1
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Wang Y, Liu Y, Zhao Y, Sun Y, Duan M, Wang H, Dai R, Liu Y, Li X, Jia F. Bactericidal efficacy difference between air and nitrogen cold atmospheric plasma on Bacillus cereus: Inactivation mechanism of Gram-positive bacteria at the cellular and molecular level. Food Res Int 2023; 173:113204. [PMID: 37803533 DOI: 10.1016/j.foodres.2023.113204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/19/2023] [Accepted: 06/27/2023] [Indexed: 10/08/2023]
Abstract
As an emerging food processing technology, cold atmospheric plasma (CAP) has attracted great attention in the field of microbial inactivation. Although CAP has been proven to effectively inactivate a variety of foodborne pathogens, there is less research on the inactivation of Bacillus cereus, and the exact inactivation mechanism is still unclear. Elucidating the inactivation mechanism will help to develop and optimize this sterilization method, with the prospective application in industrialized food production. This study aims to explore the bactericidal efficacy difference between air and nitrogen CAP on B. cereus, a typical Gram-positive bacterium, and reveals the inactivation mechanism of CAP at the cellular and molecular level, by observing the change of the cell membrane, cell morphological damage, intracellular antioxidant enzyme activity and cellular biomacromolecules changes. The results showed that both air CAP and nitrogen CAP could effectively inactivate B. cereus, which was due to the reactive oxygen and nitrogen species (RONS) generated by the plasma causing bacterial death. The damage pathways of CAP on Gram-positive bacteria could be explained by disrupting the bacterial cell membrane and cell morphology, disturbing the intracellular redox homeostasis, and destroying biomacromolecules in the cells. The differences in active species generated by the plasma were the main reason for the different bactericidal efficiencies of air CAP and nitrogen CAP, where air CAP producing RONS with stronger oxidative capacity in a shorter time. This study indicates that air CAP is an effective, inexpensive and green technology for B. cereus inactivation, providing a basis for industrial application in food processing.
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Affiliation(s)
- Yuhan Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yana Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yijie Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yingying Sun
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Miaolin Duan
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Han Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Ruitong Dai
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yi Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xingmin Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
| | - Fei Jia
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
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2
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Dirks T, Krewing M, Vogel K, Bandow JE. The cold atmospheric pressure plasma-generated species superoxide, singlet oxygen and atomic oxygen activate the molecular chaperone Hsp33. J R Soc Interface 2023; 20:20230300. [PMID: 37876273 PMCID: PMC10598452 DOI: 10.1098/rsif.2023.0300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 09/26/2023] [Indexed: 10/26/2023] Open
Abstract
Cold atmospheric pressure plasmas are used for surface decontamination or disinfection, e.g. in clinical settings. Protein aggregation has been shown to significantly contribute to the antibacterial mechanisms of plasma. To investigate the potential role of the redox-activated zinc-binding chaperone Hsp33 in preventing protein aggregation and thus mediating plasma resistance, we compared the plasma sensitivity of wild-type E. coli to that of an hslO deletion mutant lacking Hsp33 as well as an over-producing strain. Over-production of Hsp33 increased plasma survival rates above wild-type levels. Hsp33 was previously shown to be activated by plasma in vitro. For the PlasmaDerm source applied in dermatology, reversible activation of Hsp33 was confirmed. Thiol oxidation and Hsp33 unfolding, both crucial for Hsp33 activation, occurred during plasma treatment. After prolonged plasma exposure, however, unspecific protein oxidation was detected, the ability of Hsp33 to bind zinc ions was decreased without direct modifications of the zinc-binding motif, and the protein was inactivated. To identify chemical species of potential relevance for plasma-induced Hsp33 activation, reactive oxygen species were tested for their ability to activate Hsp33 in vitro. Superoxide, singlet oxygen and potentially atomic oxygen activate Hsp33, while no evidence was found for activation by ozone, peroxynitrite or hydroxyl radicals.
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Affiliation(s)
- Tim Dirks
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Marco Krewing
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Katharina Vogel
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Julia E. Bandow
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
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3
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Zhang H, Zhang C, Han Q. Mechanisms of bacterial inhibition and tolerance around cold atmospheric plasma. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12618-w. [PMID: 37421472 PMCID: PMC10390405 DOI: 10.1007/s00253-023-12618-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 05/29/2023] [Accepted: 06/01/2023] [Indexed: 07/10/2023]
Abstract
The grim situation of bacterial infection has undoubtedly become a major threat to human health. In the context of frequent use of antibiotics, a new bactericidal method is urgently needed to fight against drug-resistant bacteria caused by non-standard use of antibiotics. Cold atmospheric plasma (CAP) is composed of a variety of bactericidal species, which has excellent bactericidal effect on microbes. However, the mechanism of interaction between CAP and bacteria is not completely clear. In this paper, we summarize the mechanisms of bacterial killing by CAP in a systematic manner, discuss the responses of bacteria to CAP treatment that are considered to be related to tolerance and their underlying mechanisms, review the recent advances in bactericidal applications of CAP finally. This review indicates that CAP inhibition and tolerance of survival bacteria are a set of closely related mechanisms and suggests that there might be other mechanisms of tolerance to survival bacteria that had not been discovered yet. In conclusion, this review shows that CAP has complex and diverse bactericidal mechanisms, and has excellent bactericidal effect on bacteria at appropriate doses. KEY POINTS: • The bactericidal mechanism of CAP is complex and diverse. • There are few resistant bacteria but tolerant bacteria during CAP treatment. • There is excellent germicidal effect when CAP in combination with other disinfectants.
