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Hajji AL, Lucas KN. Anthropogenic stressors and the marine environment: From sources and impacts to solutions and mitigation. MARINE POLLUTION BULLETIN 2024; 205:116557. [PMID: 38875966 DOI: 10.1016/j.marpolbul.2024.116557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 05/30/2024] [Accepted: 06/02/2024] [Indexed: 06/16/2024]
Abstract
Human-released contaminants are often poorly understood wholistically in marine ecosystems. This review examines the sources, pathways, impacts on marine animals, and mitigation strategies of five pollutants (plastics, per- and polyfluoroalkyl substances, bisphenol compounds, ethynylestradiol, and petroleum hydrocarbons). Both abiotic and biotic mechanisms contribute to all five contaminants' movement. These pollutants cause short- and long-term effects on many biological processes genetically, molecularly, neurologically, physiologically, reproductively, and developmentally. We explore the extension of adverse outcome pathways to ecosystem effects by considering known inter-generational and trophic relations resulting in large-scale direct and indirect impacts. In doing so, we develop an understanding of their roles as environmental stressors in marine environments for targeted mitigation and future work. Ecosystems are interconnected and so international collaboration, standards, measures preceding mass production, and citizen involvement are required to protect and conserve marine life.
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Affiliation(s)
- Angelina L Hajji
- Biological Sciences, University of Calgary, 2500 University Dr NW, Calgary, AB T2N 1N4, Canada.
| | - Kelsey N Lucas
- Biological Sciences, University of Calgary, 2500 University Dr NW, Calgary, AB T2N 1N4, Canada
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2
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Jaramillo Mejía S, Colavolpe MB, Ganuza M, Albertó E. Use of Ozone as a Substrate Treatment for the Control of Trichoderma in the Production of Pleurotus ostreatus. Curr Microbiol 2024; 81:181. [PMID: 38762690 DOI: 10.1007/s00284-024-03691-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 04/04/2024] [Indexed: 05/20/2024]
Abstract
Pleurotus ostreatus is one of the most widely cultivated species in the world. It can be produced in many lignocellulosic substrates after carrying out a treatment to eliminate competing microorganisms. The most commonly used is pasteurization by steam or by immersion in hot water. The aim of this work is to evaluate if ozone can be employed as treatment for decontamination of the substrate used for the production of the edible mushroom P. ostreatus to control of green mold Trichoderma. Wheat straw was employed as a substrate. We used two different methodologies: bubbling ozone into a tank with water and the substrate, and injecting ozone into a closed tank with the substrate inside. Ten treatments were carried out including two treatments with inoculation by a spray of conidia of Trichoderma. The effect of ozone on the conidia was also evaluated. We found that the treatment of the substrate with ozone in immersed water resulted more effective (lower growth of Trichoderma) than injecting ozone into a closed tank. Anyway, we found that the contaminant fungi could grow on the substrate in both treatments with ozone. We observed that although ozone affected the conidia when it was bubbled into water, some of them still managed to survive and could germinate 72 h later. P. ostreatus could grow and produce fruiting bodies on a substrate that was previously treated with ozone and yields were not affected. Based on the results obtained, we conclude that ozone may not be an effective agent to control Trichoderma in highly contaminated substrates, at least in the experimental conditions that we used, for the production of P. ostreatus.
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Affiliation(s)
- Santiago Jaramillo Mejía
- Lab. of Mycology and Mushroom Cultivation, Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Provincia de Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Buenos Aires, Argentina
| | - María B Colavolpe
- Lab. of Mycology and Mushroom Cultivation, Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Provincia de Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Buenos Aires, Argentina
| | - Mauricio Ganuza
- Lab. of Mycology and Mushroom Cultivation, Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Provincia de Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Buenos Aires, Argentina
| | - Edgardo Albertó
- Lab. of Mycology and Mushroom Cultivation, Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Provincia de Buenos Aires, Argentina.
- Escuela de Bio y Nanotecnologías (UNSAM), Buenos Aires, Argentina.
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3
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Vrankar D, Verseux C, Heinicke C. An airlock concept to reduce contamination risks during the human exploration of Mars. NPJ Microgravity 2023; 9:81. [PMID: 37805607 PMCID: PMC10560228 DOI: 10.1038/s41526-023-00329-5] [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: 06/22/2022] [Accepted: 09/22/2023] [Indexed: 10/09/2023] Open
Abstract
Protecting the Martian environment from contamination with terrestrial microbes is generally seen as essential to the scientific exploration of Mars, especially when it comes to the search for indigenous life. However, while companies and space agencies aim at getting to Mars within ambitious timelines, the state-of-the-art planetary protection measures are only applicable to uncrewed spacecraft. With this paper, we attempt to reconcile these two conflicting goals: the human exploration of Mars and its protection from biological contamination. In our view, the one nominal mission activity that is most prone to introducing terrestrial microbes into the Martian environment is when humans leave their habitat to explore the Martian surface, if one were to use state-of-the-art airlocks. We therefore propose to adapt airlocks specifically to the goals of planetary protection. We suggest a concrete concept for such an adapted airlock, believing that only practical and implementable solutions will be followed by human explorers in the long run.
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Affiliation(s)
- Daniel Vrankar
- Faculty of Business and Economics, Technische Universität Dresden, Helmholtzstraße 10, 01069, Dresden, Germany
- Center of Applied Space Technology and Microgravity - ZARM, University of Bremen, Am Fallturm 2, 28359, Bremen, Germany
| | - Cyprien Verseux
- Center of Applied Space Technology and Microgravity - ZARM, University of Bremen, Am Fallturm 2, 28359, Bremen, Germany
| | - Christiane Heinicke
- Center of Applied Space Technology and Microgravity - ZARM, University of Bremen, Am Fallturm 2, 28359, Bremen, Germany.
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Górecki I, Kołodziejczyk A, Harasymczuk M, Młynarczyk G, Szymanek-Majchrzak K. The Impact of Harsh Stratospheric Conditions on Survival and Antibiotic Resistance Profile of Non-Spore Forming Multidrug Resistant Human Pathogenic Bacteria Causing Hospital-Associated Infections. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2787. [PMID: 36833485 PMCID: PMC9956888 DOI: 10.3390/ijerph20042787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/29/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Bacteria are constantly being lifted to the stratosphere due to air movements caused by weather phenomena, volcanic eruptions, or human activity. In the upper parts of the atmosphere, they are exposed to extremely harsh and mutagenic conditions such as UV and space radiation or ozone. Most bacteria cannot withstand that stress, but for a fraction of them, it can act as a trigger for selective pressure and rapid evolution. We assessed the impact of stratospheric conditions on the survival and antibiotic resistance profile of common non-spore-forming human pathogenic bacteria, both sensitive and extremely dangerous multidrug-resistant variants, with plasmid-mediated mechanisms of resistance. Pseudomonas aeruginosa did not survive the exposure. In the case of strains that were recovered alive, the survival was extremely low: From 0.00001% of Klebsiella pneumoniae carrying the ndm-1 gene and methicillin-resistant Staphylococcus aureus mecA-positive with reduced susceptibility to vancomycin (MRSA/VISA), to a maximum of 0.001% of K. pneumoniae sensitive to all common antibiotics and S. aureus sensitive to vancomycin (MRSA/VSSA). We noticed a tendency towards increased antibiotic susceptibility after the stratospheric flight. Antimicrobial resistance is a current real, global, and increasing problem, and our results can inform current understandings of antibiotic resistance mechanisms and development in bacteria.
