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Liu Y, Li D, Chen M, Sun Q, Zhang Y, Zhou J, Wang T. Radical adducts formation mechanism of CH 3CO 2∙ and CH 3CO 3∙ realized decomposition of chitosan by plasma catalyzed peracetic acid. Carbohydr Polym 2023; 318:121121. [PMID: 37479454 DOI: 10.1016/j.carbpol.2023.121121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/01/2023] [Accepted: 06/11/2023] [Indexed: 07/23/2023]
Abstract
High-molecular-weight chitosan has limited applications due to unsatisfactory solubility and hydrophilicity. Discharge plasma coupled with peracetic acid (PAA) oxidation ("plasma+PAA") realized fast depolymerization of high-molecular-weight chitosan in this study. The molecular weight of chitosan rapidly declined to 81.1 kDa from initial 682.5 kDa within 60 s of "plasma+PAA" treatment, and its reaction rate constant was 12-fold higher than single plasma oxidation. Compared with 1O2, ∙CH3, CH3O2·, and O2∙-, CH3CO2∙ and CH3CO3∙ played decisive roles in the chitosan depolymerization in the plasma+PAA system through mechanisms of radical adduct formation. The attacks of CH3CO2∙ and CH3CO3∙ destroyed the β-(1,4) glycosidic bonds and hydrogen bonds of chitosan, leading to generation of low-molecular-weight chitosan; the main chain structure of chitosan was not changed during the depolymerization process. Furthermore, the generated low-molecular-weight chitosan exhibited greater antioxidant activities than original chitosan. Overall, this study revealed the radical adduct formation mechanisms of CH3CO2∙ and CH3CO3∙ for chitosan decomposition, providing an alternative for fast depolymerization of high-molecular-weight chitosan.
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Affiliation(s)
- Yue Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, PR China
| | - Dongrui Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, PR China
| | - Mengna Chen
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, PR China
| | - Qingyuan Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, PR China
| | - Ying Zhang
- College of Information Science and Technology, Nanjing Forestry University, Nanjing 210037, PR China
| | - Jian Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, PR China
| | - Tiecheng Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, PR China.
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Ghio AJ, Soukup JM, Dailey LA, Roggli VL. Mucus increases cell iron uptake to impact the release of pro-inflammatory mediators after particle exposure. Sci Rep 2023; 13:3925. [PMID: 36894564 PMCID: PMC9998431 DOI: 10.1038/s41598-023-30335-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 02/21/2023] [Indexed: 03/11/2023] Open
Abstract
We tested the hypothesis that (1) mucus production can be included in the cell response to iron deficiency; (2) mucus binds iron and increases cell metal uptake; and subsequently (3) mucus impacts the inflammatory response to particle exposure. Using quantitative PCR, RNA for both MUC5B and MUC5AC in normal human bronchial epithelial (NHBE) cells decreased following exposures to ferric ammonium citrate (FAC). Incubation of mucus-containing material collected from the apical surface of NHBE cells grown at air-liquid interface (NHBE-MUC) and a commercially available mucin from porcine stomach (PORC-MUC) with iron demonstrated an in vitro capacity to bind metal. Inclusion of either NHBE-MUC or PORC-MUC in incubations of both BEAS-2B cells and THP1 cells increased iron uptake. Exposure to sugar acids (N-acetyl neuraminic acid, sodium alginate, sodium guluronate, and sodium hyaluronate) similarly increased cell iron uptake. Finally, increased metal transport associated with mucus was associated with a decreased release of interleukin-6 and -8, an anti-inflammatory effect, following silica exposure. We conclude that mucus production can be involved in the response to a functional iron deficiency following particle exposure and mucus can bind metal, increase cell uptake to subsequently diminish or reverse a functional iron deficiency and inflammatory response following particle exposure.
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Affiliation(s)
- Andrew J Ghio
- Human Studies Facility, US Environmental Protection Agency, 104 Mason Farm Road, Chapel Hill, NC, 27599-7315, USA.