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Affiliation(s)
- Hao Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Chengxi Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Qi Han
- Department of Oral Pathology, State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
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4
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Kwiatkowski M, Terebun P, Kučerová K, Tarabová B, Kovalová Z, Lavrikova A, Machala Z, Hensel K, Pawłat J. Evaluation of Selected Properties of Dielectric Barrier Discharge Plasma Jet. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1167. [PMID: 36770174 PMCID: PMC9918978 DOI: 10.3390/ma16031167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/23/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
In the technological processes requiring mild treatment, such as soft materials processing or medical applications, an important role is played by non-equilibrium plasma reactors with dielectric barrier discharge (DBD), that when generated in noble gases allows for the effective treatment of biological material at a low temperature. The aim of this study is to determine the operating parameters of an atmospheric pressure, radio-frequency DBD plasma jet reactor for the precise treatment of biological materials. The tested parameters were the shape of the discharge (its length and volume), current and voltage signals, as well as the power consumed by the reactor for various composition and flow rates of the working gas. To determine the applicability in medicine, the temperature, pH, concentrations of H2O2, NO2- and NO3- and Escherichia coli log reduction in the plasma treated liquids were determined. The obtained results show that for certain operating parameters, a narrow shape of plasma stream can generate significant amounts of H2O2, allowing for the mild decontamination of bacteria at a relatively low power of the system, safe for the treatment of biological materials.
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Affiliation(s)
- Michał Kwiatkowski
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
| | - Piotr Terebun
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
| | - Katarína Kučerová
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Barbora Tarabová
- Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, 182 00 Prague, Czech Republic
| | - Zuzana Kovalová
- Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, 182 00 Prague, Czech Republic
| | - Aleksandra Lavrikova
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Zdenko Machala
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Karol Hensel
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Joanna Pawłat
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
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5
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Bactericidal effects of low-temperature atmospheric-pressure air plasma jets with no damage to plant nutrient solutions. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Fallon M, Kennedy S, Daniels S, Humphreys H. Technologies to decontaminate bacterial biofilm on hospital surfaces: a potential new role for cold plasma? J Med Microbiol 2022; 71. [PMID: 36201343 DOI: 10.1099/jmm.0.001582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022] Open
Abstract
Healthcare-associated infections (HCAIs) are a major challenge and the near patient surface is important in harbouring causes such as methicillin-resistant Staphylococcus aureus (MRSA) and Clostridioides difficile. Current approaches to decontamination are sub-optimal and many studies have demonstrated that microbial causes of HCAIs may persist with onward transmission. This may be due to the capacity of these microbes to survive in biofilms on surfaces. New technologies to enhance hospital decontamination may have a role in addressing this challenge. We have reviewed current technologies such as UV light and hydrogen peroxide and also assessed the potential use of cold atmospheric pressure plasma (CAPP) in surface decontamination. The antimicrobial mechanisms of CAPP are not fully understood but the production of reactive oxygen and other species is believed to be important. CAPP systems have been shown to partially or completely remove a variety of biofilms including those caused by Candida albicans, and multi-drug-resistant bacteria such as MRSA. There are some studies that suggest promise for CAPP in the challenge of surface decontamination in the healthcare setting. However, further work is required to define better the mechanism of action. We need to know what surfaces are most amenable to treatment, how microbial components and the maturity of biofilms may affect successful treatment, and how would CAPP be used in the clinical setting.
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Affiliation(s)
- Muireann Fallon
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Sarah Kennedy
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland
| | - Stephen Daniels
- National Centre for Plasma Science and Technology, Dublin City University, Dublin, Ireland
| | - Hilary Humphreys
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland, Education and Research Centre, Beaumont Hospital, Dublin, Ireland.,Department of Microbiology, Beaumont Hospital, Dublin, Ireland
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7
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Zhai SY, Kong MG, Xia YM. Cold Atmospheric Plasma Ameliorates Skin Diseases Involving Reactive Oxygen/Nitrogen Species-Mediated Functions. Front Immunol 2022; 13:868386. [PMID: 35720416 PMCID: PMC9204314 DOI: 10.3389/fimmu.2022.868386] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022] Open
Abstract
Skin diseases are mainly divided into infectious diseases, non-infectious inflammatory diseases, cancers, and wounds. The pathogenesis might include microbial infections, autoimmune responses, aberrant cellular proliferation or differentiation, and the overproduction of inflammatory factors. The traditional therapies for skin diseases, such as oral or topical drugs, have still been unsatisfactory, partly due to systematic side effects and reappearance. Cold atmospheric plasma (CAP), as an innovative and non-invasive therapeutic approach, has demonstrated its safe and effective functions in dermatology. With its generation of reactive oxygen species and reactive nitrogen species, CAP exhibits significant efficacies in inhibiting bacterial, viral, and fungal infections, facilitating wound healing, restraining the proliferation of cancers, and ameliorating psoriatic or vitiligous lesions. This review summarizes recent advances in CAP therapies for various skin diseases and implicates future strategies for increasing effectiveness or broadening clinical indications.