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Affiliation(s)
- Ignacy Górecki
- Department of Medical Microbiology, Medical University of Warsaw, Chalubinskiego, Str. 5, 02-004 Warsaw, Poland
| | - Agata Kołodziejczyk
- Analog Astronaut Training Center, Morelowa Str. 1F/4, 30-222 Cracow, Poland
- Space Technology Centre, AGH University of Technology, Czarnowiejska Str. 36, 30-054 Cracow, Poland
| | - Matt Harasymczuk
- Analog Astronaut Training Center, Morelowa Str. 1F/4, 30-222 Cracow, Poland
| | - Grażyna Młynarczyk
- Department of Medical Microbiology, Medical University of Warsaw, Chalubinskiego, Str. 5, 02-004 Warsaw, Poland
| | - Ksenia Szymanek-Majchrzak
- Department of Medical Microbiology, Medical University of Warsaw, Chalubinskiego, Str. 5, 02-004 Warsaw, Poland
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5
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Inactivation of foodborne pathogenic bacteria in water and stainless steel surfaces by vacuum-UV amalgam lamp and low-pressure mercury UV lamp irradiation. INNOV FOOD SCI EMERG 2023. [DOI: 10.1016/j.ifset.2023.103297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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6
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Zuluaga-Calderón B, González HHL, Alzamora SM, Coronel MB. Multi-step ozone treatments of malting barley: Effect on the incidence of Fusarium graminearum and grain germination parameters. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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The impact of ozone treatment on whey concentrate on the flow behaviour, functional and microbiological characteristics of whey powder. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Application of cold plasma and ozone technology for decontamination of Escherichia coli in foods- a review. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108338] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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9
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Sert D, Mercan E. Assessment of powder flow, functional and microbiological characteristics of ozone-treated skim milk powder. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105121] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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dos Santos LMC, da Silva ES, Oliveira FO, Rodrigues LDAP, Neves PRF, Meira CS, Moreira GAF, Lobato GM, Nascimento C, Gerhardt M, Lessa AS, Mascarenhas LAB, Machado BAS. Ozonized Water in Microbial Control: Analysis of the Stability, In Vitro Biocidal Potential, and Cytotoxicity. BIOLOGY 2021; 10:525. [PMID: 34204772 PMCID: PMC8231602 DOI: 10.3390/biology10060525] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/08/2021] [Accepted: 06/10/2021] [Indexed: 11/20/2022]
Abstract
O3 dissolved in water (or ozonized water) has been considered a potent antimicrobial agent, and this study aimed to test this through microbiological and in vitro assays. The stability of O3 was accessed following modifications of the physicochemical parameters of water, such as the temperature and pH, with or without buffering. Three concentrations of O3 (0.4, 0.6, and 0.8 ppm) dissolved in water were tested against different microorganisms, and an analysis of the cytotoxic effects was also conducted using the human ear fibroblast cell line (Hfib). Under the physicochemical conditions of 4 °C and pH 5, O3 remained the most stable and concentrated compared to pH 7 and water at 25 °C. Exposure to ozonized water resulted in high mortality rates for Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Enterococcus faecalis, and Candida albicans. Scanning electron micrograph images indicate that the effects on osmotic stability due to cell wall lysis might be one of the killing mechanisms of ozonized water. The biocidal agent was biocompatible and presented no cytotoxic effect against Hfib cells. Therefore, due to its cytocompatibility and biocidal action, ozonized water can be considered a viable alternative for microbial control, being possible, for example, its use in disinfection processes.
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Affiliation(s)
- Laerte Marlon Conceição dos Santos
- University Center SENAI/CIMATEC, SENAI Institute of Innovation in Health Advanced Systems (ISI SAS), Salvador 41650-010, Bahia, Brazil; (L.M.C.d.S.); (E.S.d.S.); (F.O.O.); (L.d.A.P.R.); (C.S.M.); (G.A.F.M.); (L.A.B.M.)
| | - Eduardo Santos da Silva
- University Center SENAI/CIMATEC, SENAI Institute of Innovation in Health Advanced Systems (ISI SAS), Salvador 41650-010, Bahia, Brazil; (L.M.C.d.S.); (E.S.d.S.); (F.O.O.); (L.d.A.P.R.); (C.S.M.); (G.A.F.M.); (L.A.B.M.)
| | - Fabricia Oliveira Oliveira
- University Center SENAI/CIMATEC, SENAI Institute of Innovation in Health Advanced Systems (ISI SAS), Salvador 41650-010, Bahia, Brazil; (L.M.C.d.S.); (E.S.d.S.); (F.O.O.); (L.d.A.P.R.); (C.S.M.); (G.A.F.M.); (L.A.B.M.)
| | - Leticia de Alencar Pereira Rodrigues
- University Center SENAI/CIMATEC, SENAI Institute of Innovation in Health Advanced Systems (ISI SAS), Salvador 41650-010, Bahia, Brazil; (L.M.C.d.S.); (E.S.d.S.); (F.O.O.); (L.d.A.P.R.); (C.S.M.); (G.A.F.M.); (L.A.B.M.)
| | - Paulo Roberto Freitas Neves
- University Center SENAI/CIMATEC, SENAI Computational Modeling and Industrial Technology, Salvador 41650-010, Bahia, Brazil;
| | - Cássio Santana Meira
- University Center SENAI/CIMATEC, SENAI Institute of Innovation in Health Advanced Systems (ISI SAS), Salvador 41650-010, Bahia, Brazil; (L.M.C.d.S.); (E.S.d.S.); (F.O.O.); (L.d.A.P.R.); (C.S.M.); (G.A.F.M.); (L.A.B.M.)
| | - Greta Almeida Fernandes Moreira
- University Center SENAI/CIMATEC, SENAI Institute of Innovation in Health Advanced Systems (ISI SAS), Salvador 41650-010, Bahia, Brazil; (L.M.C.d.S.); (E.S.d.S.); (F.O.O.); (L.d.A.P.R.); (C.S.M.); (G.A.F.M.); (L.A.B.M.)
| | - Gabriela Monteiro Lobato
- China Three Gorges Corporation—CTG Brazil, Rio Paraná Energia S.A. Rodovia MS-444 s/nº km 58, Ilha Solteira 79590-000, Selviria, Brazil; (G.M.L.); (C.N.); (M.G.)
| | - Carlos Nascimento
- China Three Gorges Corporation—CTG Brazil, Rio Paraná Energia S.A. Rodovia MS-444 s/nº km 58, Ilha Solteira 79590-000, Selviria, Brazil; (G.M.L.); (C.N.); (M.G.)
| | - Marcelo Gerhardt
- China Three Gorges Corporation—CTG Brazil, Rio Paraná Energia S.A. Rodovia MS-444 s/nº km 58, Ilha Solteira 79590-000, Selviria, Brazil; (G.M.L.); (C.N.); (M.G.)
| | - Arlene Souza Lessa
- Gonçalo Moniz Institute, FIOCRUZ Microscopy Service, Technological Platforms Network, Salvador 40296-710, Bahia, Brazil;
| | - Luis Alberto Breda Mascarenhas
- University Center SENAI/CIMATEC, SENAI Institute of Innovation in Health Advanced Systems (ISI SAS), Salvador 41650-010, Bahia, Brazil; (L.M.C.d.S.); (E.S.d.S.); (F.O.O.); (L.d.A.P.R.); (C.S.M.); (G.A.F.M.); (L.A.B.M.)
| | - Bruna Aparecida Souza Machado
- University Center SENAI/CIMATEC, SENAI Institute of Innovation in Health Advanced Systems (ISI SAS), Salvador 41650-010, Bahia, Brazil; (L.M.C.d.S.); (E.S.d.S.); (F.O.O.); (L.d.A.P.R.); (C.S.M.); (G.A.F.M.); (L.A.B.M.)
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Sert D, Mercan E. Effects of ozone treatment to milk and whey concentrates on degradation of antibiotics and aflatoxin and physicochemical and microbiological characteristics. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111226] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Technological Advances in Ozone and Ozonized Water Spray Disinfection Devices. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11073081] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
To control infectious diseases such as the severe acute respiratory syndrome coronavirus (Covid-19) that caused the current pandemic, disinfection measures are essential. Among building measures, disinfection chambers can help to decrease the transmission rate through the sanitizing capacity of the disinfectant used, which can thereby clean surfaces or humans. Out of existing biocides, ozone is considered one of the safest for humans, but one of the most powerful oxidizers, making the substance a better alternative as the biocidal solution in disinfection chambers. Analyses were carried out by using all patented documents related to disinfection chambers that used ozone as a disinfectant. A Derwent Innovation Index (DII) database search was undertaken to find these patents. Patent prospecting resulted in 620 patent documents that were divided into 134 patent families. There was no technology related to protective barriers for individuals, and the majority of patents in the retrieved data aimed at sterilizing medical devices and surfaces. Given that the specific Cooperative Patent Classification (CPC) code for ozone dissolved in liquid was used in the methodology search, but not included among the 10 most used codes in the patents, the use of ozonized water may be an innovative approach in the technology landscape of sterilization chambers.
