35
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Effect of low-pressure air plasma on the microbial load and physicochemical characteristics of dried laver. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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36
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Park JH, Kumar N, Park DH, Yusupov M, Neyts EC, Verlackt CCW, Bogaerts A, Kang MH, Uhm HS, Choi EH, Attri P. A comparative study for the inactivation of multidrug resistance bacteria using dielectric barrier discharge and nano-second pulsed plasma. Sci Rep 2015; 5:13849. [PMID: 26351132 PMCID: PMC4563361 DOI: 10.1038/srep13849] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 08/04/2015] [Indexed: 12/23/2022] Open
Abstract
Bacteria can be inactivated through various physical and chemical means, and these have always been the focus of extensive research. To further improve the methodology for these ends, two types of plasma systems were investigated: nano-second pulsed plasma (NPP) as liquid discharge plasma and an Argon gas-feeding dielectric barrier discharge (Ar-DBD) as a form of surface plasma. To understand the sterilizing action of these two different plasma sources, we performed experiments with Staphylococcus aureus (S. aureus) bacteria (wild type) and multidrug resistant bacteria (Penicillum-resistant, Methicillin-resistant and Gentamicin-resistant). We observed that both plasma sources can inactivate both the wild type and multidrug-resistant bacteria to a good extent. Moreover, we observed a change in the surface morphology, gene expression and β-lactamase activity. Furthermore, we used X-ray photoelectron spectroscopy to investigate the variation in functional groups (C-H/C-C, C-OH and C=O) of the peptidoglycan (PG) resulting from exposure to plasma species. To obtain atomic scale insight in the plasma-cell interactions and support our experimental observations, we have performed molecular dynamics simulations to study the effects of plasma species, such as OH, H2O2, O, O3, as well as O2 and H2O, on the dissociation/formation of above mentioned functional groups in PG.
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Affiliation(s)
- Ji Hoon Park
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea 139-701
| | - Naresh Kumar
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea 139-701
| | - Dae Hoon Park
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea 139-701
| | - Maksudbek Yusupov
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Erik C Neyts
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Christof C W Verlackt
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Annemie Bogaerts
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Min Ho Kang
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea 139-701
| | - Han Sup Uhm
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea 139-701
| | - Eun Ha Choi
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea 139-701
| | - Pankaj Attri
- Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea 139-701
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37
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Kim JW, Puligundla P, Mok C. Microbial decontamination of dried laver using corona discharge plasma jet (CDPJ). J FOOD ENG 2015. [DOI: 10.1016/j.jfoodeng.2015.03.034] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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Kim JW, Puligundla P, Mok C. Dielectric barrier discharge plasma for microbial decontamination of dried laver: effects on physicochemical characteristics. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12933] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Je-Wook Kim
- Department of Food Science and Biotechnology; Gachon University; Seongnam 461-701 Korea
| | - Pradeep Puligundla
- Department of Food Science and Biotechnology; Gachon University; Seongnam 461-701 Korea
| | - Chulkyoon Mok
- Department of Food Science and Biotechnology; Gachon University; Seongnam 461-701 Korea
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39
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Ma F, Rehman A, Sims M, Zeng X. Antimicrobial Susceptibility Assays Based on the Quantification of Bacterial Lipopolysaccharides via a Label Free Lectin Biosensor. Anal Chem 2015; 87:4385-93. [DOI: 10.1021/acs.analchem.5b00165] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Fen Ma
- Department
of Chemistry, Oakland University, Rochester, Michigan 48309, United States
| | - Abdul Rehman
- Department
of Chemistry, Oakland University, Rochester, Michigan 48309, United States
| | - Matthew Sims
- William Beaumont Hospital, Royal Oak, Michigan 48073, United States
- William
Beaumont School of Medicine, Oakland University, Rochester, Michigan 48309, United States
| | - Xiangqun Zeng
- Department
of Chemistry, Oakland University, Rochester, Michigan 48309, United States
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40
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Mok C, Lee T, Puligundla P. Afterglow corona discharge air plasma (ACDAP) for inactivation of common food-borne pathogens. Food Res Int 2015. [DOI: 10.1016/j.foodres.2014.11.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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41
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Kim HJ, Yong HI, Park S, Kim K, Choe W, Jo C. Microbial safety and quality attributes of milk following treatment with atmospheric pressure encapsulated dielectric barrier discharge plasma. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.07.053] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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42