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Affiliation(s)
- Si-yue Zhai
- Department of Dermatology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- Center of Plasma Biomedicine, State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, China
| | - Michael G. Kong
- Center of Plasma Biomedicine, State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, China
- School of Electrical Engineering, Xi’an Jiaotong University, Xi’an, China
| | - Yu-min Xia
- Department of Dermatology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
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8
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Effect of the Application of Cold Plasma Energy on the Inactivation of Microorganisms, Proteins, and Lipids Deterioration in Adobera Cheese. J FOOD QUALITY 2022. [DOI: 10.1155/2022/8230955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cheeses are perishable foods that must fulfill sanitary and quality requirements according to the parameters established globally. Plasma as a nonthermal inactivation technique has been a current research topic for food preservation, so the objective of this work was to study the effect of plasma energy against microorganisms in Adobera cheese (traditional Mexican cheese) as well as evaluate the possible degradation of lipids and protein. 108 CFU/mL of Escherichia coli ATCC 25922, Salmonella ATCC13076, and Staphylococcus aureus ATCC 6538 were inoculated at 0.5 g of Adobera cheese and were subjected to an energy of 30 volts, in a dielectric barrier discharge reactor (DBDR) at intervals of times 1, 3, 5, 7, 10, and 15 min. A flow of a mixture of air and helium at 96% purity was used. The decimal reduction time (D) was determined, and the oxidation of proteins and lipids was analyzed after each treatment. The results showed an annihilating effect of plasma on the indicator bacteria under study, and a reduction of 5 logarithmic cycles was obtained. The maximum degree of lipid oxidation was 23 acid degree values (ADV) after 7 min of exposure to plasma. The oxidation of proteins showed a direct and proportional relationship between the formation of carbonyl groups with the percentage significant loss to the concentration of carbonyl groups with the concentration of protein oxidation, after 3 min of exposure to cold plasma levels of 82% and 99% oxidation of Adobera cheese protein and free casein, respectively. We conclude that the plasma energy applied to Adobera cheese is an effective treatment to inactivate bacteria. However, there is the possibility of causing changes in taste and odor, due to the release of fatty acids and the oxidation of proteins.
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9
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Lv X, Cheng JH. Evaluation of the Effects of Cold Plasma on Cell Membrane Lipids and Oxidative Injury of Salmonella typhimurium. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27030640. [PMID: 35163904 PMCID: PMC8838372 DOI: 10.3390/molecules27030640] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/06/2022] [Accepted: 01/18/2022] [Indexed: 11/16/2022]
Abstract
Salmonella typhimurium (S. typhimurium) is a major causative agent of foodborne illness worldwide. Cold plasma (CP) was used to inactivate S. typhimurium and to investigate the effect of CP on cell membrane lipids and oxidative injury of cells. Results indicated that the inactivation effect of CP on S. typhimurium was positively correlated with the treatment time and voltage. S. typhimurium was undetectable (total number of surviving colonies <2 log CFU/mL) after 5 min treatment with the voltage of 50 V. CP treatment caused damage to the cell membrane of S. typhimurium and the leakage of cell contents, and the relative content of unsaturated fatty acids in cell membrane decreased. Cell membrane lipids were oxidized; the malondialdehyde content increased from 0.219 nmol/mL to 0.658 nmol/mL; the catalase activity of S. typhimurium solution increased from 751 U/mL to 2542 U/mL; and the total superoxide dismutase activity increased from 3.076 U/mL to 4.54 U/mL, which confirmed the oxidative damage in S. typhimurium cell membrane caused by CP treatment. It was demonstrated that the potential application of plasma-mediated reactive oxygen species is suitable for destroying the structures of the cell membrane and ensuring the microbial safety of fresh food samples.
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Affiliation(s)
- Xiaoye Lv
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China;
- Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
| | - Jun-Hu Cheng
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China;
- Academy of Contemporary Food Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
- Correspondence:
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10
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Salgado BAB, Fabbri S, Dickenson A, Hasan MI, Walsh JL. Surface barrier discharges for Escherichia coli biofilm inactivation: Modes of action and the importance of UV radiation. PLoS One 2021; 16:e0247589. [PMID: 33730103 PMCID: PMC7968650 DOI: 10.1371/journal.pone.0247589] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/10/2021] [Indexed: 11/18/2022] Open
Abstract
Cold plasma generated in air at atmospheric pressure is an extremely effective antimicrobial agent, with proven efficacy against clinically relevant bacterial biofilms. The specific mode of bacterial inactivation is highly dependent upon the configuration of the plasma source used. In this study, the mode of microbial inactivation of a surface barrier discharge was investigated against Escherichia coli biofilms grown on polypropylene coupons. Different modes of exposure were considered and it was demonstrated that the long-lived reactive species created by the plasma are not solely responsible for the observed microbial inactivation. It was observed that a synergistic interaction occurs between the plasma generated long-lived reactive species and ultraviolet (UV) photons, acting to increase the antimicrobial efficacy of the approach by an order of magnitude. It is suggested that plasma generated UV is an important component for microbial inactivation when using a surface barrier discharge; however, it is not through the conventional pathway of direct DNA damage, rather through the synergistic interaction between liquid in the biofilm matrix and long-lived chemical species created by the discharge.
