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Sutter J, Brettschneider J, Wigdahl B, Bruggeman PJ, Krebs FC, Miller V. Non-Thermal Plasma Reduces HSV-1 Infection of and Replication in HaCaT Keratinocytes In Vitro. Int J Mol Sci 2024; 25:3839. [PMID: 38612649 PMCID: PMC11011387 DOI: 10.3390/ijms25073839] [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: 02/26/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
Herpes simplex virus type 1 (HSV-1) is a lifelong pathogen characterized by asymptomatic latent infection in the trigeminal ganglia (TG), with periodic outbreaks of cold sores caused by virus reactivation in the TG and subsequent replication in the oral mucosa. While antiviral therapies can provide relief from cold sores, they are unable to eliminate HSV-1. We provide experimental results that highlight non-thermal plasma (NTP) as a new alternative therapy for HSV-1 infection that would resolve cold sores faster and reduce the establishment of latent infection in the TG. Additionally, this study is the first to explore the use of NTP as a therapy that can both treat and prevent human viral infections. The antiviral effect of NTP was investigated using an in vitro model of HSV-1 epithelial infection that involved the application of NTP from two separate devices to cell-free HSV-1, HSV-1-infected cells, and uninfected cells. It was found that NTP reduced the infectivity of cell-free HSV-1, reduced viral replication in HSV-1-infected cells, and diminished the susceptibility of uninfected cells to HSV-1 infection. This triad of antiviral mechanisms of action suggests the potential of NTP as a therapeutic agent effective against HSV-1 infection.
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Affiliation(s)
- Julia Sutter
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA 19102, USA; (J.S.); (J.B.); (B.W.); (F.C.K.)
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
| | - Jascha Brettschneider
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA 19102, USA; (J.S.); (J.B.); (B.W.); (F.C.K.)
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
| | - Brian Wigdahl
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA 19102, USA; (J.S.); (J.B.); (B.W.); (F.C.K.)
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - Peter J. Bruggeman
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455, USA;
| | - Fred C. Krebs
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA 19102, USA; (J.S.); (J.B.); (B.W.); (F.C.K.)
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
| | - Vandana Miller
- Center for Molecular Virology and Gene Therapy, Institute for Molecular Medicine and Infectious Disease, Drexel University College of Medicine, Philadelphia, PA 19102, USA; (J.S.); (J.B.); (B.W.); (F.C.K.)
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
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Choudhury B, Lednicky JA, Loeb JC, Portugal S, Roy S. Inactivation of SARS CoV-2 on porous and nonporous surfaces by compact portable plasma reactor. Front Bioeng Biotechnol 2024; 12:1325336. [PMID: 38486867 PMCID: PMC10937532 DOI: 10.3389/fbioe.2024.1325336] [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: 10/21/2023] [Accepted: 02/05/2024] [Indexed: 03/17/2024] Open
Abstract
We report the inactivation of SARS CoV-2 and its surrogate-Human coronavirus OC43 (HCoV-OC43), on representative porous (KN95 mask material) and nonporous materials (aluminum and polycarbonate) using a Compact Portable Plasma Reactor (CPPR). The CPPR is a compact (48 cm3), lightweight, portable and scalable device that forms Dielectric Barrier Discharge which generates ozone using surrounding atmosphere as input gas, eliminating the need of source gas tanks. Iterative CPPR exposure time experiments were performed on inoculated material samples in 3 operating volumes. Minimum CPPR exposure times of 5-15 min resulted in 4-5 log reduction of SARS CoV-2 and its surrogate on representative material samples. Ozone concentration and CPPR energy requirements for virus inactivation are documented. Difference in disinfection requirements in porous and non-porous material samples is discussed along with initial scaling studies using the CPPR in 3 operating volumes. The results of this feasibility study, along with existing literature on ozone and CPPR decontamination, show the potential of the CPPR as a powerful technology to reduce fomite transmission of enveloped respiratory virus-induced infectious diseases such as COVID-19. The CPPR can overcome limitations of high temperatures, long exposure times, bulky equipment, and toxic residuals related to conventional decontamination technologies.
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Affiliation(s)
- Bhaswati Choudhury
- SurfPlasma, Inc., Gainesville, FL, United States
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
| | - John A. Lednicky
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
- Department of Environmental and Global Health, University of Florida, Gainesville, FL, United States
| | - Julia C. Loeb
- Emerging Pathogens Institute, University of Florida, Gainesville, FL, United States
- Department of Environmental and Global Health, University of Florida, Gainesville, FL, United States
| | - Sherlie Portugal
- SurfPlasma, Inc., Gainesville, FL, United States
- School of Electrical Engineering, Technological University of Panama, Panama City, Panama
| | - Subrata Roy
- SurfPlasma, Inc., Gainesville, FL, United States
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, United States
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3
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Liang R, Zhang D, Guo J, Bian S, Yang C, A L, Zhang W, Huang F. Dielectric Barrier Discharge Plasma-Assisted Preparation of Chitosan-Based Hydrogels. Int J Mol Sci 2024; 25:2418. [PMID: 38397095 PMCID: PMC10889588 DOI: 10.3390/ijms25042418] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 02/11/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
Chitosan is widely used in the production of various hydrogels due to its non-biological toxicity, good biocompatibility, and strong biodegradability. However, chitosan-based hydrogels have not been widely used in tissue engineering due to their poor mechanical strength, poor stability and high biotoxicity of cross-linking agents. As a green technology, low temperature plasma is rich in active groups that can be involved in various chemical reactions, such as replacing the components on the chitosan chain, contributing to the cross-linking of chitosan. In this study, a plasma-assisted preparation method of chitosan-based hydrogels was developed and the properties, including mechanics, water absorption, and degradation (or stability), were characterized and analyzed. It is proved that plasma treatment plays a significant role in improving the mechanical strength and stability of hydrogels.
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Affiliation(s)
- Runing Liang
- College of Science, China Agricultural University, Beijing 100083, China; (R.L.); (D.Z.); (J.G.); (C.Y.); (W.Z.)
| | - Dan Zhang
- College of Science, China Agricultural University, Beijing 100083, China; (R.L.); (D.Z.); (J.G.); (C.Y.); (W.Z.)
| | - Junwei Guo
- College of Science, China Agricultural University, Beijing 100083, China; (R.L.); (D.Z.); (J.G.); (C.Y.); (W.Z.)
| | - Shaohuang Bian
- College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (S.B.); (L.A.)
| | - Cheng Yang
- College of Science, China Agricultural University, Beijing 100083, China; (R.L.); (D.Z.); (J.G.); (C.Y.); (W.Z.)
| | - Lusi A
- College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China; (S.B.); (L.A.)
| | - Weiwei Zhang
- College of Science, China Agricultural University, Beijing 100083, China; (R.L.); (D.Z.); (J.G.); (C.Y.); (W.Z.)
| | - Feng Huang
- College of Science, China Agricultural University, Beijing 100083, China; (R.L.); (D.Z.); (J.G.); (C.Y.); (W.Z.)
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4
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Fotouhiardakani F, Destrieux A, Profili J, Laurent M, Ravichandran S, Dorairaju G, Laroche G. Investigating the Behavior of Thin-Film Formation over Time as a Function of Precursor Concentration and Gas Residence Time in Nitrogen Dielectric Barrier Discharge. Materials (Basel) 2024; 17:875. [PMID: 38399128 PMCID: PMC10890183 DOI: 10.3390/ma17040875] [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] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/22/2023] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
This study aims to establish a correlation between the fragmentation process and the growth mechanisms of a coating deposited on a fluoropolymer. Deposition was carried out using dielectric barrier discharge at atmospheric pressure, employing an oxygen-containing organic precursor in a nitrogen environment. The findings reveal that the impact of precursor concentration on the formation of specific functionalities is more significant than the influence of treatment time. The X-ray photoelectron spectroscopy (XPS) results obtained indicate a reduction in the N/O ratio on the coating's surface as the precursor concentration in the discharge increases. Fourier transform infrared spectroscopy (FTIR) analysis, conducted in the spectral range of 1500 cm-1 to 1800 cm-1, confirmed the connection between the chemical properties of plasma-deposited thin films and the concentration of organic precursors in the discharge. Furthermore, the emergence of nitrile moieties (C≡N) in the FTIR spectrum at 2160 cm-1 was noted under specific experimental conditions.
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Affiliation(s)
- Faegheh Fotouhiardakani
- Laboratoire d’Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec, QC G1V 0A6, Canada; (F.F.); (A.D.); (J.P.)
- Centre de Recherche du CHU de Québec, Hôpital St François d’Assise, 10 Rue de L’Espinay, Québec, QC G1L 3L5, Canada
| | - Alex Destrieux
- Laboratoire d’Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec, QC G1V 0A6, Canada; (F.F.); (A.D.); (J.P.)
- Centre de Recherche du CHU de Québec, Hôpital St François d’Assise, 10 Rue de L’Espinay, Québec, QC G1L 3L5, Canada
| | - Jacopo Profili
- Laboratoire d’Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec, QC G1V 0A6, Canada; (F.F.); (A.D.); (J.P.)
- Centre de Recherche du CHU de Québec, Hôpital St François d’Assise, 10 Rue de L’Espinay, Québec, QC G1L 3L5, Canada
| | - Morgane Laurent
- Saint-Gobain Research North America, 9 Goddard Rd, Northborough, MA 01532, USA (S.R.); (G.D.)
| | | | - Gowri Dorairaju
- Saint-Gobain Research North America, 9 Goddard Rd, Northborough, MA 01532, USA (S.R.); (G.D.)
| | - Gaetan Laroche
- Laboratoire d’Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Quebec, QC G1V 0A6, Canada; (F.F.); (A.D.); (J.P.)
- Centre de Recherche du CHU de Québec, Hôpital St François d’Assise, 10 Rue de L’Espinay, Québec, QC G1L 3L5, Canada
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Cheng S, Cai H, Yi M, Dong L, Yang J. Degradation Product of Sea Cucumber Polysaccharide by Dielectric Barrier Discharge Enhanced the Migration of Macrophage In Vitro. Foods 2023; 12:4079. [PMID: 38002137 PMCID: PMC10670309 DOI: 10.3390/foods12224079] [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: 10/08/2023] [Revised: 11/08/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
This study investigated the effect of dielectric barrier discharge (DBD) on sea cucumber polysaccharide (SP-2) and evaluated its anti-inflammatory properties. The SP-2 was depolymerized by applying an input voltage of 60~90 V for 3~9 min. The features of the products were examined using high-performance gel permeation chromatography, HPLC-PAD-MS, and the Fourier transform infrared (FTIR) spectrum. The anti-inflammatory properties of the product were investigated by measuring nitric oxide (NO) release, ROS accumulation, and cell migration using RAW264.7 cells (LPS-induced or not-induced). The results showed SP-2 depolymerized into homogeneous and controllable-size oligosaccharide products. The depolymerized ratio can reach 80%. The results of the measurement of reducing sugars indicate that SP-2 was cleaved from within the sugar chain. The SP-2 was deduced to have a monosaccharide sequence of GlcN-Man-Man-Man-Man-Man based on the digested fragment information. The depolymerization product restrained the release of NO and the accumulation of ROS. By testing the RAW264.7 cell scratch assay, it was found that it enhances the migration of immune cells. DBD degradation of SP-2 leads to homogeneous and controllable-size oligosaccharide products, and this technique can be used for polysaccharide structure analysis. The depolymerized product of SP-2 has an anti-inflammatory capability in vitro.
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Affiliation(s)
| | | | | | | | - Jingfeng Yang
- School of Food Science and Technology, Dalian Municipality Engineering Laboratory for Shellfish Polysaccharide, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China; (S.C.); (H.C.); (M.Y.); (L.D.)
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6
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Konchekov EM, Gusein-zade N, Burmistrov DE, Kolik LV, Dorokhov AS, Izmailov AY, Shokri B, Gudkov SV. Advancements in Plasma Agriculture: A Review of Recent Studies. Int J Mol Sci 2023; 24:15093. [PMID: 37894773 PMCID: PMC10606361 DOI: 10.3390/ijms242015093] [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: 08/31/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
This review is devoted to a topic of high interest in recent times-the use of plasma technologies in agriculture. The increased attention to these studies is primarily due to the demand for the intensification of food production and, at the same time, the request to reduce the use of pesticides. We analyzed publications, focusing on research conducted in the last 3 years, to identify the main achievements of plasma agrotechnologies and key obstacles to their widespread implementation in practice. We considered the main types of plasma sources used in this area, their advantages and limitations, which determine the areas of application. We also considered the use of plasma-activated liquids and the efficiency of their production by various types of plasma sources.
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Affiliation(s)
- Evgeny M. Konchekov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (N.G.-z.); (D.E.B.); (L.V.K.); (S.V.G.)
| | - Namik Gusein-zade
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (N.G.-z.); (D.E.B.); (L.V.K.); (S.V.G.)
| | - Dmitriy E. Burmistrov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (N.G.-z.); (D.E.B.); (L.V.K.); (S.V.G.)
| | - Leonid V. Kolik
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (N.G.-z.); (D.E.B.); (L.V.K.); (S.V.G.)
| | - Alexey S. Dorokhov
- Federal Scientific Agroengineering Center VIM, 109428 Moscow, Russia; (A.S.D.)
| | - Andrey Yu. Izmailov
- Federal Scientific Agroengineering Center VIM, 109428 Moscow, Russia; (A.S.D.)
| | - Babak Shokri
- Physics Department, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Sergey V. Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (N.G.-z.); (D.E.B.); (L.V.K.); (S.V.G.)
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Dupont V, Ognier S, Morand G, Ollivier C, Fensterbank L, Tatoulian M. Direct Amination of Benzene with Ammonia by Flow Plasma Chemistry. Chemistry 2023; 29:e202301666. [PMID: 37431686 DOI: 10.1002/chem.202301666] [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: 05/25/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/12/2023]
Abstract
Amine derivatives, including aniline and allylic amines, can be formed in a single-step process from benzene and an ammonia plasma in a microreactor. Different process parameters such as temperature, residence time, and plasma power were evaluated to improve the reaction yield and its selectivity toward aminated products and avoid hydrogenated or oligomerized products. In parallel, simulation studies of the process have been carried out to propose a global mechanism and gain a better understanding of the influence of the different process parameters. The exploration of diverse related alkenes showed that the double bonds, conjugation, and aromatization influenced the amination mechanism. Benzene was the best reactant for amination based on the lifetime of radical intermediates. Under optimized conditions, benzene was aminated in the absence of catalyst with a yield of 3.8 % and a selectivity of 49 % in various amino compounds.
