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Zheng X, Li M, Tian S, Li S, Chen J, Zhang X, Wu X, Ge X, Tian J, Mu Y, Song J. Corrigendum: Integrated analysis of transcriptome and metabolome reveals the mechanism of chlorine dioxide repressed potato ( Solanum tuberosum L.) tuber sprouting. Front Plant Sci 2024; 15:1373758. [PMID: 38559767 PMCID: PMC10978740 DOI: 10.3389/fpls.2024.1373758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 02/13/2024] [Indexed: 04/04/2024]
Abstract
[This corrects the article DOI: 10.3389/fpls.2022.887179.].
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Affiliation(s)
- Xiaoyuan Zheng
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Mei Li
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Shilong Tian
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Shouqiang Li
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Jianxin Chen
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Xuejiao Zhang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Xiaohua Wu
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Xia Ge
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Jiachun Tian
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Yuwen Mu
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Juan Song
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
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2
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KADOTA C, MIYAOKA Y, KABIR MH, HAKIM H, HASAN MA, SHOHAM D, MURAKAMI H, TAKEHARA K. Evaluation of chlorine dioxide in liquid state and in gaseous state as virucidal agent against avian influenza virus and infectious bronchitis virus. J Vet Med Sci 2023; 85:1040-1046. [PMID: 37648459 PMCID: PMC10600528 DOI: 10.1292/jvms.23-0194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 08/20/2023] [Indexed: 09/01/2023] Open
Abstract
The antiviral activity of chlorine dioxide (ClO2) in liquid (ClO2 gas dissolved liquid) and gaseous state against avian influenza virus (AIV) and infectious bronchitis virus (IBV) was evaluated. To evaluate the effect of ClO2 in liquid state, suspension tests (10 ppm) and carrier tests in dropping / wiping techniques (100 ppm) were performed. In the suspension test, virus titers were reduced below the detection limit within 15 sec after treatment, in spite of the presence of an accompanying organic matter. In the carrier test by dropping technique, AIV and IBV were reduced to below the detection limit in 1 and 3 min, respectively. Following wiping technique, no virus was detected in the wiping sheets after 30 sec of reaction. Both viruses adhering to the carriers were also reduced by 3 logs, thereby indicating that they were effectively inactivated. In addition, the effect of ClO2 gas against IBV in aerosols was evaluated. After the exposure of sprayed IBV to ClO2 gas for a few seconds, 94.2% reduction of the virus titer was observed, as compared to the pre-treatment control. Altogether, hence, ClO2 has an evident potential to be an effective disinfectant for the prevention and control of AIV and IBV infections on poultry farms.
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Affiliation(s)
- Chisaki KADOTA
- Laboratory of Animal Health, Department of Veterinary
Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo,
Japan
| | - Yu MIYAOKA
- Laboratory of Animal Health, Cooperative Division of
Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and
Technology, Tokyo, Japan
| | - Md Humayun KABIR
- Laboratory of Animal Health, Cooperative Division of
Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and
Technology, Tokyo, Japan
| | - Hakimullah HAKIM
- Laboratory of Animal Health, Cooperative Division of
Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and
Technology, Tokyo, Japan
| | - Md Amirul HASAN
- Laboratory of Animal Health, Cooperative Division of
Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and
Technology, Tokyo, Japan
| | - Dany SHOHAM
- Begin-Sadat Center for Strategic Studies, Bar-Ilan
University, Ramat Gan, Israel
| | - Harumi MURAKAMI
- Laboratory of Animal Health, Department of Veterinary
Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo,
Japan
- Laboratory of Animal Health, Cooperative Division of
Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and
Technology, Tokyo, Japan
| | - Kazuaki TAKEHARA
- Laboratory of Animal Health, Department of Veterinary
Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo,
Japan
- Laboratory of Animal Health, Cooperative Division of
Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and
Technology, Tokyo, Japan
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Saguti F, Kjellberg I, Churqui MP, Wang H, Tunovic T, Ottoson J, Bergstedt O, Norder H, Nyström K. The Virucidal Effect of the Chlorination of Water at the Initial Phase of Disinfection May Be Underestimated If Contact Time Calculations Are Used. Pathogens 2023; 12:1216. [PMID: 37887732 PMCID: PMC10609707 DOI: 10.3390/pathogens12101216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/28/2023] Open
Abstract
For the microbiological safety of drinking water, disinfection methods are used to remove or inactivate microorganisms. Chlorine and chlorine dioxide are often used as disinfectants in drinking water treatment plants (DWTPs). We investigated the effectiveness of these chemicals in inactivate echovirus 30 (E30), simian 11 rotavirus (RV SA11), and human adenovirus type 2 (HAdV2) in purified water from a DWTP. Within two minutes of contact, chlorine dioxide inactivated E30 by 4-log10, RV SA11 by 3-log10, and HAdV2 could not be detected, while chlorine reduced E30 by 3-log10, RV SA11 by 2-3log10, and HAdV2 by 3-4log10. However, viral genomes could be detected for up to 2 h using qPCR. The CT method, based on a combination of disinfectant concentration and contact time, during such a short initial phase, is problematic. The high concentrations of disinfectant needed to neutralize organic matter may have a strong immediate effect on virus viability. This may lead to the underestimation of disinfection and overdosing of disinfectants in water with organic contamination. These results are useful for the selection of disinfection systems for reuse of treated wastewater and in the risk assessment of water treatment processes using chlorine and chlorine dioxide.
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Affiliation(s)
- Fredy Saguti
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Inger Kjellberg
- Göteborgs Stad Kretslopp och Vatten, 424 23 Gothenburg, Sweden
| | - Marianela Patzi Churqui
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Hao Wang
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Timur Tunovic
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Jakob Ottoson
- Department of Risk and Benefit Assessment, Swedish Food Agency, 75126 Uppsala, Sweden
| | - Olof Bergstedt
- Göteborgs Stad Kretslopp och Vatten, 424 23 Gothenburg, Sweden
| | - Helene Norder
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Kristina Nyström
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
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Giraldo Isaza L, Mortha G, Marlin N, Molton F, Duboc C. ClO 2-Mediated Oxidation of the TEMPO Radical: Fundamental Considerations of the Catalytic System for the Oxidation of Cellulose Fibers. Molecules 2023; 28:6631. [PMID: 37764407 PMCID: PMC10535468 DOI: 10.3390/molecules28186631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/08/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
The reaction mechanism of ClO2-mediated TEMPO oxidation was investigated by EPR spectroscopy and UV-Vis spectroscopy in the context of an alternative TEMPO sequence for cellulose fiber oxidation. Without the presence of a cellulosic substrate, a reversibility between TEMPO and its oxidation product, TEMPO+, was displayed, with an effect of the pH and reagent molar ratios. The involvement of HOCl and Cl-, formed as byproducts in the oxidation mechanism, was also evidenced. Trapping HOCl partly inhibits the reaction, whereas adding methylglucoside, a cellulose model compound, inhibits the reversibility of the reaction to TEMPO.
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Affiliation(s)
- Laura Giraldo Isaza
- Institute of Engineering, University Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France
| | - Gérard Mortha
- Institute of Engineering, University Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France
| | - Nathalie Marlin
- Institute of Engineering, University Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38000 Grenoble, France
| | - Florian Molton
- Department of Molecular Chemistry, University Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
| | - Carole Duboc
- Department of Molecular Chemistry, University Grenoble Alpes, CNRS, DCM, F-38000 Grenoble, France
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5
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Krömker V, Rota N, Locatelli C, Gusmara C, Marinoni A, Molteni D, Schmenger A, Erk RE, Moroni P. Randomized noninferiority field trial evaluating a postmilking teat dip for the prevention of naturally occurring intramammary infections. J Dairy Sci 2023; 106:6342-6352. [PMID: 37479581 DOI: 10.3168/jds.2022-22732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 03/01/2023] [Indexed: 07/23/2023]
Abstract
The aim of this study was to perform a positive-controlled field study under natural exposure conditions to test the efficacy of a newly developed chlorine dioxide-based postmilking teat disinfectant (experimental product, EX) for noninferiority compared with an already established chlorine dioxide-based teat disinfectant (positive control product, PC). After blocking by parity, approximately 200 Holstein cows in early to mid-lactation stages from a dairy farm near Padua, Italy, were randomly assigned to one of 2 groups. Over a 13-wk period between September and December 2021, the teats of cows were dipped with the EX or the PC after each milking. Milk samples were collected from individual quarters of enrolled cows for 13 wk to determine infection status. Teat condition was assessed at wk 1, 5, and 9. Mixed logistic regression was used to analyze the effect of treatment on the incidence of new intramammary infections. For the noninferiority analysis, the upper limit of the 95% confidence interval for the difference in new intramammary infection (NIMI) rate between the 2 treatments (EX - PC) had to be to the left of the critical value d (0.035) to conclude that EX was noninferior to PC in terms of the risk of NIMI. The results showed that the incidence of new infections in the quarters treated with EX (3.1%) was not different from that in the udder quarters treated with PC (2.6%). No overall difference was found between the treatments in terms of teat condition. As the upper limit of the 95% confidence interval of the NIMI rate difference was smaller than the predefined noninferiority limit, we concluded that the EX was noninferior compared with the PC.
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Affiliation(s)
- V Krömker
- Department of Veterinary and Animal Sciences, Section for Production, Nutrition and Health, Copenhagen University, 1870 Frederiksberg C, Denmark.
| | - N Rota
- Agribovis S. r. l., Meda, 20821, Italy
| | - C Locatelli
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy; Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, 26900, Lodi, Italy
| | - C Gusmara
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy; Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, 26900, Lodi, Italy
| | - A Marinoni
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy
| | - D Molteni
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy
| | - A Schmenger
- Steinbeis Research Center for Dairy Science, 32278 Kirchlengern, Germany
| | | | - P Moroni
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy; Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, 26900, Lodi, Italy; Quality Milk Production Services, Animal Health Diagnostic Center, Cornell University, Ithaca, NY 14853
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6
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Suh MJ, Simpson AMA, Mitch WA. Purified Chlorine Dioxide as an Alternative to Chlorine Disinfection to Minimize Chlorate Formation During Postharvest Produce Washing. Environ Sci Technol 2023; 57:12063-12071. [PMID: 37531609 DOI: 10.1021/acs.est.3c00056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
The washwater used to wash produce within postharvest washing facilities frequently contains high chlorine concentrations to prevent pathogen cross-contamination. To address concerns regarding the formation and uptake of chlorate (ClO3-) into produce, this study evaluated whether switching to chlorine dioxide (ClO2) could reduce chlorate concentrations within the produce. Because ClO2 exhibits lower disinfectant demand than chlorine, substantially lower concentrations can be applied. However, ClO3- can form through several pathways, particularly by reactions between ClO2 and the chlorine used to generate ClO2 via reaction with chlorite (ClO2-) or chlorine that forms when ClO2 reacts with produce. This study demonstrates that purging ClO2 from the chlorine and ClO2- mixture used for its generation through a trap containing ClO2- can scavenge chlorine, substantially reducing ClO3- concentrations in ClO2 stock solutions. Addition of low concentrations of ammonia to the produce washwater further reduced ClO3- formation by binding the chlorine produced by ClO2 reactions with produce as inactive chloramines without scavenging ClO2. While chlorate concentrations in lettuce, kale, and broccoli exceeded regulatory guidelines during treatment with chlorine, ClO3- concentrations were below regulatory guidelines for each of these vegetables when treated with ClO2 together with these two purification measures. Switching to purified ClO2 also reduced the concentrations of lipid-bound oleic acid chlorohydrins and protein-bound chlorotyrosines, which are exemplars of halogenated byproducts formed from disinfectant reactions with biomolecules within produce.
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Affiliation(s)
- Min-Jeong Suh
- Department of Civil and Environmental Engineering, Stanford University, 473 Via Ortega, Stanford, California 94305, United States
- Department of Engineering, Fred DeMatteis School of Engineering and Applied Science, Hofstra University, Hempstead, New York 11549, United States
| | - Adam M-A Simpson
- Department of Civil and Environmental Engineering, Stanford University, 473 Via Ortega, Stanford, California 94305, United States
| | - William A Mitch
- Department of Civil and Environmental Engineering, Stanford University, 473 Via Ortega, Stanford, California 94305, United States
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7
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Liu B, Liu L, Qin X, Liu Y, Yang R, Mo X, Qin C, Liang C, Yao S. Effect of Substituents on Molecular Reactivity during Lignin Oxidation by Chlorine Dioxide: A Density Functional Theory Study. Int J Mol Sci 2023; 24:11809. [PMID: 37511570 PMCID: PMC10380563 DOI: 10.3390/ijms241411809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 07/14/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Lignin is a polymer with a complex structure. It is widely present in lignocellulosic biomass, and it has a variety of functional group substituents and linkage forms. Especially during the oxidation reaction, the positioning effect of the different substituents of the benzene ring leads to differences in lignin reactivity. The position of the benzene ring branched chain with respect to methoxy is important. The study of the effect of benzene substituents on the oxidation reaction's activity is still an unfinished task. In this study, density functional theory (DFT) and the m062x/6-311+g (d) basis set were used. Differences in the processes of phenolic oxygen intermediates formed by phenolic lignin structures (with different substituents) with chlorine dioxide during the chlorine dioxide reaction were investigated. Six phenolic lignin model species with different structures were selected. Bond energies, electrostatic potentials, atomic charges, Fukui functions and double descriptors of lignin model substances and reaction energy barriers are compared. The effects of benzene ring branched chains and methoxy on the mechanism of chlorine dioxide oxidation of lignin were revealed systematically. The results showed that the substituents with shorter branched chains and strong electron-absorbing ability were more stable. Lignin is not easily susceptible to the effects of chlorine dioxide. The substituents with longer branched chains have a significant effect on the flow of electron clouds. The results demonstrate that chlorine dioxide can affect the electron arrangement around the molecule, which directly affects the electrophilic activity of the molecule. The electron-absorbing effect of methoxy leads to a low dissociation energy of the phenolic hydroxyl group. Electrophilic reagents are more likely to attack this reaction site. In addition, the stabilizing effect of methoxy on the molecular structure of lignin was also found.