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Affiliation(s)
- Breno A. B. Salgado
- Centre for Plasma Microbiology, Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, United Kingdom
| | - Stefania Fabbri
- Centre for Plasma Microbiology, Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, United Kingdom
| | - Aaron Dickenson
- Centre for Plasma Microbiology, Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, United Kingdom
| | - Mohammad I. Hasan
- Centre for Plasma Microbiology, Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, United Kingdom
| | - James L. Walsh
- Centre for Plasma Microbiology, Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, United Kingdom
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11
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Liu D, Huang Q, Gu W, Zeng XA. A review of bacterial biofilm control by physical strategies. Crit Rev Food Sci Nutr 2021; 62:3453-3470. [PMID: 33393810 DOI: 10.1080/10408398.2020.1865872] [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] [Indexed: 10/22/2022]
Abstract
Biofilms are multicellular communities of microorganisms held together by a self-produced extracellular matrix, which contribute to hygiene problems in the food and medical fields. Both spoilage and pathogenic bacteria that grow in the complex structure of biofilm are more resistant to harsh environmental conditions and conventional antimicrobial agents. Therefore, it is important to develop eco-friendly preventive methodologies to eliminate biofilms from foods and food contact equipment. The present paper gives an overview of the current physical methods for biofilm control and removal. Current physical strategies adopted for the anti-biofilm treatment mainly focused on use of ultrasound power, electric or magnetic field, plasma, and irradiation. Furthermore, the mechanisms of anti-biofilm action and application of different physical methods are discussed. Physical strategies make it possible to combat biofilm without the use of biocidal agents. The remarkable microbiocidal properties of physical strategies are promising tools for antimicrobial applications.
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Affiliation(s)
- Dan Liu
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, PR China
| | - Quanfeng Huang
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, PR China
| | - Weiming Gu
- Faculty of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, PR China
| | - Xin-An Zeng
- School of Food Science & Engineering, South China University of Technology, Guangzhou, Guangdong, PR China
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12
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Ranjbar S, Shahmansouri M, Attri P, Bogaerts A. Effect of plasma-induced oxidative stress on the glycolysis pathway of Escherichia coli. Comput Biol Med 2020; 127:104064. [PMID: 33171288 DOI: 10.1016/j.compbiomed.2020.104064] [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: 06/21/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 01/01/2023]
Abstract
Antibiotic resistance is one of the world's most urgent public health problems. Due to its antibacterial properties, cold atmospheric plasma (CAP) may serve as an alternative method to antibiotics. It is claimed that oxidative stress caused by CAP is the main reason of bacteria inactivation. In this work, we computationally investigated the effect of plasma-induced oxidation on various glycolysis metabolites, by monitoring the production of the biomass. We observed that in addition to the significant reduction in biomass production, the rate of some reactions has increased. These reactions produce anti-oxidant products, showing the bacterial defense mechanism to escape the oxidative damage. Nevertheless, the simulations show that the plasma-induced oxidation effect is much stronger than the defense mechanism, causing killing of the bacteria.
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Affiliation(s)
- S Ranjbar
- Department of Physics, Faculty of Science, Arak University, Arak, 38156-8-8349, Iran; Research Group PLASMANT, University of Antwerp, Department of Chemistry, Universiteitsplein 1, Wilrijk-Antwerp, B-2610, Belgium.
| | - M Shahmansouri
- Department of Physics, Faculty of Science, Arak University, Arak, 38156-8-8349, Iran
| | - P Attri
- Research Group PLASMANT, University of Antwerp, Department of Chemistry, Universiteitsplein 1, Wilrijk-Antwerp, B-2610, Belgium; Center of Plasma Nano-interface Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - A Bogaerts
- Research Group PLASMANT, University of Antwerp, Department of Chemistry, Universiteitsplein 1, Wilrijk-Antwerp, B-2610, Belgium
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13
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Zhao YM, Patange A, Sun DW, Tiwari B. Plasma-activated water: Physicochemical properties, microbial inactivation mechanisms, factors influencing antimicrobial effectiveness, and applications in the food industry. Compr Rev Food Sci Food Saf 2020; 19:3951-3979. [PMID: 33337045 DOI: 10.1111/1541-4337.12644] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/20/2020] [Accepted: 09/16/2020] [Indexed: 12/19/2022]
Abstract
Novel nonthermal inactivation technologies have been increasingly popular over the traditional thermal food processing methods due to their capacity in maintaining microbial safety and other quality parameters. Plasma-activated water (PAW) is a cutting-edge technology developed around a decade ago, and it has attracted considerable attention as a potential washing disinfectant. This review aims to offer an overview of the fundamentals and potential applications of PAW in the agri-food sector. A detailed description of the interactions between plasma and water can help to have a better understanding of PAW, hence the physicochemical properties of PAW are discussed. Further, this review elucidates the complex inactivation mechanisms of PAW, including oxidative stress and physical effect. In particular, the influencing factors on inactivation efficacy of PAW, including processing factors, characteristics of microorganisms, and background environment of water are extensively described. Finally, the potential applications of PAW in the food industry, such as surface decontamination for various food products, including fruits and vegetables, meat and seafood, and also the treatment on quality parameters are presented. Apart from decontamination, the applications of PAW for seed germination and plant growth, as well as meat curing are also summarized. In the end, the challenges and limitations of PAW for scale-up implementation, and future research efforts are also discussed. This review demonstrates that PAW has the potential to be successfully used in the food industry.