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Affiliation(s)
- Victor Dupont
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Stéphanie Ognier
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Gabriel Morand
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005, Paris, France
| | - Cyril Ollivier
- Institut Parisien de Chimie Moléculaire, UMR 8232, MACO group, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Louis Fensterbank
- Institut Parisien de Chimie Moléculaire, UMR 8232, MACO group, Sorbonne Université, CNRS, 4 place Jussieu, 75005, Paris, France
| | - Michael Tatoulian
- Institut de Recherche de Chimie Paris, UMR 8247, 2PM group, Chimie ParisTech-PSL, PSL Université Paris, CNRS, 11 rue Pierre et Marie Curie, 75005, Paris, France
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Dirks T, Krewing M, Vogel K, Bandow JE. The cold atmospheric pressure plasma-generated species superoxide, singlet oxygen and atomic oxygen activate the molecular chaperone Hsp33. J R Soc Interface 2023; 20:20230300. [PMID: 37876273 PMCID: PMC10598452 DOI: 10.1098/rsif.2023.0300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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: 05/24/2023] [Accepted: 09/26/2023] [Indexed: 10/26/2023] Open
Abstract
Cold atmospheric pressure plasmas are used for surface decontamination or disinfection, e.g. in clinical settings. Protein aggregation has been shown to significantly contribute to the antibacterial mechanisms of plasma. To investigate the potential role of the redox-activated zinc-binding chaperone Hsp33 in preventing protein aggregation and thus mediating plasma resistance, we compared the plasma sensitivity of wild-type E. coli to that of an hslO deletion mutant lacking Hsp33 as well as an over-producing strain. Over-production of Hsp33 increased plasma survival rates above wild-type levels. Hsp33 was previously shown to be activated by plasma in vitro. For the PlasmaDerm source applied in dermatology, reversible activation of Hsp33 was confirmed. Thiol oxidation and Hsp33 unfolding, both crucial for Hsp33 activation, occurred during plasma treatment. After prolonged plasma exposure, however, unspecific protein oxidation was detected, the ability of Hsp33 to bind zinc ions was decreased without direct modifications of the zinc-binding motif, and the protein was inactivated. To identify chemical species of potential relevance for plasma-induced Hsp33 activation, reactive oxygen species were tested for their ability to activate Hsp33 in vitro. Superoxide, singlet oxygen and potentially atomic oxygen activate Hsp33, while no evidence was found for activation by ozone, peroxynitrite or hydroxyl radicals.
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Affiliation(s)
- Tim Dirks
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Marco Krewing
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Katharina Vogel
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
| | - Julia E. Bandow
- Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
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Bak KH, Paulsen P. Changes in Flavor and Volatile Composition of Meat and Meat Products Observed after Exposure to Atmospheric Pressure Cold Plasma (ACP). Foods 2023; 12:3295. [PMID: 37685227 PMCID: PMC10486556 DOI: 10.3390/foods12173295] [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: 07/10/2023] [Revised: 08/14/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Studies on the atmospheric pressure cold plasma (ACP) exposure of meat and meat products mainly determine microbial inactivation, lipid oxidation, and meat color. Some studies include sensory evaluation, but only a few determine the changes in volatile composition due to ACP treatment. The results of sensory evaluation are inconclusive and range from "improvement" to "off-odor". This could be due to differences in the food matrix, especially in processed foods, or different experimental settings, including inadvertent effects such as sample heating. The few studies analyzing volatile composition report changes in alcohols, esters, aldehydes, and other compounds, but not necessarily changes that are novel for meat and meat products. Most studies do not actually measure the formation of reactive species, although this is needed to determine the exact reactions taking place in the meat during ACP treatment. This is a prerequisite for an adjustment of the plasma conditions to achieve antimicrobial effects without compromising sensory quality. Likewise, such knowledge is necessary to clarify if ACP-exposed meat and products thereof require regulatory approval.
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Affiliation(s)
- Kathrine H. Bak
- Institute of Food Safety, Food Technology and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria;
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Elaissi S, Alsaif NAM. Modelling of Nonthermal Dielectric Barrier Discharge Plasma at Atmospheric Pressure and Role of Produced Reactive Species in Surface Polymer Microbial Purification. Polymers (Basel) 2023; 15:polym15051235. [PMID: 36904476 PMCID: PMC10007475 DOI: 10.3390/polym15051235] [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: 02/07/2023] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023] Open
Abstract
A nonthermal atmospheric plasma reactor was used to sterilize polymer surfaces and satisfy safety constraints in a biological medium. A 1D fluid model was developed using COMSOL Multiphysics software® 5.4 with a helium-oxygen mixture at low temperature for the decontamination of bacteria on polymer surfaces. An analysis of the evolution of the homogeneous dielectric barrier discharge (DBD) was carried out through studying the dynamic behavior of the discharge parameters including the discharge current, the consumed power, the gas gap voltage, and transport charges. In addition, the electrical characteristics of a homogeneous DBD under different operating conditions were studied. The results shown that increasing voltage or frequency caused higher ionization levels and maximum increase of metastable species' density and expanded the sterilization area. On the other hand, it was possible to operate plasma discharges at a low voltage and a high density of plasma using higher values of the secondary emission coefficient or permittivity of the dielectric barrier materials. When the discharge gas pressure increased, the current discharges declined, which indicated a lower sterilization efficiency under high pressure. A short gap width and the admixture of oxygen were needed for sufficient bio-decontamination. Plasma-based pollutant degradation devices could therefore benefit from these results.
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Florescu I, Radu I, Teodoru A, Gurau L, Chireceanu C, Bilea F, Magureanu M. Positive Effect Induced by Plasma Treatment of Seeds on the Agricultural Performance of Sunflower. Plants (Basel) 2023; 12:794. [PMID: 36840142 PMCID: PMC9966849 DOI: 10.3390/plants12040794] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
The need for efficient technologies to enhance productivity in agriculture strongly motivates research on plasma treatment of seeds and plants. In this study, the influence of plasma treatment on sunflower (Helianthus annuus L.) seeds was evidenced throughout the entire life span of the plants. The seeds were packed in a DBD reactor operated in air and treated in plasma for 10 min, using a sinusoidal voltage of 16 kV amplitude at 50 Hz frequency. Early growth observation of plants under laboratory conditions showed that, after a slower start, the plasma-treated seeds developed faster and produced taller seedlings with greater total mass as compared to the control samples. Results obtained from mature plants cultivated in the field revealed a positive effect of plasma exposure with respect to capitulum size, number of seeds per capitulum and mass per thousand seeds, resulting in a remarkable increase in crop yield. The plasma effect lasted for at least two weeks of seed storage; however, it was considerably affected by the sowing period.
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Affiliation(s)
- Ioana Florescu
- Research and Development Institute for Plant Protection, Bd. Ion Ionescu de la Brad 8, 013813 Bucharest, Romania
| | - Ioan Radu
- Research and Development Institute for Plant Protection, Bd. Ion Ionescu de la Brad 8, 013813 Bucharest, Romania
| | - Andrei Teodoru
- Research and Development Institute for Plant Protection, Bd. Ion Ionescu de la Brad 8, 013813 Bucharest, Romania
| | - Lorena Gurau
- Research and Development Institute for Plant Protection, Bd. Ion Ionescu de la Brad 8, 013813 Bucharest, Romania
| | - Constantina Chireceanu
- Research and Development Institute for Plant Protection, Bd. Ion Ionescu de la Brad 8, 013813 Bucharest, Romania
| | - Florin Bilea
- Department of Plasma Physics and Nuclear Fusion, National Institute for Lasers, Plasma and Radiation Physics, Atomistilor Str. 409, 077125 Magurele, Romania
| | - Monica Magureanu
- Department of Plasma Physics and Nuclear Fusion, National Institute for Lasers, Plasma and Radiation Physics, Atomistilor Str. 409, 077125 Magurele, Romania
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12
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Csadek I, Vankat U, Schrei J, Graf M, Bauer S, Pilz B, Schwaiger K, Smulders FJM, Paulsen P. Treatment of Ready-To-Eat Cooked Meat Products with Cold Atmospheric Plasma to Inactivate Listeria and Escherichia coli. Foods 2023; 12. [PMID: 36832760 DOI: 10.3390/foods12040685] [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: 12/22/2022] [Revised: 01/24/2023] [Accepted: 01/28/2023] [Indexed: 02/09/2023] Open
Abstract
Ready-to-eat meat products have been identified as a potential vehicle for Listeria monocytogenes. Postprocessing contamination (i.e., handling during portioning and packaging) can occur, and subsequent cold storage together with a demand for products with long shelf life can create a hazardous scenario. Good hygienic practice is augmented by intervention measures in controlling post-processing contamination. Among these interventions, the application of 'cold atmospheric plasma' (CAP) has gained interest. The reactive plasma species exert some antibacterial effect, but can also alter the food matrix. We studied the effect of CAP generated from air in a surface barrier discharge system (power densities 0.48 and 0.67 W/cm2) with an electrode-sample distance of 15 mm on sliced, cured, cooked ham and sausage (two brands each), veal pie, and calf liver pâté. Colour of samples was tested immediately before and after CAP exposure. CAP exposure for 5 min effectuated only minor colour changes (ΔE max. 2.7), due to a decrease in redness (a*), and in some cases, an increase in b*. A second set of samples was contaminated with Listeria (L.) monocytogenes, L. innocua and E. coli and then exposed to CAP for 5 min. In cooked cured meats, CAP was more effective in inactivating E. coli (1 to 3 log cycles) than Listeria (from 0.2 to max. 1.5 log cycles). In (non-cured) veal pie and calf liver pâté that had been stored 24 h after CAP exposure, numbers of E. coli were not significantly reduced. Levels of Listeria were significantly reduced in veal pie that had been stored for 24 h (at a level of ca. 0.5 log cycles), but not in calf liver pâté. Antibacterial activity differed between but also within sample types, which requires further studies.
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13
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Sun L, Tan Y, Xu H, Shu R, Liu Z, Zhang R, Hou J, Zhang R. A Novel Photocatalytic Functional Coating Applied to the Degradation of Xylene in Coating Solvents under Solar Irradiation. Nanomaterials (Basel) 2023; 13:570. [PMID: 36770531 PMCID: PMC9920615 DOI: 10.3390/nano13030570] [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: 01/08/2023] [Revised: 01/24/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
A novel photocatalytic functional coating was prepared with g-C3N4/TiO2 composites as the photocatalytic active component modified by dielectric barrier discharge (DBD), and it showed an efficient catalytic performance under solar light irradiation. The degradation of xylene released from fluorocarbon coating solvents by the g-C3N4/TiO2 composite coatings was investigated under simulated solar irradiation. The degradation efficiency of the coating mixed with DBD-modified 10%-g-C3N4/TiO2 showed a stable, long-lasting, and significantly higher activity compared to the coatings mixed with the unmodified catalyst. Ninety-eight percent of the xylene released from fluorocarbon coating solvents was successfully removed under solar light irradiation in 2 h. The properties of the catalyst samples before and after modification were evaluated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible (UV-vis) spectroscopy, X-ray photoelectron spectroscopy (XPS), and other characterization techniques. The results suggested that DBD-modified g-C3N4/TiO2 showed an improved capture ability and utilization efficiency of solar light with reduced band gap and lower complexation rate of electron-hole pairs. The prepared photocatalytic coating offers an environmentally friendly approach to purify the volatile organic compounds (VOCs) released from solvent-based coatings.
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Affiliation(s)
- Luying Sun
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Yujie Tan
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Hui Xu
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Ruchen Shu
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Zhi Liu
- Foshan Shunde District Midea Washing Appliance Manufacturing Co., Ltd., Foshan 528311, China
| | - Ruina Zhang
- Shanghai Institute for Design & Research on Environmental Engineering, Shanghai 200232, China
| | - Jianyuan Hou
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Renxi Zhang
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
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14
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Kwiatkowski M, Terebun P, Kučerová K, Tarabová B, Kovalová Z, Lavrikova A, Machala Z, Hensel K, Pawłat J. Evaluation of Selected Properties of Dielectric Barrier Discharge Plasma Jet. Materials (Basel) 2023; 16:1167. [PMID: 36770174 PMCID: PMC9918978 DOI: 10.3390/ma16031167] [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: 12/14/2022] [Revised: 01/23/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
In the technological processes requiring mild treatment, such as soft materials processing or medical applications, an important role is played by non-equilibrium plasma reactors with dielectric barrier discharge (DBD), that when generated in noble gases allows for the effective treatment of biological material at a low temperature. The aim of this study is to determine the operating parameters of an atmospheric pressure, radio-frequency DBD plasma jet reactor for the precise treatment of biological materials. The tested parameters were the shape of the discharge (its length and volume), current and voltage signals, as well as the power consumed by the reactor for various composition and flow rates of the working gas. To determine the applicability in medicine, the temperature, pH, concentrations of H2O2, NO2- and NO3- and Escherichia coli log reduction in the plasma treated liquids were determined. The obtained results show that for certain operating parameters, a narrow shape of plasma stream can generate significant amounts of H2O2, allowing for the mild decontamination of bacteria at a relatively low power of the system, safe for the treatment of biological materials.
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Affiliation(s)
- Michał Kwiatkowski
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
| | - Piotr Terebun
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
| | - Katarína Kučerová
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Barbora Tarabová
- Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, 182 00 Prague, Czech Republic
| | - Zuzana Kovalová
- Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 3, 182 00 Prague, Czech Republic
| | - Aleksandra Lavrikova
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Zdenko Machala
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Karol Hensel
- Faculty of Mathematics, Physics and Informatics, Comenius University, 842 48 Bratislava, Slovakia
| | - Joanna Pawłat
- Chair of Electrical Engineering and Electrotechnologies, Lublin University of Technology, 20-618 Lublin, Poland
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15
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Fotouhiardakani F, Laurent M, Profili J, Ravichandran S, Dorairaju G, Laroche G. Fragmentation Mechanism in a Nitrogen Dielectric Barrier Discharge Plasma on Fluoropolymer Polymer Films. Materials (Basel) 2023; 16:942. [PMID: 36769949 PMCID: PMC9917675 DOI: 10.3390/ma16030942] [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: 12/08/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
Due to their chemical inertness and low friction coefficient, fluoropolymers are today widely employed in sectors of activity as diverse and distinct as the textile industry, architectural sector, and medicine. However, their low surface energy results in poor adhesion, for example, when used for a component in a composite device with multiple other materials. Among the techniques used to enhance their adhesion, atmospheric pressure discharges provide a fast and low-cost method with a reduced environmental impact. Although this approach has proven to be efficient, the different chemical and physical processes in the discharge remain not fully understood. In this study, fluoropolymer surfaces were modified using an atmospheric pressure dielectric barrier discharge in a nitrogen and organic precursor environment. To prevent any damage to fluoropolymer surfaces, the dissipated power in the discharges was tuned by applying a duty cycle. Evidence shows that plasma treatment allows for the incorporation of oxygen and nitrogen in the surface resulting in the formation of hydrophilic functionalities such as carbonyl groups both in ketone and amide form, amine, and hydroxyl groups after 180 s of treatment. Overall, the data reveal that the discharge duty cycle has more effect on the oxygen and carbon content in the coating than the precursor concentration. In addition, increasing the precursor concentration limits the molecular fragmentation and nitrogen incorporation into the coating. These experiments enable the building of a better fundamental understanding of the formation mechanism of such chemical moieties at the fluoropolymer surface.
