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Scheau C, Pop CR, Rotar AM, Socaci S, Mălinaș A, Zăhan M, Coldea ȘD, Pop VC, Fit NI, Chirilă F, Criveanu HR, Oltean I. The Influence of Physical Fields (Magnetic and Electric) and LASER Exposure on the Composition and Bioactivity of Cinnamon Bark, Patchouli, and Geranium Essential Oils. PLANTS (BASEL, SWITZERLAND) 2024; 13:1992. [PMID: 39065519 PMCID: PMC11281253 DOI: 10.3390/plants13141992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/18/2024] [Accepted: 07/19/2024] [Indexed: 07/28/2024]
Abstract
In recent years, essential oils (EOs) have received increased attention from the research community, and the EOs of cinnamon, patchouli, and geranium have become highly recognized for their antibacterial, antifungal, antiviral, and antioxidant effects. Due to these properties, they have become valuable and promising candidates for addressing the worldwide threat of antimicrobial resistance and other diseases. Simultaneously, studies have revealed promising new results regarding the effects of physical fields (magnetic and electric) and LASER (MEL) exposure on seed germination, plant growth, biomass accumulation, and the yield and composition of EOs. In this frame, the present study aims to investigate the influence of MEL treatments on cinnamon, patchouli, and geranium EOs, by specifically examining their composition, antimicrobial properties, and antioxidant activities. Results showed that the magnetic influence has improved the potency of patchouli EO against L. monocytogenes, S. enteritidis, and P. aeruginosa, while the antimicrobial activity of cinnamon EO against L. monocytogenes was enhanced by the electric and laser treatments. All exposures have increased the antifungal effect of geranium EO against C. albicans. The antioxidant activity was not modified by any of the treatments. These findings could potentially pave the way for a deeper understanding of the efficiency, the mechanisms of action, and the utilization of EOs, offering new insights for further exploration and application.
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Affiliation(s)
- Camelia Scheau
- PhD School of Agricultural Engineering Sciences, USAMV Cluj-Napoca, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania;
| | - Carmen Rodica Pop
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 64, Floresti Street, 400509 Cluj-Napoca, Romania; (C.R.P.); (A.M.R.); (S.S.)
| | - Ancuța Mihaela Rotar
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 64, Floresti Street, 400509 Cluj-Napoca, Romania; (C.R.P.); (A.M.R.); (S.S.)
| | - Sonia Socaci
- Department of Food Science, Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 64, Floresti Street, 400509 Cluj-Napoca, Romania; (C.R.P.); (A.M.R.); (S.S.)
| | - Anamaria Mălinaș
- Department of Environmental Protection and Engineering, Faculty of Agriculture, University of Agricultural Sciences and Veterinary Medicine, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania
| | - Marius Zăhan
- Faculty of Animal Science and Biotechnology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania; (M.Z.); (Ș.D.C.)
| | - Ștefania Dana Coldea
- Faculty of Animal Science and Biotechnology, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania; (M.Z.); (Ș.D.C.)
| | - Viorel Cornel Pop
- Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine, 3-5, Mănăştur Street, 400372 Cluj-Napoca, Romania
| | - Nicodim Iosif Fit
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5, Mănăstur Street, 400372 Cluj-Napoca, Romania; (N.I.F.); (F.C.)
| | - Flore Chirilă
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5, Mănăstur Street, 400372 Cluj-Napoca, Romania; (N.I.F.); (F.C.)