| | - Joleen M Soukup
- Human Studies Facility, US Environmental Protection Agency, 104 Mason Farm Road, Chapel Hill, NC, 27599-7315, USA
| | - Lisa A Dailey
- Human Studies Facility, US Environmental Protection Agency, 104 Mason Farm Road, Chapel Hill, NC, 27599-7315, USA
| | - Victor L Roggli
- Department of Pathology, Duke University Medical Center, Durham, NC, USA
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Zhu X, Yang C, Jian Y, Deng H, Du Y, Shi X. Ion-responsive chitosan hydrogel actuator inspired by carrotwood seed pod. Carbohydr Polym 2022; 276:118759. [PMID: 34823783 DOI: 10.1016/j.carbpol.2021.118759] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [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: 07/20/2021] [Revised: 10/08/2021] [Accepted: 10/09/2021] [Indexed: 12/28/2022]
Abstract
Inspired by the gradient hygroscopic structure of carrotwood seed pod, patterned anisotropic structure was created in polysaccharide hydrogel by an anodic electrical writing process. Locally released Fe2+ was oxidized to Fe3+ and chelated with chitosan chains in the written area, resulting in a gradient structure in the hydrogel. The asymmetrical stress generated by the different swelling of the gradient structure enables the hydrogel to bend autonomously. The hydrogel shows opposite bending in deionized water and NaCl solution. The physicochemical properties of the hydrogel are characterized by tensile test, SEM, EDS, XRD, TGA, DTG and FT-IR. SEM and EDS show that the written hydrogel has a structural gradient and a concentration gradient of Fe3+ vertically. Moreover, anodic electrical writing increases the flexibility of chitosan hydrogel due to decreased crystallinity. This controllable electrical writing technique is convenient to create patterned anisotropic structure and provide a novel design concept for natural hydrogel actuators.
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Affiliation(s)
- Xinyi Zhu
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Chen Yang
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Yinghao Jian
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Hongbing Deng
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Yumin Du
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Xiaowen Shi
- School of Resource and Environmental Science, Hubei Engineering Center of Natural Polymers-Based Medical Materials, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
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Ghio AJ, Pavlisko EN, Roggli VL, Todd NW, Sangani RG. Cigarette Smoke Particle-Induced Lung Injury and Iron Homeostasis. Int J Chron Obstruct Pulmon Dis 2022; 17:117-140. [PMID: 35046648 PMCID: PMC8763205 DOI: 10.2147/copd.s337354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 12/06/2021] [Indexed: 11/23/2022] Open
Abstract
It is proposed that the mechanistic basis for non-neoplastic lung injury with cigarette smoking is a disruption of iron homeostasis in cells after exposure to cigarette smoke particle (CSP). Following the complexation and sequestration of intracellular iron by CSP, the host response (eg, inflammation, mucus production, and fibrosis) attempts to reverse a functional metal deficiency. Clinical manifestations of this response can present as respiratory bronchiolitis, desquamative interstitial pneumonitis, pulmonary Langerhans’ cell histiocytosis, asthma, pulmonary hypertension, chronic bronchitis, and pulmonary fibrosis. If the response is unsuccessful, the functional deficiency of iron progresses to irreversible cell death evident in emphysema and bronchiectasis. The subsequent clinical and pathological presentation is a continuum of lung injuries, which overlap and coexist with one another. Designating these non-neoplastic lung injuries after smoking as distinct disease processes fails to recognize shared relationships to each other and ultimately to CSP, as well as the common mechanistic pathway (ie, disruption of iron homeostasis).
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Affiliation(s)
- Andrew J Ghio
- Human Studies Facility, US Environmental Protection Agency, Chapel Hill, NC, 27514, USA
- Correspondence: Andrew J Ghio Human Studies Facility, US Environmental Protection Agency, 104 Mason Farm Road, Chapel Hill, NC, USA Email
| | | | | | - Nevins W Todd
- Department of Medicine, University of Maryland, Baltimore, MD, 21201, USA
| | - Rahul G Sangani
- Department of Medicine, West Virginia University, Morgantown, WV, USA
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Zhang Y, Huang X, Chen Y, Xie T, Jia L, Tan X, Yu T. Cadmium ions sequestration and transformation on confined magnesium hydroxide gel beads. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Shen C, Wang M, Xiong M, Zhang Y, Xu C, Ma C, Liu Y, Wang H, Li F. Selective adsorption and fluorescence sensing of tetracycline by Zn-mediated chitosan non-woven fabric. J Colloid Interface Sci 2021; 603:418-429. [PMID: 34197990 DOI: 10.1016/j.jcis.2021.06.091] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/03/2021] [Accepted: 06/14/2021] [Indexed: 01/22/2023]
Abstract
Nowadays, numerous studies have focused on the newly developed technologies for the thorough removal of tetracyclines (TCs). The efficient removal of trace-amount pollutants requires the development of improved materials with higher adsorption capacity and increased adsorption selectivity. Zn(II)-mediated chitosan nonwoven fabric (Zn-CSNW) adsorbent with coordination capability was explored for the effective and selective removal of TC. The adsorption of TC to Zn-CSNW could reach equilibrium in about 30 min with a maximum adsorption capacity of 195.9 mg/g. It exhibited high anti-interference performance for TC adsorption at low concentrations, with good regeneration and effective reuse. Except for citrate, organic materials similar in structure to TC or common ions in aqueous solutions did not show obvious competition for the adsorption of low concentrations of TC. Additionally, the inherent fluorescence of chitosan and the fluorescence sensitization effect of Zn2+ for TC enabled function of Zn-CSNW as an indicator of the adsorption of TC by changes in fluorescence color and intensity under UV light (365 nm). It can indicate the saturation state of the Zn-CSNW, which will bring convenience to the use of the adsorbent. The Zn(II)-mediated coordination interaction plays a vital role in both the selective recognition of TC and the fluorescence sensing of adsorption amount, demonstrating an affordable and effective strategy for the treatment of water containing low amounts of antibiotics.