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Affiliation(s)
- Faegheh Fotouhiardakani
- Laboratoire d’Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec, Hôpital St François d’Assise, 10 rue de L’Espinay, Québec, QC G1L 3L5, Canada
| | - Morgane Laurent
- Saint-Gobain Research North America, 9 Goddard Rd, Northborough, MA 01532, USA
| | - Jacopo Profili
- Laboratoire d’Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec, Hôpital St François d’Assise, 10 rue de L’Espinay, Québec, QC G1L 3L5, Canada
| | | | - Gowri Dorairaju
- Saint-Gobain Research North America, 9 Goddard Rd, Northborough, MA 01532, USA
| | - Gaetan Laroche
- Laboratoire d’Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, Québec, QC G1V 0A6, Canada
- Centre de Recherche du CHU de Québec, Hôpital St François d’Assise, 10 rue de L’Espinay, Québec, QC G1L 3L5, Canada
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16
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Davies HL, Guerra V, van der Woude M, Gans T, O’Connell D, Gibson AR. Vibrational kinetics in repetitively pulsed atmospheric pressure nitrogen discharges: average-power-dependent switching behaviour. Plasma Sources Sci Technol 2023; 32:014003. [PMID: 36777326 PMCID: PMC9905790 DOI: 10.1088/1361-6595/aca9f4] [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] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 11/04/2022] [Accepted: 12/08/2022] [Indexed: 06/18/2023]
Abstract
Characterisation of the vibrational kinetics in nitrogen-based plasmas at atmospheric pressure is crucial for understanding the wider plasma chemistry, which is important for a variety of biomedical, agricultural and chemical processing applications. In this study, a 0-dimensional plasma chemical-kinetics model has been used to investigate vibrational kinetics in repetitively pulsed, atmospheric pressure plasmas operating in pure nitrogen, under application-relevant conditions (average plasma powers of 0.23-4.50 W, frequencies of 1-10 kHz, and peak pulse powers of 23-450 W). Simulations predict that vibrationally excited state production is dominated by electron-impact processes at lower average plasma powers. When the average plasma power increases beyond a certain limit, due to increased pulse frequency or peak pulse power, there is a switch in behaviour, and production of vibrationally excited states becomes dominated by vibrational energy transfer processes (vibration-vibration (V-V) and vibration-translation (V-T) reactions). At this point, the population of vibrational levels up to v ⩽ 40 increases significantly, as a result of V-V reactions causing vibrational up-pumping. At average plasma powers close to where the switching behaviour occurs, there is potential to control the energy efficiency of vibrational state production, as small increases in energy deposition result in large increases in vibrational state densities. Subsequent pathways analysis reveals that energy in the vibrational states can also influence the wider reaction chemistry through vibrational-electronic (V-E) linking reactions (N + N2 ( 40 ⩽ v ⩽ 45 ) → N( 2 D ) + N2 ( A ) and N + N2 ( 39 ⩽ v ⩽ 45 ) → N + N2 ( a ' ) ), which result in increased Penning ionisation and an increased average electron density. Overall, this study investigates the potential for delineating the processes by which electronically and vibrationally excited species are produced in nitrogen plasmas. Therefore, potential routes by which nitrogen-containing plasma sources could be tailored, both in terms of chemical composition and energy efficiency, are highlighted.
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Affiliation(s)
- Helen L Davies
- York Plasma Institute, Department of Physics, University of York, Heslington, YO10 5DD, United Kingdom
| | - Vasco Guerra
- Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Marjan van der Woude
- York Biomedical Research Institute and Hull York Medical School, University of York, Heslington, YO10 5DD, United Kingdom
| | - Timo Gans
- School of Physical Sciences, National Centre for Plasma Science and Technology, Dublin City University, Dublin 9, Ireland
| | - Deborah O’Connell
- School of Physical Sciences, National Centre for Plasma Science and Technology, Dublin City University, Dublin 9, Ireland
| | - Andrew R Gibson
- Research Group for Biomedical Plasma Technology, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
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17
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Hou X, Wen X, He J, Hou X. Fast preparation of Eu(BTB) MOFs in dielectric barrier discharge liquid plasma for luminescent sensing of trace iron. LUMINESCENCE 2022; 37:2050-2058. [PMID: 36178868 DOI: 10.1002/bio.4390] [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: 09/03/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 12/14/2022]
Abstract
Lanthanide metal-organic frameworks Eu(BTB) MOFs was synthesized in low-temperature plasma produced by dielectric barrier discharge (DBD). This DBD synthesis possesses the characteristics of rapid reaction (within 20 min), mild condition (low temperature and atmospheric pressure) and simple operation compared with many traditional synthesis methods. The prepared Eu(BTB) MOF material exhibits typical red light emitting of europium (Eu3+ ) at 617 nm, which can selectively and sensitively be quenched in the presence of trace iron(III) ion (Fe3+ ). A simple, fast and sensitive fluorescence sensing strategy of Fe3+ was thus constructed, with a limit of detection (LOD) of 0.5 μM. Compared with reported fluorescence probes, Eu(BTB) MOFs have also demonstrated the advantages of low cost, easy and fast preparation, great stability, and excellent optical properties, thus making them a promising fluorescence candidate for trace Fe3+ sensing for the potential application in biological systems in the future.
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Affiliation(s)
- Xin Hou
- College of Chemistry, Sichuan University, Chengdu, Sichuan, China
| | - Xiaohui Wen
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, China
| | - Juan He
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, China
| | - Xiandeng Hou
- College of Chemistry, Sichuan University, Chengdu, Sichuan, China.,Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, China
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18
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Xu H, Miao W, Zheng B, Deng S, Hatab S. Assessment of the Effect of Cold Atmospheric Plasma (CAP) on the Hairtail (Trichiurus lepturus) Quality under Cold Storage Conditions. Foods 2022; 11. [PMID: 36429278 DOI: 10.3390/foods11223683] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 10/07/2022] [Revised: 11/10/2022] [Accepted: 11/13/2022] [Indexed: 11/19/2022] Open
Abstract
Cold Atmospheric Plasma (CAP) is a novel non-thermal preservation method that extends the shelf-life of food. Therefore, this study investigated the effect of CAP on the quality parameters of hairtail (Trichiurus lepturus) during cold storage conditions (at 4 °C and RH range 45−55%). For that reason, different quality parameters including the total bacteria count (TBC), total volatile basic nitrogen (TVB-N), pH, thiobarbituric acid reacting substances value (TBARS), color, texture, and sensory evaluation have been measured. The hairtail was exposed to CAP at 50 kV voltage for 2, 3, 4, and 5 min. The results showed that the samples treated with CAP at 50 kV for 5 min had significantly lower (p < 0.05) TBC (7.04 ± 0.26 log CFU/g) compared with the control sample (8.69 ± 0.06 log CFU/g). Similar results were found concerning TVB-N, which strongly decreased in the treated samples (16.63 ± 0.03 mg N/100 g) in comparison with the control sample (22.79 ± 0.03 mg N/100 g). In addition, the CAP-treated samples had lower (p < 0.05) changes in color than those of the control group. With reference to the sensory evaluation, the shelf-life of CAP-treated samples (at 50 kV for 5 min) was longer than the untreated samples by about 6 days. These results led us to the conclusion that CAP can effectively delay spoilage and deterioration, slow the rise in pH, and maintain the sensory attributes of hairtail during cold storage conditions.
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19
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Uricchio A, Lasalandra T, Tamborra ERG, Caputo G, Mota RP, Fanelli F. Atmospheric Pressure Plasma-Treated Polyurethane Foam as Reusable Absorbent for Removal of Oils and Organic Solvents from Water. Materials (Basel) 2022; 15:7948. [PMID: 36431434 PMCID: PMC9693071 DOI: 10.3390/ma15227948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/04/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
This paper reports the optimization of a two-step atmospheric pressure plasma process to modify the surface properties of a polyurethane (PU) foam and, specifically, to prepare a superhydrophobic/superoleophilic absorbent for the removal of oils and nonpolar organic solvents from water. In particular, in the first step, an oxygen-containing dielectric barrier discharge (DBD) is used to induce the etching/nanotexturing of the foam surfaces; in the second step, an ethylene-containing DBD enables uniform overcoating with a low-surface-energy hydrocarbon polymer film. The combination of surface nanostructuring and low surface energy ultimately leads to simultaneous superhydrophobic and superoleophilic wetting properties. X-ray photoelectron spectroscopy, scanning electron microscopy and water contact angle measurements are used for the characterization of the samples. The plasma-treated PU foam selectively absorbs various kinds of hydrocarbon-based liquids (i.e., hydrocarbon solvents, mineral oils, motor oil, diesel and gasoline) up to 23 times its own weight, while it completely repels water. These absorption performances are maintained even after 50 absorption/desorption cycles and after immersion in hot water as well as acidic, basic and salt aqueous solutions. The plasma-treated foam can remove mineral oil while floating on the surface of mineral oil/water mixtures with a separation efficiency greater than 99%, which remains unaltered after 20 separation cycles.
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Affiliation(s)
- Antonella Uricchio
- Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
| | - Teresa Lasalandra
- Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
| | - Eliana R. G. Tamborra
- Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
| | - Gianvito Caputo
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genoa, Italy
| | - Rogério P. Mota
- Department of Physics, Faculty of Engineering and Science, São Paulo State University (UNESP), 12516-410 Guaratinguetá, SP, Brazil
| | - Fiorenza Fanelli
- Institute of Nanotechnology (NANOTEC), National Research Council (CNR), c/o Department of Chemistry, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy
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20
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Li S, Sun J, Sun R, Pan J, Wang L, Chen C, Chen Q, Liu Z. Characteristics of Radio Frequency Dielectric Barrier Discharge Using Argon Doped with Nitrogen at Atmospheric Pressure. Materials (Basel) 2022; 15:7647. [PMID: 36363237 PMCID: PMC9656361 DOI: 10.3390/ma15217647] [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: 09/27/2022] [Revised: 10/19/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
In order to study the characteristics of radio frequency dielectric barrier discharge (RF-DBD) using argon doped with nitrogen at atmospheric pressure, electrical and optical diagnoses of the discharge with different nitrogen ratios from 1% to 100% were carried out, and the self-organizing form of the filamentous plasma was studied through a transparent water electrode. At the same time, an ICCD camera was used to study the spatiotemporal evolution filamentous discharge during one cycle. Different from discharge using pure argon, using argon doped with nitrogen made the discharge change from glow discharge to filamentous discharge when the voltage increased to a certain value, and a higher nitrogen ratio made the filaments thicker and more sparsely arranged. Under different input power and nitrogen content conditions, several forms of glow discharge, hexagonal/irregularly arranged filamentous discharge and local filamentous discharge were obtained, all of which have potential applications to reduce the high cost of using inert gases.
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Affiliation(s)
- Sen Li
- Department of Information and Intelligent Engineering, Shanghai Publishing and Printing College, Shanghai 200093, China
| | - Jiazhen Sun
- Department of Information and Intelligent Engineering, Shanghai Publishing and Printing College, Shanghai 200093, China
- State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Faculty of Light Industry, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Rui Sun
- State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Faculty of Light Industry, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Jie Pan
- Department of Information and Intelligent Engineering, Shanghai Publishing and Printing College, Shanghai 200093, China
| | - Lin Wang
- Department of Information and Intelligent Engineering, Shanghai Publishing and Printing College, Shanghai 200093, China
| | - Chen Chen
- Department of Information and Intelligent Engineering, Shanghai Publishing and Printing College, Shanghai 200093, China
| | - Qiang Chen
- Laboratory of Plasma Physics and Materials, Beijing Institute of Graphic Communication, Beijing 102600, China
| | - Zhongwei Liu
- Laboratory of Plasma Physics and Materials, Beijing Institute of Graphic Communication, Beijing 102600, China
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21
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Afzal S, Hussain H, Naz MY, Shukrullah S, Ahmad I, Irfan M, Mursal SNF, Legutko S, Kruszelnicka I, Ginter-Kramarczyk D. Catalytic Hydrogen Evolution from H 2S Cracking over Cr xZnS Catalyst in a Cylindrical Single-Layered Dielectric Barrier Discharge Plasma Reactor. Materials (Basel) 2022; 15:7426. [PMID: 36363018 PMCID: PMC9657977 DOI: 10.3390/ma15217426] [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: 09/24/2022] [Revised: 10/11/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
The use of non-thermal plasma technology in producing green fuels is a much-appreciated environmentally friendly approach. In this study, an Al2O3-supported CrxZnS semiconductor catalyst was tested for hydrogen evolution from hydrogen sulfide (H2S) gas by using a single-layered dielectric barrier discharge (DBD) system. The Al2O3-supported CrxZnS catalyst (x = 0.20, 0.25, and 0.30) was produced by using a co-impregnation method and characterized for its structural and photocatalytic characteristics. The discharge column of the DBD system was filled with this catalyst and fed with hydrogen sulfide and argon gas. The DBD plasma was sustained with a fixed AC source of 10 kV where plasma produced species and UV radiations activated the catalyst to break H2S molecules under ambient conditions. The catalyst (hexagonal-cubic-sphalerite structure) showed an inverse relationship between the band gap and the dopant concentration. The hydrogen evolution decreased with an increase in dopant concentration in the nanocomposite. The Cr0.20ZnS catalyst showed excellent photocatalytic activity under the DBD exposure by delivering 100% conversion efficiency of H2S into hydrogen. The conversion decreased to 96% and 90% in case of Cr0.25ZnS and Cr0.30ZnS, respectively.