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Affiliation(s)
- Baojie Liu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
| | - Lu Liu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
| | - Xin Qin
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
| | - Yi Liu
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
| | - Rui Yang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
| | - Xiaorong Mo
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
| | - Chengrong Qin
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
| | - Chen Liang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
| | - Shuangquan Yao
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China
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8
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Liu H, Zhang J, Liu J, Cao G, Xu F, Li X. Bactericidal Mechanisms of Chlorine Dioxide against Beta-Hemolytic Streptococcus CMCC 32210. Curr Issues Mol Biol 2023; 45:5132-5144. [PMID: 37367075 DOI: 10.3390/cimb45060326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/28/2023] Open
Abstract
Chlorine dioxide is a globally recognized green and efficient disinfectant. This study aims to investigate the bactericidal mechanism of chlorine dioxide using beta-hemolytic Streptococcus (BHS) CMCC 32210 as a representative strain. BHS was exposed to chlorine dioxide, the minimum bactericidal concentration (MBC) values of chlorine dioxide against BHS were determined by the checkerboard method in preparation for subsequent tests. Cell morphology was observed using electron microscopy. Protein content leakage, adenosine triphosphatase (ATPase) activity, and lipid peroxidation were determined by kits, and DNA damage was determined using agar gel electrophoresis. The concentration of chlorine dioxide during disinfection showed a linear relationship with the concentration of BHS. Scanning electron microscopy (SEM) results showed that chlorine dioxide caused significant damage to the cell walls of BHS at a concentration of 50 mg/L, but had no significant effect on Streptococcus exposed to different exposure times. Furthermore, the extracellular protein concentration increased with increasing chlorine dioxide concentration, while the total protein content remained unchanged. The activities of Na+/K+-ATPase and Ca2+/Mg2+-ATPase decreased with increasing chlorine dioxide concentration. Chlorine dioxide treatment led to significant lipid peroxidation and DNA degradation in BHS. Leakage of intracellular components indicated that chlorine dioxide damaged the cell membrane of BHS. Chlorine dioxide exposure resulted in oxidative damage to lipids and proteins, which negatively impacted the cell wall and membrane of Streptococcus. This caused increased permeability and inactivation of key enzymes (Na+/K+-ATPase and Ca2+/Mg2+-ATPase) involved in respiratory metabolism, ultimately leading to DNA degradation and bacterial death due to either content leakage or metabolic failure.
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Affiliation(s)
- Huan Liu
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jingju Zhang
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jing Liu
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guangjie Cao
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Fei Xu
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Animal Antimicrobial Resistance Surveillance, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Xiubo Li
- National Feed Drug Reference Laboratories, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Key Laboratory of Animal Antimicrobial Resistance Surveillance, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
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9
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Krüger TIM, Herzog S, Mellmann A, Kuczius T. Impact of Chlorine Dioxide on Pathogenic Waterborne Microorganisms Occurring in Dental Chair Units. Microorganisms 2023; 11:1123. [PMID: 37317097 DOI: 10.3390/microorganisms11051123] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/21/2023] [Accepted: 04/22/2023] [Indexed: 06/16/2023] Open
Abstract
Bacterial contamination is a problem in dental unit water lines with the consequence of implementing regular disinfection. In this study, the short-term impact of chlorine dioxide (ClO2) treatment was investigated on the microorganisms Legionella pneumophila and L. anisa, Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus. The environmental background was proven as an important factor regarding the tolerance to 0.4 mg/L ClO2 as saline and phosphate-buffered saline resulted in a higher bacterial reduction than tap water. Gram-positive microorganisms demonstrated higher robustness to ClO2 than Gram-negative, and microorganisms adapted to tap water showed increased stability compared to cultured cells. At high densities, substantial numbers of bacteria were able to withstand disinfection, whereby the use of 4.6 mg/L ClO2 increased the inactivation rate. A massive cell decrease occurred within the first 5 minutes with subsequent plateau formation or slowed cell reduction upon further exposure. This biphasic kinetics cannot be explained by a ClO2 depletion effect alone, because the probability of bacterial subpopulations with increased tolerance should be taken into account, too. Our results prove high disinfection efficiency to microorganisms that were rather found in correlation to the level of bacterial contamination and background solutions than the chosen concentration for ClO2 treatment itself.
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Affiliation(s)
| | - Susann Herzog
- Institute of Hygiene, University Hospital Münster, Robert Koch-Straße 41, 48149 Münster, Germany
| | - Alexander Mellmann
- Institute of Hygiene, University Hospital Münster, Robert Koch-Straße 41, 48149 Münster, Germany
| | - Thorsten Kuczius
- Institute of Hygiene, University Hospital Münster, Robert Koch-Straße 41, 48149 Münster, Germany
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10
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Qi S, Zhang J, Luan X, Li J, He Z, Long J, Xu M, Li P, Chen Z, Wei J, Yan J. Chlorine Dioxide Reprograms Rhizosphere Microbial Communities to Enrich Interactions with Tobacco ( Nicotiana tabacum). Pol J Microbiol 2023; 72:47-60. [PMID: 36929894 DOI: 10.33073/pjm-2023-009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 02/10/2023] [Indexed: 03/18/2023] Open
Abstract
For decades chlorine dioxide has been used in water disinfection with excellent results. As the scope of application expands, chlorine dioxide has the potential for soil disinfection. We used amplicon sequencing and gas chromatography-mass spectrometry to compare the changes of four mixed rhizosphere microbial community samples and 12 tobacco leaf volatile samples four months after the flood irrigation with chlorine dioxide in different concentrations (0, 2, 4, 8 mg/l). Phenotypic data of 60 tobacco plants were also collected. The effects of chlorine dioxide on rhizosphere microorganisms were positively correlated with dose gradients. Bacteria responded more strongly in both community structure and metabolic pathways than fungi. Five new bacterial phyla (Firmicutes, Bacteroidota, Myxococcota, Patescibacteria, Verrucomicroboata) appeared in chlorine dioxide treatment groups, while the fungal community only appeared as one new fungal phylum (Basidomycota). Alterations in 271 predicted metabolic bacterial pathways were found. However, in the fungal community were only 10 alternations. The correlations between leaf volatile compounds and rhizosphere microorganisms under the influence of chlorine dioxide treatment could be observed based on network results. However, natural connectivity had already been declining rapidly when less than 20% of the network's nodes were removed. Therefore, the microbe-metabolite network is not stable. It might be why chlorine dioxide treatments did not significantly affect tobacco quality (p = 0.754) and phenotype (p = 0.867). As a comprehensive investigation of chlorine dioxide in agriculture, this study proves the effectiveness and safety of chlorine dioxide soil disinfection and widens the application range of chlorine dioxide.
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Affiliation(s)
- Shi Qi
- 1Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; Guangdong Engineering Research Centre for Modern Eco-Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Jili Zhang
- 2China Tobacco Guangxi Industrial Company Limited, Nanning, China
| | - Xinbo Luan
- 1Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; Guangdong Engineering Research Centre for Modern Eco-Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Junlin Li
- 3Guangxi Tobacco Baise Industrial Company Limited, Baise, China
| | - Zikang He
- 1Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; Guangdong Engineering Research Centre for Modern Eco-Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Junru Long
- 1Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; Guangdong Engineering Research Centre for Modern Eco-Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Mengyun Xu
- 1Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; Guangdong Engineering Research Centre for Modern Eco-Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Ping Li
- 1Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; Guangdong Engineering Research Centre for Modern Eco-Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Zepeng Chen
- 4China Tobacco Guangdong Industrial Company Limited, Guangzhou, China
| | - Jianyu Wei
- 2China Tobacco Guangxi Industrial Company Limited, Nanning, China
| | - Jian Yan
- 1Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; Guangdong Engineering Research Centre for Modern Eco-Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
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11
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Kazberova A, Solovov R, Orlichenia V. Phosphorylated Cotton Cellulose as a Matrix for Generating Chlorine Dioxide. Polymers (Basel) 2023; 15:polym15040967. [PMID: 36850250 PMCID: PMC9967223 DOI: 10.3390/polym15040967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/09/2023] [Accepted: 02/11/2023] [Indexed: 02/18/2023] Open
Abstract
Currently, developing disinfectant materials is of utmost importance. A significant advantage of our fabric is its reusability. The disinfectants based on a natural polymer of cellulose have been barely investigated. Our work presents a modified cellulose material, and the data obtained for the first time on the chlorine dioxide generation process when treating the material with a sodium chlorite alcohol solution. A method of applying NaClO2 onto the fabric by impregnating it with a solution sprayed by an aerosol generator is proposed. This kind of fabric is capable of withstanding multiple usages after pre-washing and rinsing. The lowest alcohols-methanol, ethanol and isopropanol-are proposed as optimal solvents. It was shown that the phosphorylated cotton cellulose fabric impregnated with this solution generates chlorine dioxide during the first 25-35 min. Neither humidity nor expedites improve the process of releasing the chlorine dioxide, but high moisture content in the air causes the complete absorption of ClO2 by microdrops and its removal from the gas environment. A promising technique for removing the excess ClO2 by the means of UV treatment is proposed: after 15 min of treating ClO2 in the gas phase, it disappears entirely. These materials could be used as disinfectants in different industries, such as food and industrial manufacturing.
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Affiliation(s)
- Anfisa Kazberova
- Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 40 Obruchev Street, 117342 Moscow, Russia
| | - Roman Solovov
- Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 40 Obruchev Street, 117342 Moscow, Russia
| | - Verbina Orlichenia
- Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 40 Obruchev Street, 117342 Moscow, Russia
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12
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Su R, Li N, Liu Z, Song X, Liu W, Gao B, Zhou W, Yue Q, Li Q. Revealing the Generation of High-Valent Cobalt Species and Chlorine Dioxide in the Co 3O 4-Activated Chlorite Process: Insight into the Proton Enhancement Effect. Environ Sci Technol 2023; 57:1882-1893. [PMID: 36607701 DOI: 10.1021/acs.est.2c04903] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A Co3O4-activated chlorite (Co3O4/chlorite) process was developed to enable the simultaneous generation of high-valent cobalt species [Co(IV)] and ClO2 for efficient oxidation of organic contaminants. The formation of Co(IV) in the Co3O4/chlorite process was demonstrated through phenylmethyl sulfoxide (PMSO) probe and 18O-isotope-labeling tests. Both experiments and theoretical calculations revealed that chlorite activation involved oxygen atom transfer (OAT) during Co(IV) formation and proton-coupled electron transfer (PCET) in the Co(IV)-mediated ClO2 generation. Protons not only promoted the generation of Co(IV) and ClO2 by lowering the energy barrier but also strengthened the resistance of the Co3O4/chlorite process to coexisting anions, which we termed a proton enhancement effect. Although both Co(IV) and ClO2 exhibited direct oxidation of contaminants, their contributions varied with pH changes. When pH increased from 3 to 5, the deprotonation of contaminants facilitated the electrophilic attack of ClO2, while as pH increased from 5 to 8, Co(IV) gradually became the main contributor to contaminant degradation owing to its higher stability than ClO2. Moreover, ClO2- was transformed into nontoxic Cl- rather than ClO3- after the reaction, thus greatly reducing possible environmental risks. This work described a Co(IV)-involved chlorite activation process for efficient removal of organic contaminants, and a proton enhancement mechanism was revealed.
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Affiliation(s)
- Ruidian Su
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong266237, P. R. China
| | - Nan Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong266237, P. R. China
- School of Information Science and Engineering, Shandong University, Qingdao, Shandong266237, P. R. China
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong266237, P. R. China
| | - Xiaoyang Song
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong266237, P. R. China
| | - Wen Liu
- College of Environmental Sciences and Engineering, State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems, Peking University, Beijing100871, P. R. China
| | - Baoyu Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong266237, P. R. China
| | - Weizhi Zhou
- School of Civil Engineering, Shandong University, Jinan, Shandong250100, P. R. China
| | - Qinyan Yue
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong266237, P. R. China
| | - Qian Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong266237, P. R. China
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13
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Weng S, Zhang G, Hu Y, Bo C, Song F, Feng G, Hu L, Zhou Y, Jia P. Lignin Degradation via Chlorine Dioxide at Room Temperature: Chemical Groups and Structural Characterization. Int J Mol Sci 2023; 24:ijms24021479. [PMID: 36674995 PMCID: PMC9863994 DOI: 10.3390/ijms24021479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/27/2022] [Accepted: 12/31/2022] [Indexed: 01/13/2023] Open
Abstract
Lignin degradation is an effective means of achieving the high-value application of lignin, but degradation usually requires the use of high temperatures and harsh reaction-conditions. This study describes a green, mild approach for the degradation of lignin, in which chlorine dioxide (ClO2) was used for the oxidative degradation of lignin (IL) in an acidic aqueous suspension at room temperature. The optimal process conditions were: 30 mL of ClO2 solution (2.5 mg·L-1), pH 4.5 and 3 h. The FT-IR, NMR (1H NMR, 2D-HSQC and 31P NMR), XPS and GPC analyses indicated that lignin could be degraded by ClO2 relatively well at room temperature, to form quinones and muconic acids. Additionally, DIL was reduced to substances with a high phenolic-hydroxyl (OH) content (RDIL) under the presence of NaBH4, which further confirmed the composition of DIL and which can be applied to the development of lignin-based phenolic resins, providing a reference for the further modification as well as the utilization of DIL.