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Affiliation(s)
- Chensi Shen
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Man Wang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Mingyu Xiong
- Zhejiang Environment Technology Limited Company, Hangzhou 311100, PR China
| | - Yaopeng Zhang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Chenye Xu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Chunyan Ma
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Yanbiao Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
| | - Huaping Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Fang Li
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
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Chokradjaroen C, Niu J, Panomsuwan G, Saito N. Insight on Solution Plasma in Aqueous Solution and Their Application in Modification of Chitin and Chitosan. Int J Mol Sci 2021; 22:4308. [PMID: 33919182 PMCID: PMC8122608 DOI: 10.3390/ijms22094308] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 03/30/2021] [Revised: 04/17/2021] [Accepted: 04/17/2021] [Indexed: 01/09/2023] Open
Abstract
Sustainability and environmental concerns have persuaded researchers to explore renewable materials, such as nature-derived polysaccharides, and add value by changing chemical structures with the aim to possess specific properties, like biological properties. Meanwhile, finding methods and strategies that can lower hazardous chemicals, simplify production steps, reduce time consumption, and acquire high-purified products is an important task that requires attention. To break through these issues, electrical discharging in aqueous solutions at atmospheric pressure and room temperature, referred to as the "solution plasma process", has been introduced as a novel process for modification of nature-derived polysaccharides like chitin and chitosan. This review reveals insight into the electrical discharge in aqueous solutions and scientific progress on their application in a modification of chitin and chitosan, including degradation and deacetylation. The influencing parameters in the plasma process are intensively explained in order to provide a guideline for the modification of not only chitin and chitosan but also other nature-derived polysaccharides, aiming to address economic aspects and environmental concerns.
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Affiliation(s)
- Chayanaphat Chokradjaroen
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan; (C.C.); (J.N.)
| | - Jiangqi Niu
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan; (C.C.); (J.N.)
| | - Gasidit Panomsuwan
- Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand;
| | - Nagahiro Saito
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan; (C.C.); (J.N.)
- Conjoint Research Laboratory in Nagoya University, Shinshu University, Nagoya 464-8603, Japan
- Open Innovation Platform with Enterprises, Research Institute and Academia (OPERA), Japan Science and Technology Corporation (JST), Nagoya 464-8603, Japan
- Strategic International Collaborative Research Program (SICORP), Japan Science and Technology Corporation (JST), Nagoya 464-8603, Japan
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Titov V, Nikitin D, Naumova I, Losev N, Lipatova I, Kosterin D, Pleskunov P, Perekrestov R, Sirotkin N, Khlyustova A, Agafonov A, Choukourov A. Dual-Mode Solution Plasma Processing for the Production of Chitosan/Ag Composites with the Antibacterial Effect. Materials (Basel) 2020; 13:ma13214821. [PMID: 33126681 PMCID: PMC7663649 DOI: 10.3390/ma13214821] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 01/30/2023]
Abstract
The development of novel biocompatible and biodegradable materials for medical applications has been drawing significant interest in the scientific community for years. Particularly, chitosan loaded with silver nanoparticles (Ag NPs) has a strong antimicrobial potential and could be applied, for example, as wound dressing material. In this work, chitosan/Ag NP composites were produced utilizing a single-step plasma-solution process, which is simple and environmentally friendly. An acetic solution of chitosan containing AgNO3 was treated by the direct current (DC) atmospheric pressure glow discharge, with the liquid serving as either cathode or anode. The plasma-solution system with liquid anode is more useful for the production of Ag NPs. Nevertheless, the NP size is comparable for both cases. The plasma treatment with both polarities led to chitosan degradation. The cleavage of glucosidic chains mostly occurred in the system with the liquid cathode, whereas the side oxidation reactions took place when the solution served as the anode. The oxidation processes were possibly induced by the hydrogen peroxide H2O2 efficiently formed in the last case. The composite materials produced with both polarities of liquid electrode demonstrated the bactericidal action against Gram-negative Escherichia coli, Gram-positive Staphylococcus aureus, and Gram-positive Bacillus subtilis.