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Affiliation(s)
- Saba Afzal
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Humaira Hussain
- Department of Chemistry, University of Okara, Okara 56300, Pakistan
| | - Muhammad Yasin Naz
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Shazia Shukrullah
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Irshad Ahmad
- Department of Physics, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan
| | - Muhammad Irfan
- Electrical Engineering Department, College of Engineering, Najran University, Najran 61441, Saudi Arabia
| | - Salim Nasar Faraj Mursal
- Electrical Engineering Department, College of Engineering, Najran University, Najran 61441, Saudi Arabia
| | - Stanislaw Legutko
- Faculty of Mechanical Engineering, Poznan University of Technology, 60-965 Poznan, Poland
| | - Izabela Kruszelnicka
- Department of Water Supply and Bioeconomy, Faculty of Environmental Engineering and Energy, Poznan University of Technology, 60-965 Poznan, Poland
| | - Dobrochna Ginter-Kramarczyk
- Department of Water Supply and Bioeconomy, Faculty of Environmental Engineering and Energy, Poznan University of Technology, 60-965 Poznan, Poland
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22
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Korica MD, Kramar A, Peršin Fratnik Z, Obradović B, Kuraica MM, Dojčinović B, Fras Zemljič L, Kostić M. Obtaining Medical Textiles Based on Viscose and Chitosan/Zinc Nanoparticles with Improved Antibacterial Properties by Using a Dielectric Barrier Discharge. Polymers (Basel) 2022; 14:polym14194152. [PMID: 36236100 PMCID: PMC9573166 DOI: 10.3390/polym14194152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 09/20/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022] Open
Abstract
This study aimed to obtain functional viscose textiles based on chitosan coatings with improved antibacterial properties and washing durability. For that reason, before functionalization with chitosan/zinc nanoparticles (NCH+Zn), the viscose fabric was modified by nonthermal gas plasma of dielectric barrier discharge (DBD) to introduce into its structure functional groups suitable for attachment of NCH+Zn. NCH+Zn were characterized by measurements of hydrodynamic diameter and zeta potential and AFM. DBD-plasma-modified and NCH+Zn-functionalized fabrics were characterized by zeta potential measurements, ATR-FTIR spectroscopy, the calcium acetate method (determination of content of carboxyl and aldehyde groups), SEM, breaking-strength measurements, elemental analysis, and ICP-OES. Their antibacterial activity was determined under dynamic contact conditions. In addition to SEM, the NCH+Zn distributions on viscose fabrics were also indirectly characterized by measuring their absorbent capacities before and after functionalization with NCH+Zn. Washing durability was monitored through changes in the zeta potential, chitosan and zinc content, and antibacterial activity after 1, 3, and 5 washing cycles. The obtained results showed that DBD plasma modification contributed to the simultaneous improvement of NCH+Zn sorption and antibacterial properties of the viscose fabric functionalized with NCH+Zn, and its washing durability, making it suitable for the production of high-value-added medical textiles.
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Affiliation(s)
- Matea D. Korica
- Innovation Center of Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Ana Kramar
- Innovation Center of Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
- Department of Material Science and Engineering and Chemical Engineering, University Carlos III of Madrid, Avda, Universidad 30, 28911 Madrid, Spain
| | - Zdenka Peršin Fratnik
- Institute of Engineering Materials and Design, Faculty of Mechanical Engineering, University of Maribor, Smetanova ul. 17, 2000 Maribor, Slovenia
| | - Bratislav Obradović
- Faculty of Physics, University of Belgrade, Studentski trg 12, 11000 Belgrade, Serbia
| | - Milorad M. Kuraica
- Faculty of Physics, University of Belgrade, Studentski trg 12, 11000 Belgrade, Serbia
| | - Biljana Dojčinović
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
| | - Lidija Fras Zemljič
- Institute of Engineering Materials and Design, Faculty of Mechanical Engineering, University of Maribor, Smetanova ul. 17, 2000 Maribor, Slovenia
| | - Mirjana Kostić
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
- Correspondence: ; Tel.: +381-11-3303628
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Jabłońska B, Dróżdż T, Jabłoński P, Kiełbasa P. Removal of Pb(II), Cd(II) and Ni(II) Ions from Groundwater by Nonthermal Plasma. Materials (Basel) 2022; 15:5426. [PMID: 35955360 PMCID: PMC9369537 DOI: 10.3390/ma15155426] [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: 07/01/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
The removal of Pb(II), Cd(II) and Ni(II) ions from aqueous solutions by means of nonthermal plasma with a dielectric barrier discharge is investigated. Aqueous solutions with metal ion concentrations from 10 to 100 mg/dm3 in spring water were used. In the first stage, the optimization of the solution flow rate, generator modulation frequency and duty cycle was made in terms of the removal efficiency of the considered metals. The removal was then investigated as a function of the number of passes of the solution through the cold plasma reactor. The effect of the initial concentration of ions in the solution was studied. Techniques such as composite central design, least squares method and Fourier transform infrared spectroscopy were used. The physical and chemical parameters of the solutions, such as electrical conductivity, pH, temperature, concentration of metal ions and the content of other substances (e.g., total organic carbon), were measured, and the presence of microorganisms was also examined. It was found that each pass of the solution through the cold plasma reactor causes a decrease in the concentration of Cd(II) and Ni(II); the concentration of Pb(II) drops rapidly after one pass, but further passes do not improve its removal. The removal percentage was 88% for Cd(II) after six passes and 72% for Pb(II) after one pass, whereas 19% for Ni(II). The purification mechanism corresponds to the precipitation of metal ions due to the increasing pH of the solution after exposure to cold plasma.
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Affiliation(s)
- Beata Jabłońska
- Faculty of Infrastructure and Environment, Czestochowa University of Technology, Brzeźnicka St. 60a, 42-200 Częstochowa, Poland
| | - Tomasz Dróżdż
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland
| | - Paweł Jabłoński
- Faculty of Electrical Engineering, Czestochowa University of Technology, Al. Armii Krajowej 17, 42-200 Częstochowa, Poland
| | - Paweł Kiełbasa
- Faculty of Production and Power Engineering, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland
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Li L, Zhang T, Ge W, He X, Zhang Y, Wang X, Li P. Detection of Trace Explosives Using a Novel Sample Introduction and Ionization Method. Molecules 2022; 27:molecules27144551. [PMID: 35889424 PMCID: PMC9320169 DOI: 10.3390/molecules27144551] [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: 06/22/2022] [Revised: 07/06/2022] [Accepted: 07/15/2022] [Indexed: 11/16/2022]
Abstract
A novel sample introduction and ionization method for trace explosives detection is proposed and investigated herein, taking into consideration real-world application requirements. A thermal desorption sampling method and dielectric barrier discharge ionization (DBDI) source, with air as the discharge gas, were developed. The counter flow method was adopted firstly into the DBDI source to remove the interference of ozone and other reactive nitrogen oxides. A separated reaction region with an ion guiding electric field was developed for ionization of the sample molecules. Coupled with a homemade miniature digital linear ion trap mass spectrometer, this compact and robust design, with further optimization, has the advantages of soft ionization, a low detection limit, is free of reagent and consumable gas, and is an easy sample introduction. A range of common nitro-based explosives including TNT, 2,4-DNT, NG, RDX, PETN, and HMX has been studied. A linear response in the range of two orders of magnitude with a limit of detection (LOD) of 0.01 ng for TNT has been demonstrated. Application to the detection of real explosives and simulated mixed samples has also been explored. The work paves the path to developing next generation mass spectrometry (MS) based explosive trace detectors (ETDs).
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Affiliation(s)
- Lingfeng Li
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China; (L.L.); (T.Z.); (W.G.); (X.H.); (Y.Z.)
| | - Tianyi Zhang
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China; (L.L.); (T.Z.); (W.G.); (X.H.); (Y.Z.)
| | - Wei Ge
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China; (L.L.); (T.Z.); (W.G.); (X.H.); (Y.Z.)
| | - Xingli He
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China; (L.L.); (T.Z.); (W.G.); (X.H.); (Y.Z.)
| | - Yunjing Zhang
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China; (L.L.); (T.Z.); (W.G.); (X.H.); (Y.Z.)
| | - Xiaozhi Wang
- College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China;
| | - Peng Li
- School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China; (L.L.); (T.Z.); (W.G.); (X.H.); (Y.Z.)
- Correspondence: ; Tel.: +86-13656249881
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Kramer B, Warschat D, Muranyi P. Disinfection of an ambulance using a compact atmospheric plasma device. J Appl Microbiol 2022; 133:696-706. [PMID: 35503413 DOI: 10.1111/jam.15599] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/21/2022] [Accepted: 04/24/2022] [Indexed: 01/10/2023]
Abstract
AIMS The worldwide spread of the coronavirus SARS-CoV-2 has highlighted the need for fast and simple disinfection processes, amongst others for ambulance cars on site. To overcome current drawbacks regarding room disinfection, the use of cold atmospheric plasma in remote operation represents a promising alternative for the disinfection of larger volumes. In this study, a compact plasma system was evaluated regarding its disinfection efficiency inside an ambulance car. METHODS AND RESULTS The developed plasma device is based on a dielectric barrier discharge (DBD) and operates with ambient air as process gas. The humidified afterglow from the plasma nozzle was introduced into an ambulance car with a volume of approximately 10 m3 while B. atrophaeus endospores, S. aureus or Phi 6 bacteriophages dried on different surfaces (PET-films, glass slides or aluminum foil) were exposed to the reactive gas inside the ambulance vehicle at eight different positions. Reductions of spores by more than 4 orders of magnitude were found on all surfaces and positions within 2 hours. Due to their higher susceptibility, Phi 6 bacteriophages and S. aureus counts were reduced by at least 4 orders of magnitude within 30 min on all surfaces. CONCLUSION The results show that different microorganisms dried on variable surfaces can be inactivated by several orders of magnitude inside an ambulance by plasma gas from of a compact DBD plasma nozzle. SIGNIFICANCE AND IMPACT OF STUDY Plasma gas generated on site by a DBD plasma nozzle proved to be highly efficient for the disinfection of the interior of an ambulance car. Compact plasma systems could be a viable alternative for the disinfection of vehicles or rooms.
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Affiliation(s)
- B Kramer
- Fraunhofer Institute for Process Engineering and Packaging, Giggenhauser Straße 35, 85354, Freising, Germany
| | - D Warschat
- Fraunhofer Institute for Process Engineering and Packaging, Giggenhauser Straße 35, 85354, Freising, Germany
| | - P Muranyi
- Fraunhofer Institute for Process Engineering and Packaging, Giggenhauser Straße 35, 85354, Freising, Germany
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Liu X, Wang Z, Li J, Wang Y, Sun Y, Dou D, Liang X, Wu J, Wang L, Xu Y, Liu D. Inactivation of E. coli, S. aureus, and Bacteriophages in Biofilms by Humidified Air Plasma. Int J Mol Sci 2022; 23:ijms23094856. [PMID: 35563247 PMCID: PMC9100691 DOI: 10.3390/ijms23094856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 04/03/2022] [Revised: 04/20/2022] [Accepted: 04/25/2022] [Indexed: 02/01/2023] Open
Abstract
In this study, humidified air dielectric barrier discharge (DBD) plasma was used to inactivate Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and bacteriophages in biofilms containing DNA, NaCl, carbohydrates, and proteins. The humidified DBD plasma was very effective in the inactivation of microbes in the (≤1.0 μm) biofilms. The number of surviving E. coli, S. aureus, and bacteriophages in the biofilms was strongly dependent on the constituent and thickness of the biofilms and was greatly reduced when the plasma treatment time increased from 5 s to 150 s. Our analysis shows that the UV irradiation was not responsible for the inactivation of microbes in biofilms. The short-lived RONS generated in the humidified air DBD plasma were not directly involved in the inactivation process; however, they recombined or reacted with other species to generate the long-lived RONS. Long-lived RONS diffused into the biofilms to generate very active species, such as ONOOH and OH. This study indicates that the geminated NO2 and OH pair formed due to the homolysis of ONOOH can cause the synergistic oxidation of various organic molecules in the aqueous solution. Proteins in the biofilm were highly resistant to the inactivation of microbes in biofilms, which is presumably due to the existence of the unstable functional groups in the proteins. The unsaturated fatty acids, cysteine-rich proteins, and sulfur–methyl thioether groups in the proteins were easily oxidized by the geminated NO2 and OH pair.
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Affiliation(s)
- Xinni Liu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China; (X.L.); (L.W.); (Y.X.)
| | - Zhishang Wang
- School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; (Z.W.); (J.L.); (Y.W.); (Y.S.); (D.D.); (X.L.); (J.W.)
| | - Jiaxin Li
- School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; (Z.W.); (J.L.); (Y.W.); (Y.S.); (D.D.); (X.L.); (J.W.)
| | - Yiming Wang
- School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; (Z.W.); (J.L.); (Y.W.); (Y.S.); (D.D.); (X.L.); (J.W.)
| | - Yuan Sun
- School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; (Z.W.); (J.L.); (Y.W.); (Y.S.); (D.D.); (X.L.); (J.W.)
| | - Di Dou
- School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; (Z.W.); (J.L.); (Y.W.); (Y.S.); (D.D.); (X.L.); (J.W.)
| | - Xinlei Liang
- School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; (Z.W.); (J.L.); (Y.W.); (Y.S.); (D.D.); (X.L.); (J.W.)
| | - Jiang Wu
- School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; (Z.W.); (J.L.); (Y.W.); (Y.S.); (D.D.); (X.L.); (J.W.)
| | - Lili Wang
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China; (X.L.); (L.W.); (Y.X.)
| | - Yongping Xu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, China; (X.L.); (L.W.); (Y.X.)
| | - Dongping Liu
- School of Electrical Engineering, Dalian University of Technology, Dalian 116024, China; (Z.W.); (J.L.); (Y.W.); (Y.S.); (D.D.); (X.L.); (J.W.)
