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Wang L, Porto CL, Palumbo F, Modic M, Cvelbar U, Ghobeira R, De Geyter N, De Vrieze M, Kos Š, Serša G, Leys C, Nikiforov A. Synthesis of antibacterial composite coating containing nanocapsules in an atmospheric pressure plasma. Mater Sci Eng C Mater Biol Appl 2020; 119:111496. [PMID: 33321597 DOI: 10.1016/j.msec.2020.111496] [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] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 08/31/2020] [Accepted: 09/06/2020] [Indexed: 12/17/2022]
Abstract
Antibacterial coating is an important strategy preventing bacterial colonization and biofilm formation. One-step synthesis of nanocapsule-containing antibacterial coatings with controlled release of Ag+ ions was achieved in the current work by aerosol-assisted atmospheric pressure plasma deposition. The experimental parameters of deposition including the discharge power, silver nitrate concentration, aerosol flow rate, continuous and pulsed mode of operation were studied in order to analyze their effects on surface morphology and chemical composition of the coating. Formation of nanocapsules embedded in the polymeric coating was observed. A core-shell structure was found for nanocapsule with silver in the core and polymer in the shell. Antibacterial coatings on polyethylene terephthalate film were studied in terms of Ag+ ion release, antibacterial properties against Escherichia coli and Staphylococcus aureus, and cytotoxicity with murine fibroblasts. Two-phase release kinetics of Ag+ ions was observed as initially a short-term burst release followed by a long-term slow release. It was revealed that high antibacterial efficiency of the coatings deposited on polyethylene terephthalate films can be coupled with low cytotoxicity. These biocompatible antibacterial coatings are very promising in different fields including biological applications.
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Affiliation(s)
- Lei Wang
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium.
| | - Chiara Lo Porto
- Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy
| | - Fabio Palumbo
- Institute of Nanotechnology, National Research Council of Italy, Department of Chemistry, University of Bari "Aldo Moro", Via Orabona 4, 70126 Bari, Italy.
| | - Martina Modic
- Laboratory for Gaseous Electronics, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Uroš Cvelbar
- Laboratory for Gaseous Electronics, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Rouba Ghobeira
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Nathalie De Geyter
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | | | - Špela Kos
- Department of Experimental Oncology, Institute of Oncology Ljubljana, Zaloška cesta 2, 1000 Ljubljana, Slovenia
| | - Gregor Serša
- Department of Experimental Oncology, Institute of Oncology Ljubljana, Zaloška cesta 2, 1000 Ljubljana, Slovenia
| | - Christophe Leys
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
| | - Anton Nikiforov
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Ghent, Belgium
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Ribeiro AI, Modic M, Cvelbar U, Dinescu G, Mitu B, Nikiforov A, Leys C, Kuchakova I, De Vrieze M, Felgueiras HP, Souto AP, Zille A. Effect of Dispersion Solvent on the Deposition of PVP-Silver Nanoparticles onto DBD PlasmaTreated Polyamide 6,6 Fabric and Its Antimicrobial Efficiency. Nanomaterials (Basel) 2020; 10:nano10040607. [PMID: 32224934 PMCID: PMC7221693 DOI: 10.3390/nano10040607] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 02/19/2020] [Revised: 03/16/2020] [Accepted: 03/21/2020] [Indexed: 01/02/2023]
Abstract
Polyvinylpyrrolidone-coated silver nanoparticles (PVP-AgNPs) dispersed in ethanol, water and water/alginate were used to functionalize untreated and dielectric barrier discharge (DBD) plasma-treated polyamide 6,6 fabric (PA66). The PVP-AgNPs dispersions were deposited onto PA66 by spray and exhaustion methods. The exhaustion method showed a higher amount of deposited AgNPs. Water and water-alginate dispersions presented similar results. Ethanol amphiphilic character showed more affinity to AgNPs and PA66 fabric, allowing better uniform surface distribution of nanoparticles. Antimicrobial effect in E. coli showed good results in all the samples obtained by exhaustion method but using spray method only the DBD plasma treated samples displayed antimicrobial activity (log reduction of 5). Despite the better distribution achieved using ethanol as a solvent, water dispersion samples with DBD plasma treatment displayed better antimicrobial activity against S. aureus bacteria in both exhaustion (log reduction of 1.9) and spray (methods log reduction of 1.6) due to the different oxidation states of PA66 surface interacting with PVP-AgNPs, as demonstrated by X-ray Photoelectron Spectroscopy (XPS) analysis. Spray method using the water-suspended PVP-AgNPs onto DBD plasma-treated samples is much faster, less agglomerating and uses 10 times less PVP-AgNPs dispersion than the exhaustion method to obtain an antimicrobial effect in both S. aureus and E. coli.