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Affiliation(s)
- Valerii Titov
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia; (V.T.); (N.L.); (I.L.); (N.S.); (A.K.); (A.A.)
| | - Daniil Nikitin
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia; (V.T.); (N.L.); (I.L.); (N.S.); (A.K.); (A.A.)
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000 Prague, Czech Republic; (P.P.); (A.C.)
- Correspondence: ; Tel.: +420-773-925-355
| | - Irina Naumova
- Department of Natural Sciences, Ivanovo State Agricultural Academy, Sovetskaya 45, 153012 Ivanovo, Russia; (I.N.); (D.K.)
| | - Nikolay Losev
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia; (V.T.); (N.L.); (I.L.); (N.S.); (A.K.); (A.A.)
| | - Irina Lipatova
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia; (V.T.); (N.L.); (I.L.); (N.S.); (A.K.); (A.A.)
| | - Dmitry Kosterin
- Department of Natural Sciences, Ivanovo State Agricultural Academy, Sovetskaya 45, 153012 Ivanovo, Russia; (I.N.); (D.K.)
| | - Pavel Pleskunov
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000 Prague, Czech Republic; (P.P.); (A.C.)
| | - Roman Perekrestov
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic;
| | - Nikolay Sirotkin
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia; (V.T.); (N.L.); (I.L.); (N.S.); (A.K.); (A.A.)
| | - Anna Khlyustova
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia; (V.T.); (N.L.); (I.L.); (N.S.); (A.K.); (A.A.)
| | - Alexander Agafonov
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia; (V.T.); (N.L.); (I.L.); (N.S.); (A.K.); (A.A.)
| | - Andrei Choukourov
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 18000 Prague, Czech Republic; (P.P.); (A.C.)
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Chokradjaroen C, Rujiravanit R, Theeramunkong S, Saito N. Effect of electrical discharge plasma on cytotoxicity against cancer cells of N,O-carboxymethyl chitosan-stabilized gold nanoparticles. Carbohydr Polym 2020; 237:116162. [PMID: 32241415 DOI: 10.1016/j.carbpol.2020.116162] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 03/04/2020] [Accepted: 03/11/2020] [Indexed: 02/07/2023]
Abstract
Electrical discharge plasma in a liquid phase can generate reactive species, e.g. hydroxyl radical, leading to rapid reactions including degradation of biopolymers. In this study, the effect of plasma treatment time on physical properties and cytotoxicity against cancer cells of N,O-carboxymethyl chitosan-stabilized gold nanoparticles (CMC-AuNPs) was investigated. AuNPs were synthesized by chemical reduction of HAuCl4 in 2 % CMC solution to obtain CMC-AuNPs, before being subjected to the plasma treatment. Results showed that the plasma treatment not only led to the reduction of hydrodynamic diameters of CMC-AuNPs from 400 nm to less than 100 nm by the plasma-induced degradation of CMC but also provided the narrow size distribution of AuNPs having diameters in the range of 2-50 nm, that were existing in CMC-AuNPs. In addition, the plasma-treated CMC-AuNPs could significantly reduce the percentage of cell viability of breast cancer cells by approximately 80 % compared to the original CMC and CMC-AuNPs.
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Rujiravanit R, Kantakanun M, Chokradjaroen C, Vanichvattanadecha C, Saito N. Simultaneous deacetylation and degradation of chitin hydrogel by electrical discharge plasma using low sodium hydroxide concentrations. Carbohydr Polym 2019; 228:115377. [PMID: 31635748 DOI: 10.1016/j.carbpol.2019.115377] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 08/27/2019] [Accepted: 09/23/2019] [Indexed: 01/07/2023]
Abstract
Electrical discharge plasma occurring in a liquid phase, so called solution plasma, can generate highly active species, e.g. free radicals, which can involve in various chemical reactions, leading to less chemical uses. In this study, solution plasma was applied to deacetylation of chitin aiming to reduce the use of alkali. It was found that solution plasma could induce deacetylation of chitin hydrogels that were dispersed in MeOH/water solutions containing low NaOH concentrations (1-12%). Due to the action of free radicals, some extent of chain session of the polymer occurred during the plasma treatment. The degree of deacetylation and molecular weight of the obtained chitosan were 78% and 220 kDa, respectively, after the plasma treatment for five cycles (1 h/cycle) by using 90% MeOH/water solution containing 12% NaOH. The obtained chitosan could completely dissolve in 2% acetic acid solution and had antibacterial activities against S. aureus and E. coli.