- Correspondence:
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27
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Škoro N, Živković S, Jevremović S, Puač N. Treatment of Chrysanthemum Synthetic Seeds by Air SDBD Plasma. Plants (Basel) 2022; 11:plants11070907. [PMID: 35406888 PMCID: PMC9003063 DOI: 10.3390/plants11070907] [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] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 05/28/2023]
Abstract
Herein, we present the effect of surface dielectric barrier discharge (SDBD) air cold plasma on regrowth of chrysanthemum synthetic seeds (synseeds) and subsequent plantlet development. The plasma system used in this study operates in air at the frequency of 50 Hz. The detailed electrical characterization of SDBD was shown, as well as air plasma emission spectra obtained by optical emission spectroscopy. The chrysanthemum synseeds (encapsulated shoot tips) were treated in air plasma for different treatment times (0, 5 or 10 min). Plasma treatment significantly improved the regrowth and whole plantlet development of chrysanthemum synseeds under aseptic (in vitro) and non-aseptic (ex vitro) conditions. We evaluated the effect of SDBD plasma on synseed germination of four chrysanthemum cultivars after direct sowing in soil. Germination of synseeds directly sowed in soil was cultivar-dependent and 1.6-3.7 fold higher after plasma treatment in comparison with untreated synseeds. The study showed a highly effective novel strategy for direct conversion of simple monolayer alginate chrysanthemum synseeds into entire plantlets by plasma pre-conversion treatment. This treatment reduced contamination and displayed a considerable ex vitro ability to convert clonally identical chrysanthemum plants.
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Affiliation(s)
- Nikola Škoro
- Institute of Physics-National Institute of Republic of Serbia, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia
| | - Suzana Živković
- Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Boulevard 142, 11000 Belgrade, Serbia
| | - Slađana Jevremović
- Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Boulevard 142, 11000 Belgrade, Serbia
| | - Nevena Puač
- Institute of Physics-National Institute of Republic of Serbia, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia
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Zhu D, Sun Z, Zhang H, Zhang A, Zhang Y, Miruka AC, Zhu L, Li R, Guo Y, Liu Y. Reactive Nitrogen Species Generated by Gas-Liquid Dielectric Barrier Discharge for Efficient Degradation of Perfluorooctanoic Acid from Water. Environ Sci Technol 2022; 56:349-360. [PMID: 34936333 DOI: 10.1021/acs.est.1c06342] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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
Perfluorooctanoic acid (PFOA) poses a serious threat to the ecological environment and biological health because of its ubiquitous distribution, extreme persistence, and high toxicity. In this study, we designed a novel gas-liquid dielectric barrier discharge (GLDBD) reactor which could efficiently destruct PFOA. PFOA removal efficiencies can be obtained in various water matrices, which were higher than 98.0% within 50 min, with energy yields higher than 114.5 mg·kWh-1. It was confirmed that the reactive species including e-, ONOOH, •NO2, and hydroxyl radicals (•OH) were responsible for PFOA removal. Especially, this study first revealed the crucial role of reactive nitrogen species (RNS) for PFOA degradation in the plasma system. Due to the generation of a large amount of RNS, the designed GLDBD reactor proved to be less sensitive to various water matrices, which meant a broader promising practical application. Moreover, influential factors including high concentration of various ions and humic acid (HA), were investigated. The possible PFOA degradation pathways were proposed based on liquid chromatograph-mass spectrometer (LC-MS) results and density functional theory (DFT) calculation, which further confirmed the feasibility of PFOA removal with RNS. This research, therefore, provides an effective and versatile alternative for PFOA removal from various water matrices.
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Affiliation(s)
- Dahai Zhu
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Zhuyu Sun
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Han Zhang
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Ai Zhang
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Yinyin Zhang
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Andere Clement Miruka
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Luxiang Zhu
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Rui Li
- Center for Air and Aquatic Resources Engineering & Science, Clarkson University, Potsdam, New York 13699, United States
| | - Ying Guo
- Department of Applied Physics, College of Science, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
| | - Yanan Liu
- College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, China
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29
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Shih CY, Huang JZ, Chen MH, Hsu CC, Wu CI, Cheng IC, Chen JZ. The Influence of Helium Dielectric Barrier Discharge Jet (DBDjet) Plasma Treatment on Bathocuproine (BCP) in p-i-n-Structure Perovskite Solar Cells. Polymers (Basel) 2021; 13:4020. [PMID: 34833316 PMCID: PMC8622915 DOI: 10.3390/polym13224020] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 01/06/2023] Open
Abstract
A bathocuproine (BCP) layer is typically used as the hole-blocking layer in p-i-n-structure perovskite solar cells (PSCs) between PC61BM and Ag electrodes. Before evaporating the Ag, we used a low-temperature (<40 °C) atmospheric-pressure dielectric barrier discharge jet (DBDjet) to treat the BCP with different scan rates. The main purpose of this was to change the contact resistance between the BCP layer and the Ag electrodes through surface modification using a DBDjet. The best power conversion efficiency (PCE) of 13.11% was achieved at a DBDjet scan rate of 2 cm/s. The He DBDjet treatment introduced nitrogen to form C-N bonds and create pits on the BCP layer. This deteriorated the interface between the BCP and the follow-up deposited-Ag top electrode. Compared to the device without the plasma treatment on the BCP layer, the He DBDjet treatment on the BCP layer reduced photocurrent hysteresis but deteriorated the fill factor and the efficiency of the PSCs.
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Affiliation(s)
- Chung-Yueh Shih
- Graduate Institute of Applied Mechanics, National Taiwan University, Taipei City 10617, Taiwan;
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei City 10617, Taiwan
| | - Jian-Zhi Huang
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei City 10617, Taiwan; (J.-Z.H.); (C.-I.W.); (I.-C.C.)
| | - Mei-Hsin Chen
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei City 10608, Taiwan;
| | - Cheng-Che Hsu
- Department of Chemical Engineering, National Taiwan University, Taipei City 10617, Taiwan;
| | - Chih-I Wu
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei City 10617, Taiwan; (J.-Z.H.); (C.-I.W.); (I.-C.C.)
| | - I-Chun Cheng
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei City 10617, Taiwan; (J.-Z.H.); (C.-I.W.); (I.-C.C.)
- Department of Electrical Engineering, National Taiwan University, Taipei City 10617, Taiwan
- Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei City 10617, Taiwan
| | - Jian-Zhang Chen
- Graduate Institute of Applied Mechanics, National Taiwan University, Taipei City 10617, Taiwan;
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei City 10617, Taiwan
- Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei City 10617, Taiwan
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30
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Liu Q, Ge W, Wang T, Lan J, Martínez‐Jarquín S, Wolfrum C, Stoffel M, Zenobi R. High-Throughput Single-Cell Mass Spectrometry Reveals Abnormal Lipid Metabolism in Pancreatic Ductal Adenocarcinoma. Angew Chem Int Ed Engl 2021; 60:24534-24542. [PMID: 34505339 PMCID: PMC8597026 DOI: 10.1002/anie.202107223] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 08/17/2021] [Indexed: 01/02/2023]
Abstract
Even populations of clonal cells are heterogeneous, which requires high-throughput analysis methods with single-cell sensitivity. Here, we propose a rapid, label-free single-cell analytical method based on active capillary dielectric barrier discharge ionization mass spectrometry, which can analyze multiple metabolites in single cells at a rate of 38 cells/minute. Multiple cell types (HEK-293T, PANC-1, CFPAC-1, H6c7, HeLa and iBAs) were discriminated successfully. We found evidence for abnormal lipid metabolism in pancreatic cancer cells. We also analyzed gene expression in a cancer genome atlas dataset and found that the mRNA level of a critical enzyme of lipid synthesis (ATP citrate lyase, ACLY) was upregulated in human pancreatic ductal adenocarcinoma (PDAC). Moreover, both an ACLY chemical inhibitor and a siRNA approach targeting ACLY could suppress the viability of PDAC cells. A significant reduction in lipid content in treated cells indicates that ACLY could be a potential target for treating pancreatic cancer.
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Affiliation(s)
- Qinlei Liu
- Department of Chemistry and Applied BiosciencesETH ZurichVladimir-Prelog-Weg 38093ZurichSwitzerland
| | - Wenjie Ge
- Department of BiologyETH ZurichOtto-Stern-Weg 78093ZurichSwitzerland
| | - Tongtong Wang
- Department of Health Sciences and TechnologyETH ZurichSchorenstrasse 168603SchwerzenbachSwitzerland
| | - Jiayi Lan
- Department of Chemistry and Applied BiosciencesETH ZurichVladimir-Prelog-Weg 38093ZurichSwitzerland
| | - Sandra Martínez‐Jarquín
- Department of Chemistry and Applied BiosciencesETH ZurichVladimir-Prelog-Weg 38093ZurichSwitzerland
| | - Christian Wolfrum
- Department of Health Sciences and TechnologyETH ZurichSchorenstrasse 168603SchwerzenbachSwitzerland
| | - Markus Stoffel
- Department of BiologyETH ZurichOtto-Stern-Weg 78093ZurichSwitzerland
| | - Renato Zenobi
- Department of Chemistry and Applied BiosciencesETH ZurichVladimir-Prelog-Weg 38093ZurichSwitzerland
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31
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Scholtz V, Vaňková E, Kašparová P, Premanath R, Karunasagar I, Julák J. Non-thermal Plasma Treatment of ESKAPE Pathogens: A Review. Front Microbiol 2021; 12:737635. [PMID: 34712211 PMCID: PMC8546340 DOI: 10.3389/fmicb.2021.737635] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 07/07/2021] [Accepted: 09/09/2021] [Indexed: 01/19/2023] Open
Abstract
The acronym ESKAPE refers to a group of bacteria consisting of Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp. They are important in human medicine as pathogens that show increasing resistance to commonly used antibiotics; thus, the search for new effective bactericidal agents is still topical. One of the possible alternatives is the use of non-thermal plasma (NTP), a partially ionized gas with the energy stored particularly in the free electrons, which has antimicrobial and anti-biofilm effects. Its mechanism of action includes the formation of pores in the bacterial membranes; therefore, resistance toward it is not developed. This paper focuses on the current overview of literature describing the use of NTP as a new promising tool against ESKAPE bacteria, both in planktonic and biofilm forms. Thus, it points to the fact that NTP treatment can be used for the decontamination of different types of liquids, medical materials, and devices or even surfaces used in various industries. In summary, the use of diverse experimental setups leads to very different efficiencies in inactivation. However, Gram-positive bacteria appear less susceptible compared to Gram-negative ones, in general.
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Affiliation(s)
- Vladimír Scholtz
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, Czechia
| | - Eva Vaňková
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, Czechia.,Department of Biotechnology, University of Chemistry and Technology, Prague, Czechia
| | - Petra Kašparová
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, Czechia
| | - Ramya Premanath
- Nitte University, Nitte University Centre for Science Education and Research, Mangalore, India
| | - Iddya Karunasagar
- Nitte University, Nitte University Centre for Science Education and Research, Mangalore, India
| | - Jaroslav Julák
- Department of Physics and Measurements, University of Chemistry and Technology, Prague, Czechia.,Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czechia
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32
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Liu JH, Zhang M, Chen XY, Zhang Y, Xu YX. Modification of Enteromorpha prolifera with dielectric barrier discharge plasma to enhance malachite green adsorption. Lett Appl Microbiol 2021; 74:103-108. [PMID: 34695247 DOI: 10.1111/lam.13592] [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: 07/02/2021] [Revised: 09/12/2021] [Accepted: 10/21/2021] [Indexed: 11/28/2022]
Abstract
Dyes, a kind of visible chemical, have severe deleterious effects on human health and ecological environment. In this work, batch biosorption experiments were carried out under various experimental conditions such as pH value and agitation time to optimize the potentiality of Enteromorpha prolifera for the removal of malachite green (MG) dye from aqueous solution (70·7%). Then, the algal biomass was treated with a dielectric barrier discharge (DBD) in helium for 4 and 10 min to enhance MG removal efficiency (84·7 and 96·6%). In addition, Fourier-transform infrared spectroscopy in combination with scanning electron microscopy was employed to monitor the chemical and physical changes of algal cells treated by DBD. This study illustrates that DBD may serve as an effective tool to activate the functional groups on the cell wall surface for dye binding, and it even offers an alternative new technique to improve the adsorption properties of native biosorbents for the removal of toxic dyes from wastewater.
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Affiliation(s)
- J H Liu
- College of Agriculture and Bioengineering, Heze University, Heze, China.,College of Life and Health Science, Anhui Science and Technology University, Fengyang, China.,Anhui Province of Key Laboratory of Environmental Toxicology and Pollution Control Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - M Zhang
- College of Agriculture and Bioengineering, Heze University, Heze, China
| | - X Y Chen
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, China
| | - Y Zhang
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, China
| | - Y X Xu
- College of Life and Health Science, Anhui Science and Technology University, Fengyang, China
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33
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Liu P, Song Y, Zhang Z. A Novel Dielectric Barrier Discharge (DBD) Reactor with Streamer and Glow Corona Discharge for Improved Ozone Generation at Atmospheric Pressure. Micromachines (Basel) 2021; 12:1287. [PMID: 34832699 DOI: 10.3390/mi12111287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/17/2021] [Accepted: 10/18/2021] [Indexed: 11/17/2022]
Abstract
Discharge mode is an important parameter for ozone synthesis by dielectric barrier discharge (DBD). Currently, it is still challenging to stably generate glow discharge with oxygen at atmospheric pressure. In this paper, a DBD reactor with a layer of silver placed between the electrode and the dielectric layer (SL-DBD) was developed. Experimental results show that both streamer and glow corona discharge were stably generated under sinusoidal excitation with a 0.5 mm discharge gap in a parallel-plate DBD, due to the increased electric field strength in the discharge gap by the silver layer. It was also found that, in the SL-DBD reactor, glow corona discharge enhances the discharge strength by 50 times. The spectral peak of O at 777 nm in SL-DBD is increased to 28,800, compared with 18,389 in a reactor with a streamer only. The SL-DBD reactor produces ozone with a concentration of as high as 150 g/m3 and shows good stability in an 8 h durability test.
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Liu C, Hung CW, Cheng IC, Hsu CC, Cheng IC, Chen JZ. Dielectric Barrier Discharge Plasma Jet (DBDjet) Processed Reduced Graphene Oxide/Polypyrrole/Chitosan Nanocomposite Supercapacitors. Polymers (Basel) 2021; 13:3585. [PMID: 34685344 PMCID: PMC8538378 DOI: 10.3390/polym13203585] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/28/2021] [Accepted: 10/11/2021] [Indexed: 11/22/2022] Open
Abstract
Reduced graphene oxide (rGO) and/or polypyrrole (PPy) are mixed with chitosan (CS) binder materials for screen-printing supercapacitors (SCs) on arc atmospheric-pressure plasma jet (APPJ)-treated carbon cloth. The performance of gel-electrolyte rGO/CS, PPy/CS, and rGO/PPy/CS SCs processed by a dielectric barrier discharge plasma jet (DBDjet) was assessed and compared. DBDjet processing improved the hydrophilicity of these three nanocomposite electrode materials. Electrochemical measurements including electrical impedance spectroscopy (EIS), cyclic voltammetry (CV), and galvanostatic charging-discharging (GCD) were used to evaluate the performance of the three types of SCs. The Trasatti method was used to evaluate the electric-double layer capacitance (EDLC) and pseudocapacitance (PC) of the capacitance. The energy and power density of the three types of SCs were illustrated and compared using Ragone plots. Our experiments verify that, with the same weight of active materials, the combined use of rGO and PPy in SCs can significantly increase the capacitance and improve the operation stability.