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Affiliation(s)
- Ana I. Ribeiro
- 2C2T - Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; (A.I.R.); (H.P.F.); (A.P.S.)
| | - Martina Modic
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia; (M.M.); (U.C.)
| | - Uros Cvelbar
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia; (M.M.); (U.C.)
| | - Gheorghe Dinescu
- National Institute for Lasers, Plasma and Radiation Physics, Strada Atomiștilor 409, 077125 Măgurele, Romania; (G.D.); (B.M.)
| | - Bogdana Mitu
- National Institute for Lasers, Plasma and Radiation Physics, Strada Atomiștilor 409, 077125 Măgurele, Romania; (G.D.); (B.M.)
| | - Anton Nikiforov
- Centexbel Ghent, Technologie Park 7, 9052 Ghent, Belgium; (A.N.); (C.L.); (I.K.); (M.D.V.)
| | - Christophe Leys
- Centexbel Ghent, Technologie Park 7, 9052 Ghent, Belgium; (A.N.); (C.L.); (I.K.); (M.D.V.)
| | - Iryna Kuchakova
- Centexbel Ghent, Technologie Park 7, 9052 Ghent, Belgium; (A.N.); (C.L.); (I.K.); (M.D.V.)
| | - Mike De Vrieze
- Centexbel Ghent, Technologie Park 7, 9052 Ghent, Belgium; (A.N.); (C.L.); (I.K.); (M.D.V.)
| | - Helena P. Felgueiras
- 2C2T - Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; (A.I.R.); (H.P.F.); (A.P.S.)
| | - António P. Souto
- 2C2T - Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; (A.I.R.); (H.P.F.); (A.P.S.)
| | - Andrea Zille
- 2C2T - Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; (A.I.R.); (H.P.F.); (A.P.S.)
- Correspondence:
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Kuchakova I, Ionita MD, Ionita ER, Lazea-Stoyanova A, Brajnicov S, Mitu B, Dinescu G, De Vrieze M, Cvelbar U, Zille A, Leys C, Yu Nikiforov A. Atmospheric Pressure Plasma Deposition of Organosilicon Thin Films by Direct Current and Radio-frequency Plasma Jets. Materials (Basel) 2020; 13:ma13061296. [PMID: 32183006 PMCID: PMC7143598 DOI: 10.3390/ma13061296] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 11/16/2022]
Abstract
Thin film deposition with atmospheric pressure plasmas is highly interesting for industrial demands and scientific interests in the field of biomaterials. However, the engineering of high-quality films by high-pressure plasmas with precise control over morphology and surface chemistry still poses a challenge. The two types of atmospheric-pressure plasma depositions of organosilicon films by the direct and indirect injection of hexamethyldisiloxane (HMDSO) precursor into a plasma region were chosen and compared in terms of the films chemical composition and morphology to address this. Although different methods of plasma excitation were used, the deposition of inorganic films with above 98% of SiO2 content was achieved for both cases. The chemical structure of the films was insignificantly dependent on the substrate type. The deposition in the afterglow of the DC discharge resulted in a soft film with high roughness, whereas RF plasma deposition led to a smoother film. In the case of the RF plasma deposition on polymeric materials resulted in films with delamination and cracks formation. Lastly, despite some material limitations, both deposition methods demonstrated significant potential for SiOx thin-films preparation for a variety of bio-related substrates, including glass, ceramics, metals, and polymers.
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Affiliation(s)
- Iryna Kuchakova
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Gent, Belgium; (C.L.); (A.Y.N.)
- Correspondence: (I.K.); (E.-R.I.)
| | - Maria Daniela Ionita
- National Institute for Lasers, Plasma and Radiation Physics, Magurele-Bucharest, MG-36, RO 077125 Ilfov, Romania; (M.D.I.); (A.L.-S.); (S.B.); (B.M.); (G.D.)
| | - Eusebiu-Rosini Ionita
- National Institute for Lasers, Plasma and Radiation Physics, Magurele-Bucharest, MG-36, RO 077125 Ilfov, Romania; (M.D.I.); (A.L.-S.); (S.B.); (B.M.); (G.D.)