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Affiliation(s)
- Shuxian Weng
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing 210042, China
| | - Guixin Zhang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing 210042, China
| | - Yun Hu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing 210042, China
| | - Caiying Bo
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing 210042, China
| | - Fei Song
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Guodong Feng
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing 210042, China
| | - Lihong Hu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing 210042, China
- Correspondence:
| | - Yonghong Zhou
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing 210042, China
| | - Puyou Jia
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Key Laboratory of Biomass Energy and Materials, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry (CAF), Nanjing 210042, China
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14
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Su H, Chen Z, Zhao Y, An J, Huang H, Liu R, Huang C. Polyvinyl alcohol film with chlorine dioxide microcapsules can be used for blueberry preservation by slow-release of chlorine dioxide gas. Front Nutr 2023; 10:1177950. [PMID: 37143474 PMCID: PMC10151673 DOI: 10.3389/fnut.2023.1177950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 03/27/2023] [Indexed: 05/06/2023] Open
Abstract
Introduction Chlorine dioxide (ClO2) is a safe and efficient bactericide with unique advantages in reducing foodborne illnesses, inhibiting microbial growth, and maintaining the nutritional quality of food. However, gaseous ClO2 is sensitive to heat, vibration, and light, which limits its application. Methods In this study, a ClO2 precursor-stabilized ClO2 aqueous solution was encapsulated by the double emulsion method, and a high-performance ClO2 self-releasing polyvinyl alcohol (PVA) film was prepared to investigate its performance and effect on blueberry quality during storage. Results The self-releasing films had the best overall performance when the microcapsule content was 10% as the film's mechanical properties, thermal stability, and film barrier properties were significantly improved. The inhibition rates of Listeria monocytogenes and Escherichia coli were 93.69% and 95.55%, respectively, and the mycelial growth of Staphylococcus griseus was successfully inhibited. The resulting ClO2 self-releasing films were used for blueberry preservation, and an experimental study found that the ClO2 self-releasing antimicrobial film group delayed the quality decline of blueberries. During the 14-day storage period, no mold contamination was observed in the ClO2 self-releasing film group, and blueberries in the antibacterial film group had higher anthocyanin accumulation during the storage period. Discussion Research analysis showed that films containing ClO2 microcapsules are promising materials for future fruit and vegetable packaging.
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Affiliation(s)
- Hongxia Su
- School of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Zhanpeng Chen
- School of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Yuan Zhao
- School of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Jiejie An
- School of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Haohe Huang
- School of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Ren Liu
- School of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Chongxing Huang
- School of Light Industry and Food Engineering, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution Control, Nanning, China
- *Correspondence: Chongxing Huang
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15
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Albaharna H, Almubiereek H, Almualim M, Bukhamsin R, Abdelfattah A, Buohliqah L. Efficacy of chlorin dioxide wipes in disinfecting airway devices contaminated with Covid-19. Front Cell Infect Microbiol 2023; 13:1061647. [PMID: 37033491 PMCID: PMC10075250 DOI: 10.3389/fcimb.2023.1061647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 03/07/2023] [Indexed: 04/11/2023] Open
Abstract
Background Reprocessing and disinfecting endoscopes is a routine practice in otolaryngology. An effective, safe, and rapid disinfection technique is essential during the COVID-19 pandemic. Objective To validate the efficacy of chlorine dioxide wipes in disinfecting three types of airway endoscopes contaminated with COVID-19-positive patient secretions. Methods Chlorine dioxide wipes were tested on rigid nasal endoscopes, laryngoscope blades, and flexible bronchoscopes. The endoscopes were disinfected using the wipes after exposure to COVID-19-positive patients. The tested scope was included in the study if the post procedure pre disinfection swab was positive for COVID-19 virus using RT-PCR. We analyzed 38 samples for 19 subjects (scopes) pre and post disinfection with chlorine dioxide wipes from July 2021 to February 2022. Results A total of four rigid endoscopes, four flexible bronchoscopes, and four laryngoscopes were included in the study which represent 24 pre and post disinfection swabs. The others were excluded because of negative pre disinfection swab. All the post disinfection PCR swab results were negative. Conclusion Chlorine dioxide is a convenient, fast, and effective disinfection technique for COVID-19-contaminated airway endoscopes.
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Affiliation(s)
- Hussain Albaharna
- Department of Otolaryngology – Head & Neck Surgery, Qatif Central Hospital, Qatif, Saudi Arabia
- *Correspondence: Hussain Albaharna,
| | - Hassan Almubiereek
- Department of Otolaryngology – Head & Neck Surgery, Qatif Central Hospital, Qatif, Saudi Arabia
| | - Mohammed Almualim
- Intensive Care Department, Dr. Sulaiman Alhabib Hospital/Khobar/Qatif, Khobar, Saudi Arabia
| | - Rehab Bukhamsin
- Hematopathology Department, Dammam Regional Lab and Blood Bank, Dammam, Saudi Arabia
| | - Ahmed Abdelfattah
- Molecular Department, Dammam Regional Lab and Blood Bank, Dammam, Saudi Arabia
| | - Lamia Buohliqah
- Department of Otolaryngology – Head & Neck Surgery, Qatif Central Hospital, Qatif, Saudi Arabia
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16
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Andrés CMC, Lastra JMP, Andrés Juan C, Plou FJ, Pérez-Lebeña E. Chlorine Dioxide: Friend or Foe for Cell Biomolecules? A Chemical Approach. Int J Mol Sci 2022; 23. [PMID: 36555303 DOI: 10.3390/ijms232415660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/28/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
This review examines the role of chlorine dioxide (ClO2) on inorganic compounds and cell biomolecules. As a disinfectant also present in drinking water, ClO2 helps to destroy bacteria, viruses, and some parasites. The Environmental Protection Agency EPA regulates the maximum concentration of chlorine dioxide in drinking water to be no more than 0.8 ppm. In any case, human consumption must be strictly regulated since, given its highly reactive nature, it can react with and oxidize many of the inorganic compounds found in natural waters. Simultaneously, chlorine dioxide reacts with natural organic matter in water, including humic and fulvic acids, forming oxidized organic compounds such as aldehydes and carboxylic acids, and rapidly oxidizes phenolic compounds, amines, amino acids, peptides, and proteins, as well as the nicotinamide adenine dinucleotide NADH, responsible for electron and proton exchange and energy production in all cells. The influence of ClO2 on biomolecules is derived from its interference with redox processes, modifying the electrochemical balances in mitochondrial and cell membranes. This discourages its use on an individual basis and without specialized monitoring by health professionals.
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17
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Muacevic A, Adler JR, Zárate-Yuyes FM, Fernández-Rodríguez LJ, Bardales-Zuta VH. Use of Ivermectin and Chlorine Dioxide for COVID-19 Treatment and Prophylaxis in Peru: A Narrative Review. Cureus 2022; 14:e31836. [PMID: 36579243 PMCID: PMC9788901 DOI: 10.7759/cureus.31836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/22/2022] [Indexed: 11/25/2022] Open
Abstract
The spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19, created a rapidly unfolding health crisis, especially in the initial phases of the pandemic. In the early stages of the pandemic, various strategies were proposed for COVID-19 prophylaxis and treatment with very little scientific evidence available. Among these proposed treatments were ivermectin and chlorine dioxide, which were both used widely in Peru for both disease prevention and treatment without considering their problematic side effects. For instance, ivermectin was part of an approved therapeutic scheme based on in vitro data, although its efficacy in humans was not demonstrated. In addition, chlorine dioxide was never shown to be effective but causes threatening side effects. In this article, we discuss current information regarding chlorine dioxide and ivermectin in the context of the COVID-19 pandemic, with a focus on experiences in Peru.
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18
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Liu Y, Deng B, Liang J, Li J, Liu B, Wang F, Qin C, Yao S. Effects of the Preferential Oxidation of Phenolic Lignin Using Chlorine Dioxide on Pulp Bleaching Efficiency. Int J Mol Sci 2022; 23:13310. [PMID: 36362097 PMCID: PMC9654181 DOI: 10.3390/ijms232113310] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/27/2022] [Accepted: 10/29/2022] [Indexed: 07/30/2023] Open
Abstract
Chlorine dioxide is widely used for pulp bleaching because of its high delignification selectivity. However, efficient and clean chlorine dioxide bleaching is limited by the complexity of the lignin structure. Herein, the oxidation reactions of phenolic (vanillyl alcohol) and non-phenolic (veratryl alcohol) lignin model species were modulated using chlorine dioxide. The effects of chlorine dioxide concentration, reaction temperature, and reaction time on the consumption rate of the model species were also investigated. The optimal consumption rate for the phenolic species was obtained at a chlorine dioxide concentration of 30 mmol·L-1, a reaction temperature of 40 °C, and a reaction time of 10 min, resulting in the consumption of 96.3% of vanillyl alcohol. Its consumption remained essentially unchanged compared with that of traditional chlorine dioxide oxidation. However, the consumption rate of veratryl alcohol was significantly reduced from 78.0% to 17.3%. Additionally, the production of chlorobenzene via the chlorine dioxide oxidation of veratryl alcohol was inhibited. The structural changes in lignin before and after different treatments were analyzed. The overall structure of lignin remained stable during the optimization of the chlorine dioxide oxidation treatment. The signal intensities of several phenolic units were reduced. The effects of the selective oxidation of lignin by chlorine dioxide on the pulp properties were analyzed. Pulp viscosity significantly increased owing to the preferential oxidation of phenolic lignin by chlorine dioxide. The pollution load of bleached effluent was considerably reduced at similar pulp brightness levels. This study provides a new approach to chlorine dioxide bleaching. An efficient and clean bleaching process of the pulp was developed.
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Huang Z, Qin X, Zhu T, Yu X, Liu M, Nong G, Yang Q, Wang S. Developing an Efficient Processing System Treatment for the High Concentration of Eucalyptus Chemical Mechanical Pulp Wastewater. Molecules 2022; 27. [PMID: 36144510 DOI: 10.3390/molecules27185774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/09/2022] [Accepted: 08/29/2022] [Indexed: 01/05/2023]
Abstract
The current wastewater treatment method shows low efficiency in treating wastewater with high concentrations of chemical mechanical pulp (CMP). Therefore, a chlorine dioxide Pretreatment Anaerobic Treatment (DPAT) was developed and applied to treat the CMP wastewater to obtain higher efficiency, obtaining the following results: The biodegradability of CMP wastewater improved after chlorine dioxide pretreatment. The COD of wastewater treated with chlorine dioxide was reduced from 5634 mg/L to 660 mg/L. The removal rate for chemical oxygen demand (COD) was 88.29%, 29.13% higher than the common anaerobic treatment. The reasons for the high efficiency of the DPAT treatment were that chlorine dioxide pretreatment removed the toxic substances in the original wastewater and thereby promoted the proliferation and growth of the anaerobe. The results show that pretreatment with chlorine dioxide can effectively enhance the biodegradability of high-concentration CMP wastewater. Therefore, DPAT treatment of high-concentration CMP wastewater is beneficial to environmental protection.
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20
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Totaro M, Badalucco F, Papini F, Grassi N, Mannocci M, Baggiani M, Tuvo B, Casini B, Menchini Fabris GB, Baggiani A. Effectiveness of a Water Disinfection Method Based on Osmosis and Chlorine Dioxide for the Prevention of Microbial Contamination in Dental Practices. Int J Environ Res Public Health 2022; 19:10562. [PMID: 36078275 PMCID: PMC9518534 DOI: 10.3390/ijerph191710562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/17/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
In dental clinics, the infections may be acquired through contaminated devices, air, and water. Aerosolized water may contain bacteria, grown into the biofilm of dental unit waterlines (DUWLs). We evaluated a disinfection method based on water osmosis and chlorination with chlorine dioxide (O-CD), applied to DUWL of five dental clinics. Municipal water was chlorinated with O-CD device before feeding all DUWLs. Samplings were performed on water/air samples in order to research total microbial counts at 22-37 °C, Pseudomonas aeruginosa, Legionella spp., and chlorine values. Water was collected from the taps, spittoons, and air/water syringes. Air was sampled before, during, and after 15 min of aerosolizing procedure. Legionella and P. aeruginosa resulted as absent in all water samples, which presented total microbial counts almost always at 0 CFU/mL. Mean values of total chlorine ranged from 0.18-0.23 mg/L. Air samples resulted as free from Legionella spp. and Pseudomonas aeruginosa. Total microbial counts decreased from the pre-aerosolizing (mean 2.1 × 102 CFU/m3) to the post-aerosolizing samples (mean 1.5 × 10 CFU/m3), while chlorine values increased from 0 to 0.06 mg/L. O-CD resulted as effective against the biofilm formation in DUWLs. The presence of residual activity of chlorine dioxide also allowed the bacteria reduction from air, at least at one meter from the aerosolizing source.