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Affiliation(s)
- Ratana Rujiravanit
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, Thailand.
| | - Maneekarn Kantakanun
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand
| | - Chayanaphat Chokradjaroen
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, Thailand
| | - Chutima Vanichvattanadecha
- National Nanotechnology Center, National Science and Technology Development Agency, Thailand Science Park, Pathumthani, Thailand
| | - Nagahiro Saito
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
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Brasselet C, Pierre G, Dubessay P, Dols-lafargue M, Coulon J, Maupeu J, Vallet-courbin A, de Baynast H, Doco T, Michaud P, Delattre C. Modification of Chitosan for the Generation of Functional Derivatives. Applied Sciences 2019; 9:1321. [DOI: 10.3390/app9071321] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Today, chitosan (CS) is probably considered as a biofunctional polysaccharide with the most notable growth and potential for applications in various fields. The progress in chitin chemistry and the need to replace additives and non-natural polymers with functional natural-based polymers have opened many new opportunities for CS and its derivatives. Thanks to the specific reactive groups of CS and easy chemical modifications, a wide range of physico-chemical and biological properties can be obtained from this ubiquitous polysaccharide that is composed of β-(1,4)-2-acetamido-2-deoxy-d-glucose repeating units. This review is presented to share insights into multiple native/modified CSs and chitooligosaccharides (COS) associated with their functional properties. An overview will be given on bioadhesive applications, antimicrobial activities, adsorption, and chelation in the wine industry, as well as developments in medical fields or biodegradability.
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Saikia G, Ahmed K, Gogoi SR, Sharma M, Talukdar H, Islam NS. A chitosan supported peroxidovanadium(V) complex: Synthesis, characterization and application as an eco-compatible heterogeneous catalyst for selective sulfoxidation in water. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Ahmed K, Saikia G, Begum P, Gogoi SR, Sharma M, Talukdar H, Islam NS. Selective and Green Sulfoxidation in Water using a New Chitosan Supported Mo(VI) Complex as Heterogeneous Catalyst. ChemistrySelect 2018. [DOI: 10.1002/slct.201803000] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kabirun Ahmed
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Gangutri Saikia
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Pakiza Begum
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Sandhya Rani Gogoi
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Mitu Sharma
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Hiya Talukdar
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
| | - Nashreen S. Islam
- Department of Chemical Sciences; Tezpur University Napaam; Tezpur- 784028, Assam India
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15
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Chokradjaroen C, Theeramunkong S, Yui H, Saito N, Rujiravanit R. Cytotoxicity against cancer cells of chitosan oligosaccharides prepared from chitosan powder degraded by electrical discharge plasma. Carbohydr Polym 2018; 201:20-30. [PMID: 30241811 DOI: 10.1016/j.carbpol.2018.08.037] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [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: 03/21/2018] [Revised: 08/09/2018] [Accepted: 08/09/2018] [Indexed: 02/02/2023]
Abstract
Chitosan oligosaccharides, which obtain from degradation of chitosan, possess some interesting molecular weight-dependent biological properties, especially anticancer activity. Therefore, the conversion of chitosan to chitosan oligosaccharides with specific molecular weight has been continuously investigated in order to find effective strategies that can achieve both economic feasibility and environmental concerns. In this study, a novel process was developed to heterogeneously degrade chitosan powder by highly active species generated by electrical discharge plasma in a dilute salt solution (0.02 M) without the addition of other chemicals. The degradation rate obtained from the proposed process was comparable to that obtained from some other methods with the addition of acids and oxidizing agents. Separation of the water-soluble degraded products containing chitosan oligosaccharides from the reaction solution was simply done by filtration. The obtained chitosan oligosaccharides were further evaluated for an influence of their molecular weights on cytotoxicity against cancer cells and the selectivity toward cancer and normal cells.