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Sert D, Mercan E, Kara Ü. Butter production from ozone-treated cream: Effects on characteristics of physicochemical, microbiological, thermal and oxidative stability. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109722] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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CRISTIANO LUIGI. Could ozone be an effective disinfection measure against the novel coronavirus (SARS-CoV-2)? JOURNAL OF PREVENTIVE MEDICINE AND HYGIENE 2020; 61:E301-E303. [PMID: 33150218 PMCID: PMC7595067 DOI: 10.15167/2421-4248/jpmh2020.61.3.1596] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/01/2020] [Indexed: 11/16/2022]
Abstract
The new SARS-CoV-2/COVID-19 emergency has imposed new disinfection and sanitation measures of work environments also to beauty and health professional workers and in this context ozone shows growing interest. Ozone has proven to be highly effective in killing bacteria, fungi, and molds and inactivating viruses both on the surfaces and suspended in the air. Ozone is proven to be effective also for the inactivation of the SARS virus, while for the novel SARS-CoV-2 it is supposed that it be equally effective but specific studies are needed.
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Affiliation(s)
- LUIGI CRISTIANO
- Aesthetic and Medical Biotechnologies Research Unit, Prestige, Loro Ciuffenna (AR), Italy
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Blanchard EL, Lawrence JD, Noble JA, Xu M, Joo T, Ng NL, Schmidt BE, Santangelo PJ, Finn M. Enveloped Virus Inactivation on Personal Protective Equipment by Exposure to Ozone. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2020:2020.05.23.20111435. [PMID: 32511511 PMCID: PMC7273279 DOI: 10.1101/2020.05.23.20111435] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Ozone is a highly oxidizing gas easily generated from atmospheric oxygen with inexpensive equipment and is commonly used for the disinfection of municipal water, foods, and surfaces. We report tests of the ability of ozone to inactivate enveloped respiratory viruses (influenza A virus and respiratory syncytial virus), chosen as more easily handled surrogates for SARS-CoV-2, on N95 respirators and other personal protective equipment (PPE) commonly used in hospitals. At 20 ppm, an ozone concentration easily achieved by standard commercial equipment, the viruses were inactivated with high efficiency as long as the relative humidity was above a threshold value of approximately 50%. In the absence of humidity control, disinfection is more variable and requires considerably longer exposure under relatively dry conditions. This report extends the observations of a previous publication (http://doi.org/10.1080/01919510902747969) to hospital-relevant materials and provides additional details about the relationship of humidity to the antiviral activity of ozone. Home CPAP disinfection devices using ozone can provide effective results for individuals. Ozone did not appear to degrade any of the materials tested except for elastic bands if strained during treatment (such as by the pressure exerted by stapled attachment to N95 respirators). The filtration efficiency of N95 respirator material was not compromised. Overall, we recommend exposures of at least 40 minutes to 20 ppm ozone and >70% relative humidity at ambient temperatures (21-24°C) for 4-log (99.99%) reduction of viral infectivity on a variety of PPE, including gowns, face shields, and respirators. Shorter exposure times are likely to be effective under these conditions, but at the risk of some variability for different materials. Higher ozone concentrations and higher humidity levels promoted faster inactivation of viruses. Our work suggests that ozone exposure can be a widely accessible method for disinfecting PPE, permitting safer re-use for healthcare workers and patients alike in times of shortage.
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Affiliation(s)
- Emmeline L. Blanchard
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Justin D. Lawrence
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Jeffery A. Noble
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Minghao Xu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
| | - Taekyu Joo
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Nga Lee Ng
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, USA
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Britney E. Schmidt
- School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Philip J. Santangelo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - M.G. Finn
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA
- School of Biological Sciences; Georgia Institute of Technology, Atlanta, GA, USA
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Stadler E, Fischer U. Sanitization of Oak Barrels for Wine-A Review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:5283-5295. [PMID: 32323983 DOI: 10.1021/acs.jafc.0c00816] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Oak barrels form an integral part of wine production, especially that of high-quality wines where they are implemented as fermentation and aging vessels. Insufficient cleaning and sanitization of barrels can result in microbial spoilage which may have a detrimental impact on wine quality. To date, no review has been published on the various sanitization methods for wine barrels. The objective of this review is to provide an overview of the sanitization methods used in wineries from conventional techniques like the use of sulfur dioxide and steam to alternative and new approaches using ozone and high-power ultrasound. The methods' efficacies are outlined in terms of their ability to eradicate spoilage microorganisms such as Brettanomyces and acetic or lactic acid bacteria. Furthermore, their advantages and drawbacks are described together with their influence on physicochemical properties of the wood. Finally, limitations in existing knowledge are discussed and areas that merit further research are identified.
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Affiliation(s)
- Engela Stadler
- Institute for Viticulture and Oenology, Dienstleistungszentrum Ländlicher Raum (DLR) Rheinpfalz, Breitenweg 71, 67435 Neustadt an der Weinstraße, Germany
- Technical University of Kaiserslautern, Faculty of Chemistry, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, Germany
| | - Ulrich Fischer
- Institute for Viticulture and Oenology, Dienstleistungszentrum Ländlicher Raum (DLR) Rheinpfalz, Breitenweg 71, 67435 Neustadt an der Weinstraße, Germany
- Technical University of Kaiserslautern, Faculty of Chemistry, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, Germany
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Combination of Low Fluctuation of Temperature with TiO 2 Photocatalytic/Ozone for the Quality Maintenance of Postharvest Peach. Foods 2020; 9:foods9020234. [PMID: 32098160 PMCID: PMC7073975 DOI: 10.3390/foods9020234] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/18/2020] [Accepted: 02/20/2020] [Indexed: 11/17/2022] Open
Abstract
Chilling injury, tissue browning, and fungal infection are the major problems of peach fruit during post-harvest storage. In this study, a precise temperature control cold storage with low-temperature fluctuation (LFT) and internal circulation flow system is designed. An ozone (O3) generator and a (titanium dioxide) TiO2 photocatalytic reactor were applied to cold storage to investigate the variation of LFT combined with ozone fumigation and a TiO2 photocatalytic reactor in the efficiency of delaying ripening and maintaining peach fruit quality. Results showed that the temperature fluctuation with the improved control system was only ±0.1 to ±0.2 °C compared with that of ±0.5 to ±1.0 °C in conventional cold storage. LFT significantly reduced the chilling injury of peach fruit during storage. Although LFT combined with fumigation of 200 mg m−3 ozone periodical treatment slightly damaged the peach fruit after 40 d of storage, its combination with the TiO2 photocatalytic system significantly improved the postharvest storage quality of the fruit. This treatment maintained higher titratable acidity (TA), total soluble solids (TSS), better firmness, color, microstructure, and lower decay rate, polyphenol oxidase (PPO) activities, total phenol accumulation, respiratory intensity, ethylene production, and malondialdehyde (MDA) content during 60 d of storage. All the results show that LFT combined with the TiO2 photocatalytic system might be a promising technology for quality preservation in peach fruit storage.
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Sanitization Potential of Ozone and Its Role in Postharvest Quality Management of Fruits and Vegetables. FOOD ENGINEERING REVIEWS 2019. [DOI: 10.1007/s12393-019-09204-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Wang L, Fan X, Sokorai K, Sites J. Quality deterioration of grape tomato fruit during storage after treatments with gaseous ozone at conditions that significantly reduced populations of Salmonella on stem scar and smooth surface. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.03.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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20
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Guilherme S, Crespo R, Azevedo D, Marques A, Santos MA, Serradeiro R, Pacheco M. DNA and chromosomal damage in Senegalese sole (Solea senegalensis) as side effects of ozone-based water treatment - Contribution to optimization of fish-farming practices. Comp Biochem Physiol C Toxicol Pharmacol 2019; 219:68-76. [PMID: 30771494 DOI: 10.1016/j.cbpc.2019.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 10/27/2022]
Abstract
The progressive growth of aquaculture implicates a dependence on large water amounts, which are submitted to disinfection processes, namely ozonation. Considering the importance of genomic integrity, it is critical to improve the knowledge on ozone-related genotoxic hazard to organisms reared in recirculating aquaculture systems (RAS) applying ozonation. Therefore, genetic damage induced by ozone exposure in the Senegalese sole (Solea senegalensis) was assessed, combining the comet and the erythrocytic nuclear abnormalities (ENA) assays, reflecting different damage levels, i.e. DNA and chromosomal damage, respectively. Fish were subjected to a daily 6-h ozone (0.15 mg L-1) exposure, repeated for 3 consecutive days, simulating a short-term event of overozonation. To assess the temporal impact of the previous event, the progression of damage was evaluated 7 days later, following transference to ozone-free water or to 0.07 mg L-1 ozone, a routinely adopted level in RAS. Both endpoints pointed to the ozone genotoxic potential, displaying DNA oxidation as a possible mechanism of damage. Overall, the present findings pointed out the genotoxic hazard of ozone to fish, highlighting the importance of these types of studies and contributing to improve aquaculture practices, namely in RAS systems. These early genotoxic signals may be a prelude to negative repercussions on fish health, which may affect the aquaculture productivity. The present findings recommend precautions in relation to accidental or intentional overozonation in fish-farming, even when short-term events are considered. The strategies to mitigate the impact of ozonation in S. senegalensis may include a dietary extra supplementation of antioxidants (regularly, or punctually in cases of overozonation).