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Affiliation(s)
- Chen Liu
- Graduate Institute of Applied Mechanics, National Taiwan University, Taipei City 10617, Taiwan;
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei City 10617, Taiwan
| | - Cheng-Wei Hung
- Department of Mechanical Engineering, National Taiwan University, Taipei City 10617, Taiwan; (C.-W.H.); (I.-C.C.)
| | - I-Chung Cheng
- Department of Mechanical Engineering, National Taiwan University, Taipei City 10617, Taiwan; (C.-W.H.); (I.-C.C.)
| | - Cheng-Che Hsu
- Department of Chemical Engineering, National Taiwan University, Taipei City 10617, Taiwan;
| | - I-Chun Cheng
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei City 10617, Taiwan;
- Department of Electrical Engineering, National Taiwan University, Taipei City 10617, Taiwan
- Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei City 10617, Taiwan
| | - Jian-Zhang Chen
- Graduate Institute of Applied Mechanics, National Taiwan University, Taipei City 10617, Taiwan;
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei City 10617, Taiwan
- Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei City 10617, Taiwan
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Abarghuei FM, Etemadi M, Ramezanian A, Esehaghbeygi A, Alizargar J. An Application of Cold Atmospheric Plasma to Enhance Physiological and Biochemical Traits of Basil. Plants (Basel) 2021; 10:plants10102088. [PMID: 34685897 PMCID: PMC8540659 DOI: 10.3390/plants10102088] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 08/02/2021] [Revised: 09/14/2021] [Accepted: 09/27/2021] [Indexed: 11/16/2022]
Abstract
This study aimed to investigate the effects of dielectric barrier discharge cold atmospheric plasma on the performance of basil (Ocimum basilicum L. cv. Genovese Gigante). Evaluations were carried out on several physiological and biochemical traits, including ion leakage, water relative content, proline and protein accumulation, chlorophyll and carotenoid contents, and antioxidant activity. Before planting, basil seeds were treated by cold atmospheric plasma under voltages of 10, 15, and 20 kV for 10, 20, and 30 min. The ion leakage rate in plants was significantly affected by the interaction between plasma and radiation time. In most treatments, the application of plasma significantly reduced the ion leakage rate. The application of plasma (10 and 20 kV) for 10 min significantly increased the relative water content of basil leaves. The maximum amount of total chlorophyll and carotenoid content occurred after applying plasma for 20 min with 15 kV. Furthermore, 10 and 15 kV treatments of atmospheric cold plasma for 10 min caused a significant increase in antioxidant activity. The highest total flavonoids were obtained after applying 15 kV treatments for 20 min and 20 kV for 30 min, respectively. Cold atmospheric plasma significantly increased the activity of peroxidase as an antioxidant enzyme. Moreover, the minimum and maximum values of microbial load based on logarithm ten were reached after applying 10 kV for 30 min and in the control group, respectively. In general, the results showed that dielectric barrier discharge cold atmospheric plasma could significantly improve basil plants’ physiological and biochemical traits.
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Affiliation(s)
- Faezeh Mirazimi Abarghuei
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz 71441-65186, Iran; (F.M.A.); (A.R.)
| | - Mohammad Etemadi
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz 71441-65186, Iran; (F.M.A.); (A.R.)
- Correspondence: (M.E.); (J.A.); Tel.: +98-71-36138447 (M.E.)
| | - Asghar Ramezanian
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz 71441-65186, Iran; (F.M.A.); (A.R.)
| | - Ali Esehaghbeygi
- Department of Biosystems Engineering, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran;
| | - Javad Alizargar
- Research Center for Healthcare Industry Innovation, National Taipei University of Nursing and Health Sciences, Taipei 112, Taiwan
- Correspondence: (M.E.); (J.A.); Tel.: +98-71-36138447 (M.E.)
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36
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Motyka-Pomagruk A, Dzimitrowicz A, Orlowski J, Babinska W, Terefinko D, Rychlowski M, Prusinski M, Pohl P, Lojkowska E, Jamroz P, Sledz W. Implementation of a Non-Thermal Atmospheric Pressure Plasma for Eradication of Plant Pathogens from a Surface of Economically Important Seeds. Int J Mol Sci 2021; 22:9256. [PMID: 34502164 PMCID: PMC8431735 DOI: 10.3390/ijms22179256] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 02/03/2023] Open
Abstract
Plant pathogenic bacteria cause significant economic losses in the global food production sector. To secure an adequate amount of high-quality nutrition for the growing human population, novel approaches need to be undertaken to combat plant disease-causing agents. As the currently available methods to eliminate bacterial phytopathogens are scarce, we evaluated the effectiveness and mechanism of action of a non-thermal atmospheric pressure plasma (NTAPP). It was ignited from a dielectric barrier discharge (DBD) operation in a plasma pencil, and applied for the first time for eradication of Dickeya and Pectobacterium spp., inoculated either on glass spheres or mung bean seeds. Furthermore, the impact of the DBD exposure on mung bean seeds germination and seedlings growth was estimated. The observed bacterial inactivation rates exceeded 3.07 logs. The two-minute DBD exposure stimulated by 3-4% the germination rate of mung bean seeds and by 13.4% subsequent early growth of the seedlings. On the contrary, a detrimental action of the four-minute DBD subjection on seed germination and early growth of the sprouts was noted shortly after the treatment. However, this effect was no longer observed or reduced to 9.7% after the 96 h incubation period. Due to the application of optical emission spectrometry (OES), transmission electron microscopy (TEM), and confocal laser scanning microscopy (CLSM), we found that the generated reactive oxygen and nitrogen species (RONS), i.e., N2, N2+, NO, OH, NH, and O, probably led to the denaturation and aggregation of DNA, proteins, and ribosomes. Furthermore, the cellular membrane disrupted, leading to an outflow of the cytoplasm from the DBD-exposed cells. This study suggests the potential applicability of NTAPPs as eco-friendly and innovative plant protection methods.
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Affiliation(s)
- Agata Motyka-Pomagruk
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Anna Dzimitrowicz
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (A.D.); (D.T.); (P.P.); (P.J.)
| | - Jakub Orlowski
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Weronika Babinska
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Dominik Terefinko
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (A.D.); (D.T.); (P.P.); (P.J.)
| | - Michal Rychlowski
- Laboratory of Virus Molecular Biology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland;
| | - Michal Prusinski
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Pawel Pohl
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (A.D.); (D.T.); (P.P.); (P.J.)
| | - Ewa Lojkowska
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
| | - Piotr Jamroz
- Department of Analytical Chemistry and Chemical Metallurgy, Wroclaw University of Science and Technology, 27 Wybrzeze St. Wyspianskiego, 50-370 Wroclaw, Poland; (A.D.); (D.T.); (P.P.); (P.J.)
| | - Wojciech Sledz
- Laboratory of Plant Protection and Biotechnology, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, University of Gdansk, 58 Abrahama, 80-307 Gdansk, Poland; (J.O.); (W.B.); (M.P.); (E.L.); (W.S.)
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Korzec D, Andres T, Brandes E, Nettesheim S. Visualization of Activated Area on Polymers for Evaluation of Atmospheric Pressure Plasma Jets. Polymers (Basel) 2021; 13:polym13162711. [PMID: 34451254 PMCID: PMC8401304 DOI: 10.3390/polym13162711] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 06/17/2021] [Revised: 07/30/2021] [Accepted: 08/08/2021] [Indexed: 11/16/2022] Open
Abstract
The treatment of a polymer surface using an atmospheric pressure plasma jet (APPJ) causes a local increase of the surface free energy (SFE). The plasma-treated zone can be visualized with the use of a test ink and quantitatively evaluated. However, the inked area is shrinking with time. The shrinkage characteristics are collected using activation image recording (AIR). The recording is conducted by a digital camera. The physical mechanisms of activation area shrinkage are discussed. The error sources are analyzed and methods of error reduction are proposed. The standard deviation of the activation area is less than 3%. Three polymers, acrylonitrile butadiene styrene (ABS), high-density polyethylene (HDPE), and polyoxymethylene (POM), are examined as a test substrate material. Due to a wide variation range of SFE and a small hydrophobic recovery, HDPE is chosen. Since the chemical mixtures tend to temporal changes of the stoichiometry, the pure formamide test ink with 58 mN/m is selected. The method is tested for the characterization of five different types of discharge: (i) pulsed arc APPJ with the power of about 700 W; (ii) piezoelectric direct discharge APPJ; (iii) piezoelectric driven needle corona in ambient air; (iv) piezoelectric driven plasma needle in argon; and (v) piezoelectric driven dielectric barrier discharge (DBD). For piezoelectrically driven discharges, the power was either 4.5 W or 8 W. It is shown how the AIR method can be used to solve different engineering problems.
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Cai Y, Li M, Gu J, Zhou H, Zhao Y. An effective method for size-controlled gold nanoparticles synthesis with nonthermal microplasma. Nanotechnology 2021; 32:395603. [PMID: 34157697 DOI: 10.1088/1361-6528/ac0d80] [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] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
A simple, effective and interesting method for gold nanoparticles (AuNPs) synthesis with nonthermal microplasma is developed in this study. The device of dielectric barrier discharge (DBD) microplasma generator with a spray portion is designed and fabricated for uniform AuNPs synthesis. The AuNPs can be synthesized effectivelyin situby the DBD microplasma generated on the nozzle of the pneumatic micro-nebulizer. The mechanism of the AuNPs formation under microplasma, the effect of nebulization for uniform AuNPs synthesis and other significant parameters are investigated in the experiment. The morphology and optical properties of the synthesized gold nanoparticles are also characterized. The minimum particle size in average obtained by the proposed method is 4.9 ± 1.1 nm. The particle size of AuNPs can be controlled in the range of 4.9-16.8 nm by the various aqueous solution conditions.
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Affiliation(s)
- Yi Cai
- School of Control Engineering, Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao, People's Republic of China
- College of Information Science and Engineering, Northeastern University, Shenyang, People's Republic of China
| | - Ming Li
- School of Control Engineering, Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao, People's Republic of China
| | - Junjie Gu
- Technology Center of Shenyang Customs, Shenyang, People's Republic of China
| | - Han Zhou
- School of Control Engineering, Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao, People's Republic of China
| | - Yong Zhao
- School of Control Engineering, Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, Northeastern University at Qinhuangdao, Qinhuangdao, People's Republic of China
- College of Information Science and Engineering, Northeastern University, Shenyang, People's Republic of China
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Lee Y, Lee YY, Kim YS, Balaraju K, Mok YS, Yoo SJ, Jeon Y. Enhancement of seed germination and microbial disinfection on ginseng by cold plasma treatment. J Ginseng Res 2021; 45:519-526. [PMID: 34295212 PMCID: PMC8282493 DOI: 10.1016/j.jgr.2020.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 08/03/2020] [Revised: 11/09/2020] [Accepted: 12/07/2020] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND This study aimed to investigate the effect of cold plasma treatment on the improvement of seed germination and surface sterilization of ginseng seeds. METHODS Dehisced ginseng (Panax ginseng) seeds were exposed to dielectric barrier discharge (DBD) plasma operated in argon (Ar) or an argon/oxygen mixture (Ar/O2), and the resulting germination and surface sterilization were compared with those of an untreated control group. Bacterial and fungal detection assays were performed for plasma-treated ginseng seeds after serial dilution of surface-washed suspensions. The microbial colonies (fungi and bacteria) were classified according to their phenotypical morphologies and identified by molecular analysis. Furthermore, the effect of cold plasma treatment on the in vitro antifungal activity and suppression of Cylindrocarpon destructans in 4-year-old ginseng root discs was investigated. RESULTS Seeds treated with plasma in Ar or Ar/O2 exhibited a higher germination rate (%) compared with the untreated controls. Furthermore, the plasma treatment exhibited bactericidal and fungicidal effects on the seed surface, and the latter effect was stronger than the former. In addition, plasma treatment exhibited in vitro antifungal activity against C. destructans and reduced the disease severity (%) of root rot in 4-year-old ginseng root discs. The results demonstrate the stimulatory effect of plasma treatment on seed germination, surface sterilization, and root rot disease suppression in ginseng. CONCLUSION The results of this study indicate that the cold plasma treatment can suppress the microbial community on the seed surface root rot in ginseng.
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Affiliation(s)
- Younmi Lee
- Department of Plant Medicals, Andong National University, Andong, Republic of Korea
- Agricultural Science & Technology Research Institute, Andong National University, Andong, Republic of Korea
| | - Young Yoon Lee
- Department of Plant Medicals, Andong National University, Andong, Republic of Korea
| | - Young Soo Kim
- Department of Plant Medicals, Andong National University, Andong, Republic of Korea
| | - Kotnala Balaraju
- Agricultural Science & Technology Research Institute, Andong National University, Andong, Republic of Korea
| | - Young Sun Mok
- Department of Chemical and Biological Engineering, Jeju National University, Jeju, Republic of Korea
| | - Suk Jae Yoo
- Plasma Technology Research Center, National Fusion Research Institute, Jeollabuk-do, Republic of Korea
| | - Yongho Jeon
- Department of Plant Medicals, Andong National University, Andong, Republic of Korea
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Shafique A, Rangasamy VS, Vanhulsel A, Safari M, Gross S, Adriaensens P, Van Bael MK, Hardy A, Sallard S. Dielectric Barrier Discharge (DBD) Plasma Coating of Sulfur for Mitigation of Capacity Fade in Lithium-Sulfur Batteries. ACS Appl Mater Interfaces 2021; 13:28072-28089. [PMID: 34100584 DOI: 10.1021/acsami.1c04069] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Sulfur particles with a conductive polymer coating of poly(3,4-ethylene dioxythiophene) "PEDOT" were prepared by dielectric barrier discharge (DBD) plasma technology under atmospheric conditions (low temperature, ambient pressure). We report a solvent-free, low-cost, low-energy-consumption, safe, and low-risk process to make the material development and production compatible for sustainable technologies. Different coating protocols were developed to produce PEDOT-coated sulfur powders with electrical conductivity in the range of 10-8-10-5 S/cm. The raw sulfur powder (used as the reference) and (low-, optimum-, high-) PEDOT-coated sulfur powders were used to assemble lithium-sulfur (Li-S) cells with a high sulfur loading of ∼4.5 mg/cm2. Long-term galvanostatic cycling at C/10 for 100 cycles showed that the capacity fade was mitigated by ∼30% for the cells containing the optimum-PEDOT-coated sulfur in comparison to the reference Li-S cells with raw sulfur. Rate capability, cyclic voltammetry, and electrochemical impedance analyzes confirmed the improved behavior of the PEDOT-coated sulfur as an active material for lithium-sulfur batteries. The Li-S cells containing optimum-PEDOT-coated sulfur showed the highest reproducibility of their electrochemical properties. A wide variety of bulk and surface characterization methods including conductivity analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and NMR spectroscopy were used to explain the chemical features and the superior behavior of Li-S cells using the optimum-PEDOT-coated sulfur material. Moreover, postmortem [SEM and Brunauer-Emmett-Teller (BET)] analyzes of uncoated and coated samples allowed us to exclude any significant effect at the electrode scale even after 70 cycles.