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Affiliation(s)
- Michele Totaro
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
| | - Federica Badalucco
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
| | - Francesca Papini
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
| | - Niccolò Grassi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
| | - Marina Mannocci
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
| | | | - Benedetta Tuvo
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
| | - Beatrice Casini
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
| | | | - Angelo Baggiani
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy
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21
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Travis BJ, Elste J, Gao F, Joo BY, Cuevas‐Nunez M, Kohlmeir E, Tiwari V, Mitchell JC. Significance of chlorine-dioxide-based oral rinses in preventing SARS-CoV-2 cell entry. Oral Dis 2022; 28 Suppl 2:2481-2491. [PMID: 35841377 PMCID: PMC9349900 DOI: 10.1111/odi.14319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 06/08/2022] [Accepted: 07/01/2022] [Indexed: 12/30/2022]
Abstract
OBJECTIVE This work aims to determine the efficacy of preprocedural oral rinsing with chlorine dioxide solutions to minimize the risk of coronavirus disease 2019 (COVID-19) transmission during high-risk dental procedures. METHODS The antiviral activity of chlorine-dioxide-based oral rinse (OR) solutions was tested by pre-incubating with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pseudovirus in a dosage-dependent manner before transducing to human embryonic kidney epithelial (HEK293T-ACE2) cells, which stably expresses ACE-2 receptor. Viral entry was determined by measuring luciferase activity using a luminescence microplate reader. In the cell-to-cell fusion assay, effector Chinese hamster ovary (CHO-K1) cells co-expressing spike glycoprotein of SARS-CoV-2 and T7 RNA polymerase were pre-incubated with the ORs before co-culturing with the target CHO-K1 cells co-expressing human ACE2 receptor and luciferase gene. The luciferase signal was quantified 24 h after mixing the cells. Surface expression of SARS-CoV-2 spike glycoprotein and ACE-2 receptor was confirmed using direct fluorescent imaging and quantitative cell-ELISA. Finally, dosage-dependent cytotoxic effects of ORs were evaluated at two different time points. RESULTS A dosage-dependent antiviral effect of the ORs was observed against SARS-CoV-2 cell entry and spike glycoprotein mediated cell-to-cell fusion. This demonstrates that ORs can be useful as a preprocedural step to reduce viral infectivity. CONCLUSIONS Chlorine-dioxide-based ORs have a potential benefit for reducing SARS-CoV-2 entry and spread.
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Affiliation(s)
- Briana Joy Travis
- College of Dental MedicineMidwestern UniversityDowners GroveIllinoisUSA
| | - James Elste
- Department of Microbiology and ImmunologyMidwestern UniversityDowners GroveIllinoisUSA
| | - Feng Gao
- College of Dental MedicineMidwestern UniversityDowners GroveIllinoisUSA
| | - Bo Young Joo
- Department of Microbiology and ImmunologyMidwestern UniversityDowners GroveIllinoisUSA
| | | | - Ellen Kohlmeir
- Core FacilityMidwestern University, IllinoisDowners GroveIllinoisUSA
| | - Vaibhav Tiwari
- Department of Microbiology and ImmunologyMidwestern UniversityDowners GroveIllinoisUSA
| | - John C. Mitchell
- College of Dental MedicineMidwestern UniversityDowners GroveIllinoisUSA
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22
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Su R, He M, Li N, Ma D, Zhou W, Gao B, Yue Q, Li Q. Visible-Light Photocatalytic Chlorite Activation Mediated by Oxygen Vacancy Abundant Nd-Doped BiVO 4 for Efficient Chlorine Dioxide Generation and Pollutant Degradation. ACS Appl Mater Interfaces 2022; 14:31920-31932. [PMID: 35811472 DOI: 10.1021/acsami.2c06011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Visible-light photocatalytic chlorite activation has emerged as an efficient oxidation process for micropollutant elimination. However, the in-depth mechanism of chlorite activation is not understood. In this study, using neodymium-doped bismuth vanadate (NdxBi1-xVO4-δ) as a model catalyst, we describe the oxygen vacancy (OV)-mediated chlorite activation process for efficient ClO2 generation and cephalexin (CPX) degradation. DFT calculations and in situ DRIFTS suggest that the OV-introduced surface -OH serves as the Brønsted acidic center for chlorite adsorption. The OV-mediated chlorite activation involves multistep reactions that surface hydroxylation and proton transfer from the surface -OH to chlorite, forming metastable chlorous acid (HClO2) and further disproportionating to ClO2. As compared with vis-photocatalysis, the vis-photocatalysis coupled with chlorite activation (vis/chlorite) technique exhibits superior performance in antibiotic degradation and achieves efficient microorganism inactivation. This work uncovers the role of OVs on chlorite activation and provides a rational strategy for designing visible-light-driven oxidation techniques in water and wastewater treatment.
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Affiliation(s)
- Ruidian Su
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Qingdao, Shandong 266237, P.R.China
| | - Maoxia He
- Environment Research Institute, Shandong University, 72 Binhai Road, Qingdao, Shandong 266237, P.R.China
| | - Nan Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Qingdao, Shandong 266237, P.R.China
| | - Defang Ma
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Qingdao, Shandong 266237, P.R.China
| | - Weizhi Zhou
- School of Civil Engineering, Shandong University, Jinan, 250100, P.R.China
| | - Baoyu Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Qingdao, Shandong 266237, P.R.China
| | - Qinyan Yue
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Qingdao, Shandong 266237, P.R.China
| | - Qian Li
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, Shandong Key Laboratory of Environmental Processes and Health, School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Qingdao, Shandong 266237, P.R.China
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23
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Kyriacou C, Robinson E, Barcroft J, Parker N, Tuomey M, Stalder C, Gould D, Al‐Memar M, Bourne T. Time-effectiveness and convenience of transvaginal ultrasound probe disinfection using ultraviolet vs chlorine dioxide multistep wipe system: prospective survey study. Ultrasound Obstet Gynecol 2022; 60:132-138. [PMID: 34919771 PMCID: PMC9414347 DOI: 10.1002/uog.24834] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/26/2021] [Accepted: 12/01/2021] [Indexed: 05/31/2023]
Abstract
OBJECTIVES To compare the efficiency, ease of use and user satisfaction of two methods of transvaginal ultrasound probe high-level disinfection: ultraviolet-C radiation (UV-C) and a chlorine dioxide multistep wipe system. METHODS This was a prospective survey study. UV-C units were introduced into a busy early pregnancy assessment service and compared with a multiwipe system for disinfection. Before seeing each patient, healthcare professionals (HCPs) measured with a stopwatch the time taken to complete a cycle of disinfection using either UV-C or chlorine dioxide multistep wipes and responded to a quick-response (QR) code-linked survey. Additional essential tasks that could be completed before seeing the next patient during probe disinfection were also documented. Using another QR code-linked survey, data on ease of use, satisfaction with the system used and preferred system were collected. The ease of use and satisfaction with the system were rated on a 0 to 10 Likert scale (0 poor, 10 excellent). A free-text section for comments was then completed. RESULTS Disinfection using UV-C (n = 331) was 60% faster than the chlorine dioxide multiwipe system (n = 332) (101 vs 250 s; P < 0.0001). A greater number of tasks were completed during probe disinfection when using UV-C, saving a further 74 s per patient (P < 0.0001). The HCPs using UV-C (n = 71) reported greater ease of use (median Likert score, 10 vs 3; P < 0.0001) and satisfaction (median Likert score, 10 vs 2; P < 0.0001) compared with those using the multiwipe system (n = 43). HCPs reported that the chlorine dioxide system was time-consuming and environmentally unfriendly, while the UV-C system was efficient and easy to use. Overall, 98% of the HCPs preferred using the UV-C system. CONCLUSIONS UV-C technology is more time-efficient and allows more essential tasks to be completed during disinfection. For a 4-h ultrasound list of 15 patients, the use of UV-C would save 55 min 45 s. HCPs found UV-C preferable and easier to use. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- C. Kyriacou
- Tommy's National Centre for Miscarriage Research, Department of Obstetrics and GynaecologyQueen Charlotte's & Chelsea Hospital, Imperial College LondonLondonUK
| | - E. Robinson
- Tommy's National Centre for Miscarriage Research, Department of Obstetrics and GynaecologyQueen Charlotte's & Chelsea Hospital, Imperial College LondonLondonUK
| | - J. Barcroft
- Tommy's National Centre for Miscarriage Research, Department of Obstetrics and GynaecologyQueen Charlotte's & Chelsea Hospital, Imperial College LondonLondonUK
| | - N. Parker
- Tommy's National Centre for Miscarriage Research, Department of Obstetrics and GynaecologyQueen Charlotte's & Chelsea Hospital, Imperial College LondonLondonUK
| | - M. Tuomey
- Tommy's National Centre for Miscarriage Research, Department of Obstetrics and GynaecologyQueen Charlotte's & Chelsea Hospital, Imperial College LondonLondonUK
| | - C. Stalder
- Tommy's National Centre for Miscarriage Research, Department of Obstetrics and GynaecologyQueen Charlotte's & Chelsea Hospital, Imperial College LondonLondonUK
| | - D. Gould
- St Mary's Hospital, Department of Obstetrics and GynaecologyImperial College LondonLondonUK
| | - M. Al‐Memar
- Tommy's National Centre for Miscarriage Research, Department of Obstetrics and GynaecologyQueen Charlotte's & Chelsea Hospital, Imperial College LondonLondonUK
| | - T. Bourne
- Tommy's National Centre for Miscarriage Research, Department of Obstetrics and GynaecologyQueen Charlotte's & Chelsea Hospital, Imperial College LondonLondonUK
- Department of Obstetrics and GynecologyUniversity Hospitals LeuvenLeuvenBelgium
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24
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Wei R, Wang X, Liu X, Guo C. Corrigendum: Chlorine Dioxide Inhibits African Swine Fever Virus by Blocking Viral Attachment and Destroying Viral Nucleic Acids and Proteins. Front Vet Sci 2022; 9:937653. [PMID: 35754529 PMCID: PMC9222332 DOI: 10.3389/fvets.2022.937653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 05/09/2022] [Indexed: 12/03/2022] Open
Affiliation(s)
- Ruiping Wei
- Guangzhou Higher Education Mega Center, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiaoying Wang
- Guangzhou Higher Education Mega Center, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Xiaohong Liu
- Guangzhou Higher Education Mega Center, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Chunhe Guo
- Guangzhou Higher Education Mega Center, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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25
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Urakawa R, Shibata T, Sogou M, Takamori K, Inoue T, Konishi K, Sakai T. The Bactericidal Effect of MA-T for Factitiously Contaminated and Used Masks. Biol Pharm Bull 2022; 45:757-762. [PMID: 35650103 DOI: 10.1248/bpb.b22-00046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Matching transformation system (MA-T), an on-demand aqueous chlorine dioxide solution, is an excellent safety disinfectant, because chlorine dioxide is not detected during storage or before use. The production of chlorine dioxide in MA-T is induced by a catalytic reaction in the presence of target microorganisms. In this study, we investigated MA-T disinfection of masks as a reuse method to eliminate mask shortages. After spraying Escherichia coli on sterilized surgical mask, samples (factitiously contaminated masks) were treated with MA-T spraying or immersion, and the bactericidal efficacy was assessed by culturing. Used surgical masks were also sprayed with MA-T or were immersed in MA-T, and then were cultured to verify the bactericidal effect. The performance of N95 masks was assessed before and after application of MA-T. After spraying with MA-T, the numbers of bacteria of factitiously contaminated masks and used masks were drastically reduced compared with control samples (not applicable and p = 0.002, respectively). After MA-T immersion, the bacterial counts of both masks (factitiously contaminated masks and used masks) were significantly reduced (both p = 0.002). Taken together, the disinfection test on factitiously contaminated with E. coli and used surgical masks showed that masks can be disinfected by MA-T spray and sterilized by immersion, respectively. The N95 mask performance test after 30 min of immersion in MA-T showed that MA-T disinfected the mask without degrading the performance of the mask. In conclusion, MA-T is useful for the reuse of masks because of its decontamination effect and safety while maintaining the function of the mask.