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Affiliation(s)
| | | | - Hiroharu Yui
- Department of Chemistry, Tokyo University of Science, Tokyo 162-8601, Japan; Water Frontier Science & Technology Research Center, Tokyo University of Science, Tokyo 162-8601, Japan
| | - Nagahiro Saito
- Department of Chemical Systems Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Ratana Rujiravanit
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand.
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16
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Prasertsung I, Chutinate P, Watthanaphanit A, Saito N, Damrongsakkul S. Conversion of cellulose into reducing sugar by solution plasma process (SPP). Carbohydr Polym 2017; 172:230-236. [PMID: 28606530 DOI: 10.1016/j.carbpol.2017.05.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 12/07/2016] [Revised: 05/05/2017] [Accepted: 05/07/2017] [Indexed: 10/19/2022]
Abstract
In the present study, cellulose colloids are treated with the solution plasma process in order to prepare reducing sugar. The investigated parameters are treatment time, type of electrodes, and applied pulse frequency of the bipolar supply. The reducing sugar was characterized by DNS method and the%yield of total reducing sugar (TRS) was then calculated. The crystal structure and chemical structure of plasma-treated cellulose was measured by XRD and FT-IR, respectively. The%yield of TRS was greatly enhanced by solution plasma treatment using Fe electrode. SEM and TEM micrograph indicated that Fe electrode yield the incidental Fe nanoparticles, hypothesized to catalyze the cellulose degradation during SPP treatment. The crystal structure of cellulose was destroyed. Solution plasma treatment of cellulose using Fe electrode at the high applied frequency pulse provided the highest%TRS.
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Affiliation(s)
- I Prasertsung
- Chemical Engineering Program, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand; Plasma Technology and Nuclear Fusion Research Unit, Chulalongkorn University, Bangkok 10330, Thailand.
| | - P Chutinate
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Plasma Technology and Nuclear Fusion Research Unit, Chulalongkorn University, Bangkok 10330, Thailand
| | - A Watthanaphanit
- Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - N Saito
- Department of Materials, Physics, and Energy Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
| | - S Damrongsakkul
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Plasma Technology and Nuclear Fusion Research Unit, Chulalongkorn University, Bangkok 10330, Thailand.
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17
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Chokradjaroen C, Rujiravanit R, Watthanaphanit A, Theeramunkong S, Saito N, Yamashita K, Arakawa R. Enhanced degradation of chitosan by applying plasma treatment in combination with oxidizing agents for potential use as an anticancer agent. Carbohydr Polym 2017; 167:1-11. [PMID: 28433142 DOI: 10.1016/j.carbpol.2017.03.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [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: 12/09/2016] [Revised: 03/02/2017] [Accepted: 03/02/2017] [Indexed: 11/28/2022]
Abstract
Solution plasma (SP) treatment in combination with oxidizing agents, i.e., hydrogen peroxide (H2O2), potassium persulfate (K2S2O8) and sodium nitrite (NaNO2) were adopted to chitosan degradation in order to achieve fast degradation rate, low chemicals used and high yield of low-molecular-weight chitosan and chitooligosaccharide (COS). Among the studied oxidizing agents, H2O2 was found to be the best choice in terms of appreciable molecular weight reduction without major change in chemical structure of the degraded products of chitosan. By the combination with SP treatment, dilute solution of H2O2 (4-60mM) was required for effective degradation of chitosan. The combination of SP treatment and dilute solution of H2O2 (60mM) resulted in the great reduction of molecular weight of chitosan and water-soluble chitosan was obtained as a major product. The resulting water-soluble chitosan was precipitated to obtain COS. An inhibitory effect against cervical cancer cell line (HeLa cells) of COS was also examined.