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Park SY, Ha SD. Application of cold oxygen plasma for the reduction ofCladosporium cladosporioidesandPenicillium citrinumon the surface of dried filefish (Stephanolepis cirrhifer) fillets. Int J Food Sci Technol 2014. [DOI: 10.1111/ijfs.12730] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shin Young Park
- School of Food Science and Technology; Chung-Ang University; 72-1 Nae-Ri Daeduck-Myun Ansung Kyunggido 456-756 Korea
| | - Sang-Do Ha
- School of Food Science and Technology; Chung-Ang University; 72-1 Nae-Ri Daeduck-Myun Ansung Kyunggido 456-756 Korea
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43
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Schnabel U, Niquet R, Schlüter O, Gniffke H, Ehlbeck J. Decontamination and Sensory Properties of Microbiologically Contaminated Fresh Fruits and Vegetables by Microwave Plasma Processed Air (PPA). J FOOD PROCESS PRES 2014. [DOI: 10.1111/jfpp.12273] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Uta Schnabel
- Leibniz Institute for Plasma Science and Technology; Felix-Hausdorff-Straße 2 17489 Greifswald Germany
| | - Rijana Niquet
- Leibniz Institute for Plasma Science and Technology; Felix-Hausdorff-Straße 2 17489 Greifswald Germany
| | - Oliver Schlüter
- Leibniz Institute for Agricultural Engineering Potsdam-Bornim; Max-Eyth-Allee 100 14469 Potsdam Germany
| | - Holger Gniffke
- neu.zlt - Zentrum für Lebensmitteltechnologie Mecklenburg-Vorpommern GmbH; Seestraße 7 17033 Neubrandenburg Germany
| | - Jörg Ehlbeck
- Leibniz Institute for Plasma Science and Technology; Felix-Hausdorff-Straße 2 17489 Greifswald Germany
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44
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Abstract
This review describes the contemporary aspects of plasma application in dentistry. Previous studies on plasma applications were classified into two categories, surface treatment and direct applications, and were reviewed, respectively according to the approach. The current review discussed modification of dental implant surface, enhancing of adhesive qualities, enhancing of polymerization, surface coating and plasma cleaning under the topics of surface treatment. Microbicidal activities, decontamination, root canal disinfection and tooth bleaching were reviewed as direct applications with other miscellaneous ones. Non-thermal atmospheric pressure plasma was of particular focus since it is gaining considerable attention due to the possibility for its use in living tissues. Future perspectives have also been discussed briefly. Although it is still not popular among dentists, plasma has shown promises in several areas of dentistry and is now opening a new era of plasma dentistry.
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45
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Sterilization of bacteria suspensions and identification of radicals deposited during plasma treatment. OPEN CHEM 2014. [DOI: 10.1515/chem-2015-0041] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractIn this paper we will present results for plasma sterilization of planktonic samples of two reference strains of bacteria, Pseudomonas aeruginosa ATCC 27853 and Enterococcus faecalis ATCC 29212. We have used a plasma needle as a source of non-equilibrium atmospheric plasma in all treatments. This device is already well characterized by OES, derivative probes and mass spectrometry. It was shown that power delivered to the plasma is bellow 2 W and that it produces the main radical oxygen and nitrogen species believed to be responsible for the sterilization process. Here we will only present results obtained by electron paramagnetic resonance which was used to detect the OH, H and NO species. Treatment time and power delivered to the plasma were found to have the strongest influence on sterilization. In all cases we have observed a reduction of several orders of magnitude in the concentration of bacteria and for the longest treatment time complete eradication. A more efficient sterilization was achieved in the case of gram negative bacteria.
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46
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Bermúdez-Aguirre D, Wemlinger E, Pedrow P, Barbosa-Cánovas G, Garcia-Perez M. Effect of atmospheric pressure cold plasma (APCP) on the inactivation of Escherichia coli in fresh produce. Food Control 2013. [DOI: 10.1016/j.foodcont.2013.04.022] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tai K, Houlahan TJ, Eden JG, Dillon SJ. Integration of microplasma with transmission electron microscopy: Real-time observation of gold sputtering and island formation. Sci Rep 2013; 3:1325. [PMID: 23429577 PMCID: PMC3579186 DOI: 10.1038/srep01325] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Accepted: 01/18/2013] [Indexed: 11/16/2022] Open
Abstract
An in situ platform for characterizing plasma-materials interactions at the nanoscale in the transmission electron microscope (TEM) has been demonstrated. Integrating a DC microplasma device, having plane-parallel electrodes with a 25 nm thick Au film on both the cathode and anode and operating in 760 Torr of Ar, within a TEM provides real-time observation of Au sputtering and island formation with a spatial resolution of < 100 nm. Analyses of TEM and atomic force microscopy images show the growth of Au islands to proceed by a Stranski-Krastanov process at a rate that varies linearly with the discharge power and is approximately a factor of 3 larger than the predictions of a DC plasma sputtering model. The experiments reported here extend in situ TEM diagnostics to plasma-solid and plasma-liquid interactions.
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Affiliation(s)
- K Tai
- Department of Materials Science and Engineering, University of Illinois, Urbana, IL 61801, USA.