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Affiliation(s)
- Ryuta Urakawa
- Department of Pharmacy, Osaka University Dental Hospital.,Department of Clinical Pharmacy Research and Education, Graduate School of Pharmaceutical Sciences, Osaka University
| | - Takekatsu Shibata
- Acenet Inc.,Institute for Open and Transdisciplinary Research Initiatives, Osaka University.,Division of Advance Pharmaco-Science, Graduate School of Pharmaceutical Sciences, Osaka University
| | - Motofumi Sogou
- Office of Strategic Innovative Dentistry Professor, Graduate School of Dentistry, Osaka University
| | | | - Tsuyoshi Inoue
- Institute for Open and Transdisciplinary Research Initiatives, Osaka University.,Division of Advance Pharmaco-Science, Graduate School of Pharmaceutical Sciences, Osaka University
| | - Kiyoshi Konishi
- Institute for Open and Transdisciplinary Research Initiatives, Osaka University.,Division of Advance Pharmaco-Science, Graduate School of Pharmaceutical Sciences, Osaka University
| | - Takayoshi Sakai
- Department of Oral-Facial Disorders, Graduate School of Dentistry, Osaka University
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26
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Yue L, Li Y, Zhong M, Chai X, Zhao P, Huang R, Kang Y, Yang X. Benzoic Acid, Chlorine Dioxide, and 1-Methylcyclopropene Induce Flavonoid Metabolic Shifts in Postharvest Flowering Chinese Cabbage Revealed by High-Dimensional Analytical Data. Int J Mol Sci 2022; 23:ijms23116011. [PMID: 35682691 PMCID: PMC9180784 DOI: 10.3390/ijms23116011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 05/20/2022] [Accepted: 05/25/2022] [Indexed: 01/27/2023] Open
Abstract
Flowering Chinese cabbage (Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee) is one of the most popular vegetables in China. However, the loss of the functional ingredients in postharvest flowering Chinese cabbage during storage is still serious, owing to the unclear causes of the metabolic shifts. Herein, benzoic acid, chlorine dioxide, and 1-methylcyclopropene (1-MCP) could maintain the quality of postharvest flowering Chinese cabbage, and 1-MCP showed the best effect. Furthermore, transcript-metabolite profiling of the treatments revealed a transcript-metabolite correlation network of the flavonoid biosynthesis pathways with a range of 3 to 3662 differentially expressed genes (DEGs) and a range of 23 to 37 differentially accumulated metabolites (DAMs). Surprisingly, 1-MCP had the best effect on shelf life among the treatments, although chlorine dioxide could stimulate the expression of four critical differential genes (Bra007142, Bra008792, Bra009358, and Bra027457) involved in delaying flavonoid degradation (hesperetin, chalcone, rutin, baicalein). As a result, our findings will help to improve our understanding of the regulation of flavonoid production in relation to the quality of postharvest flowering Chinese cabbage during storage.
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Affiliation(s)
- Lingqi Yue
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China; (L.Y.); (Y.L.); (M.Z.); (X.C.); (P.Z.)
| | - Yongshen Li
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China; (L.Y.); (Y.L.); (M.Z.); (X.C.); (P.Z.)
| | - Min Zhong
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China; (L.Y.); (Y.L.); (M.Z.); (X.C.); (P.Z.)
| | - Xirong Chai
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China; (L.Y.); (Y.L.); (M.Z.); (X.C.); (P.Z.)
| | - Puyan Zhao
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China; (L.Y.); (Y.L.); (M.Z.); (X.C.); (P.Z.)
| | - Riming Huang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China;
| | - Yunyan Kang
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China; (L.Y.); (Y.L.); (M.Z.); (X.C.); (P.Z.)
- Correspondence: (Y.K.); (X.Y.); Tel.: +86-159-1582-6156 (Y.K.); +86-135-0305-1303 (X.Y.)
| | - Xian Yang
- College of Horticulture, South China Agricultural University, Guangzhou 510642, China; (L.Y.); (Y.L.); (M.Z.); (X.C.); (P.Z.)
- Correspondence: (Y.K.); (X.Y.); Tel.: +86-159-1582-6156 (Y.K.); +86-135-0305-1303 (X.Y.)
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27
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Zheng X, Li M, Tian S, Li S, Chen J, Zhang X, Wu X, Ge X, Tian J, Mu Y, Song J. Integrated Analysis of Transcriptome and Metabolome Reveals the Mechanism of Chlorine Dioxide Repressed Potato ( Solanum tuberosum L.) Tuber Sprouting. Front Plant Sci 2022; 13:887179. [PMID: 35693162 PMCID: PMC9175755 DOI: 10.3389/fpls.2022.887179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
Sprouting is an irreversible deterioration of potato quality, which not only causes loss in their commercial value but also produces harmful toxins. As a popular disinfectant, ClO2 can inhibit the sprouting of potato tubers. Using transcriptomic and metabolomic approaches to understand the repressive mechanism of ClO2 in potato sprouting is yet to be reported. Sequencing the transcriptome and metabolome of potatoes treated with ClO2 in this study revealed a total of 3,119 differentially expressed genes, with 1,247 and 1,872 genes showing down- and upregulated expression, respectively. The majority of the downregulated genes were associated with plant hormone signal transduction, whereas upregulated differential genes were associated primarily with biological processes, such as phenylpropanoid biosynthesis and the mitogen-activated protein kinase (MAPK) signaling pathway. Metabonomic assays identified a total of 932 metabolites, with 33 and 52 metabolites being down- and upregulated, respectively. Downregulated metabolites were mostly alkaloids, amino acids, and their derivatives, whereas upregulated metabolites were composed mainly of flavonoids and coumarins. Integrated transcriptomic and metabolomic analyses showed that many different metabolites were regulated by several different genes, forming a complex regulatory network. These results provide new insights for understanding the mechanism of ClO2-mediated repression of potato sprouting.
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Affiliation(s)
- Xiaoyuan Zheng
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Mei Li
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Shilong Tian
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Shouqiang Li
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Jianxin Chen
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Xuejiao Zhang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Xiaohua Wu
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Xia Ge
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Jiachun Tian
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Yuwen Mu
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
| | - Juan Song
- Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou, China
- Gansu Innovation Center of Fruit and Vegetable Storage and Processing, Lanzhou, China
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28
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Palcsó B, Kazsoki A, Herczegh A, Ghidán Á, Pinke B, Mészáros L, Zelkó R. Formulation of Chlorine-Dioxide-Releasing Nanofibers for Disinfection in Humid and CO 2-Rich Environment. Nanomaterials (Basel) 2022; 12:nano12091481. [PMID: 35564190 PMCID: PMC9104377 DOI: 10.3390/nano12091481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 11/30/2022]
Abstract
Background: Preventing infectious diseases has become particularly relevant in the past few years. Therefore, antiseptics that are harmless and insusceptible to microbial resistance mechanisms are desired in medicine and public health. In our recent work, a poly(ethylene oxide)-based nanofibrous mat loaded with sodium chlorite was formulated. Methods: We tested the chlorine dioxide production and bacterial inactivation of the fibers in a medium, modeling the parameters of human exhaled air (ca. 5% (v/v) CO2, T = 37 °C, RH > 95%). The morphology and microstructure of the fibers were investigated via scanning electron microscopy and infrared spectroscopy. Results: Smooth-surfaced, nanoscale fibers were produced. The ClO2-producing ability of the fibers decreased from 65.8 ppm/mg to 4.8 ppm/mg with the increase of the sample weight from 1 to 30 mg. The effect of CO2 concentration and exposure time was also evaluated. The antibacterial activity of the fibers was tested in a 24 h experiment. The sodium-chlorite-loaded fibers showed substantial antibacterial activity. Conclusions: Chlorine dioxide was liberated into the gas phase in the presence of CO2 and water vapor, eliminating the bacteria. Sodium-chlorite-loaded nanofibers can be sources of prolonged chlorine dioxide production and subsequent pathogen inactivation in a CO2-rich and humid environment. Based on the results, further evaluation of the possible application of the formulation in face-mask filters as medical devices is encouraged.
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Affiliation(s)
- Barnabás Palcsó
- University Pharmacy Department of Pharmacy Administration, Faculty of Pharmaceutical Sciences, Semmelweis University, Hőgyes Endre utca 7-9, H-1092 Budapest, Hungary; (B.P.); (A.K.)
| | - Adrienn Kazsoki
- University Pharmacy Department of Pharmacy Administration, Faculty of Pharmaceutical Sciences, Semmelweis University, Hőgyes Endre utca 7-9, H-1092 Budapest, Hungary; (B.P.); (A.K.)
| | - Anna Herczegh
- Department of Conservative Dentistry, Faculty of Dentistry, Semmelweis University, Szentkirályi utca 47, H-1088 Budapest, Hungary;
| | - Ágoston Ghidán
- Institute of Medical Microbiology, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary;
| | - Balázs Pinke
- Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary; (B.P.); (L.M.)
| | - László Mészáros
- Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary; (B.P.); (L.M.)
- MTA-BME Research Group for Composite Science and Technology, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Romána Zelkó
- University Pharmacy Department of Pharmacy Administration, Faculty of Pharmaceutical Sciences, Semmelweis University, Hőgyes Endre utca 7-9, H-1092 Budapest, Hungary; (B.P.); (A.K.)
- Correspondence: ; Tel.: +36-1-2170927
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29
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Chuang YH, Wu KL, Lin WC, Shi HJ. Photolysis of Chlorine Dioxide under UVA Irradiation: Radical Formation, Application in Treating Micropollutants, Formation of Disinfection Byproducts, and Toxicity under Scenarios Relevant to Potable Reuse and Drinking Water. Environ Sci Technol 2022; 56:2593-2604. [PMID: 35025487 DOI: 10.1021/acs.est.1c05707] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Conversion of potable reuse water utilities and drinking water utilities from a low-pressure UV/H2O2 (LPUV/H2O2) advanced oxidation process (AOP) to alternative AOPs in which oxidants can effectively absorb photons and rapidly generate radicals has attracted great interest. Herein, we propose a novel UVA/ClO2 AOP for different water treatment scenarios because of reduced photon absorption by the background matrix and high molar absorptivity for ClO2 at UVA wavelengths. While the photolysis of ClO2 produces •Cl + O2 or •ClO + O(3P) via distinct product channels, we determined the parameters needed to accurately model the loss of oxidants and the formation of byproducts and combined a kinetic model with experimental data to determine quantum yields (Φ). Modeling incorporating the optimized Φ simultaneously predicted oxidant loss and the formation of major products -HOCl, Cl-, and ClO3-. We also systematically investigated the removal of three contaminants exhibiting different radical reactivities, the formation of 35 regulated and unregulated halogenated disinfection byproducts (DBPs), DBP-associated toxicity, and N-acetylcysteine thiol reactivity in synthetic or authentic RO permeates/surface waters treated by different AOPs. The kinetic model developed in this study was used to optimize operating conditions to control undesired products and improve contaminant removal efficiency. The results indicate that UVA/ClO2 can outperform LPUV/H2O2 in terms of electrical energy per order of contaminant degradation, disinfection byproduct formation, and toxicity indices.
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Affiliation(s)
- Yi-Hsueh Chuang
- Institute of Environmental Engineering, National Yang Ming Chiao Tung University, 1001 University Rd., Hsinchu City 30010, Taiwan
| | - Kai-Lin Wu
- Institute of Environmental Engineering, National Yang Ming Chiao Tung University, 1001 University Rd., Hsinchu City 30010, Taiwan
| | - Wei-Chun Lin
- Institute of Environmental Engineering, National Yang Ming Chiao Tung University, 1001 University Rd., Hsinchu City 30010, Taiwan
| | - Hong-Jia Shi
- Institute of Environmental Engineering, National Yang Ming Chiao Tung University, 1001 University Rd., Hsinchu City 30010, Taiwan
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30
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Abstract
Ultraviolet (UV)-based advanced oxidation processes (AOPs) are increasingly used for the degradation of micropollutants in water and wastewater. This study reports a novel UVA/chlorine dioxide (ClO2) AOP based on the photolysis of ClO2 using energy-efficient UV radiation sources in the UVA range (e.g., UVA-LEDs). At a ClO2 dosage of 74 μM (5.0 mg L-1 as ClO2) and a UV fluence at 47.5 mJ cm-2, the UVA365/ClO2 AOP generated a spectrum of reactive species, including chlorine oxide radicals (ClO•), chlorine atoms (Cl•), hydroxyl radicals (HO•), and ozone at a concentration of ∼10-13, ∼10-15, ∼10-14, and ∼10-7 M, respectively. A kinetic model to simulate the reactive species generation in the UVA365/ClO2 AOP was established, validated against the experimental results, and used to predict the pseudo-first-order rate constants and relative contributions of different reactive species to the degradation of 19 micropollutants in the UVA365/ClO2 AOP. Compared to the well-documented UVC254/chlorine AOP, the UVA365/ClO2 AOP produced similar levels of reactive species at similar oxidant dosages but was much less pH-dependent and required much lower energy input, with much lower formation of chloro-organic byproducts and marginal formation of chlorite and chlorate.
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Affiliation(s)
- Jiadong Peng
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong
| | - Ran Yin
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong
| | - Xin Yang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Chii Shang
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong
- Hong Kong Branch of Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong
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Augustyn W, Chruściel A, Hreczuch W, Kalka J, Tarka P, Kierat W. Inactivation of Spores and Vegetative Forms of Clostridioides difficile by Chemical Biocides: Mechanisms of Biocidal Activity, Methods of Evaluation, and Environmental Aspects. Int J Environ Res Public Health 2022; 19:ijerph19020750. [PMID: 35055571 PMCID: PMC8775970 DOI: 10.3390/ijerph19020750] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/03/2022] [Accepted: 01/04/2022] [Indexed: 12/15/2022]
Abstract
Clostridioides difficile infections (CDIs) are the most common cause of acquired diseases in hospitalized patients. Effective surface disinfection, focused on the inactivation of the spores of this pathogen, is a decisive factor in reducing the number of nosocomial cases of CDI infections. An efficient disinfection procedure is the result of both the properties of the biocidal agent used and the technology of its implementation as well as a reliable, experimental methodology for assessing the activity of the biocidal active substance based on laboratory models that adequately represent real clinical conditions. This study reviews the state of knowledge regarding the properties and biochemical basis of the action mechanisms of sporicidal substances, with emphasis on chlorine dioxide (ClO2). Among the analyzed biocides, in addition to ClO2, active chlorine, hydrogen peroxide, peracetic acid, and glutaraldehyde were characterized. Due to the relatively high sporicidal effectiveness and effective control of bacterial biofilm, as well as safety in a health and environmental context, the use of ClO2 is an attractive alternative in the control of nosocomial infections of CD etiology. In terms of the methods of assessing the biocidal effectiveness, suspension and carrier standards are discussed.