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Affiliation(s)
| | - Ratana Rujiravanit
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand; NU-PPC Plasma Chemical Technology Laboratory, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Anyarat Watthanaphanit
- Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | | | - Nagahiro Saito
- Department of Materials, Physics and Energy Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Kazuko Yamashita
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Osaka 564-8680, Japan
| | - Ryuichi Arakawa
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Osaka 564-8680, Japan
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18
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Alves HJ, Furman M, Kugelmeier CL, Oliveira CRD, Bach VR, Lupatini KN, Neves AC, Arantes MK. Effect of shrimp shells milling on the molar mass of chitosan. Polímeros 2017. [DOI: 10.1590/0104-1428.2354] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Morishita T, Ueno T, Panomsuwan G, Hieda J, Yoshida A, Bratescu MA, Saito N. Fastest Formation Routes of Nanocarbons in Solution Plasma Processes. Sci Rep 2016; 6:36880. [PMID: 27841288 PMCID: PMC5107960 DOI: 10.1038/srep36880] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 10/24/2016] [Indexed: 12/16/2022] Open
Abstract
Although solution-plasma processing enables room-temperature synthesis of nanocarbons, the underlying mechanisms are not well understood. We investigated the routes of solution-plasma-induced nanocarbon formation from hexane, hexadecane, cyclohexane, and benzene. The synthesis rate from benzene was the highest. However, the nanocarbons from linear molecules were more crystalline than those from ring molecules. Linear molecules decomposed into shorter olefins, whereas ring molecules were reconstructed in the plasma. In the saturated ring molecules, C-H dissociation proceeded, followed by conversion into unsaturated ring molecules. However, unsaturated ring molecules were directly polymerized through cation radicals, such as benzene radical cation, and were converted into two- and three-ring molecules at the plasma-solution interface. The nanocarbons from linear molecules were synthesized in plasma from small molecules such as C2 under heat; the obtained products were the same as those obtained via pyrolysis synthesis. Conversely, the nanocarbons obtained from ring molecules were directly synthesized through an intermediate, such as benzene radical cation, at the interface between plasma and solution, resulting in the same products as those obtained via polymerization. These two different reaction fields provide a reasonable explanation for the fastest synthesis rate observed in the case of benzene.
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Affiliation(s)
- Tetsunori Morishita
- Department of Material Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Tomonaga Ueno
- Department of Material Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
- NU- PPC Plasma Chemical Technology Center, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok
10330, Thailand
- CREST, JST, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Gasidit Panomsuwan
- NU- PPC Plasma Chemical Technology Center, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok
10330, Thailand
| | - Junko Hieda
- Department of Material Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Akihito Yoshida
- Department of Material Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Maria Antoaneta Bratescu
- Department of Material Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Nagahiro Saito
- Department of Material Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
- NU- PPC Plasma Chemical Technology Center, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok
10330, Thailand
- CREST, JST, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
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20
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Titov VA, Lipatova IM, Mezina EA, Kuz’micheva LA. Plasma-chemical destruction and modification of chitosan in solution. High Energy Chem 2016. [DOI: 10.1134/s0018143916050167] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Nikitin D, Choukourov A, Titov V, Kuzmicheva L, Lipatova I, Mezina E, Aleksandriiskii V, Shelemin A, Khalakhan I, Slavinska D, Biederman H. In situ coupling of chitosan onto polypropylene foils by an Atmospheric Pressure Air Glow Discharge with a liquid cathode. Carbohydr Polym 2016; 154:30-9. [PMID: 27577893 DOI: 10.1016/j.carbpol.2016.08.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 08/08/2016] [Accepted: 08/08/2016] [Indexed: 11/15/2022]
Abstract
Atmospheric air plasma treatment of chitosan solutions leads to degradation of chitosan molecules by OH radicals and is accompanied by a predominant cleavage of glycosidic linkages and by a decrease of the molecular weight. The degradation proceeds via first order kinetics with the rate constant of (5.73±0.22)×10(-6)s(-1) and the energetic yield of chitosan bond scission of (2.4±0.2)×10(-8)mol/J. Products of degradation together with intact chitosan molecules adsorb and form coatings on polypropylene foils immersed into the solution that is being plasma treated. The plasma treatment results in strong binding of chitosan to polypropylene due to the formation of covalent bonds between the activated polymer surface and chitosan molecules. Plasma-driven crosslinking is responsible for the accumulation of compressive stress which leads to the development of buckling instabilities in the chitosan coatings.
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Affiliation(s)
- D Nikitin
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia; Charles University in Prague, Faculty of Mathematics and Physics, Department of Macromolecular Physics, V Holešovičkách 2, 18000 Prague, Czech Republic
| | - A Choukourov
- Charles University in Prague, Faculty of Mathematics and Physics, Department of Macromolecular Physics, V Holešovičkách 2, 18000 Prague, Czech Republic.