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Gorynia S, Koban I, Matthes R, Welk A, Gorynia S, Hübner NO, Kocher T, Kramer A. In vitro efficacy of cold atmospheric pressure plasma on S. sanguinis biofilms in comparison of two test models. GMS HYGIENE AND INFECTION CONTROL 2013; 8:Doc01. [PMID: 23967387 PMCID: PMC3746598 DOI: 10.3205/dgkh000201] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dental plaque critically affects the etiology of caries, periodontitis and periimplantitis. The mechanical removal of plaque can only be performed partially due to limited accessibility. Therefore, plaque still represents one of the major therapeutic challenges. Even though antiseptic mouth rinses reduce the extent of biofilm temporarily, plaque removal remains incomplete and continuous usage can even result in side effects. Here we tested argon plasma produced by kinpen09 as one option to inactivate microorganisms and to eliminate plaque. S. sanguinis biofilms cultivated in either the European Biofilm Reactor (EUREBI) or in 24 well plates were treated with argon plasma. In both test systems a homogeneous, good analyzable and stable biofilm was produced on the surface of titan plates within 72 h (>6,9 log10 CFU/ml). Despite the significantly more powerful biofilm production in EUREBI, the difference of 0.4 log10 CFU/ml between EUREBI and the 24 well plates was practically not relevant. For that reason both test models were equally qualified for the analysis of efficacy of cold atmospheric pressure plasma. We demonstrate a significant reduction of the biofilm compared to the control in both test models. After plasma application of 180 s the biofilm produced in EUREBI or in 24 well plates was decreased by 0.6 log10 CFU/ml or 0.5 log10 CFU/ml, respectively. In comparison to recently published studies analyzing the efficacy of kinpen09, S. sanguinis produces a hardly removable biofilm. Future investigations using reduced distances between plasma source and biofilm, various compositions of plasma and alternative plasma sources will contribute to further optimization of the efficacy against S. sanguinis biofilms.
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Affiliation(s)
- Susanne Gorynia
- Institute of Hygiene and Environmental Medicine, University Medicine Greifswald, Ernst-Moritz-Arndt University, Greifswald, Germany
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Schaudinn C, Jaramillo D, Freire MO, Sedghizadeh PP, Nguyen A, Webster P, Costerton JW, Jiang C. Evaluation of a nonthermal plasma needle to eliminate ex vivo biofilms in root canals of extracted human teeth. Int Endod J 2013; 46:930-7. [PMID: 23480318 DOI: 10.1111/iej.12083] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2012] [Accepted: 02/02/2013] [Indexed: 01/16/2023]
Abstract
AIM To evaluate the efficacy of a nonthermal plasma (NTP) at atmospheric pressure on ex vivo biofilm in root canals of extracted teeth. METHODOLOGY Intracanal contents from three teeth with root canal infections were collected, pooled and grown in thirty-five microCT-mapped root canals of extracted and instrumented human teeth. One group of teeth was treated with NTP, another with 6% NaOCl and one set was left untreated. The intracanal contents from twenty-seven teeth (nine teeth in each group) were plated on agar and colony forming units were determined. Parametric test of one-way analysis of variance (anova) was used to analyse statistical significance. The remaining teeth were cut open, stained with LIVE/DEAD(®) and examined with confocal laser scanning microscopy. RESULTS The untreated root canals were covered with biofilm of varying thickness. Treatment with nonthermal plasma decreased the number of viable bacteria in biofilms by one order of magnitude, whilst the NaOCl control achieved a reduction of more than four magnitudes. Both the NTP and the NaOCl treatment results were significantly different from the negative control (P < 0.05). CONCLUSION The nonthermal plasma displayed antimicrobial activity against endodontic biofilms in root canals, but was not as effective as the use of 6% NaOCl.
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Affiliation(s)
- C Schaudinn
- Robert Koch Institute, Berlin, Germany; House Research Institute, Los Angeles, CA, USA
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Fernández A, Noriega E, Thompson A. Inactivation of Salmonella enterica serovar Typhimurium on fresh produce by cold atmospheric gas plasma technology. Food Microbiol 2013; 33:24-9. [PMID: 23122497 DOI: 10.1016/j.fm.2012.08.007] [Citation(s) in RCA: 207] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Revised: 08/10/2012] [Accepted: 08/14/2012] [Indexed: 11/29/2022]
Abstract
Cold atmospheric gas plasma treatment (CAP) is an alternative approach for the decontamination of fresh and minimally processed food. In this study, the effects of growth phase, growth temperature and chemical treatment regime on the inactivation of Salmonella enterica serovar Typhimurium (S. Typhimurium) by Nitrogen CAP were examined. Furthermore, the efficacy of CAP treatment for decontaminating lettuce and strawberry surfaces and potato tissue inoculated with S. Typhimurium was evaluated. It was found that the rate of inactivation of S. Typhimurium was independent of the growth phase, growth temperature and chemical treatment regime. Under optimal conditions, a 2 min treatment resulted in a 2.71 log-reduction of S. Typhimurium viability on membrane filters whereas a 15 min treatment was necessary to achieve 2.72, 1.76 and 0.94 log-reductions of viability on lettuce, strawberry and potato, respectively. We suggest that the differing efficiency of CAP treatment on the inactivation of S. Typhimurium on these different types of fresh foods is a consequence of their surface features. Scanning electron microscopy of the surface structures of contaminated samples of lettuce, strawberry and potato revealed topographical features whereby S. Typhimurium cells could be protected from the active species generated by plasma.
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Affiliation(s)
- A Fernández
- Institute of Food Research, Norwich Research Park, Norwich NR4 7UA, UK
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