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Affiliation(s)
- Weronika Augustyn
- MEXEO-Wiesław Hreczuch, Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland; (W.A.); (W.H.)
- Environmental Biotechnology Department, Silesian University of Technology, Faculty of Power and Environmental Engineering, 44-100 Gliwice, Poland;
| | - Arkadiusz Chruściel
- MEXEO-Wiesław Hreczuch, Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland; (W.A.); (W.H.)
- Correspondence:
| | - Wiesław Hreczuch
- MEXEO-Wiesław Hreczuch, Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland; (W.A.); (W.H.)
| | - Joanna Kalka
- Environmental Biotechnology Department, Silesian University of Technology, Faculty of Power and Environmental Engineering, 44-100 Gliwice, Poland;
| | - Patryk Tarka
- Department of Social Medicine and Public Health, Medical University of Warsaw, 02-007 Warszawa, Poland;
| | - Wojciech Kierat
- Department of Digital Systems, Silesian University of Technology, 44-100 Gliwice, Poland;
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Chejfec-Ciociano JM, Martínez-Herrera JP, Parra-Guerra AD, Chejfec R, Barbosa-Camacho FJ, Ibarrola-Peña JC, Cervantes-Guevara G, Cervantes-Cardona GA, Fuentes-Orozco C, Cervantes-Pérez E, García-Reyna B, González-Ojeda A. Misinformation About and Interest in Chlorine Dioxide During the COVID-19 Pandemic in Mexico Identified Using Google Trends Data: Infodemiology Study. JMIR Infodemiology 2022; 2:e29894. [PMID: 35155994 PMCID: PMC8805460 DOI: 10.2196/29894] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/01/2021] [Accepted: 12/07/2021] [Indexed: 01/06/2023]
Abstract
BACKGROUND The COVID-19 pandemic has prompted the increasing popularity of several emerging therapies or preventives that lack scientific evidence or go against medical directives. One such therapy involves the consumption of chlorine dioxide, which is commonly used in the cleaning industry and is available commercially as a mineral solution. This substance has been promoted as a preventive or treatment agent for several diseases, including SARS-CoV-2 infection. As interest in chlorine dioxide has grown since the start of the pandemic, health agencies, institutions, and organizations worldwide have tried to discourage and restrict the consumption of this substance. OBJECTIVE The aim of this study is to analyze search engine trends in Mexico to evaluate changes in public interest in chlorine dioxide since the beginning of the COVID-19 pandemic. METHODS We retrieved public query data for the Spanish equivalent of the term "chlorine dioxide" from the Google Trends platform. The location was set to Mexico, and the time frame was from March 3, 2019, to February 21, 2021. A descriptive analysis was performed. The Kruskal-Wallis and Dunn tests were used to identify significant changes in search volumes for this term between four consecutive time periods, each of 13 weeks, from March 1, 2020, to February 27, 2021. RESULTS From the start of the pandemic in Mexico (February 2020), an upward trend was observed in the number of searches compared with that in 2019. Maximum volume trends were recorded during the week of July 19-25, 2020. The search volumes declined between September and November 2020, but another peak was registered in December 2020 through February 2021, which reached a maximum value on January 10. Percentage change from the first to the fourth time periods was +312.85, -71.35, and +228.18, respectively. Pairwise comparisons using the Kruskal-Wallis and Dunn tests showed significant differences between the four periods (P<.001). CONCLUSIONS Misinformation is a public health risk because it can lower compliance with the recommended measures and encourage the use of therapies that have not been proven safe. The ingestion of chlorine dioxide presents a danger to the population, and several adverse reactions have been reported. Programs should be implemented to direct those interested in this substance to accurate medical information.
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Affiliation(s)
- Jonathan Matias Chejfec-Ciociano
- Unidad de Investigación Biomédica 02 Hospital de Especialidades del Centro Médico Nacional de Occidente Instituto Mexicano del Seguro Social Guadalajara Mexico
| | - Juan Pablo Martínez-Herrera
- Unidad de Investigación Biomédica 02 Hospital de Especialidades del Centro Médico Nacional de Occidente Instituto Mexicano del Seguro Social Guadalajara Mexico
| | - Alexa Darianna Parra-Guerra
- Unidad de Investigación Biomédica 02 Hospital de Especialidades del Centro Médico Nacional de Occidente Instituto Mexicano del Seguro Social Guadalajara Mexico
| | - Ricardo Chejfec
- Max Bell School of Public Policy McGill University Montreal, QC Canada
| | - Francisco José Barbosa-Camacho
- Unidad de Investigación Biomédica 02 Hospital de Especialidades del Centro Médico Nacional de Occidente Instituto Mexicano del Seguro Social Guadalajara Mexico
| | - Juan Carlos Ibarrola-Peña
- Unidad de Investigación Biomédica 02 Hospital de Especialidades del Centro Médico Nacional de Occidente Instituto Mexicano del Seguro Social Guadalajara Mexico
| | - Gabino Cervantes-Guevara
- Hospital Civil de Guadalajara "Fray Antonio Alcalde" Universidad de Guadalajara Guadalajara Mexico.,Departamento de Bienestar y Desarrollo Sustentable Centro Universitario del Norte Universidad de Guadalajara Colotlán Mexico
| | - Guillermo Alonso Cervantes-Cardona
- Departamento de Disciplinas Filosófico, Metodológicas e Instrumentales Centro Universitario de Ciencias de la Salud Universidad de Guadalajara Guadalajara Mexico
| | - Clotilde Fuentes-Orozco
- Unidad de Investigación Biomédica 02 Hospital de Especialidades del Centro Médico Nacional de Occidente Instituto Mexicano del Seguro Social Guadalajara Mexico
| | - Enrique Cervantes-Pérez
- Departamento de Nutriología Clínica Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán" Ciudad de Mexico Mexico
| | | | - Alejandro González-Ojeda
- Unidad de Investigación Biomédica 02 Hospital de Especialidades del Centro Médico Nacional de Occidente Instituto Mexicano del Seguro Social Guadalajara Mexico
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Zhang J, McGrath C, Chan KMK, Lam OLT. A randomised clinical trial on the effect of oral antimicrobial sprays in institutionalised elders. Gerodontology 2021; 39:391-400. [PMID: 34850428 DOI: 10.1111/ger.12609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 11/21/2021] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To compare the effectiveness of chlorine dioxide, chlorhexidine and placebo sprays in improving oral hygiene among institutionalised elders. BACKGROUND Available evidence suggests that oral sprays may be an effective alternative delivery method for plaque control; however, few studies have evaluated antimicrobial agents other than chlorhexidine. MATERIALS AND METHODS A total of 228 elders across 11 nursing homes in Hong Kong were recruited into the clinical trial. Participants were randomly allocated into one of the following groups: 0.1% pH-balanced chlorine dioxide spray, 0.2% chlorhexidine spray or sterile water spray (placebo control), once daily. Dental plaque, gingival bleeding and other clinical oral health outcomes were assessed at baseline, 3 and 6 months. Participant acceptability of the interventions was assessed at the end of the clinical trial. RESULTS Review assessments were conducted for 135 elders at 6 months. Significantly greater reductions in plaque index scores were observed with the chlorhexidine spray (0.4) and chlorine dioxide spray (0.3) than the placebo spray (0.1). While significant reductions in gingival bleeding scores were observed within the chlorhexidine (7.4), chlorine dioxide (7.5) and placebo (5.3) sprays after 6 months, change scores were not significantly different between groups. Significantly greater increases in the levels of staining were observed in the chlorhexidine spray group (-0.1) than the chlorine dioxide (0.0) and placebo spray (0.0) groups. CONCLUSION Antimicrobial sprays were shown to be effective among institutionalised elders. Chlorine dioxide spray showed equivalent effects on dental plaque and gingival bleeding relative to the chlorhexidine spray over a 6-month period.
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Affiliation(s)
- Jiaguan Zhang
- Department of Stomatology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Colman McGrath
- Periodontology and Public Health, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Karen M K Chan
- Division of Speech and Hearing Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Otto L T Lam
- George and Fay Yee Centre for Healthcare Innovation, University of Manitoba, Winnipeg, Manitoba, Canada
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Smith DJ, Scapanski A, Herges G. The fate of sodium chlorite in simulated gastric and intestinal fluids and residues of chlorate in broiler chickens after oral administration of sodium chlorite. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2021; 39:242-255. [PMID: 34732111 DOI: 10.1080/19440049.2021.1992513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The fate of sodium [36Cl]chlorite in simulated intestinal fluids and residues of chlorate in broiler chickens fed 0, 10, 100, or 1000 mg•kg-1 of dietary sodium chlorite for 7 days was determined. [36Cl]Chlorite was stable in water and simulated intestinal fluid during 6 h incubations but was rapidly degraded to chlorine dioxide, sodium chloride, and sodium chlorate in simulated gastric fluids. Addition of starch, citrate, or soybean shifted the relative proportions of chloroxyanions formed; addition of ferrous chloride caused quantitative formation of sodium chloride in gastric and intestinal fluids. [36Cl]Chlorite underwent reductive transformation when fortified into chicken serum. Residues of chlorate in broiler chickens ranged from 3.5 to 374 ng•g-1 in gizzard, were <6.8 to 126 ng•g-1 in liver and were <7.2 to 190 ng•g-1 in muscle when slaughtered with no withdrawal period. Data are presented suggesting that reductive processes govern the fate of chlorite when present in closed biological systems.
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Affiliation(s)
- David J Smith
- USDA ARS, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, Fargo, ND, USA
| | - Abigail Scapanski
- USDA ARS, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, Fargo, ND, USA
| | - Grant Herges
- USDA ARS, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, Fargo, ND, USA
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Zhong T, Zhang J, Sun X, Kou J, Zhang Z, Bai J, Ritenour MA. The Potential of Gaseous Chlorine Dioxide for the Control of Citrus Postharvest Stem-End Rot Caused by Lasiodiplodia theobromae. Plant Dis 2021; 105:3426-3432. [PMID: 33934635 DOI: 10.1094/pdis-02-20-0407-re] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The focus of this study was to develop technologies using chlorine dioxide (ClO2) gas to control postharvest stem-end rot of citrus caused by Lasiodiplodia theobromae. Mycelial growth of L. theobromae on potato dextrose agar (PDA) plugs was completely inhibited by a 24-h ClO2 exposure provided by 0.5 g of solid ClO2 generating granular mixture in a 7.7-liter sealed container. In vivo experiments were conducted on artificially inoculated Tango and naturally infected U.S. Early Pride mandarins. When ClO2 treatments were initiated 0 to 6 h after inoculation, decay development was significantly reduced as compared with the control, and higher ClO2 doses were more effective. A ClO2 treatment (using 3 g of generating mixture per 7.7-liter sealed container) administered 0 h after inoculation resulted in 17.6% Diplodia stem-end rot incidence compared with 95.6% in the control, whereas the same treatment administered 24 h after inoculation was much less effective, resulting in 63.0% incidence compared with 85.4% in the control. Diplodia stem-end rot incidence of naturally infected fruit after using 6 or 9 g of generating mixture per 24-liter sealed box was 23.8 or 25.7%, respectively, compared with 47.9% for control fruit. The ClO2 treatments had no negative effects on fruit quality characteristics including weight loss, firmness, puncture resistance, titratable acids (TAs), total soluble solids (TSSs), and rind color. Albedo pH at wounds was significantly reduced from 6.0 to 4.8 by the ClO2 treatments, whereas undamaged albedo remained at 5.8. In addition, no visible physiologic defects, such as peel browning and bleaching, were observed on ClO2-treated fruit. These results indicate that ClO2 gas has the potential to be developed as a component of an integrated citrus postharvest decay control system to minimize fruit losses.
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Affiliation(s)
- Tian Zhong
- Faculty of Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau 999078, China
- Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, U.S.A
| | - Jiuxu Zhang
- Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, U.S.A
| | - Xiuxiu Sun
- Horticultural Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Fort Pierce, FL 34945, U.S.A
| | - Jingjing Kou
- Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, U.S.A
| | - Zhike Zhang
- Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, U.S.A
| | - Jinhe Bai
- Horticultural Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Fort Pierce, FL 34945, U.S.A
| | - Mark A Ritenour
- Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, U.S.A
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Cook MA, Brooke N. Event-Based Surveillance of Poisonings and Potentially Hazardous Exposures over 12 Months of the COVID-19 Pandemic. Int J Environ Res Public Health 2021; 18:ijerph182111133. [PMID: 34769652 PMCID: PMC8583514 DOI: 10.3390/ijerph182111133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 12/24/2022]
Abstract
The COVID-19 pandemic has seen people and governments utilise an array of chemical and pharmaceutical substances in an attempt to prevent and treat COVID-19 infections. The Centre for Radiation, Chemicals and Environmental Hazards (CRCE) at Public Health England (PHE) routinely undertakes Event-Based Surveillance (EBS) to monitor public health threats and incidents related to chemicals and poisons. From April 2020, EBS functions were expanded to screen international media for potentially hazardous exposures associated with the COVID-19 pandemic. Media sources reported that poisons centres were experiencing increased enquiries associated with the use and misuse of household cleaners and alcohol-based hand sanitiser (HS). There were also media reports of people self-medicating with over-the-counter supplements and traditional or herbal remedies. Public figures who directly or indirectly facilitated misinformation were sometimes reported to be associated with changes in poisoning trends. Border closures were also believed to have been associated with increasingly toxic illicit drug supplies in Canada, and record numbers of opioid-related deaths were reported. In other countries, where the sale of alcohol was banned or limited, home-brewing and methanol-based supplies resulted in a number of fatalities. At least two chemical incidents also occurred at industrial sites in India, after sites were left unattended or were closed and reopened due to lockdown measures. Reports of poisoning identified in the international media were provided to the UK National Poisons Information Service (NPIS) and contributed to the UK COVID-19 public health response.