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Affiliation(s)
- S Guilherme
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - R Crespo
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - D Azevedo
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - A Marques
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - M A Santos
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
| | - R Serradeiro
- Riasearch, Rua do Farol, N° 131, Torrão do Lameiro, 3880-394 Ovar, Portugal
| | - M Pacheco
- Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
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21
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Oliver JC, Bredarioli PAP, Leandro FD, Ferreira CBRJ, Veiga SMOM, Dias ALT. Ozone against Pseudomonas aeruginosa biofilms in contact lenses storage cases. Rev Inst Med Trop Sao Paulo 2019; 61:e23. [PMID: 31017184 PMCID: PMC6481249 DOI: 10.1590/s1678-9946201961023] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 02/19/2019] [Indexed: 11/22/2022] Open
Abstract
Pseudomonas aeruginosa is associated with ocular infections such as keratitis. Multipurpose contact lens solutions can be used for washing, disinfection and storage of contact lenses, however, P. aeruginosa biofilm disinfection by this method is unsatisfactory. The present study aimed to investigate the effectiveness of ozonated water in reducing P. aeruginosa colony count. Lenses kept in storage cases were contaminated with P. aeruginosa and disinfected using ozonized water, chlorhexidine, ultrasound and multipurpose solutions. The multipurpose solutions and ultrasound methods reduced colony count from 1.17 to 1.63 log10 CFU/cm2 (92.93% to 97.31%), respectively, of P. aeruginosa biofilm cell viability when compared to the positive control. Both, ozonated water and chlorhexidine showed 7.42 log reduction in the number of viable cells of P. aeruginosa biofilm. As compared to chlorhexidine, ozonized water did not depose any known toxic residues, so that we recommend it as an alternative disinfectant solution for contact lenses storage cases.
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Affiliation(s)
- Josidel Conceição Oliver
- Universidade Federal de Alfenas, Instituto de Biociências, Departamento de Microbiologia e Imunologia, Alfenas, Minas Gerais, Brazil
| | - Paula Anatália Pereira Bredarioli
- Universidade Federal de Alfenas, Instituto de Biociências, Departamento de Microbiologia e Imunologia, Alfenas, Minas Gerais, Brazil.,Universidade Federal de Alfenas, Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Alfenas, Minas Gerais, Brazil.,Universidade de São Paulo, Faculdade de Ciências Farmacêuticas, São Paulo, São Paulo, Brazil
| | - Fabrício Damasceno Leandro
- Universidade Federal de Alfenas, Instituto de Biociências, Departamento de Microbiologia e Imunologia, Alfenas, Minas Gerais, Brazil.,Universidade Federal de Alfenas, Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Alfenas, Minas Gerais, Brazil
| | | | - Sandra Maria Oliveira Morais Veiga
- Universidade Federal de Alfenas, Faculdade de Ciências Farmacêuticas, Departamento de Alimentos e Medicamentos, Alfenas, Minas Gerais, Brazil
| | - Amanda Latercia Tranches Dias
- Universidade Federal de Alfenas, Instituto de Biociências, Departamento de Microbiologia e Imunologia, Alfenas, Minas Gerais, Brazil
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Gryzinska M, Wlazlo L, Nowakowicz-Debek B, Jezewska-Witkowska G, Jakubczak A. DNA Methylation in Yeast-Like Fungi of the Species Candida albicans Induced by Different Lengths of Exposure to Ozone. RUSS J GENET+ 2019. [DOI: 10.1134/s1022795419030086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Alves H, Alencar ERD, Ferreira WFDS, Silva CRD, Ribeiro JL. Aspectos microbiológicos e físico-químicos de morango exposto ao gás ozônio em diferentes concentrações durante o armazenamento. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2019. [DOI: 10.1590/1981-6723.00218] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resumo Objetivou-se com este trabalho avaliar aspectos microbiológicos e físico-químicos de morangos da variedade Portola, expostos ao gás ozônio em diferentes concentrações e armazenados durante seis dias sob refrigeração. Foram avaliadas concentrações do ozônio equivalentes a 0, 4, 9, 14 e 18 mg L-1, vazão de 1 L min -1, na temperatura de 25 °C, por 30 min. No que tange à qualidade microbiológica, avaliou-se a presença de Salmonella spp. e quantificaram-se coliformes totais, E. coli, bolores e leveduras, e mesófilos aeróbios. Com relação à qualidade físico-química, analisaram-se perda de massa, acidez total titulável, sólidos solúveis totais, pH, relação sólidos solúveis totais e acidez total titulável, além da coloração dos frutos. Adotou-se Delineamento Inteiramente Casualizado em Esquema Fatorial 5×4, sendo cinco tratamentos e quatro períodos de armazenamento (0, 2, 4 e 6 dias), com três repetições. Não foi detectada a presença de Salmonella spp. nos frutos submetidos ou não à ozonização. Quanto à E. coli, a contagem foi inferior ao limite de detecção. A baixa e irregular contagem de coliformes totais nos frutos não permitiu inferir sobre a capacidade do ozônio de inativar microrganismos desse grupo. O ozônio se mostrou eficiente no controle de bolores e de leveduras, e de mesófilos aeróbios em morangos, durante o armazenamento. De maneira geral, o ozônio não afetou negativamente a qualidade físico-química dos morangos. Por outro lado, verificou-se menor perda de massa nos frutos ozonizados quanto maior a concentração de exposição ao gás. Concluiu-se que o ozônio é um importante agente antimicrobiano e, nas condições adotadas no trabalho, provocou redução de microrganismos indesejáveis. Em geral, o ozônio não interferiu nas variáveis físico-químicas avaliadas.
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24
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Zhao YM, de Alba M, Sun DW, Tiwari B. Principles and recent applications of novel non-thermal processing technologies for the fish industry-a review. Crit Rev Food Sci Nutr 2018; 59:728-742. [PMID: 30580554 DOI: 10.1080/10408398.2018.1495613] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Thermal treatment is a traditional method for food processing, which can kill microorganisms but also lead to physicochemical and sensory quality damage, especially to temperature-sensitive foods. Nowadays consumers' increasing interest in microbial safety products with premium appearance, flavor, great nutritional value and extended shelf-life has promoted the development of emerging non-thermal food processing technologies as alternative or substitution to traditional thermal methods. Fish is an important and world-favored food but has a short shelf-life due to its extremely perishable characteristic, and the microbial spoilage and oxidative process happen rapidly just from the moment of capture, making it dependent heavily on post-harvest preservation. The applications of novel non-thermal food processing technologies, including high pressure processing (HPP), ultrasound (US), pulsed electric fields (PEF), pulsed light (PL), cold plasma (CP) and ozone can extend the shelf-life by microbial inactivation and also keep good sensory quality attributes of fish, which is of high interest for the fish industry. This review presents the principles, developments of emerging non-thermal food processing technologies, and also their applications in fish industry, with the main focus on microbial inactivation and sensory quality. The promising results showed great potential to keep microbial safety while maintaining organoleptic attributes of fish products. What's more, the strengths and weaknesses of these technologies are also discussed. The combination of different food processing technologies or with advanced packaging methods can improve antimicrobial efficacy while not significantly affect other quality properties under optimized treatment.