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Affiliation(s)
- Ahmed Shafique
- Sustainable Materials, VITO (Flemish Institute for Technological Research), Boeretang 200, 2400 Mol, Belgium
- Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B 3500 Hasselt, Belgium
- Energyville, Thor Park 8320, B-3600 Genk, Belgium
| | - Vijay Shankar Rangasamy
- Sustainable Materials, VITO (Flemish Institute for Technological Research), Boeretang 200, 2400 Mol, Belgium
- Energyville, Thor Park 8320, B-3600 Genk, Belgium
| | - Annick Vanhulsel
- Sustainable Materials, VITO (Flemish Institute for Technological Research), Boeretang 200, 2400 Mol, Belgium
- Energyville, Thor Park 8320, B-3600 Genk, Belgium
| | - Mohammadhosein Safari
- Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B 3500 Hasselt, Belgium
- Imec vzw, div. imomec, Wetenschapspark 1, B 2590 Diepenbeek, Belgium
- Energyville, Thor Park 8320, B-3600 Genk, Belgium
| | - Silvia Gross
- Department of Chemical Sciences, University of Padua, via Marzolo, 1, 35131 Padova, PD, Italy
| | - Peter Adriaensens
- Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B 3500 Hasselt, Belgium
- Imec vzw, div. imomec, Wetenschapspark 1, B 2590 Diepenbeek, Belgium
| | - Marlies K Van Bael
- Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B 3500 Hasselt, Belgium
- Imec vzw, div. imomec, Wetenschapspark 1, B 2590 Diepenbeek, Belgium
- Energyville, Thor Park 8320, B-3600 Genk, Belgium
| | - An Hardy
- Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, B 3500 Hasselt, Belgium
- Imec vzw, div. imomec, Wetenschapspark 1, B 2590 Diepenbeek, Belgium
- Energyville, Thor Park 8320, B-3600 Genk, Belgium
| | - Sébastien Sallard
- Sustainable Materials, VITO (Flemish Institute for Technological Research), Boeretang 200, 2400 Mol, Belgium
- Energyville, Thor Park 8320, B-3600 Genk, Belgium
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Nasiru MM, Frimpong EB, Muhammad U, Qian J, Mustapha AT, Yan W, Zhuang H, Zhang J. Dielectric barrier discharge cold atmospheric plasma: Influence of processing parameters on microbial inactivation in meat and meat products. Compr Rev Food Sci Food Saf 2021; 20:2626-2659. [PMID: 33876887 DOI: 10.1111/1541-4337.12740] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 10/08/2020] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 12/26/2022]
Abstract
Decontamination of meat is commonly practiced to get rid of or decrease the microbial presence on the meat surface. Dielectric barrier discharge cold atmospheric plasma (DBD-CAP) as innovative technology is a food microbial inactivation technique considered in high regard by food scientists and engineers in present times. However, cold atmospheric plasma application is at the experimental stage, due to lack of sufficient information on its mode of action in inactivating microbes, food shelf-life extensibility, whereas, the nutritional value of food is preserved. In this review, we have appraised recent work on DBD-CAP concerning the decontamination treatment of meat products, highlighting the processing value results on the efficacy of the DBD-CAP microbial inactivation technique. Also, the paper will review the configurations, proposed mechanisms, and chemistry of DBD-CAP. Satisfactory microbial inactivation was observed. In terms of DBD-CAP application on sensory evaluation, inferences from reviewed literature showed that DBD has no significant effect on meat color and tenderness, whereas in contrast, TBARS values of fresh and processed meat are affected. DBD seems economically efficient and environmentally sustainable.
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Affiliation(s)
- Mustapha Muhammad Nasiru
- National Center of Meat Quality and Safety Control, Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China.,College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China.,Department of Food Science and Technology, Faculty of Agriculture and Agricultural Technology, Federal University Dutsin-Ma, Kankara-Katsina Road, Dutsin-Ma, Katsina, 821101, Nigeria
| | - Evans Boateng Frimpong
- College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China
| | - Umair Muhammad
- Department of Food Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, China
| | - Jing Qian
- National Center of Meat Quality and Safety Control, Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China.,College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China
| | | | - Wenjing Yan
- National Center of Meat Quality and Safety Control, Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China.,College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China
| | - Hong Zhuang
- Quality and Safety Assessment Research Unit, U.S. National Poultry Research Center, USDA-ARS, Athens, Georgia, USA
| | - Jianhao Zhang
- National Center of Meat Quality and Safety Control, Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China.,College of Food Science and Technology, Nanjing Agricultural University, No. 1 Weigang Road, Nanjing, Jiangsu, 210095, PR China
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Peng Z, Liu JX, Zhu H, Guo T, Xu L, Dong JG, Cheng P, Zhou Z. Development of a new atmospheric pressure plasmaspray ionization for ambient mass spectrometry. J Mass Spectrom 2021; 56:e4629. [PMID: 32767454 DOI: 10.1002/jms.4629] [Citation(s) in RCA: 4] [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] [Received: 05/14/2020] [Revised: 06/29/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
A new atmospheric pressure ionization method, plasmaspray ionization, termed as PSI, was developed to be an alternative ambient ion source for mass spectrometry. It comprises a plasma jet device and a sample spray part. While the nonthermal plasma jet strikes the surface of stainless steel tube out of the spray capillary, the sprayed sample will be ionized with the assistant of auxiliary gas. Although PSI is a little bit more complex than electrospray ionization (ESI) in instrument, it shows both better linearity and higher sensitivity for organic compounds. For protein samples, it presents wider distributions of multiply charged ions and higher mass resolution without sacrificing any sensitivity. For the mechanism of PSI, the charge build-up process on the tip of capillary should play a key role for the ion formation, and the stimulated pulsed voltage on the flow tube will promote the ion aggregation speed until the charge density is high enough. PSI source contains the features of plasma ionization and ESI and can be considered as a novel combo bridging these techniques. These results reflect that this method of PSI can be applied and further developed as a versatile new ion source for a wild range of organic and biological samples.
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Affiliation(s)
- Zhen Peng
- Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, China
| | - Ji-Xing Liu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Hui Zhu
- Kunshan Hexin Mass Spectrometry Technology Co., Ltd., Kunshan, China
| | - Teng Guo
- Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, China
| | - Li Xu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Jun-Guo Dong
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Ping Cheng
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, China
| | - Zhen Zhou
- Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, China
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Massima Mouele ES, Tijani JO, Badmus KO, Pereao O, Babajide O, Zhang C, Shao T, Sosnin E, Tarasenko V, Fatoba OO, Laatikainen K, Petrik LF. Removal of Pharmaceutical Residues from Water and Wastewater Using Dielectric Barrier Discharge Methods-A Review. Int J Environ Res Public Health 2021; 18:1683. [PMID: 33578670 PMCID: PMC7916394 DOI: 10.3390/ijerph18041683] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 10/20/2020] [Revised: 12/31/2020] [Accepted: 01/12/2021] [Indexed: 12/19/2022]
Abstract
Persistent pharmaceutical pollutants (PPPs) have been identified as potential endocrine disruptors that mimic growth hormones when consumed at nanogram per litre to microgram per litre concentrations. Their occurrence in potable water remains a great threat to human health. Different conventional technologies developed for their removal from wastewater have failed to achieve complete mineralisation. Advanced oxidation technologies such as dielectric barrier discharges (DBDs) based on free radical mechanisms have been identified to completely decompose PPPs. Due to the existence of pharmaceuticals as mixtures in wastewater and the recalcitrance of their degradation intermediate by-products, no single advanced oxidation technology has been able to eliminate pharmaceutical xenobiotics. This review paper provides an update on the sources, occurrence, and types of pharmaceuticals in wastewater by emphasising different DBD configurations previously and currently utilised for pharmaceuticals degradation under different experimental conditions. The performance of the DBD geometries was evaluated considering various factors including treatment time, initial concentration, half-life time, degradation efficiency and the energy yield (G50) required to degrade half of the pollutant concentration. The review showed that the efficacy of the DBD systems on the removal of pharmaceutical compounds depends not only on these parameters but also on the nature/type of the pollutant.
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Affiliation(s)
- Emile S. Massima Mouele
- Environmental Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa; (J.O.T.); (K.O.B.); (O.P.); (O.B.); (O.O.F.)
- Department of Separation Science, Lappeenranta-Lahti University of Technology LUT, P.O. Box 20, FI-53851 Lappeenranta, Finland;
| | - Jimoh O. Tijani
- Environmental Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa; (J.O.T.); (K.O.B.); (O.P.); (O.B.); (O.O.F.)
- Department of Chemistry, Federal University of Technology, PMB 65, P.O. Box 920 Minna, Niger State 920001, Nigeria
| | - Kassim O. Badmus
- Environmental Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa; (J.O.T.); (K.O.B.); (O.P.); (O.B.); (O.O.F.)
| | - Omoniyi Pereao
- Environmental Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa; (J.O.T.); (K.O.B.); (O.P.); (O.B.); (O.O.F.)
| | - Omotola Babajide
- Environmental Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa; (J.O.T.); (K.O.B.); (O.P.); (O.B.); (O.O.F.)
- Department of Mechanical Engineering, Cape Peninsula University of Technology, P.O. Box 1906, Bellville 7535, South Africa
| | - Cheng Zhang
- Beijing International S&T Cooperation Base for Plasma Science, Energy Conversion, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China; (C.Z.); (T.S.)
| | - Tao Shao
- Beijing International S&T Cooperation Base for Plasma Science, Energy Conversion, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China; (C.Z.); (T.S.)
| | - Eduard Sosnin
- Institute of High Current Electronics, Russian Academy of Sciences, 634055 Tomsk, Russia; (E.S.); (V.T.)
| | - Victor Tarasenko
- Institute of High Current Electronics, Russian Academy of Sciences, 634055 Tomsk, Russia; (E.S.); (V.T.)
| | - Ojo O. Fatoba
- Environmental Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa; (J.O.T.); (K.O.B.); (O.P.); (O.B.); (O.O.F.)
| | - Katri Laatikainen
- Department of Separation Science, Lappeenranta-Lahti University of Technology LUT, P.O. Box 20, FI-53851 Lappeenranta, Finland;
| | - Leslie F. Petrik
- Environmental Nano Science Research Group, Department of Chemistry, University of the Western Cape, Bellville, Cape Town 7535, South Africa; (J.O.T.); (K.O.B.); (O.P.); (O.B.); (O.O.F.)
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Lin A, Razzokov J, Verswyvel H, Privat-Maldonado A, De Backer J, Yusupov M, Cardenas De La Hoz E, Ponsaerts P, Smits E, Bogaerts A. Oxidation of Innate Immune Checkpoint CD47 on Cancer Cells with Non-Thermal Plasma. Cancers (Basel) 2021; 13:579. [PMID: 33540720 DOI: 10.3390/cancers13030579] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 01/14/2021] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/13/2022] Open
Abstract
Non-thermal plasma (NTP) therapy has been emerging as a promising cancer treatment strategy, and recently, its ability to locally induce immunogenic cancer cell death is being unraveled. We hypothesized that the chemical species produced by NTP reduce immunosuppressive surface proteins and checkpoints that are overexpressed on cancerous cells. Here, 3D in vitro tumor models, an in vivo mouse model, and molecular dynamics simulations are used to investigate the effect of NTP on CD47, a key innate immune checkpoint. CD47 is immediately modulated after NTP treatment and simulations reveal the potential oxidized salt-bridges responsible for conformational changes. Umbrella sampling simulations of CD47 with its receptor, signal-regulatory protein alpha (SIRPα), demonstrate that the induced-conformational changes reduce its binding affinity. Taken together, this work provides new insight into fundamental, chemical NTP-cancer cell interaction mechanisms and a previously overlooked advantage of present NTP cancer therapy: reducing immunosuppressive signals on the surface of cancer cells.
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Nawaz MI, Yi C, Zhao H, Asilevi PJ, Yin L, Yi R, Javed Q, Wang H. Experimental study of nitrobenzene degradation in water by strong ionization dielectric barrier discharge. Environ Technol 2021; 42:789-800. [PMID: 31345105 DOI: 10.1080/09593330.2019.1645740] [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: 03/20/2019] [Accepted: 07/14/2019] [Indexed: 06/10/2023]
Abstract
Nitrobenzene (NB) is toxic and carcinogenic aromatic compound widely used in several industries which is ultimately found in their effluents. In this work, dielectric barrier discharge (DBD) reactor was employed for the degradation of nitrobenzene in aqueous solution. Active species like O3 and •OH produced by DBD reactor were mixed with water which degraded the NB. The results indicated that the lower NB concentrations slightly acidic conditions and high voltage ranges showed the optimum efficiencies. Moreover, the impacts of active species inhibitors isopropyl alcohol (IPA), tert-butanol (TBA), inorganic ions for instance sulfates ( S O 4 2 - ), bicarbonates ( H C O 3 - ), nitrates ( N O 3 - ), carbonates ( C O 3 2 - ) and chlorides (Cl-) on the degradation of NB were examined. This analysis showed that the hydroxyl radical was captured by the addition of these inhibitors and resulted in the decrease in efficiencies. Byproducts produced during the degradation of nitrobenzene were assessed by analytical techniques of high-performance liquid chromatography (HPLC), liquid chromatography-mass spectrometry (LC-MS), UV-visible spectroscopy and total organic carbon (TOC) analysis. Main intermediate products were nitrophenols and low molecular weight organic acids including oxalic acid and acetic acid that were eventually mineralized to CO2 and H2O. The dielectric barrier discharge technology was found productive for the degradation of nitroaromatic compounds.