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Affiliation(s)
- Yi-Ming Zhao
- Food Refrigeration and Computerised Food Technology (FRCFT), School of Biosystems and Food Engineering, University College Dublin, National University of Ireland, Belfield, Dublin, Ireland.,Food Chemistry and Technology Department, Teagasc Food Research Centre Ashtown, Dublin, Ireland
| | - Apurva Patange
- Food Chemistry and Technology Department, Teagasc Food Research Centre Ashtown, Dublin, Ireland
| | - Da-Wen Sun
- Food Refrigeration and Computerised Food Technology (FRCFT), School of Biosystems and Food Engineering, University College Dublin, National University of Ireland, Belfield, Dublin, Ireland
| | - Brijesh Tiwari
- Food Chemistry and Technology Department, Teagasc Food Research Centre Ashtown, Dublin, Ireland
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14
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Cheng JH, Lv X, Pan Y, Sun DW. Foodborne bacterial stress responses to exogenous reactive oxygen species (ROS) induced by cold plasma treatments. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.07.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Yadav B, Spinelli AC, Misra NN, Tsui YY, McMullen LM, Roopesh MS. Effect of in-package atmospheric cold plasma discharge on microbial safety and quality of ready-to-eat ham in modified atmospheric packaging during storage. J Food Sci 2020; 85:1203-1212. [PMID: 32118300 DOI: 10.1111/1750-3841.15072] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/09/2020] [Accepted: 01/18/2020] [Indexed: 12/22/2022]
Abstract
Listeria monocytogenes is often responsible for postprocessing contamination of ready-to-eat (RTE) products including cooked ham. As an emerging technology, atmospheric cold plasma (ACP) has the potential to inactivate L. monocytogenes in packaged RTE meats. The objectives of this study were to evaluate the effect of treatment time, modified atmosphere gas compositions (MAP), ham formulation, and post-treatment storage (1 and 7 days at 4 °C) on the reduction of a five-strain cocktail of L. monocytogenes and quality changes in ham subjected to in-package ACP treatment. Initial average cells population on ham surfaces were 8 log CFU/cm2 . The ACP treatment time and gas composition significantly (P < 0.05) influenced the inactivation of L. monocytogenes, irrespective of ham formulations. When MAP1 (20% O2 + 40% CO2 + 40% N2 ) was used, there was a significantly higher log reduction (>2 log reduction) in L. monocytogenes on ham in comparison to MAP2 (50% CO2 + 50% N2 ) and MAP3 (100% CO2 ), irrespective of ham formulation. Addition of preservatives (that is, 0.1% sodium diacetate and 1.4% sodium lactate) or bacteriocins (that is, 0.05% of a partially purified culture ferment from Carnobacterium maltaromaticum UAL 307) did not significantly reduce cell counts of L. monocytogenes after ACP treatment. Regardless of type of ham, storage of 24 hr after ACP treatment significantly reduced cells counts of L. monocytogenes to approximately 4 log CFU/cm2 . Following 7 days of storage after ACP treatment, L. monocytogenes counts were below the detection limit (>6 log reduction) when samples were stored in MAP1. However, there were significant changes in lipid oxidation and color after post-treatment storage. In conclusion, the antimicrobial efficacy of ACP is strongly influenced by gas composition inside the package and post-treatment storage. PRACTICAL APPLICATION: Surface contamination of RTE ham with L. monocytogenes may occur during processing steps such as slicing and packaging. In-package ACP is an emerging nonthermal technology, which can be used as a postpackaging decontamination step in industrial settings. This study demonstrated the influence of in-package gas composition, treatment time, post-treatment storage, and ham formulation on L. monocytogenes inactivation efficacy of ACP. Results of present study will be helpful to optimize in-package ACP treatment and storage conditions to reduce L. monocytogenes, while maintaining the quality of ham.