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Affiliation(s)
- Yi-Ming Zhao
- a Food Refrigeration and Computerised Food Technology (FRCFT), School of Biosystems and Food Engineering , University College Dublin, National University of Ireland , Belfield , Dublin 4 , Ireland.,b Teagasc Food Research Centre , Ashtown , Dublin 15 , Ireland
| | - Maria de Alba
- b Teagasc Food Research Centre , Ashtown , Dublin 15 , Ireland
| | - Da-Wen Sun
- a Food Refrigeration and Computerised Food Technology (FRCFT), School of Biosystems and Food Engineering , University College Dublin, National University of Ireland , Belfield , Dublin 4 , Ireland
| | - Brijesh Tiwari
- b Teagasc Food Research Centre , Ashtown , Dublin 15 , Ireland
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Durek J, Schlüter O, Roscher A, Durek P, Fröhling A. Inhibition or Stimulation of Ochratoxin A Synthesis on Inoculated Barley Triggered by Diffuse Coplanar Surface Barrier Discharge Plasma. Front Microbiol 2018; 9:2782. [PMID: 30519219 PMCID: PMC6251328 DOI: 10.3389/fmicb.2018.02782] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 10/30/2018] [Indexed: 11/13/2022] Open
Abstract
Ochratoxin A (OTA) is one of the most abundant food-contaminating mycotoxins. Besides their high toxicity, mycotoxins are highly stable to physical, chemical or biological detoxification. Therefore, the treatment with cold atmospheric plasma could be one approach to reduce the amount of mycotoxins in different products. The aim of this study was to determine the influence of cold atmospheric plasma on the inactivation of Aspergillus niger and Penicillium verrucosum inoculated on barley and their production of OTA. Inoculated barley was treated with plasma generated by dry air, CO2 or CO2 + O2 for 1 or 3 min and stored for up to two weeks at 9, 25, or 37°C. Three minutes of air plasma treatment effectively significantly reduced the total mold count of both microorganisms by 2.5-3 log cycles. The production of OTA from A. niger was only low, therefore the treatment effect was indistinguishable. The treatment of P. verrucosum on barley after an incubation of five days using a CO2 + O2 plasma resulted in a reduction of the OTA content from 49.0 (untreated) to 27.5 (1 min) and 23.8 ng/g (3 min), respectively. In contrast, CO2 plasma caused an increase of the OTA amount from 49.0 (untreated) to 55.8 (1 min) and 72.9 ng/g (3 min). Finally, the use of air plasma resulted likewise in a decrease of the OTA concentration from 56.9 (untreated) to 25.7 (1 min) and 20.2 ng/g (3 min), respectively. Reducing the incubation time before the treatment to 24 h caused in contrast an increase of the OTA content from 3.1 (untreated) to 29.1 (1 min) and 20.7 ng/g (3 min). Due to the high standard deviation, these changes were not significant, but the tendencies were clearly visible, showing the strong impact of the plasma gas on the OTA production. The results show, that even if the total mold count was reduced, under certain conditions the OTA amount was yet enhanced, probably due to a stress reaction of the mold. Concluding, the plasma gas and incubation conditions have to be considered to allow a successful inactivation of molds and in particular their toxic metabolites.
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Affiliation(s)
- Julia Durek
- Leibniz Institute for Agricultural Engineering and Bioeconomy, Quality and Safety of Food and Feed, Potsdam, Germany
| | - Oliver Schlüter
- Leibniz Institute for Agricultural Engineering and Bioeconomy, Quality and Safety of Food and Feed, Potsdam, Germany
| | - Anne Roscher
- Leibniz Institute for Agricultural Engineering and Bioeconomy, Quality and Safety of Food and Feed, Potsdam, Germany
| | - Pawel Durek
- German Rheumatism Research Centre Berlin, Berlin, Germany
| | - Antje Fröhling
- Leibniz Institute for Agricultural Engineering and Bioeconomy, Quality and Safety of Food and Feed, Potsdam, Germany
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26
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Los A, Ziuzina D, Bourke P. Current and Future Technologies for Microbiological Decontamination of Cereal Grains. J Food Sci 2018; 83:1484-1493. [PMID: 29799123 DOI: 10.1111/1750-3841.14181] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/07/2018] [Accepted: 04/10/2018] [Indexed: 11/26/2022]
Abstract
Cereal grains are the most important staple foods for mankind worldwide. The constantly increasing annual production and yield is matched by demand for cereals, which is expected to increase drastically along with the global population growth. A critical food safety and quality issue is to minimize the microbiological contamination of grains as it affects cereals both quantitatively and qualitatively. Microorganisms present in cereals can affect the safety, quality, and functional properties of grains. Some molds have the potential to produce harmful mycotoxins and pose a serious health risk for consumers. Therefore, it is essential to reduce cereal grain contamination to the minimum to ensure safety both for human and animal consumption. Current production of cereals relies heavily on pesticides input, however, numerous harmful effects on human health and on the environment highlight the need for more sustainable pest management and agricultural methods. This review evaluates microbiological risks, as well as currently used and potential technologies for microbiological decontamination of cereal grains.
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Affiliation(s)
- Agata Los
- Food and Health Research Centre, School of Food Science and Environmental Health, Dublin Inst. of Technology, Dublin 1, Ireland
| | - Dana Ziuzina
- Food and Health Research Centre, School of Food Science and Environmental Health, Dublin Inst. of Technology, Dublin 1, Ireland
| | - Paula Bourke
- Food and Health Research Centre, School of Food Science and Environmental Health, Dublin Inst. of Technology, Dublin 1, Ireland
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27
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Inactivation of Salmonella Enteritidis PT30 on the surface of unpeeled almonds by cold plasma. INNOV FOOD SCI EMERG 2017. [DOI: 10.1016/j.ifset.2017.02.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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28
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Brodowska AJ, Nowak A, Kondratiuk-Janyska A, Piątkowski M, Śmigielski K. Modelling the Ozone-Based Treatments for Inactivation of Microorganisms. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:E1196. [PMID: 28991199 PMCID: PMC5664697 DOI: 10.3390/ijerph14101196] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 10/02/2017] [Accepted: 10/04/2017] [Indexed: 11/16/2022]
Abstract
The paper presents the development of a model for ozone treatment in a dynamic bed of different microorganisms (Bacillus subtilis, B. cereus, B. pumilus, Escherichia coli, Pseudomonas fluorescens, Aspergillus niger, Eupenicillium cinnamopurpureum) on a heterogeneous matrix (juniper berries, cardamom seeds) initially treated with numerous ozone doses during various contact times was studied. Taking into account various microorganism susceptibility to ozone, it was of great importance to develop a sufficiently effective ozone dose to preserve food products using different strains based on the microbial model. For this purpose, we have chosen the Weibull model to describe the survival curves of different microorganisms. Based on the results of microorganism survival modelling after ozone treatment and considering the least susceptible strains to ozone, we selected the critical ones. Among tested strains, those from genus Bacillus were recognized as the most critical strains. In particular, B. subtilis and B. pumilus possessed the highest resistance to ozone treatment because the time needed to achieve the lowest level of its survival was the longest (up to 17.04 min and 16.89 min for B. pumilus reduction on juniper berry and cardamom seed matrix, respectively). Ozone treatment allow inactivate microorganisms to achieving lower survival rates by ozone dose (20.0 g O₃/m³ O₂, with a flow rate of 0.4 L/min) and contact time (up to 20 min). The results demonstrated that a linear correlation between parameters p and k in Weibull distribution, providing an opportunity to calculate a fitted equation of the process.
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Affiliation(s)
- Agnieszka Joanna Brodowska
- Institute of General Food Chemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 90-924 Lodz, Poland.
| | - Agnieszka Nowak
- Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 90-924 Lodz, Poland.
| | | | - Marcin Piątkowski
- Division of Heat and Mass Transfer, Faculty of Process and Environmental Engineering, Lodz University of Technology, 90-924 Lodz, Poland.
| | - Krzysztof Śmigielski
- Institute of General Food Chemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 90-924 Lodz, Poland.