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Affiliation(s)
- Meghan A. Cook
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Didcot OX11 0RQ, UK;
- Global Health Security, Public Health England, London SE1 8UG, UK
- Correspondence:
| | - Nicholas Brooke
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Didcot OX11 0RQ, UK;
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Palócz O, Noszticzius Z, Kály-Kullai K, Bradley E, Csikó G. In vitro study of chlorine dioxide on porcine intestinal epithelial cell gene markers. Vet Med Sci 2021; 8:591-597. [PMID: 34672097 PMCID: PMC8959260 DOI: 10.1002/vms3.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Chlorine dioxide (ClO2 ) is an inorganic, potent biocide and is available in highly purified aqueous solution. It can be administered as an oral antiseptic in this form. OBJECTIVES Our aim is to determine the level of inflammatory markers and cytochrome genes expressed by enterocytes exposed to different concentrations of hyperpure chlorine dioxide solution. METHODS Porcine jejunal enterocyte cell (IPEC-J2) cultures were treated with the aqueous solution of hyper-pure chlorine dioxide of various concentrations. We determined the alterations in mRNA levels of inflammatory mediators, such as IL6, CXCL8/IL8, TNF, HSPA6 (Hsp70), CAT and PTGS2 (COX2); furthermore, the expression of three cytochrome genes (CYP1A1, CYP1A2, CYP3A29) were analysed by quantitative PCR method. RESULTS The highest applied ClO2 concentration reduced the expression of all three investigated CYP genes. The gene expression of PTGS2 and CAT were not altered by most concentrations of ClO2 . The expression of IL8 gene was reduced by all applied concentrations of ClO2 . TNF mRNA level was also decreased by most ClO2 concentrations used. CONCLUSIONS Different concentrations of chlorine dioxide exhibited immunomodulatory activity and caused altered transcription of CYP450 genes in porcine enterocytes. Further studies are needed to determine the appropriate ClO2 concentration for oral use in animals.
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Affiliation(s)
- Orsolya Palócz
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, Budapest, Hungary
| | - Zoltán Noszticzius
- Department of Physics, Faculty of Natural Sciences, Budapest University of Technology and Economics, Budapest, Hungary
| | - Kristóf Kály-Kullai
- Department of Physics, Faculty of Natural Sciences, Budapest University of Technology and Economics, Budapest, Hungary
| | - Emma Bradley
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, Budapest, Hungary
| | - György Csikó
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, Budapest, Hungary
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Lezina OM, Subbotina SN, Frolova LL, Rubtsova SA, Sudarikov DV. Synthesis and Oxidative Transformations of New Chiral Pinane-Type γ-Ketothiols: Stereochemical Features of Reactions. Molecules 2021; 26:5245. [PMID: 34500679 DOI: 10.3390/molecules26175245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 12/01/2022] Open
Abstract
Chiral γ-ketothiols, thioacetates, thiobenzoate, disulfides, sulfones, thiosulfonates, and sulfonic acids were obtained from β-pinene for the first time. New compounds open up prospects for the synthesis of other polyfunctional compounds combining a biologically active pinane fragment with various pharmacophore groups. It was shown that the syntheses of sulfanyl and sulfonyl derivatives based on 2-norpinanone are characterized by high stereoselectivity in comparison with similar reactions of pinocarvone. The conditions for the preparation of diastereomerically pure thioacetyl and thiobenzoyl derivatives based on pinocarvone, as well as for the chemoselective oxidation of γ-ketothiols with chlorine dioxide to the corresponding thiolsulfonates and sulfonic acids, were selected. The effect of the VO(acac)2 catalyst on the increase in the yields of thiosulfonates was shown. A new direction of the transformation of thiosulfonates with the formation of sulfones was revealed. In the case of pinocarvone-based sulfones, the configuration is inversed at the C2 atom. An epimerization scheme is proposed.
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Totaro M, Badalucco F, Costa AL, Tuvo B, Casini B, Privitera G, Menchini Fabris GB, Baggiani A. Effectiveness of Disinfection with Chlorine Dioxide on Respiratory Transmitted, Enteric, and Bloodborne Viruses: A Narrative Synthesis. Pathogens 2021; 10:pathogens10081017. [PMID: 34451481 PMCID: PMC8398083 DOI: 10.3390/pathogens10081017] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/04/2021] [Accepted: 08/10/2021] [Indexed: 11/23/2022] Open
Abstract
A viral spread occurrence such as the SARS-CoV-2 pandemic has prompted the evaluation of different disinfectants suitable for a wide range of environmental matrices. Chlorine dioxide (ClO2) represents one of the most-used virucidal agents in different settings effective against both enveloped and nonenveloped viruses. This narrative synthesis is focused on the effectiveness of ClO2 applied in healthcare and community settings in order to eliminate respiratory transmitted, enteric, and bloodborne viruses. Influenza viruses were reduced by 99.9% by 0.5–1.0 mg/L of ClO2 in less than 5 min. Higher concentration (20 mg/L) eliminated SARS-CoV-2 from sewage. ClO2 concentrations from 0.2 to 1.0 mg/L ensured at least a 99% viral reduction of AD40, HAV, Coxsackie B5 virus, and other enteric viruses in less than 30 min. Considering bloodborne viruses, 30 mg/L of ClO2 can eliminate them in 5 min. Bloodborne viruses (HIV-1, HCV, and HBV) may be completely eliminated from medical devices and human fluids after a treatment with 30 mg/L of ClO2 for 30 min. In conclusion, ClO2 is a versatile virucidal agent suitable for different environmental matrices.
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Affiliation(s)
- Michele Totaro
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Federica Badalucco
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Anna Laura Costa
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Benedetta Tuvo
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Beatrice Casini
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Gaetano Privitera
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | | | - Angelo Baggiani
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
- Correspondence: ; Tel.: +50-221-3583; Fax: +50-221-3588
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Wason S, Verma T, Subbiah J. Validation of process technologies for enhancing the safety of low-moisture foods: A review. Compr Rev Food Sci Food Saf 2021; 20:4950-4992. [PMID: 34323364 DOI: 10.1111/1541-4337.12800] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 06/03/2021] [Accepted: 06/10/2021] [Indexed: 01/03/2023]
Abstract
The outbreaks linked to foodborne illnesses in low-moisture foods are frequently reported due to the occurrence of pathogenic microorganisms such as Salmonella Spp. Bacillus cereus, Clostridium spp., Cronobacter sakazakii, Escherichia coli, and Staphylococcus aureus. The ability of the pathogens to withstand the dry conditions and to develop resistance to heat is regarded as the major concern for the food industry dealing with low-moisture foods. In this regard, the present review is aimed to discuss the importance and the use of novel thermal and nonthermal technologies such as radiofrequency, steam pasteurization, plasma, and gaseous technologies for decontamination of foodborne pathogens in low-moisture foods and their microbial inactivation mechanisms. The review also summarizes the various sources of contamination and the factors influencing the survival and thermal resistance of pathogenic microorganisms in low-moisture foods. The literature survey indicated that the nonthermal techniques such as CO2 , high-pressure processing, and so on, may not offer effective microbial inactivation in low-moisture foods due to their insufficient moisture content. On the other hand, gases can penetrate deep inside the commodities and pores due to their higher diffusion properties and are regarded to have an advantage over thermal and other nonthermal processes. Further research is required to evaluate newer intervention strategies and combination treatments to enhance the microbial inactivation in low-moisture foods without significantly altering their organoleptic and nutritional quality.
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Affiliation(s)
- Surabhi Wason
- Department of Food Science, University of Arkansas System Division of Agriculture, Fayetteville, Arkansas, USA
| | - Tushar Verma
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Jeyamkondan Subbiah
- Department of Food Science, University of Arkansas System Division of Agriculture, Fayetteville, Arkansas, USA.,Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
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Contreras-Soto M, Medrano-Félix J, Valdez-Torres B, Chaidez C, Castro-Del Campo N. Chlorine dioxide: an evaluation based on a microbial decay approach during mango packing process. Int J Environ Health Res 2021; 31:518-529. [PMID: 31569961 DOI: 10.1080/09603123.2019.1670785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
Mango is highly consumed worldwide; nonetheless, its consumption has been related to foodborne outbreaks. This study was performed to evaluate bacterial transference during mango postharvest management and the feasibility of adopting chlorine dioxide as first choice disinfectant in mango packinghouse. Chlorine dioxide (3 and 5 ppm) and sodium hypochlorite (100 and 200 ppm) were evaluated at different turbidity and times against Salmonella Choleraesuis and Listeria monocytogenes. Bacterial transference was higher from water to fruit than vice-versa (49.17%). Chlorine dioxide (5 ppm) achieved the highest Salmonella reductions at low turbidity reaching 2.13 Log10 at 10 min; meanwhile, Listeria was totally reduced in all conditions. Bacterial decay kinetic showed that chlorine dioxide 5 ppm was 34-fold faster than sodium hypochlorite at 200 ppm in reducing 1 Log10 of Salmonella. Chlorine dioxide reached faster bacterial inactivation decay over sodium hypochlorite; its usage is safe and meets the regulatory standards set for mango processing.
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Affiliation(s)
- Marí Contreras-Soto
- Laboratorio Nacional para la Investigación en Inocuidad Alimentaria, Centro de Investigación en Alimentación y Desarrollo, Sinaloa, Mexico
| | - José Medrano-Félix
- CONACYT-Centro de Investigación en Alimentación y Desarrollo, Sinaloa, Mexico
| | - Benigno Valdez-Torres
- Laboratorio Nacional para la Investigación en Inocuidad Alimentaria, Centro de Investigación en Alimentación y Desarrollo, Sinaloa, Mexico
| | - Cristó Chaidez
- Laboratorio Nacional para la Investigación en Inocuidad Alimentaria, Centro de Investigación en Alimentación y Desarrollo, Sinaloa, Mexico
| | - Nohelia Castro-Del Campo
- Laboratorio Nacional para la Investigación en Inocuidad Alimentaria, Centro de Investigación en Alimentación y Desarrollo, Sinaloa, Mexico
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Medina-Avitia E, Tella-Vega P, García-Estrada C. Acute kidney injury secondary to chlorine dioxide use for COVID-19 prevention. Hemodial Int 2021; 25:E40-E43. [PMID: 34085396 PMCID: PMC8239815 DOI: 10.1111/hdi.12941] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 03/17/2021] [Accepted: 05/23/2021] [Indexed: 12/01/2022]
Abstract
Chlorine dioxide has been historically used as a disinfecting agent for drinking water supplies and surfaces. Widespread use as an alternative option for prevention and treatment of COVID‐19 has emerged due to a lack of specific treatment. We present the case of a 55‐year‐old male who developed acute kidney injury and disseminated intravascular coagulation after chlorine dioxide prophylactic ingestion, with regression after therapy with hemodialysis.
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Affiliation(s)
- Ernesto Medina-Avitia
- Internal Medicine Department, General Hospital "Santiago Ramon y Cajal" ISSSTE Durango, Durango, Mexico
| | - Pamela Tella-Vega
- Department of Clinical Epidemiology Research, National Institute of Geriatrics, Mexico City, Mexico
| | - Christian García-Estrada
- Internal Medicine Department, General Hospital "Santiago Ramon y Cajal" ISSSTE Durango, Durango, Mexico
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Vargas DA, Miller MF, Woerner DR, Echeverry A. Microbial Growth Study on Pork Loins as Influenced by the Application of Different Antimicrobials. Foods 2021; 10:foods10050968. [PMID: 33925048 PMCID: PMC8145340 DOI: 10.3390/foods10050968] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/21/2021] [Accepted: 04/26/2021] [Indexed: 11/26/2022] Open
Abstract
The use of antimicrobials in the pork industry is critical in order to ensure food safety and, at the same time, extend shelf life. The objective of the study was to determine the impact of antimicrobials on indicator bacteria on pork loins under long, dark, refrigerated storage conditions. Fresh boneless pork loins (n = 36) were split in five sections and treated with antimicrobials: Water (WAT), Bovibrom 225 ppm (BB225), Bovibrom 500 ppm (BB500), Fit Fresh 3 ppm (FF3), or Washing Solution 750 ppm (WS750). Sections were stored for 1, 14, 28, and 42 days at 2–4 °C. Mesophilic and psychrotrophic aerobic bacteria (APC-M, APC-P), lactic acid bacteria (LAB-M), coliforms, and Escherichia coli were enumerated before intervention, after intervention, and at each storage time. All bacterial enumeration data were converted into log10 for statistical analysis, and the Kruskal–Wallis test was used to find statistical differences (p < 0.05). Initial counts did not differ between treatments, while, after treatment interventions, treatment WS750 did not effectively reduce counts for APC-M, APC-P, and coliforms (p < 0.01). BB500, FF3, and WS750 performed better at inhibiting the growth of indicator bacteria when compared with water until 14 days of dark storage.