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Affiliation(s)
- Barun Yadav
- Dept. of Agricultural, Food and Nutritional Science, Univ. of Alberta, Edmonton, Alberta, Canada
| | - Ana Claudia Spinelli
- Dept. of Agricultural, Food and Nutritional Science, Univ. of Alberta, Edmonton, Alberta, Canada.,Dept. of Food Science, Univ. of Campinas UNICAMP, Campinas, São Paulo, Brazil
| | - N N Misra
- Dept. of Electrical Engineering, Dalhousie Univ., Halifax, Nova Scotia, Canada.,Ingenium Naturae Pvt. Ltd., Mumbai, India
| | - Ying Y Tsui
- Dept. of Electrical & Computer Engineering, Univ. of Alberta, Edmonton, Alberta, Canada
| | - Lynn M McMullen
- Dept. of Agricultural, Food and Nutritional Science, Univ. of Alberta, Edmonton, Alberta, Canada
| | - M S Roopesh
- Dept. of Agricultural, Food and Nutritional Science, Univ. of Alberta, Edmonton, Alberta, Canada
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16
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Adhikari B, Pangomm K, Veerana M, Mitra S, Park G. Plant Disease Control by Non-Thermal Atmospheric-Pressure Plasma. FRONTIERS IN PLANT SCIENCE 2020; 11:77. [PMID: 32117403 PMCID: PMC7034391 DOI: 10.3389/fpls.2020.00077] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 01/20/2020] [Indexed: 05/28/2023]
Abstract
Disease stresses caused by pathogenic microorganisms are increasing, probably because of global warming. Conventional technologies for plant disease control have often revealed their limitations in efficiency, environmental safety, and economic costs. There is high demand for improvements in efficiency and safety. Non-thermal atmospheric-pressure plasma has demonstrated its potential as an alternative tool for efficient and environmentally safe control of plant pathogenic microorganisms in many studies, which are overviewed in this review. Efficient inactivation of phytopathogenic bacterial and fungal cells by various plasma sources under laboratory conditions has been frequently reported. In addition, plasma-treated water shows antimicrobial activity. Plasma and plasma-treated water exhibit a broad spectrum of efficiency in the decontamination and disinfection of plants, fruits, and seeds, indicating that the outcomes of plasma treatment can be significantly influenced by the microenvironments between plasma and plant tissues, such as the surface structures and properties, antioxidant systems, and surface chemistry of plants. More intense studies are required on the efficiency of decontamination and disinfection and underlying mechanisms. Recently, the induction of plant tolerance or resistance to pathogens by plasma (so-called "plasma vaccination") is emerging as a new area of study, with active research ongoing in this field.
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Affiliation(s)
- Bhawana Adhikari
- Plasma Bioscience Research Center, Kwangwoon University, Seoul, South Korea
| | - Kamonporn Pangomm
- Department of Basic Science, Maejo University Phrae Campus, Phrae, Thailand
| | - Mayura Veerana
- Plasma Bioscience Research Center, Kwangwoon University, Seoul, South Korea
| | - Sarmistha Mitra
- Plasma Bioscience Research Center, Kwangwoon University, Seoul, South Korea
| | - Gyungsoon Park
- Plasma Bioscience Research Center, Kwangwoon University, Seoul, South Korea
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17
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Zhao Y, Ojha S, Burgess CM, Sun D, Tiwari BK. Influence of various fish constituents on inactivation efficacy of plasma‐activated water. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14516] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yi‐Ming Zhao
- Food Refrigeration and Computerised Food Technology (FRCFT) School of Biosystems and Food Engineering University College Dublin National University of Ireland Belfield Dublin 4 Ireland
- Teagasc Food Research Centre Ashtown Dublin 15 Ireland
| | - Shikha Ojha
- Teagasc Food Research Centre Ashtown Dublin 15 Ireland
| | | | - Da‐Wen Sun
- Food Refrigeration and Computerised Food Technology (FRCFT) School of Biosystems and Food Engineering University College Dublin National University of Ireland Belfield Dublin 4 Ireland
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18
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Atmospheric cold plasma inactivation of Escherichia coli and Listeria monocytogenes in tender coconut water: Inoculation and accelerated shelf-life studies. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.06.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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19
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Antibacterial efficacy of cold atmospheric plasma against Enterococcus faecalis planktonic cultures and biofilms in vitro. PLoS One 2019; 14:e0223925. [PMID: 31770390 PMCID: PMC6879142 DOI: 10.1371/journal.pone.0223925] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 10/01/2019] [Indexed: 12/12/2022] Open
Abstract
Nosocomial infections have become a serious threat in our times and are getting more difficult to handle due to increasing development of resistances in bacteria. In this light, cold atmospheric plasma (CAP), which is known to effectively inactivate microorganisms, may be a promising alternative for application in the fields of dentistry and dermatology. CAPs are partly ionised gases, which operate at low temperature and are composed of electrons, ions, excited atoms and molecules, reactive oxygen and nitrogen species. In this study, the effect of CAP generated from ambient air was investigated against Enterococcus faecalis, grown on agar plates or as biofilms cultured for up to 72 h. CAP reduced the colony forming units (CFU) on agar plates by > 7 log10 steps. Treatment of 24 h old biofilms of E. faecalis resulted in CFU-reductions by ≥ 3 log10 steps after CAP treatment for 5 min and by ≥ 5 log10 steps after CAP treatment for 10 min. In biofilm experiments, chlorhexidine (CHX) and UVC radiation served as positive controls and were only slightly more effective than CAP. There was no damage of cytoplasmic membranes upon CAP treatment as shown by spectrometric measurements for release of nucleic acids. Thus, membrane damage seems not to be the primary mechanism of action for CAP towards E. faecalis. Overall, CAP showed pronounced antimicrobial efficacy against E. faecalis on agar plates as well as in biofilms similar to positive controls CHX or UVC.