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Poma A, Colafarina S, Aruffo E, Zarivi O, Bonfigli A, Di Bucchianico S, Di Carlo P. Effects of ozone exposure on human epithelial adenocarcinoma and normal fibroblasts cells. PLoS One 2017; 12:e0184519. [PMID: 28886142 PMCID: PMC5590931 DOI: 10.1371/journal.pone.0184519] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/27/2017] [Indexed: 12/03/2022] Open
Abstract
Previous studies show variable ozone cytotoxicity and genotoxicity in cell cultures, laboratory animals and humans directly exposed to tropospheric ozone. The aim of this study was therefore to investigate and compare the cyto and genotoxic effects of ozone using adenocarcinoma human alveolar basal epithelial cells A549 and normal human fibroblasts Hs27. A cell culture chamber with controlled atmosphere (a simulation reactor) was built to inject a flow of 120 ppb of ozone, which is two times the threshold value for the protection of human health, fixed by the EU legislation. Cell proliferation was evaluated by a luminescent cell viability assay while we assessed the genotoxic potential of ozone by the induction of micronuclei as well as evaluating DNA strand breaks by the induction of micronuclei evaluated by means of the cytokinesis-block micronucleus (CBMN) assay as well as evaluating DNA strand breaks by Alkaline Comet Assay (CA) or Comet Assay. A549 cells viability decreases significantly at 24 hours treatment with 120 ppb of O3 while at 48 hours and 72 hours O3 treated cells viability doesn’t differ in respect to the control. However a significative decrease of A549 viability is shown at 72 hours vs. 48 hours in both treated and not-treated cells. The viability trend in the Hs27 cells did not show any significant changes in treated samples compared to the control in all conditions. The two genotoxicity biomarkers, the micronucleus and the comet tests, showed in both the cell types exposed to ozone, a significant increase in the number of micronuclei and in the tail DNA % in respect to the control even if at different times/cell type. Moreover, we found that O3 provokes genotoxic effects more evident in A549 cancer cells than in normal fibroblasts Hs27 ones. We applied a cell growth simulation model referred to ozone treated or not cell lines to confirm that the ozone exposure causes a slackening in the cells replication.
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Affiliation(s)
- Anna Poma
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
- * E-mail:
| | - Sabrina Colafarina
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Eleonora Aruffo
- Department of Psychological, Health and Territorial Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
- Centre of Excellence CETEMPS, University of L'Aquila, L'Aquila, Italy
| | - Osvaldo Zarivi
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Antonella Bonfigli
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | | | - Piero Di Carlo
- Department of Psychological, Health and Territorial Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
- Centre of Excellence CETEMPS, University of L'Aquila, L'Aquila, Italy
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Brodowska AJ, Nowak A, Śmigielski K. Ozone in the food industry: Principles of ozone treatment, mechanisms of action, and applications: An overview. Crit Rev Food Sci Nutr 2017; 58:2176-2201. [PMID: 28394634 DOI: 10.1080/10408398.2017.1308313] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The food contamination issue requires continuous control of food at each step of the production process. High quality and safety of products are equally important factors in the food industry. They may be achieved with several, more or less technologically advanced methodologies. In this work, we review the role, contribution, importance, and impact of ozone as a decontaminating agent used to control and eliminate the presence of microorganisms in food products as well as to extend their shelf-life and remove undesirable odors. Several researchers have been focusing on the ozone's properties and applications, proving that ozone treatment technology can be applied to all types of foods, from fruits, vegetables, spices, meat, and seafood products to beverages. A compilation of those works, presented in this review, can be a useful tool for establishing appropriate ozone treatment conditions, and factors affecting the improved quality and safety of food products. A critical evaluation of the advantages and disadvantages of ozone in the context of its application in the food industry is presented as well.
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Affiliation(s)
- Agnieszka Joanna Brodowska
- a Institute of General Food Chemistry, Faculty of Biotechnology and Food Sciences , Lodz University of Technology , Lodz , Poland
| | - Agnieszka Nowak
- b Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences , Lodz University of Technology , Lodz , Poland
| | - Krzysztof Śmigielski
- a Institute of General Food Chemistry, Faculty of Biotechnology and Food Sciences , Lodz University of Technology , Lodz , Poland
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31
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Chidambaranathan AS, Balasubramanium M. Comprehensive Review and Comparison of the Disinfection Techniques Currently Available in the Literature. J Prosthodont 2017; 28:e849-e856. [PMID: 28422353 DOI: 10.1111/jopr.12597] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2017] [Indexed: 11/28/2022] Open
Abstract
The goal of disinfection in the dental office is to prevent the spread of infection from one patient to another and maintain the safety of the dental care providers. Prevention of cross infection has significant effect on infection control. The standard procedure of rinsing impressions under tap water immediately after removal from the mouth eliminates microorganisms along with saliva and blood. A broad search on published literature was done using the keywords impression materials, disinfection method, and sterilization of dental impression from 1980 to 2016 in Medline, Google Scholar, the internet, and textbooks. This article critically analyzes the various published methods of dental impression disinfection in dentistry.
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32
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Poulis N, Prombonas A, Yannikakis S, Karampotsos T, Katsarou MS, Drakoulis N. Preliminary SEM Observations on the Surface of Elastomeric Impression Materials after Immersion or Ozone Disinfection. J Clin Diagn Res 2017; 10:ZC01-ZC05. [PMID: 28208993 DOI: 10.7860/jcdr/2016/20330.8949] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 08/02/2016] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Surface integrity of dental elastomeric impression materials that are subjected to disinfection is of major importance for the quality of the final prosthetic restorations. AIM The aim of this qualitative Scanning Electronic Microscopy (SEM) study was to reveal the effects of immersion or ozone disinfection on the surface of four dental elastomeric impression materials. MATERIALS AND METHODS Four dental elastomeric impression material brands were used (two vinyl polysiloxane silicones, one polyether, and one vinyl polyether silicone). Total of 32 specimens were fabricated, eight from each impression material. Specimens were immersion (0.525% sodium hypochlorite solution or 0.3% benzalkonium chloride solution) or ozone disinfected or served as controls and examined with SEM. RESULTS Surface degradation was observed on several speci-mens disinfected with 0.525% sodium hypochlorite solution. Similar wavy-wrinkling surface structures were observed in almost all specimens, when treated either with 0.3% benzalkonium chloride solution or ozone. CONCLUSION The SEM images obtained from this study revealed that both immersion disinfectants and ozone show similar impression material surface alterations. Ozone seems to be non-inferior as compared to immersion disinfectants, but superior as to environmental protection.
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Affiliation(s)
- Nikolas Poulis
- Laboratory Associate, Department of Dental Technology, Faculty of Health and Caring Professions, Technological Educational Institute of Athens , Egaleo, Attica, Greece
| | - Anthony Prombonas
- Associate Professor, Department of Dental Technology, Faculty of Health and Caring Professions, Technological Educational Institute of Athens , Egaleo, Attica, Greece
| | - Stavros Yannikakis
- Professor, Department of Dental Technology, Faculty of Health and Caring Professions, Technological Educational Institute of Athens , Egaleo, Attica, Greece
| | - Thanasis Karampotsos
- Researcher, Department of Conservation of Antiquities and Works of Art, Faculty of Fine Arts and Design, Technological Educational Institute of Athens , Egaleo, Attica, Greece
| | - Martha-Spyridoula Katsarou
- Post Doc Researcher, Department of Pharmaceutical Technology, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens , Panepistimiopolis Zografou, Athens, Greece
| | - Nikolaos Drakoulis
- Assistant Professor, Department of Pharmaceutical Technology, Faculty of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens , Panepistimiopolis Zografou, Athens, Greece
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Gonçalves AA. Ozone as a Safe and Environmentally Friendly Tool for the Seafood Industry. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2014. [DOI: 10.1080/10498850.2013.841785] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Torlak E, Sert D, Ulca P. Efficacy of gaseous ozone against Salmonella and microbial population on dried oregano. Int J Food Microbiol 2013; 165:276-80. [DOI: 10.1016/j.ijfoodmicro.2013.05.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 05/22/2013] [Accepted: 05/26/2013] [Indexed: 11/29/2022]
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Effect of a combination of low level ozone and metal ions on reducing Escherichia coli O157:H7 and Listeria monocytogenes. Molecules 2013; 18:4018-25. [PMID: 23558542 PMCID: PMC6270139 DOI: 10.3390/molecules18044018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 04/01/2013] [Accepted: 04/01/2013] [Indexed: 11/30/2022] Open
Abstract
Ozonated water has been used as a strong antimicrobial agent against foodborne pathogens. In this study, the combined effect of low level ozonated water and different added components, including 0.2% starch and metal ions (1 mM CuCl2·2H2O and 0.1 mM AgNO3), on inactivation of Escherichia coli O157:H7 and Listeria monocytogenes was investigated. Treatment with 0.4 ppm ozonated water for 30 min resulted in a maximum log reduction in E. coli O157:H7 and L. monocytogenes compared to initial bacterial counts. The log reductions of bacteria in a starch solution containing ozonated water were slightly higher than those in ozonated water alone. Furthermore, the log reductions of E. coli O157:H7 (2.59 and 4.71 log cfu/mL) and L. monocytogenes (2.53 and 4.28 log cfu/mL) in a metal ion solution containing 0.2 and 0.4 ppm ozone for 30 min were significantly higher than those of the water and starch added groups (p < 0.05). These results indicate that a combination of ozonated water and metal ions may be useful as a antimicrobial agent.