| | - Horia Radu Criveanu
- Faculty of Horticulture, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5, Mănăstur Street, 400372 Cluj-Napoca, Romania;
| | - Ion Oltean
- Department of Plant Protection, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, 3-5, Mănăstur Street, 400372 Cluj-Napoca, Romania;
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Naseer RD, Muhammad F, Aslam B, Faisal MN. Anti-arthritic effects of geranium essential oil loaded chitosan nanoparticles in Freund's complete adjuvant induced arthritic rats through down-regulation of inflammatory cytokines. Inflammopharmacology 2023:10.1007/s10787-023-01233-w. [PMID: 37231284 DOI: 10.1007/s10787-023-01233-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 03/27/2023] [Indexed: 05/27/2023]
Abstract
Geranium essential oil (GEO) has been widely used in aromatherapy and traditional medicines. Nanoencapsulation, a novel technique has emerged to overcome the environmental degradation and less oral bioavailability of essential oils. This work was undertaken to encapsulate geranium essential oil in chitosan nanoparticles (GEO-CNPs) by ionic gelation technique and to explore anti-arthritic and anti-inflammatory potential in FCA-induced arthritic model in rats. The GEO was characterized by gas chromatography flame ionization detector (GCFID) and the nanosuspension was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and X-rays diffraction (XRD). The Wistar albino rats (n = 32) were separated into four groups; Group 1 and 2 were considered as normal and arthritic controls. Group 3 was positive control that received oral celecoxib for 21 days while Group 4 was treated with oral GEO-CNPs after the induction of arthritis. Hind paw ankle joints diameters were weekly measured throughout the study and significant decrease (5.5 ± 0.5 mm) was observed in GEO-CNPs treatment group in comparison to arthritic group (9.17 ± 0.52 mm). Blood samples were drawn at end for evaluation of hematological, biochemical and inflammatory biomarkers. A significant upregulation of red blood cells and hemoglobin while downregulation of white blood cells, interleukin-6 (IL-6), tumor necrosis factor-alpha (TNF-α), C-reactive protein (CRP) and rheumatoid factor (RF) was observed. Ankles were transected for the histopathological and radiographic examination after animals were sacrificed which confirmed the alleviation of necrosis along cellular infiltration. It was concluded that GEO-CNPs were found to possess excellent therapeutic potential and promising candidates to reduce FCA-induced arthritis.
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Affiliation(s)
| | - Faqir Muhammad
- Institute of Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan.
| | - Bilal Aslam
- Institute of Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Naeem Faisal
- Institute of Physiology and Pharmacology, University of Agriculture, Faisalabad, Pakistan
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Atmospheric Pressure Plasma Polymerisation of D-Limonene and Its Antimicrobial Activity. Polymers (Basel) 2023; 15:polym15020307. [PMID: 36679188 PMCID: PMC9861354 DOI: 10.3390/polym15020307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 01/11/2023] Open
Abstract
Antibacterial coating is necessary to prevent biofilm-forming bacteria from colonising medical tools causing infection and sepsis in patients. The recent coating strategies such as immobilisation of antimicrobial materials and low-pressure plasma polymerisation may require multiple processing steps involving a high-vacuum system and time-consuming process. Some of those have limited efficacy and durability. Here, we report a rapid and one-step atmospheric pressure plasma polymerisation (APPP) of D-limonene to produce nano-thin films with hydrophobic-like properties for antibacterial applications. The influence of plasma polymerisation time on the thickness, surface characteristic, and chemical composition of the plasma-polymerised films was systematically investigated. Results showed that the nano-thin films deposited at 1 min on glass substrate are optically transparent and homogenous, with a thickness of 44.3 ± 4.8 nm, a smooth surface with an average roughness of 0.23 ± 0.02 nm. For its antimicrobial activity, the biofilm assay evaluation revealed a significant 94% decrease in the number of Escherichia coli (E. coli) compared to the control sample. More importantly, the resultant nano-thin films exhibited a potent bactericidal effect that can distort and rupture the membrane of the treated bacteria. These findings provide important insights into the development of bacteria-resistant and biocompatible coatings on the arbitrary substrate in a straightforward and cost-effective route at atmospheric pressure.
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Akdoğan E, Şirin HT. Plasma surface modification strategies for the preparation of antibacterial biomaterials: A review of the recent literature. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 131:112474. [PMID: 34857260 DOI: 10.1016/j.msec.2021.112474] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/03/2021] [Accepted: 10/01/2021] [Indexed: 12/16/2022]
Abstract
Plasma-based strategies offer several advantages for developing antibacterial biomaterials and can be used directly or combined with other surface modification techniques. Direct plasma strategies can be classified as plasma surface modifications that derive antibacterial property by tailoring surface topography or surface chemistry. Nano patterns induced by plasma modification can exhibit antibacterial property and promote the adhesion and proliferation of mammalian cells, creating antibacterial and biocompatible surfaces. Antibacterial effect by tailoring surface chemistry via plasma can be attained by either creating bacteriostatic surfaces or bactericidal surfaces. Plasma-assisted strategies incorporate plasma processes in combination with other surface modification techniques. Plasma coating can serve as a drug-eluting reservoir and diffusion barrier. The plasma-functionalized surface can serve as a platform for grafting antibacterial agents, and plasma surface activation can improve the adhesion of polymeric layers with antibacterial properties. This article critically reviews plasma-based strategies reported in the recent literature for the development of antibacterial biomaterial surfaces. Studies using both atmospheric and low-pressure plasmas are included in this review. The findings are discussed in terms of the trends in material and precursor selection, modification stability, antibacterial efficacy, the choice of bacterial strains tested, cell culture findings, critical aspects of in vitro performance testing and in vivo experimental design.