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20
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Barakat MM, Dallal Bashi YH, Carson L, Graham WG, Gilmore BF, Flynn PB. Atmospheric pressure non-thermal plasma exposure reduces Pseudomonas aeruginosa lipopolysaccharide toxicity in vitro and in vivo. Microb Pathog 2019; 136:103679. [PMID: 31437578 DOI: 10.1016/j.micpath.2019.103679] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/26/2019] [Accepted: 08/19/2019] [Indexed: 12/15/2022]
Abstract
Lipopolysaccharide (LPS) is an endotoxin composed of a polysaccharide and lipid component. It is intrinsically responsible for the pathogenicity of Gram-negative bacteria and is involved in the development of bacterial sepsis. Atmospheric pressure non-thermal plasma is proposed as a potential new approach for the treatment of infected tissue such as chronic wounds, with both antibacterial and wound-healing activities extensively described. Using both the RAW264.7 murine macrophage cell line in vitro assays and the Galleria mellonella insect in vivo toxicity model, the effect non-thermal plasma exposure on LPS-mediated toxicity has been characterised. Short (60 s) non-thermal plasma exposures of Pseudomonas aeruginosa conditioned growth media, membrane lysates and purified P. aeruginosa LPS, resulted in a substantial detoxification and reduction of LPS-induced cytotoxicity in RAW264.7 murine macrophages. Non-thermal plasma exposure (60 s) of purified P. aeruginosa LPS led to a significant (p < 0.05) improvement in the G. mellonella health index (GHI) score, a measure of in vivo toxicity. These findings demonstrate the ability of short plasma exposures to significantly reduce LPS-induced cytotoxicity both in vitro and in vivo; attenuating the toxicity of this important virulence factor intrinsic to the pathogenicity of Gram-negative bacteria.
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Affiliation(s)
- Muna M Barakat
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, BT9 7BL, UK; School of Pharmacy, Applied Sciences Private University, Amman, 11931, Jordan
| | - Yahya H Dallal Bashi
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, BT9 7BL, UK
| | - Louise Carson
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, BT9 7BL, UK
| | - William G Graham
- Centre for Plasma Physics, School of Maths and Physics, Queen's University Belfast, BT7 1NN, UK
| | - Brendan F Gilmore
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, BT9 7BL, UK
| | - Padrig B Flynn
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, BT9 7BL, UK.
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21
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Smet C, Govaert M, Kyrylenko A, Easdani M, Walsh JL, Van Impe JF. Inactivation of Single Strains of Listeria monocytogenes and Salmonella Typhimurium Planktonic Cells Biofilms With Plasma Activated Liquids. Front Microbiol 2019; 10:1539. [PMID: 31333630 PMCID: PMC6621924 DOI: 10.3389/fmicb.2019.01539] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/20/2019] [Indexed: 01/23/2023] Open
Abstract
Recent research has proven the ability of cold atmospheric plasma (CAP) for assuring food safety. A more flexible and transportable alternative is the use of plasma activated liquids (PAL), which are also known to have antimicrobial properties. However, within the context of food safety, little is known on its potential regarding decontamination. This research therefore focusses on identifying the impact of (i) the microbial species and its cell type (planktonic cells or biofilms), (ii) the CAP settings (i.e., gas composition and generation time) and (iii) PAL related factors (treatment time and PAL age) on the technologies efficacy. Cell densities were monitored using the plate counting technique for which the results were analyzed by means of predictive inactivation models. Moreover, the pH and the concentrations of long-lived species (i.e., hydrogen peroxide, nitrite, and nitrate) were measured to characterize the PAL solutions. The results indicated that although the type of pathogen impacted the efficacy of the treatment, mainly the cell mode had an important effect. The presence of oxygen in the operating gas ensured the generation of PAL solutions with a higher antimicrobial activity. Moreover, to ensure a good microbial inactivation, PAL generation times needed to be sufficiently long. Both CAP related factors resulted in a higher amount of long-lived species, enhancing the inactivation. For 30 min. PAL generation using O2, this resulted in log reductions up to 3.9 for biofilms or 5.8 for planktonic cells. However, loss of the PAL activity for stored solutions, together with the frequent appearance of a tailing phase in the inactivation kinetics, hinted at the importance of the short-lived species generated. Different factors, related to (i) the pathogen and its cell mode, (ii) the CAP settings and (iii) PAL related factors, proved to impact the antimicrobial efficacy of the solutions and should be considered with respect to future applications of the PAL technology.