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Boxhammer V, Li Y, Köritzer J, Shimizu T, Maisch T, Thomas H, Schlegel J, Morfill G, Zimmermann J. Investigation of the mutagenic potential of cold atmospheric plasma at bactericidal dosages. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2013; 753:23-8. [DOI: 10.1016/j.mrgentox.2012.12.015] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 10/23/2012] [Accepted: 12/15/2012] [Indexed: 10/27/2022]
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Miller FA, Silva CLM, Brandão TRS. A Review on Ozone-Based Treatments for Fruit and Vegetables Preservation. FOOD ENGINEERING REVIEWS 2013. [DOI: 10.1007/s12393-013-9064-5] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Suzuki T, Kaya E, Inukai M. Effects of halides on reaction of nucleosides with ozone. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2012; 31:461-73. [PMID: 22646086 DOI: 10.1080/15257770.2012.679501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Ozone (O(3)), a major component of photochemical oxidants, is used recently as a deodorizer in living spaces. It has been reported that O(3) can directly react with DNA, causing mutagenesis in human cells and carcinogenesis in mice. However, little is known about the effects of coexistent ions in the reaction of O(3). In the present study, we analyzed the effects of halides on the reaction of O(3) with nucleosides using reversed-phase high-performance liquid chromatography with ultraviolet detection. When aqueous O(3) solution was added to a nucleoside mixture in potassium phosphate buffer (pH 7.3), the nucleosides were consumed with the following decreasing order of importance: dGuo > Thd > dCyd > dAdo. The effects of addition of fluoride and chloride in the system were slight. Bromide suppressed the reactions of dGuo, Thd, and dAdo but enhanced the reaction of dCyd. The major products were 5-hydroxy-2'-deoxycytidine, 5-bromo-2'-deoxycytidine, and 8-bromo-2'-deoxyguanosine. The time course and pH dependence of the product yield indicated formation of hypobromous acid as the reactive agent. Iodide suppressed all the reactions effectively. The results suggest that bromide may alter the mutation spectrum by O(3) in humans.
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de Alencar ER, Faroni LRD, Soares NDFF, da Silva WA, Carvalho MCDS. Efficacy of ozone as a fungicidal and detoxifying agent of aflatoxins in peanuts. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2012; 92:899-905. [PMID: 22095762 DOI: 10.1002/jsfa.4668] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 07/18/2011] [Accepted: 08/15/2011] [Indexed: 05/25/2023]
Abstract
BACKGROUND Peanut contamination by fungi is a concern of processors and consumers owing to the association of these micro-organisms with quality deterioration and aflatoxin production. In this study the fungicidal and detoxifying effects of ozone on aflatoxins in peanuts was investigated. Peanut kernels were ozonated at concentrations of 13 and 21 mg L⁻¹ for periods of 0, 24, 48, 72 and 96 h. RESULTS Ozone was effective in controlling total fungi and potentially aflatoxigenic species in peanuts, with a reduction in colony-forming units per gram greater than 3 log cycles at the concentration of 21 mg L⁻¹ after 96 h of exposure. A reduction in the percentage of peanuts with internal fungal populations was also observed, particularly after exposure to ozone at 21 mg L⁻¹. A reduction in the concentrations of total aflatoxins and aflatoxin B1 of approximately 30 and 25% respectively was observed for kernels exposed to ozone at 21 mg L⁻¹ for 96 h. CONCLUSION It was concluded that ozone is an important alternative for peanut detoxification because it is effective in controlling potentially aflatoxigenic fungi and also acts in the reduction of aflatoxin levels in kernels.
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Zoutman D, Shannon M, Mandel A. Effectiveness of a novel ozone-based system for the rapid high-level disinfection of health care spaces and surfaces. Am J Infect Control 2011; 39:873-9. [PMID: 21546123 DOI: 10.1016/j.ajic.2011.01.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 01/09/2011] [Accepted: 01/27/2011] [Indexed: 01/28/2023]
Abstract
BACKGROUND Vapor-based fumigant systems for disinfection of health care surfaces and spaces is an evolving technology. A new system (AsepticSure) uses an ozone-based process to create a highly reactive oxidative vapor with broad and high-level antimicrobial properties. METHODS Ozone gas at 50-500 ppm was combined with 3% hydrogen peroxide vapor in a test chamber and upscaled in rooms measuring 82 m3 and 90 m3 in area. Test organisms included methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococcus, Escherichia coli, Pseudomonas aeruginosa, Clostridium difficile, and Bacillus subtilis spores dried onto steel discs or cotton gauze pads. RESULTS The combination of 80-ppm ozone with 1% hydrogen peroxide vapor achieved a very high level of disinfection, with a ≥6 log10 reduction in the bacteria and spores tested on steel discs and MRSA tested on cotton gauze during a 30- to 90-minute exposure. The entire system was scalable such that it achieved the same high level of disinfection in both the 81-m3 and 90-m3 rooms in 60-90 minutes. CONCLUSION The ozone hydrogen peroxide vapor system provides a very high level of disinfection of steel and gauze surfaces against health care-associated bacterial pathogens. The system is an advanced oxidative process providing a rapid and effective means of disinfecting health care surfaces and spaces.
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Affiliation(s)
- Dick Zoutman
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada.
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Mišík M, Knasmueller S, Ferk F, Cichna-Markl M, Grummt T, Schaar H, Kreuzinger N. Impact of ozonation on the genotoxic activity of tertiary treated municipal wastewater. WATER RESEARCH 2011; 45:3681-3691. [PMID: 21565381 DOI: 10.1016/j.watres.2011.04.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 04/07/2011] [Accepted: 04/07/2011] [Indexed: 05/30/2023]
Abstract
Ozonation is an emerging technology for the removal of micropollutants from treated wastewater. Aim of the present study was to investigate the impact of ozone treatment on genotoxic and acute toxic effects of tertiary treated municipal wastewater. It is known that DNA-damaging chemicals cause adverse effects in the environment and that exposure to humans leads to cancer and other diseases. Toxicity was tested in organisms from three trophic levels namely in bacteria (Salmonella/microsome assays) which enable the detection of gene mutations, in a plant bioassay (micronucleus assay with root tip cells of Allium cepa) which reflects clastogenic and aneugenic effects and in single cell gel electrophoresis (SCGE) tests with mammalian cells which detect DNA migration caused by single-, double strand breaks and alkali labile sites. In the bacterial tests negative results were obtained with untreated samples but after concentration with C(18) cartridges a positive result was found in strains TA1537 and TA98 which are sensitive to frameshift mutagens while no mutations were induced in other tester strains (TA100, TA102 and YG1024). Ozone treatment led to a decrease of the mutagenic activity of the samples. In the SCGE experiments, DNA migration was detected with the unconcentrated effluent of the treatment plant and ozonation led to a substantial decrease of this effect. In the plant bioassays, negative results were obtained with the effluent and ozone treatment did not cause an alteration of the micronucleus frequencies. Also acute toxic effects were monitored in the different indicator organisms under all experimental conditions. The bacteriocidal/bacteriostatic effects which were seen with the concentrated samples were reduced by ozonation. In the experiments with the eukaryotic (plant and animal) cells no acute toxicity was seen with the effluents and ozonation had no impact on their viability. In conclusion findings of this study indicate that ozonation of tertiary effluents of a municipal treatment plant reduces the adverse effects caused by release of mutagens in aquatic ecosystems and does not decrease the viability of bacteria and eukaryotic cells. However, future research is required to find out if, and to which extent these findings can be generalized and which mechanisms account for the detoxification of the wastewater.