- Correspondence: (I.K.); (E.-R.I.)
| | - Andrada Lazea-Stoyanova
- National Institute for Lasers, Plasma and Radiation Physics, Magurele-Bucharest, MG-36, RO 077125 Ilfov, Romania; (M.D.I.); (A.L.-S.); (S.B.); (B.M.); (G.D.)
| | - Simona Brajnicov
- National Institute for Lasers, Plasma and Radiation Physics, Magurele-Bucharest, MG-36, RO 077125 Ilfov, Romania; (M.D.I.); (A.L.-S.); (S.B.); (B.M.); (G.D.)
| | - Bogdana Mitu
- National Institute for Lasers, Plasma and Radiation Physics, Magurele-Bucharest, MG-36, RO 077125 Ilfov, Romania; (M.D.I.); (A.L.-S.); (S.B.); (B.M.); (G.D.)
| | - Gheorghe Dinescu
- National Institute for Lasers, Plasma and Radiation Physics, Magurele-Bucharest, MG-36, RO 077125 Ilfov, Romania; (M.D.I.); (A.L.-S.); (S.B.); (B.M.); (G.D.)
| | - Mike De Vrieze
- Centexbel, Technologiepark-Zwijnaarde 70, 9052 Gent, Belgium;
| | - Uroš Cvelbar
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia;
| | - Andrea Zille
- 2C2T-Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal;
| | - Christophe Leys
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Gent, Belgium; (C.L.); (A.Y.N.)
| | - Anton Yu Nikiforov
- Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000 Gent, Belgium; (C.L.); (A.Y.N.)
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Doan CD, To CM, De Vrieze M, Lynen F, Danthine S, Brown A, Dewettinck K, Patel AR. Chemical profiling of the major components in natural waxes to elucidate their role in liquid oil structuring. Food Chem 2016; 214:717-725. [PMID: 27507530 DOI: 10.1016/j.foodchem.2016.07.123] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [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: 10/28/2015] [Revised: 06/19/2016] [Accepted: 07/20/2016] [Indexed: 11/26/2022]
Abstract
Elucidating the composition of waxes is of utmost importance to explain their behavior in liquid oil structuring. The chemical components (hydrocarbons - HCs, free fatty acids - FFAs, free fatty alcohols - FALs and wax esters - WEs) of natural waxes were analyzed using HPLC-ELSD and GC-MS followed by evaluation of their oil structuring properties. The gel strength, including the average storage modulus and oscillation yield stress, displayed a negative correlation with FALs and a positive correlation with HCs, FFAs and WEs. The components dictating the gel strength are HCs, FFAs and WEs in a descending order of importance. The consistency of the oleogels increased with the increasing amount of FFAs and HCs and the decreasing amount of WEs and FALs. The presence of more WEs results in a strong but brittle gel with a high initial flow yield stress. We believe these results might be useful in selecting the right waxes to combine in certain fat-based food products.
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Affiliation(s)
- Chi Diem Doan
- Laboratory of Food Technology and Engineering, Faculty of Bioscience Engineering, Ghent University, 653 Coupure Links, 9000 Ghent, Belgium; Department of Food Technology, College of Agriculture and Applied Science, Cantho University, Viet Nam.
| | - Chak Ming To
- Laboratory of Food Technology and Engineering, Faculty of Bioscience Engineering, Ghent University, 653 Coupure Links, 9000 Ghent, Belgium
| | - Mike De Vrieze
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Faculty of Science, Ghent University, 281 Krijgslaan, 9000 Ghent, Belgium
| | - Frederic Lynen
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Faculty of Science, Ghent University, 281 Krijgslaan, 9000 Ghent, Belgium
| | - Sabine Danthine
- Department of Food Technology, Gembloux Agricultural University, Passage des Déportés 2, B-5030 Gembloux, Belgium
| | - Allison Brown
- Laboratory of Food Technology and Engineering, Faculty of Bioscience Engineering, Ghent University, 653 Coupure Links, 9000 Ghent, Belgium
| | - Koen Dewettinck
- Laboratory of Food Technology and Engineering, Faculty of Bioscience Engineering, Ghent University, 653 Coupure Links, 9000 Ghent, Belgium
| | - Ashok R Patel
- Laboratory of Food Technology and Engineering, Faculty of Bioscience Engineering, Ghent University, 653 Coupure Links, 9000 Ghent, Belgium.