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Affiliation(s)
- Cindy Smet
- Optimization in Engineering Center of Excellence, KU Leuven, Ghent, Belgium
- CPMF, Flemish Cluster Predictive Microbiology in Foods, Ghent, Belgium
- BioTeC+ – Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Ghent, Belgium
| | - Marlies Govaert
- Optimization in Engineering Center of Excellence, KU Leuven, Ghent, Belgium
- CPMF, Flemish Cluster Predictive Microbiology in Foods, Ghent, Belgium
- BioTeC+ – Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Ghent, Belgium
| | - Alina Kyrylenko
- BioTeC+ – Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Ghent, Belgium
| | - Md. Easdani
- BioTeC+ – Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Ghent, Belgium
| | - James L. Walsh
- Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, United Kingdom
| | - Jan F. Van Impe
- Optimization in Engineering Center of Excellence, KU Leuven, Ghent, Belgium
- CPMF, Flemish Cluster Predictive Microbiology in Foods, Ghent, Belgium
- BioTeC+ – Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Ghent, Belgium
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22
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Dong XY, Yang YL. A Novel Approach to Enhance Blueberry Quality During Storage Using Cold Plasma at Atmospheric Air Pressure. FOOD BIOPROCESS TECH 2019. [DOI: 10.1007/s11947-019-02305-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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23
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Ritter AC, Santi L, Vannini L, Beys-da-Silva WO, Gozzi G, Yates J, Ragni L, Brandelli A. Comparative proteomic analysis of foodborne Salmonella Enteritidis SE86 subjected to cold plasma treatment. Food Microbiol 2018; 76:310-318. [DOI: 10.1016/j.fm.2018.06.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 12/24/2022]
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24
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Van Impe J, Smet C, Tiwari B, Greiner R, Ojha S, Stulić V, Vukušić T, Režek Jambrak A. State of the art of nonthermal and thermal processing for inactivation of micro-organisms. J Appl Microbiol 2018; 125:16-35. [DOI: 10.1111/jam.13751] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 02/16/2018] [Accepted: 02/27/2018] [Indexed: 02/03/2023]
Affiliation(s)
- J. Van Impe
- Department of Chemical Engineering; KU Leuven; Leuven Belgium
| | - C. Smet
- Department of Chemical Engineering; KU Leuven; Leuven Belgium
| | - B. Tiwari
- Department of Food Biosciences; Teagasc - Irish Agriculture and Food Development Authority; Carlow Ireland
| | - R. Greiner
- Department of Food Technology and Bioprocess Engineering; Max Rubner-Institut; Karlsruhe Germany
| | - S. Ojha
- Department of Food Biosciences; Teagasc - Irish Agriculture and Food Development Authority; Carlow Ireland
| | - V. Stulić
- Faculty of Food Technology and Biotechnology; University of Zagreb; Zagreb Croatia
| | - T. Vukušić
- Faculty of Food Technology and Biotechnology; University of Zagreb; Zagreb Croatia
| | - A. Režek Jambrak
- Faculty of Food Technology and Biotechnology; University of Zagreb; Zagreb Croatia
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25
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Vijayarangan V, Delalande A, Dozias S, Pouvesle JM, Pichon C, Robert E. Cold Atmospheric Plasma Parameters Investigation for Efficient Drug Delivery in HeLa Cells. IEEE TRANSACTIONS ON RADIATION AND PLASMA MEDICAL SCIENCES 2018. [DOI: 10.1109/trpms.2017.2759322] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Xiang Q, Liu X, Li J, Liu S, Zhang H, Bai Y. Effects of dielectric barrier discharge plasma on the inactivation of Zygosaccharomyces rouxii and quality of apple juice. Food Chem 2018; 254:201-207. [PMID: 29548443 DOI: 10.1016/j.foodchem.2018.02.008] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 01/30/2018] [Accepted: 02/02/2018] [Indexed: 01/05/2023]
Abstract
This work aimed to evaluate the effects of dielectric barrier discharge (DBD) plasma on inactivation of spoilage yeast Zygosaccharomyces rouxii (Z. rouxii), in apple juice. Results showed that DBD plasma treatment at 90 W for 140 s resulted in about 5-log reduction of Z. rouxii in apple juice. The levels of extracellular nucleic acids and proteins as well as contents of H2O2 and NO2- in yeast extract-peptone-dextrose (YPD) medium increased significantly after DBD plasma treatment at 90 W for 40-200 s. The increases in membrane permeability and generation of reactive species would likely contribute to DBD plasma-mediated inactivation of Z. rouxii. DBD plasma caused significant changes in pH, titratable acidity, and certain color parameters of apple juice, but had no effect on the contents of total soluble solids, reducing sugar, and total phenolics. This study provides key implications for the application of DBD plasma in fruit juice processing.
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Affiliation(s)
- Qisen Xiang
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, PR China; Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Food Production and Safety, Zhengzhou 450001, PR China
| | - Xiufang Liu
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, PR China; Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Food Production and Safety, Zhengzhou 450001, PR China
| | - Junguang Li
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, PR China; Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Food Production and Safety, Zhengzhou 450001, PR China
| | - Shengnan Liu
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, PR China; Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Food Production and Safety, Zhengzhou 450001, PR China
| | - Hua Zhang
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, PR China; Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Food Production and Safety, Zhengzhou 450001, PR China
| | - Yanhong Bai
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, PR China; Henan Key Laboratory of Cold Chain Food Quality and Safety Control, Zhengzhou 450001, PR China; Henan Collaborative Innovation Center of Food Production and Safety, Zhengzhou 450001, PR China.
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