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Affiliation(s)
- Miroslav Mišík
- Institute of Cancer Research, Department of Internal Medicine I, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
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Patil S, Valdramidis VP, Karatzas KAG, Cullen PJ, Bourke P. Assessing the microbial oxidative stress mechanism of ozone treatment through the responses of Escherichia coli mutants. J Appl Microbiol 2011; 111:136-44. [PMID: 21457413 DOI: 10.1111/j.1365-2672.2011.05021.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIMS To investigate the effect of the oxidative stress of ozone on the microbial inactivation, cell membrane integrity and permeability and morphology changes of Escherichia coli. METHODS AND RESULTS Escherichia coli BW 25113 and its isogenic mutants in soxR, soxS, oxyR, rpoS and dnaK genes were treated with ozone at a concentration of 6 μg ml⁻¹ for a period up to 240 s. A significant effect of ozone exposure on microbial inactivation was observed. After ozonation, minor effects on the cell membrane integrity and permeability were observed, while scanning electron microscopy analysis showed slightly altered cell surface structure. CONCLUSIONS The results of this study suggest that cell lysis was not the major mechanism of microbial inactivation. The deletion of oxidative stress-related genes resulted in increased susceptibility of E. coli cells to ozone treatment, implying that they play an important role for protection against the radicals produced by ozone. However, DnaK that has previously been shown to protect against oxidative stress did not protect against ozone treatment in this study. Furthermore, RpoS was important for the survival against ozone. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides important information about the role of oxidative stress in the responses of E. coli during ozonation.
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Affiliation(s)
- S Patil
- School of Food Science and Environmental Health, Dublin Institute of Technology, Dublin, Ireland
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Perry JJ, Yousef AE. Decontamination of Raw Foods Using Ozone-Based Sanitization Techniques. Annu Rev Food Sci Technol 2011; 2:281-98. [DOI: 10.1146/annurev-food-022510-133637] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Popular foods such as fresh produce and dry nuts are increasingly implicated in outbreaks of food-transmitted diseases. These products are not amenable to conventional processing technologies; therefore, many alternative decontamination methods are actively investigated. Ozone is a versatile sanitizer with promising applications in some high-risk foods. This antimicrobial agent is active against a broad spectrum of microorganisms, and it can be used effectively in its gaseous or aqueous state. The flexibility afforded by ozone use makes it a viable option for application on easy-to-damage products like fresh produce. If process parameters are adequately controlled, ozone treatment can enhance safety and increase shelf life without adversely affecting product quality. Despite these advantages, ozone may not be suitable for some applications, including treatment of liquid foods and products rich in unsaturated fats and soluble proteins. Ozone, as a powerful oxidizer, must be carefully controlled at all times, and equipment must be rigorously maintained to ensure safety of workers.
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Affiliation(s)
- Jennifer J. Perry
- Department of Food Science and Technology, The Ohio State University, Columbus, Ohio;,
| | - Ahmed E. Yousef
- Department of Food Science and Technology, The Ohio State University, Columbus, Ohio;,
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SHAH NORNADIAHABDULKARIM, RAHMAN RUSSLYABDUL, CHUAN LINGTAU, HASHIM DZULKIFLYMAT. APPLICATION OF GASEOUS OZONE TO INACTIVATE BACILLUS CEREUS IN PROCESSED RICE. J FOOD PROCESS ENG 2010. [DOI: 10.1111/j.1745-4530.2009.00566.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tai HH, Percy KE, Karnosky DF. DNA damage in Populus tremuloides clones exposed to elevated O3. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2010; 158:969-976. [PMID: 19879681 DOI: 10.1016/j.envpol.2009.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2009] [Revised: 09/28/2009] [Accepted: 10/04/2009] [Indexed: 05/28/2023]
Abstract
The effects of elevated concentrations of atmospheric tropospheric ozone (O(3)) on DNA damage in five trembling aspen (Populus tremuloides Michx.) clones growing in a free-air enrichment experiment in the presence and absence of elevated concentrations of carbon dioxide (CO(2)) were examined. Growing season mean hourly O(3) concentrations were 36.3 and 47.3 ppb for ambient and elevated O(3) plots, respectively. The 4th highest daily maximum 8-h ambient and elevated O(3) concentrations were 79 and 89 ppb, respectively. Elevated CO(2) averaged 524 ppm (+150 ppm) over the growing season. Exposure to O(3) and CO(2) in combination with O(3) increased DNA damage levels above background as measured by the comet assay. Ozone-tolerant clones 271 and 8L showed the highest levels of DNA damage under elevated O(3) compared with ambient air; whereas less tolerant clone 216 and sensitive clones 42E and 259 had comparably lower levels of DNA damage with no significant differences between elevated O(3) and ambient air. Clone 8L was demonstrated to have the highest level of excision DNA repair. In addition, clone 271 had the highest level of oxidative damage as measured by lipid peroxidation. The results suggest that variation in cellular responses to DNA damage between aspen clones may contribute to O(3) tolerance or sensitivity.
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Affiliation(s)
- Helen H Tai
- Agriculture and Agri-Food Canada, Potato Research Centre, Fredericton, New Brunswick, Canada.
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Valavanidis A, Loridas S, Vlahogianni T, Fiotakis K. Influence of ozone on traffic-related particulate matter on the generation of hydroxyl radicals through a heterogeneous synergistic effect. JOURNAL OF HAZARDOUS MATERIALS 2009; 162:886-892. [PMID: 18602214 DOI: 10.1016/j.jhazmat.2008.05.124] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Revised: 05/21/2008] [Accepted: 05/22/2008] [Indexed: 05/26/2023]
Abstract
Epidemiologic studies suggest that ozone (O(3)) and airborne particulate matter (PM) can interact causing acute respiratory inflammation and other respiratory diseases. Recent studies investigated the hypothesis that the effects of air pollution caused by O(3) and PM are larger than the effect of these two pollutants individually. We investigated the hypothesis that ozone and traffic-related PM (PM(10) and PM(2.5), diesel and gasoline exhaust particles) interact synergistically to produce increasing amounts of highly reactive hydroxyl radicals (HO) in a heterogeneous aqueous mixture at physiological pH. Electron paramagnetic resonance (EPR) and spin trapping were used for the measurements. Results showed that HO radicals are generated by the catalytic action of PM surface area with ozone and that EPR peak intensities are two to three times higher compared to PM samples without ozone. Incubation of the nucleoside 2'-deoxyguanosine (dG) in aqueous mixtures of ozone and PM at pH 7.4 resulted in the hydroxylation at C(8) position of dG. The formation of 8-hydroxy-2'-deoxyguanosine (8-OHdG) showed a 2-2.5-fold increase over control (PM without O(3)). These results suggest that PM and O(3) act synergistically generating a sustained production of reactive HO radicals. Partitioning of O(3) into the particle phase depends on the concentration, hygroscopicity and particle size.
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Affiliation(s)
- Athanasios Valavanidis
- Department of Chemistry, University of Athens, University Campus Zografou, 15784 Athens, Greece.
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Zuma F, Lin J, Jonnalagadda SB. Ozone-initiated disinfection kinetics of Escherichia coli in water. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2009; 44:48-56. [PMID: 19085594 DOI: 10.1080/10934520802515335] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The effect of ozonation on the rate of disinfection of Escherichia coli was investigated as a function of ozone concentration, ozonation duration and flow rates. Ozone was generated in situ using Corona discharge method using compressed oxygen stream and depending on the oxygen flux the ozone concentrations ranged from 0.91-4.72 mg/L. The rate of disinfection of all the three microbes followed pseudo-first-order kinetics with respect to the microbe count and first order with respect to ozone concentration. The influence of pH and temperature the aqueous systems on the rate of ozone initiated disinfection of the microbe was investigated. The inactivation was faster at lower pH than at basic pH. Molecular ozone is found more effective in disinfection than hydroxyl radicals. Two reported mechanisms for antimicrobial activity of ozone in water systems from the literature are discussed. Based on the experimental findings a probable rate law and mechanism are proposed. Ozonation of natural waters significantly decreased the BOD levels of the control and microbe contaminated waters.
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Affiliation(s)
- Favourite Zuma
- School of Chemistry, University of KwaZulu-Natal, Chiltern Hills, Durban, South Africa
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