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Malengier B, Goessens T, Mafo FF, De Vrieze M, Van Langenhove L, Wanji S, Lynen F. Model-based determination of the influence of textile fabric on bioassay analysis and the effectiveness of a textile slow-release system of DEET in mosquito control. Pest Manag Sci 2015; 71:1165-1174. [PMID: 25200386 DOI: 10.1002/ps.3902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 08/29/2014] [Accepted: 09/02/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Determining the effectiveness of a product in repelling mosquitoes or other flying insects is a difficult task. One approach is to use a bioassay with textile fabric. We investigated the role of the textile substrate in a bioassay with a numerical model, and compared the outcome with known results for DEET. The model was then used to determine the effectiveness of textile slow-release formulations based on coatings, and results were compared with those of a field study in the Cameroon. Slow-release formulations are difficult to evaluate with standard tests, as the compound needs a build-up time not present in these tests. RESULTS We found excellent correspondence between the model and the known DEET results without matching parameters. Slow-release approaches are deemed possible but have several drawbacks. Modelling can help in identifying optimal use conditions. The field test with a slow-release system performed better than anticipated by the model, with initially more than 90% repellency. DEET-coated textile was considered not to be marketable, however. CONCLUSION We advise that bioassays characterise in more detail the type of textile fabric used so as to allow conclusions to be drawn by textile modelling. As regards coated-textile slow-release systems, more research is needed. We nevertheless advise usage mainly at entry points, e.g. as scrims.
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Affiliation(s)
- Benny Malengier
- Department of Textiles, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | - Tineke Goessens
- Research Group for Numerical Analysis and Mathematical Modelling, Department of Mathematical Analysis, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | - Flora F Mafo
- University of Yaoundé I, Yaoundé, Cameroon
- Research Foundation for Tropical Diseases and Environment, University of Buea, Buea, Cameroon
| | - Mike De Vrieze
- Department of Organic Chemistry, Faculty of Science, Ghent University, Ghent, Belgium
| | - Lieva Van Langenhove
- Department of Textiles, Faculty of Engineering and Architecture, Ghent University, Ghent, Belgium
| | - Samuel Wanji
- Research Foundation for Tropical Diseases and Environment, University of Buea, Buea, Cameroon
| | - Frederic Lynen
- Department of Organic Chemistry, Faculty of Science, Ghent University, Ghent, Belgium
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De Vrieze M, Verzele D, Szucs R, Sandra P, Lynen F. Evaluation of sphingomyelin, cholester, and phosphatidylcholine-based immobilized artificial membrane liquid chromatography to predict drug penetration across the blood-brain barrier. Anal Bioanal Chem 2014; 406:6179-88. [PMID: 25124450 DOI: 10.1007/s00216-014-8054-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 07/17/2014] [Accepted: 07/18/2014] [Indexed: 11/28/2022]
Abstract
Over the past decades, several in vitro methods have been tested for their ability to predict drug penetration across the blood-brain barrier. So far, in high-performance liquid chromatography, most attention has been paid to micellar liquid chromatography and immobilized artificial membrane (IAM) LC. IAMLC has been described as a viable approach, since the stationary phase emulates the lipid environment of a cell membrane. However, research in IAMLC has almost exclusively been limited to phosphatidylcholine (PC)-based stationary phases, even though PC is only one of the lipids present in cell membranes. In this article, sphingomyelin and cholester stationary phases have been tested for the first time towards their ability to predict drug penetration across the blood-brain barrier. Upon comparison with the PC stationary phase, the sphingomyelin- and cholester-based columns depict similar predictive performance. Combining data from the different stationary phases did not lead to improvements of the models.
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Affiliation(s)
- Mike De Vrieze
- Separation Science Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4bis, 9000, Ghent, Belgium
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De Vrieze M, Lynen F, Chen K, Szucs R, Sandra P. Predicting drug penetration across the blood–brain barrier: comparison of micellar liquid chromatography and immobilized artificial membrane liquid chromatography. Anal Bioanal Chem 2013; 405:6029-41. [DOI: 10.1007/s00216-013-7015-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 04/20/2013] [Accepted: 04/23/2013] [Indexed: 12/01/2022]
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Verzele D, Lynen F, Vrieze MD, Wright AG, Hanna-Brown M, Sandra P. Development of the first sphingomyelin biomimetic stationary phase for immobilized artificial membrane (IAM) chromatography. Chem Commun (Camb) 2012; 48:1162-4. [DOI: 10.1039/c2cc16872c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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