| | - V Titov
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia
| | - L Kuzmicheva
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia
| | - I Lipatova
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia
| | - E Mezina
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia
| | - V Aleksandriiskii
- G. A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, Akademicheskaya 1, 153045 Ivanovo, Russia
| | - A Shelemin
- Charles University in Prague, Faculty of Mathematics and Physics, Department of Macromolecular Physics, V Holešovičkách 2, 18000 Prague, Czech Republic
| | - I Khalakhan
- Charles University in Prague, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, V Holešovičkách 2, 18000 Prague, Czech Republic
| | - D Slavinska
- Charles University in Prague, Faculty of Mathematics and Physics, Department of Macromolecular Physics, V Holešovičkách 2, 18000 Prague, Czech Republic
| | - H Biederman
- Charles University in Prague, Faculty of Mathematics and Physics, Department of Macromolecular Physics, V Holešovičkách 2, 18000 Prague, Czech Republic
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22
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Janpetch N, Saito N, Rujiravanit R. Fabrication of bacterial cellulose-ZnO composite via solution plasma process for antibacterial applications. Carbohydr Polym 2016; 148:335-44. [PMID: 27185147 DOI: 10.1016/j.carbpol.2016.04.066] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [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: 02/11/2016] [Revised: 04/09/2016] [Accepted: 04/15/2016] [Indexed: 01/19/2023]
Abstract
Zinc oxide (ZnO) was successfully synthesized by applying a solution plasma, a plasma discharge in a liquid phase, without the addition of a reducing agent and simultaneously deposited into a bacterial cellulose pellicle that functioned as a template. By the reasons of its nano-sized structure as well as favorable porous configuration, the BC pellicle has been proved to be a splendid upholding template for the coordination of ZnO. In addition, the ZnO-deposited BC composites demonstrated strong antibacterial activity without a photocatalytic reaction against both Staphylococcus aureus and Escherichia coli. Hence, the ZnO-deposited BC composites can be used as an antibacterial material in wound dressing and water disinfection applications.
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Affiliation(s)
- Nattakammala Janpetch
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nagahiro Saito
- Department of Materials, Physics and Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Ratana Rujiravanit
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand; NU-PPC Plasma Chemical Technology Laboratory, Chulalongkorn University, Bangkok, Thailand; Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand.
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23
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Ma Y, Wang M, Li D, Pan H, Liu H. Physicochemical Properties, Characterization, and Antioxidant Activity of Sodium Ferric Gluconate Complex. FSTR 2016. [DOI: 10.3136/fstr.22.639] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Yixuan Ma
- Chongqing Engineering Research Center for Pharmaceutical Process and Quality Control, College of Pharmaceutical Sciences, Southwest University
| | - Miao Wang
- Chongqing Engineering Research Center for Pharmaceutical Process and Quality Control, College of Pharmaceutical Sciences, Southwest University
| | - Dan Li
- Chongqing Engineering Research Center for Pharmaceutical Process and Quality Control, College of Pharmaceutical Sciences, Southwest University
| | - Hongchun Pan
- Chongqing Engineering Research Center for Pharmaceutical Process and Quality Control, College of Pharmaceutical Sciences, Southwest University
| | - Hong Liu
- Chongqing Engineering Research Center for Pharmaceutical Process and Quality Control, College of Pharmaceutical Sciences, Southwest University
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24
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Li S, Yang J, Rashid S, Shen C, Liu J. Al-Doped chitosan nonwoven in a novel adsorption reactor with a cylindrical sleeve for dye removal: performance and mechanism of action. RSC Adv 2016. [DOI: 10.1039/c6ra21369c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
To overcome the inconvenience of solid/liquid separation of powdered adsorbents, a novel adsorption reactor with a cylinder sleeve was designed to match the textile-pattern of chitosan nonwoven for the sake of easy separation and simple operation.
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Affiliation(s)
- Su Li
- College of Environmental Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Jing Yang
- College of Environmental Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Sadia Rashid
- College of Environmental Science and Engineering
- Donghua University
- Shanghai 201620
- China
| | - Chensi Shen
- College of Environmental Science and Engineering
- Donghua University
- Shanghai 201620
- China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry
| | - Jianshe Liu
- College of Environmental Science and Engineering
- Donghua University
- Shanghai 201620
- China
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry
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Tantiplapol T, Singsawat Y, Narongsil N, Damrongsakkul S, Saito N, Prasertsung I. Influences of solution plasma conditions on degradation rate and properties of chitosan. INNOV FOOD SCI EMERG 2015. [DOI: 10.1016/j.ifset.2015.09.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Wang Z, Zheng L, Li C, Zhang D, Xiao Y, Guan G, Zhu W. Modification of chitosan with monomethyl fumaric acid in an ionic liquid solution. Carbohydr Polym 2015; 117:973-979. [DOI: 10.1016/j.carbpol.2014.10.021] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 10/05/2014] [Accepted: 10/06/2014] [Indexed: 11/30/2022]
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