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Kingsley DH, Annous BA. Evaluation of SDS and GRAS liquid disinfectants for mitigation of hepatitis A virus contamination of berries. J Appl Microbiol 2021; 131:2586-2591. [PMID: 33905582 DOI: 10.1111/jam.15123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 11/28/2022]
Abstract
AIM To evaluate generally recognized as safe (GRAS) liquid wash formulations against hepatitis A virus-contaminated strawberries and blackberries in order to identify a formulation suitable for reducing virus contamination. METHODS AND RESULTS Formulations included the surfactant sodium dodecyl sulfate (SDS; 0·5% w/v) by itself, and in combination, with lactic acid (LA; 0·5% v/v), levulinic acid (LVA; 0·5% v/v) and 3 ppm aqueous chlorine dioxide (ClO2 ). After contamination and drying overnight, the average total extracted contamination for both untreated strawberries and blackberries was 4·4 log PFU. Three successive distilled H2 O only treatments reduced total contamination by up to 1·8 log PFU for both strawberries and blackberries, while wash formulations showed significant (P ≤ 0·05) total reductions ranging from 2·1 to 2·9 log PFU. CONCLUSIONS Considering results for both berry types, the combination of ClO2 and SDS was the most effective. Overall results indicate that adding surfactant and several types of sanitizers to berry wash can enhance HAV reduction on berries. SIGNIFICANCE AND IMPACT OF THE STUDY This study indicates that industry could enhance the virologic safety of ready-to-eat berries by the combined use of surfactant and sanitizer.
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Affiliation(s)
- D H Kingsley
- U.S. Department of Agriculture, Agricultural Research Service, Residue Chemistry and Predictive Microbiology Research Unit, Delaware State University, Dover, DE, USA
| | - B A Annous
- U.S. Department of Agriculture, Agricultural Research Service, Residue Chemistry and Predictive Microbiology Research Unit, Eastern Regional Research Center, Wyndmoor, PA, USA
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Sun J, Mao Y, Cui L, Cao Y, Li Z, Ling M, Xu X, He S. Using a safe and effective fixative to improve the immunofluorescence staining of bacteria. Methods Appl Fluoresc 2021; 9. [PMID: 33853048 DOI: 10.1088/2050-6120/abf81e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/14/2021] [Indexed: 11/12/2022]
Abstract
The emerging and development of green chemistry has once again drawn the researchers' attention to eliminating the use and generation of hazardous materials. Here we report the use of a safe and effective fixative, chlorine dioxide (ClO2), instead of traditional hazardous fixatives for the cross-linking of cellular proteins to improve immunofluorescence staining of bacteria. The concentration of ClO2needed for 100% fixation is 50μg ml-1, which is much lower than that of traditional fixatives (1000-10000μg ml-1). The ClO2mediated cross-linking can preserve the integrity of bacterial cells and prevent cell loss through lysis. Meanwhile, lysozyme can permeabilize the bacterial cells, allowing the labelled antibodies to diffuse to their intracellular target molecules. By usingE. coliO157:H7/RP4 as a gram-negative bacteria model, immunofluorescence staining assays for both intracellular protein and surface polysaccharide were carried out to investigate the effect of ClO2fixation on the staining. The results demonstrated that ClO2fixation could prevent the target antigens from cracking off the bacteria without damage on the interaction between the antibodies and antigens (either for polysaccharide or protein). As a safe and effective fixative, ClO2has potential practical applications in immunofluorescence staining and fluorescencein situhybridization for single bacteria/cell analysis.
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Affiliation(s)
- Jian Sun
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Yuantian Mao
- The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Lanyu Cui
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Yongqiang Cao
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Zhao Li
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Min Ling
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
| | - Xiaoping Xu
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, People's Republic of China
| | - Shengbin He
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, Guangxi 530021, People's Republic of China
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Abstract
Maintaining microbial safety and quality of fresh fruits and vegetables are a global concern. Harmful microbes can contaminate fresh produce at any stage from farm to fork. Microbial contamination can affect the quality and shelf-life of fresh produce, and the consumption of contaminated food can cause foodborne illnesses. Additionally, there has been an increased emphasis on the freshness and appearance of fresh produce by modern consumers. Hence, disinfection methods that not only reduce microbial load but also preserve the quality of fresh produce are required. Chlorine dioxide (ClO2) has emerged as a better alternative to chlorine-based disinfectants. In this review, we discuss the efficacy of gaseous and aqueous ClO2 in inhibiting microbial growth immediately after treatment (short-term effect) versus regulating microbial growth during storage of fresh produce (long-term effect). We further elaborate upon the effects of ClO2 application on retaining or enhancing the quality of fresh produce and discuss the current understanding of the mode of action of ClO2 against microbes affecting fresh produce.
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47
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Liu X, Jiao W, Du Y, Chen Q, Su Z, Fu M. Chlorine Dioxide Controls Green Mold Caused by Penicillium digitatum in Citrus Fruits and the Mechanism Involved. J Agric Food Chem 2020; 68:13897-13905. [PMID: 33146520 DOI: 10.1021/acs.jafc.0c05288] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Green mold caused by Penicillium digitatum is the main postharvest disease in citrus fruits. The goal of this study is to evaluate the antifungal activity of chlorine dioxide (ClO2) against P. digitatum both in vivo and in vitro and to elucidate the underlying mechanism using flow cytometry and scanning electron microscopy. The results showed that 200-1800 mg/L of ClO2 significantly inhibited the incidence of green mold on kumquats, mandarins, Peru's oranges, and grapefruits caused by P. digitatum. Additionally, 200 mg/L of ClO2 significantly induced cell apoptosis of P. digitatum by increasing the fluorescence intensity of the mitochondrial membrane potential from 118 to 1225 and decreased the living cell rate from 96.8 to 6.1%. Further study demonstrated that the content of malondialdehyde and nucleic acid leakage (OD260) of P. digitatum markedly increased, and the mycelial morphology was seriously damaged with increased ClO2 concentration. These results indicated that ClO2 could inhibit fungal growth by destroying the membrane integrity of P. digitatum, and the use of ClO2 may be an alternative strategy to control green mold in postharvest citrus fruits.
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Affiliation(s)
- Xin Liu
- College of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Wenxiao Jiao
- College of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Yamin Du
- College of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Qingmin Chen
- College of Food Science and Engineering, Shandong Agricultural and Engineering University, Jinan 250100, PR China
| | - Zhengbo Su
- Shandong Food Ferment Industry Research & Design Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250013, PR China
| | - Maorun Fu
- College of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
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Luu P, Chhetri VS, Janes ME, King JM, Adhikari A. Effectiveness of Aqueous Chlorine Dioxide in Minimizing Food Safety Risk Associated with Salmonella, E. coli O157:H7, and Listeria monocytogenes on Sweet Potatoes. Foods 2020; 9:foods9091259. [PMID: 32911767 PMCID: PMC7554816 DOI: 10.3390/foods9091259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/01/2020] [Accepted: 09/05/2020] [Indexed: 11/28/2022] Open
Abstract
Sodium hypochlorite (NaOCl) is a commonly used sanitizer in the produce industry despite its limited effectiveness against contaminated human pathogens in fresh produce. Aqueous chlorine dioxide (ClO2) is an alternative sanitizer offering a greater oxidizing potency with greater efficacy in reducing a large number of microorganisms. We investigated the effect of aqueous chlorine dioxide treatment against human pathogens, Salmonella, Escherichia coli O157:H7, and Listeria monocytogenes seeded on sweet potatoes. Sweet potatoes were spot inoculated (4.2 to 5.7 log CFU/cm2) with multi-strain cocktails of Salmonella spp., E. coli O157:H7, and L. monocytogenes and treated for 10–30 min with 5 ppm aqueous ClO2 or water. Aqueous ClO2 treatment was significantly (p < 0.05) effective in reducing Salmonella with a reduction of 2.14 log CFU/cm2 within 20 min compared to 1.44 log CFU/cm2 for water treatment. Similar results were observed for L. monocytogenes with a 1.98 log CFU/cm2 reduction compared to 0.49 log CFU/cm2 reduction observed after 30 min treatment with aqueous ClO2 the water respectively. The maximum reduction in E. coli O157: H7 reached 2.1 Log CFU/cm2 after 20 min of treatment with aqueous ClO2. The level of the pathogens in ClO2 wash solutions, after the treatment, was below the detectable limit. While in the water wash solutions, the pathogens’ populations ranged from 3.47 to 4.63 log CFU/mL. Our study indicates that aqueous ClO2 is highly effective in controlling cross-contamination during postharvest washing of sweet potatoes.
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49
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Bridges DF, Lacombe A, Wu VCH. Integrity of the Escherichia coli O157:H7 Cell Wall and Membranes After Chlorine Dioxide Treatment. Front Microbiol 2020; 11:888. [PMID: 32499765 PMCID: PMC7243733 DOI: 10.3389/fmicb.2020.00888] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/16/2020] [Indexed: 11/22/2022] Open
Abstract
Treatments of wastewater and fresh produce commonly employ chlorine as an antimicrobial. However, there are increasing levels of concerns regarding the safety and antimicrobial efficacy of chlorine treatments. Numerous studies have reported the antimicrobial properties of chlorine dioxide (ClO2) treatment in a variety of applications but information regarding how ClO2 affects bacteria is limited. In the present study, a mixed-method approach utilizing both quantitative and qualitative methodologies was used to observe Escherichia coli O157:H7 membrane damage after exposure to ClO2 (2.5, 5, or 10 mg/L) for 5, 10, or 15 min. For comparison, controls of 0.1% peptone, 70% isopropanol, and 10 mg/L NaOCl were applied for 15 min. After treatment, cells were enumerated on selective media overlaid with non-selective media and simultaneously analyzed for damage using the following fluorescent probes (1) Bis-(1,3-Dibutylbarbituric Acid) trimethine oxonol (DiBAC4(3)) for membrane polarization, (2) SYTO 9/propidium iodide (LIVE/DEAD) for membrane permeability, (3) 2-(N-(7-Nitrobenz-2-oxa-1,3-diazol-4-yl)Amino)-2-Deoxyglucose (2-NBDG) for active glucose uptake, and (4) lipid peroxidation through accumulation of malondialdehyde (MDA). Bacterial log reductions after ClO2 treatment ranged from 0.2 to 5.5 and changes in relative fluorescence units after membrane permeability and glucose uptake assays were not consistent with viability, indicating membrane permeability and metabolism were not substantially altered. Depolarization was observed after NaOCl treatment, however, the polarity of cells treated with ClO2 were like those treated with water (P < 0.05). Accumulation of MDA was detected only after 10 mg/L ClO2 treatments, indicating that membrane peroxidation occurred at higher concentrations. Transmission electron microscopy imaging revealed that separation of the cell wall from the cytosol occurred after the 10 mg/L ClO2 treatment, but the cell wall itself appeared to be unbroken. These data suggest that ClO2 damage to E. coli O157:H7 is not primarily located at the cell wall and harms cells significantly different than NaOCl at comparable concentrations.
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Affiliation(s)
- David F Bridges
- Produce Safety and Microbiology Research Unit, Western Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Albany, CA, United States
| | - Alison Lacombe
- Produce Safety and Microbiology Research Unit, Western Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Albany, CA, United States
| | - Vivian C H Wu
- Produce Safety and Microbiology Research Unit, Western Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Albany, CA, United States
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50
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Smith DJ, Scapanski A. Distribution and Chemical Fate of [ 36Cl] Chlorine Dioxide Gas on Avocados, Eggs, Onions, and Sweet Potatoes. J Agric Food Chem 2020; 68:5000-5008. [PMID: 32310652 DOI: 10.1021/acs.jafc.0c01466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fate and distribution studies were conducted with [36Cl]-chlorine dioxide in avocados, eggs, onions, and sweet potatoes. Experiments utilized sealed, darkened chambers, 5 mg of 36ClO2 (g), and two-hour exposure periods. Total radioactive residues were quantitated in gas purges, tank rinses, reaction chambers, and on fractions specific to each food. Deposition of the radioactive residue was mostly a surface phenomenon; transfer of radioactivity into albumen occurred in egg, but radioactivity did not penetrate the onion tunic and only small amounts of activity were present in avocado flesh. Potato skin contained essentially all the potato radiochlorine. Regardless of the food product, nearly all radioactive residue was present in edible tissues as chloride ions; the chlorite ion was present only in egg-rinse water. Small amounts (10% or less) of radioactivity were present as chlorate ions, which would be a useful marker compound for chlorine dioxide sanitation.
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Affiliation(s)
- David J Smith
- USDA ARS, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, 1616 Albrecht Blvd., Fargo, North Dakota 58102-2765, United States
| | - Abigail Scapanski
- USDA ARS, Edward T. Schafer Agricultural Research Center, Biosciences Research Laboratory, 1616 Albrecht Blvd., Fargo, North Dakota 58102-2765, United States
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