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Affiliation(s)
- Ebru Akdoğan
- Department of Chemistry, Ankara Hacı Bayram Veli University, 06900 Ankara, Turkey.
| | - Hasret Tolga Şirin
- Department of Chemistry, Ankara Hacı Bayram Veli University, 06900 Ankara, Turkey
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Shokr EK, Kamel MS, Abdel-Ghany H, El-Remaily MAEAAA. Optical characterization and effects of iodine vapor & gaseous HCl adsorption investigation of novel synthesized organic dye based on thieno[2,3-b]thiophene. OPTIK 2021; 243:167385. [DOI: 10.1016/j.ijleo.2021.167385] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Grant DS, Ahmed J, Whittle JD, Michelmore A, Vasilev K, Bazaka K, Jacob MV. Comparative Study of Natural Terpenoid Precursors in Reactive Plasmas for Thin Film Deposition. Molecules 2021; 26:4762. [PMID: 34443354 PMCID: PMC8402203 DOI: 10.3390/molecules26164762] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/26/2021] [Accepted: 07/28/2021] [Indexed: 11/16/2022] Open
Abstract
If plasma polymer thin films are to be synthesised from sustainable and natural precursors of chemically heterogeneous composition, it is important to understand the extent to which this composition influences the mechanism of polymerisation. To this end, a well-studied monoterpene alcohol, terpinen-4-ol, has been targeted for a comparative study with the naturally occurring mix of terpenes (viz. Melaleuca alternifolia oil) from which it is commonly distilled. Positive ion mode mass spectra of both terpinen-4-ol and M. alternifolia oil showed a decrease in disparities between the type and abundance of cationic species formed in their respective plasma environments as applied plasma power was increased. Supplementary biological assay revealed the antibacterial action of both terpinen-4-ol and M. alternifolia derived coatings with respect to S. aureus bacteria, whilst cytocompatibility was demonstrated by comparable eukaryotic cell adhesion to both coatings. Elucidating the processes occurring within the reactive plasmas can enhance the economics of plasma polymer deposition by permitting use of the minimum power, time and precursor pre-processing required to control the extent of monomer fragmentation and fabricate a film of the desired thickness and functionality.
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Affiliation(s)
- Daniel S. Grant
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; (D.S.G.); (J.A.); (K.B.)
| | - Jakaria Ahmed
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; (D.S.G.); (J.A.); (K.B.)
| | - Jason D. Whittle
- UniSA STEM, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia; (J.D.W.); (A.M.); (K.V.)
| | - Andrew Michelmore
- UniSA STEM, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia; (J.D.W.); (A.M.); (K.V.)
| | - Krasimir Vasilev
- UniSA STEM, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia; (J.D.W.); (A.M.); (K.V.)
| | - Kateryna Bazaka
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; (D.S.G.); (J.A.); (K.B.)
- School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, ACT 2600, Australia
| | - Mohan V. Jacob
- College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia; (D.S.G.); (J.A.); (K.B.)
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Levchenko I, Xu S, Baranov O, Bazaka O, Ivanova EP, Bazaka K. Plasma and Polymers: Recent Progress and Trends. Molecules 2021; 26:molecules26134091. [PMID: 34279431 PMCID: PMC8271681 DOI: 10.3390/molecules26134091] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/20/2021] [Accepted: 06/22/2021] [Indexed: 02/06/2023] Open
Abstract
Plasma-enhanced synthesis and modification of polymers is a field that continues to expand and become increasingly more sophisticated. The highly reactive processing environments afforded by the inherently dynamic nature of plasma media are often superior to ambient or thermal environments, offering substantial advantages over other processing methods. The fluxes of energy and matter toward the surface enable rapid and efficient processing, whereas the charged nature of plasma-generated particles provides a means for their control. The range of materials that can be treated by plasmas is incredibly broad, spanning pure polymers, polymer-metal, polymer-wood, polymer-nanocarbon composites, and others. In this review, we briefly outline some of the recent examples of the state-of-the-art in the plasma-based polymer treatment and functionalization techniques.