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Affiliation(s)
- Muhammad Imran Nawaz
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, People's Republic of China
| | - Chengwu Yi
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, People's Republic of China
| | - Hong Zhao
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, People's Republic of China
| | - Prince Junior Asilevi
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, People's Republic of China
| | - Lanlan Yin
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, People's Republic of China
| | - Rongjie Yi
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, People's Republic of China
| | - Qaiser Javed
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, People's Republic of China
| | - Huijuan Wang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, People's Republic of China
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Abstract
The atmospheric-pressure non-thermal dielectric barrier discharge (DBD) plasma has recently emerged as an efficient decontamination method for the food safety enhancement. Thus the objective of this study was to evaluate the effectiveness of a simple DBD plasma treatment, with a relatively low-frequency power supply operating at 60 Hz, for microbial inactivation. A parametric study of operating conditions for bacterial inactivation was conducted using nutrient agar inoculated with Escherichia coli (2.28--6.28 log CFU/ml). The microbial log reduction was enhanced with increasing input power (30, 50, 70 W) and plasma exposure time (0, 1, 3, 5, 7 min). The inactivation effect was increased by decreasing inter-electrode gap (2, 1.5, 1 cm) and by reducing the initial microorganism concentration. Accordingly, a DBD plasma treatment at 50 W for 10 min could lead to complete killing of E. coli and partial inactivation of Listeria innocua on cheese (mean log reduction: 4.75 ± 0.02 and 0.72 ± 0.01, respectively). The decontamination efficacy of DBD plasma was affected by the types of microorganisms. The changes in hardness and color of cheese were unnoticeable after 10 min treatment with a power of 50 W. Overall, the results suggested that the DBD plasma can be potentially exploited to improve the food safety.
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Affiliation(s)
- Yi-Ming Huang
- Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung
| | - Chung-Kai Chen
- Department of Food Science, Tunghai University, Taichung
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Fernandes-Negreiros MM, Batista LANC, Silva Viana RL, Araujo Sabry D, Paiva AAO, Paiva WS, Machado RIA, de Sousa Junior FL, de Lima Pontes D, Vitoriano JDO, Alves Junior C, Lanzi Sassaki G, Rocha HAO. Gallic Acid-Laminarin Conjugate Is a Better Antioxidant than Sulfated or Carboxylated Laminarin. Antioxidants (Basel) 2020; 9:antiox9121192. [PMID: 33260982 PMCID: PMC7759860 DOI: 10.3390/antiox9121192] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 10/21/2020] [Revised: 11/19/2020] [Accepted: 11/21/2020] [Indexed: 12/11/2022] Open
Abstract
A 12.4 kDa laminarin (LM) composed of β(1→3)-glucan with β(1→6)-branches was extracted from brown seaweed Lobophora variegata and modified via carboxylation using dielectric barrier discharge (LMC), conjugation with gallic acid (LMG), and sulfation (LMS). Analyses of the chemical composition of LMC, LMG, and LMS yielded 11.7% carboxyl groups, 1.5% gallic acid, and 1.4% sulfate content, respectively. Antioxidant activities of native and modified laminarins were assessed using six different in vitro methods. Sulfation stopped the antioxidant activities of LM. On the other hand, carboxylation improved cooper chelation (1.2 times). LMG was found to be a more efficient antioxidant agent than LM in terms of copper chelation (1.3 times), reducing power (1.3 times), and total antioxidant capacity (80 times). Gallic acid conjugation was further confirmed using Fourier transform infrared spectroscopy (FT-IR) and one- and two-dimensional NMR spectroscopy analyses. LMG also did not induce cell death or affect the cell cycle of Madin–Darby canine kidney (MDCK) cells. On the contrary, LMG protected MDCK cells from H2O2-induced oxidative damage. Taken together, these results show that LMG has the potent antioxidant capacity, and, therefore, potential applications in pharmacological and functional food products.
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Affiliation(s)
- Marília Medeiros Fernandes-Negreiros
- Department of Biochemistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil; (M.M.F.-N.); (L.A.N.C.B.); (R.L.S.V.); (D.A.S.); (W.S.P.); (R.I.A.M.)
| | - Lucas Alighieri Neves Costa Batista
- Department of Biochemistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil; (M.M.F.-N.); (L.A.N.C.B.); (R.L.S.V.); (D.A.S.); (W.S.P.); (R.I.A.M.)
| | - Rony Lucas Silva Viana
- Department of Biochemistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil; (M.M.F.-N.); (L.A.N.C.B.); (R.L.S.V.); (D.A.S.); (W.S.P.); (R.I.A.M.)
| | - Diego Araujo Sabry
- Department of Biochemistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil; (M.M.F.-N.); (L.A.N.C.B.); (R.L.S.V.); (D.A.S.); (W.S.P.); (R.I.A.M.)
| | | | - Weslley Souza Paiva
- Department of Biochemistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil; (M.M.F.-N.); (L.A.N.C.B.); (R.L.S.V.); (D.A.S.); (W.S.P.); (R.I.A.M.)
| | - Raynara Iusk Araujo Machado
- Department of Biochemistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil; (M.M.F.-N.); (L.A.N.C.B.); (R.L.S.V.); (D.A.S.); (W.S.P.); (R.I.A.M.)
| | - Francimar Lopes de Sousa Junior
- Laboratório de Química de Coordenação e Polímeros-LQCPol, Instituto de Química, Universidade Federal do Rio Grande do Norte—UFRN, Natal-RN 59.078-970, Brazil; (F.L.d.S.J.); (D.d.L.P.)
| | - Daniel de Lima Pontes
- Laboratório de Química de Coordenação e Polímeros-LQCPol, Instituto de Química, Universidade Federal do Rio Grande do Norte—UFRN, Natal-RN 59.078-970, Brazil; (F.L.d.S.J.); (D.d.L.P.)
| | - Jussier de Oliveira Vitoriano
- Centro Integrado de Inovação Tecnológica do Semiárido (CiTED), Universidade Federal Rural do Semi-Árido, Mossoró 59.625-900, Brazil; (J.d.O.V.); (C.A.J.)
| | - Clodomiro Alves Junior
- Centro Integrado de Inovação Tecnológica do Semiárido (CiTED), Universidade Federal Rural do Semi-Árido, Mossoró 59.625-900, Brazil; (J.d.O.V.); (C.A.J.)
| | | | - Hugo Alexandre Oliveira Rocha
- Department of Biochemistry, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte 59.078-970, Brazil; (M.M.F.-N.); (L.A.N.C.B.); (R.L.S.V.); (D.A.S.); (W.S.P.); (R.I.A.M.)
- Correspondence: ; Tel.: +55-84-99999-9561
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Getnet TG, Kayama ME, Rangel EC, Cruz NC. Thin Film Deposition by Atmospheric Pressure Dielectric Barrier Discharges Containing Eugenol: Discharge and Coating Characterizations. Polymers (Basel) 2020; 12:E2692. [PMID: 33207536 PMCID: PMC7697465 DOI: 10.3390/polym12112692] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 09/05/2020] [Accepted: 09/10/2020] [Indexed: 11/16/2022] Open
Abstract
Eugenol (4-Allyl-2-methoxyphenol) is the main constituent of clove oil. In addition to being widely used as a condiment, it has been recognized as a powerful bactericide. Owing to that, Eugenol has been used in several applications including odontology and as a conservative for food products. Aiming at the development of natural bactericide coatings, in this work, using an atmospheric pressure plasma in a dielectric barrier discharge (DBD) reactor Eugenol was deposited on stainless steel substrate, with argon as a carrier gas. The discharge power supply was a transformer at 14.4 kV peak-to-peak voltage and 60 Hz frequency. Operating with a gas flow rate at 4 L/min, the active power was around 1.2 W. The maximum plasma electron temperature of the plasma with monomers was about 1.5 eV, estimated by visible emission spectroscopy using a local thermodynamic equilibrium approach. The study also comprehended the analysis of the film structure, aging, and thermal stability using infrared reflectance spectroscopy, and its thicknesses and roughness by profilometry. The thickness of the films was in the range of 1000 to 2400 nm with a roughness of up to 800 nm with good adhesion on the substrate. The FTIR result shows a stable coating with a chemical structure similar to that of the monomer. Aging analysis showed that the film does not degrade, even after exposing the film for 120 days in ambient air and for 1.0 h under a high thermal UV-lamp.
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Affiliation(s)
- Tsegaye Gashaw Getnet
- Department of Chemistry, College of Science, Bahir Dar University, Bahir Dar 79, Ethiopia
- Laboratory of Technological Plasmas, Institute of Science and Technology, Sao Paulo State University, Sorocaba, SP 18087-180, Brazil
| | - Milton E. Kayama
- Laboratory of Plasma and Applications, Sao Paulo State University, Campus at Guaratinguetá, Guaratinguetá, SP 12516-410, Brazil; (M.E.K.); (E.C.R.)
| | - Elidiane C. Rangel
- Laboratory of Plasma and Applications, Sao Paulo State University, Campus at Guaratinguetá, Guaratinguetá, SP 12516-410, Brazil; (M.E.K.); (E.C.R.)
| | - Nilson C. Cruz
- Laboratory of Plasma and Applications, Sao Paulo State University, Campus at Guaratinguetá, Guaratinguetá, SP 12516-410, Brazil; (M.E.K.); (E.C.R.)
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Keshavarzi M, Najafi G, Ahmadi Gavlighi H, Seyfi P, Ghomi H. Enhancement of polyphenolic content extraction rate with maximal antioxidant activity from green tea leaves by cold plasma. J Food Sci 2020; 85:3415-3422. [PMID: 32984963 DOI: 10.1111/1750-3841.15448] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 05/22/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 01/09/2023]
Abstract
A dielectric barrier discharge (DBD) atmospheric cold plasma was evaluated as a tool to increase the extraction rate of total phenolic content (TPC) and antioxidant activity from green tea leaves. The effects of nitrogen DBD cold plasma on changes of color and surface morphology were investigated. Optimum conditions of cold plasma treatment (treatment time and generation power) were obtained by response surface methodology. After the nitrogen DBD cold plasma at 15 W of the generation power for 15 min, the TPC and antioxidant activity of green tea increased by 41.14% and 41.06%, respectively. The catechin also increased by 103.12%. The scanning electron microscopy results showed cell ablation and ruptures of the green tea leaf surface after nitrogen DBD cold plasma treatment. PRACTICAL APPLICATION: The developed DBD cold plasma source fed by nitrogen gas can be a suitable procedure for green and useful extraction of phenolic compounds from natural sources in the food industries.
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Affiliation(s)
- Maryam Keshavarzi
- Department of Mechanical and Biosystems Engineering, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Gholamhassan Najafi
- Department of Mechanical and Biosystems Engineering, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Hassan Ahmadi Gavlighi
- Department of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Pourya Seyfi
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
| | - Hamid Ghomi
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran
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50
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Nascimento L, Gasi F, Landers R, da Silva Sobrinho A, Aragão E, Fraga M, Petraconi G, Chiappim W, Pessoa R. Physicochemical Studies on the Surface of Polyamide 6.6 Fabrics Functionalized by DBD Plasmas Operated at Atmospheric and Sub-Atmospheric Pressures. Polymers (Basel) 2020; 12:E2128. [PMID: 32961866 PMCID: PMC7569831 DOI: 10.3390/polym12092128] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 11/16/2022] Open
Abstract
This work proposes the use of a dielectric barrier discharge (DBD) reactor operating at atmospheric pressure (AP) using air and sub-atmospheric pressure (SAP) using air or argon to treat polyamide 6.6 (PA6.6) fabrics. Here, plasma dosages corresponding to 37.5 kW·min·m-2 for AP and 7.5 kW·min·m-2 for SAP in air or argon were used. The hydrophilicity aging effect property of untreated and DBD-treated PA6.6 samples was evaluated from the apparent contact angle. The surface changes in physical microstructure were studied by field emission scanning electron microscopy (FE-SEM). To prove the changes in chemical functional groups in the fibers, Fourier transform infrared spectroscopy (FTIR) was used, and the change in surface bonds was evaluated by energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). In addition, the whiteness effect was investigated by the color spectrophotometry (Datacolor) technique. The results showed that the increase in surface roughness by the SAP DBD treatment contributed to a decrease in and maintenance of the hydrophilicity of PA6.6 fabrics for longer. The SAP DBD in air treatment promoted an enhancement of the aging effect with a low plasma dosage (5-fold reduction compared with AP DBD treatment). Finally, the SAP DBD treatment using argon functionalizes the fabric surface more efficiently than DBD treatments in air.
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Affiliation(s)
- Larissa Nascimento
- Laboratório de Plasmas e Processos, Instituto Tecnológico de Aeronáutica (ITA), São José dos Campos 12228-900, Brazil; (A.d.S.S.); (G.P.)
| | - Fernando Gasi
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas, Universidade Federal do ABC (UFABC), São Bernardo do Campo 09210-170, Brazil;
| | - Richard Landers
- Instituto de Física Gleb Wataghin (IFGW), Universidade Estadual Paulista (Unicamp), Campinas 13083-859, Brazil;
| | - Argemiro da Silva Sobrinho
- Laboratório de Plasmas e Processos, Instituto Tecnológico de Aeronáutica (ITA), São José dos Campos 12228-900, Brazil; (A.d.S.S.); (G.P.)
| | - Eduardo Aragão
- Campus Integrado de Manufatura e Tecnologias, SENAI Cimatec, Salvador 41650-010, Brazil;
| | - Mariana Fraga
- Instituto de Ciência e Tecnologia (ICT), Universidade Federal de São Paulo (Unifesp), São José dos Campos 12231-280, Brazil;
| | - Gilberto Petraconi
- Laboratório de Plasmas e Processos, Instituto Tecnológico de Aeronáutica (ITA), São José dos Campos 12228-900, Brazil; (A.d.S.S.); (G.P.)
| | - William Chiappim
- i3N, Departamento de Física, Universidade de Aveiro, Campus Santiago, Aveiro 3810-193, Portugal
| | - Rodrigo Pessoa
- Laboratório de Plasmas e Processos, Instituto Tecnológico de Aeronáutica (ITA), São José dos Campos 12228-900, Brazil; (A.d.S.S.); (G.P.)
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