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Affiliation(s)
- Igor Levchenko
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
- Correspondence: (I.L.); (K.B.)
| | - Shuyan Xu
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
| | - Oleg Baranov
- Faculty of Aircraft Engines, National Aerospace University, 61070 Kharkiv, Ukraine;
| | - Olha Bazaka
- School of Science, RMIT University, P.O. Box 2476, Melbourne, VIC 3001, Australia; (O.B.); (E.P.I.)
| | - Elena P. Ivanova
- School of Science, RMIT University, P.O. Box 2476, Melbourne, VIC 3001, Australia; (O.B.); (E.P.I.)
| | - Kateryna Bazaka
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
- School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
- Correspondence: (I.L.); (K.B.)
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Hennekam BE, Al‐Bataineh SA, Michelmore A. Fabrication and characterization of biorenewable plasma polymer films using sandalwood oil precursor. J Appl Polym Sci 2020. [DOI: 10.1002/app.49288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Brent E. Hennekam
- School of Natural Built EnvironmentsUniversity of South Australia Mawson Lakes South Australia Australia
| | - Sameer A. Al‐Bataineh
- Future Industries InstituteUniversity of South Australia Mawson Lakes South Australia Australia
| | - Andrew Michelmore
- Future Industries InstituteUniversity of South Australia Mawson Lakes South Australia Australia
- School of EngineeringUniversity of South Australia Mawson Lakes South Australia Australia
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Novel Antimicrobial Coating on Silicone Contact Lens Using Glycidyl Methacrylate and Polyethyleneimine Based Polymers. Macromol Rapid Commun 2020; 41:e2000175. [DOI: 10.1002/marc.202000175] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/12/2020] [Indexed: 12/19/2022]
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Al-Jumaili A, Kumar A, Bazaka K, Jacob MV. Electrically Insulating Plasma Polymer/ZnO Composite Films. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E3099. [PMID: 31547551 PMCID: PMC6804142 DOI: 10.3390/ma12193099] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/02/2019] [Accepted: 09/13/2019] [Indexed: 12/15/2022]
Abstract
In this report, the electrical properties of plasma polymer films functionalized with ZnO nanoparticles were investigated with respect to their potential applications in biomaterials and microelectronics fields. The nanocomposite films were produced using a single-step method that combines simultaneous plasma polymerization of renewable geranium essential oil with thermal decomposition of zinc acetylacetonate Zn(acac)2. The input power used for the deposition of composites were 10 W and 50 W, and the resulting composite structures were abbreviated as Zn/Ge 10 W and Zn/Ge 50 W, respectively. The electrical properties of pristine polymers and Zn/polymer composite films were studied in metal-insulator-metal structures. At a quantity of ZnO of around ~1%, it was found that ZnO had a small influence on the capacitance and dielectric constants of thus-fabricated films. The dielectric constant of films with smaller-sized nanoparticles exhibited the highest value, whereas, with the increase in ZnO particle size, the dielectric constant decreases. The conductivity of the composites was calculated to be in the in the range of 10-14-10-15 Ω-1 m-1, significantly greater than that for the pristine polymer, the latter estimated to be in the range of 10-16-10-17 Ω-1 m-1.
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Affiliation(s)
- Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- Physics Department, College of Science, Anbar University, Ramadi 31001, Iraq.
| | - Avishek Kumar
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
- Research School of Electrical, Energy and Materials Engineering, The Australian National University, Canberra, ACT 2601, Australia.
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
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Eco-friendly nanocomposites derived from geranium oil and zinc oxide in one step approach. Sci Rep 2019; 9:5973. [PMID: 30979934 PMCID: PMC6461640 DOI: 10.1038/s41598-019-42211-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 03/21/2019] [Indexed: 11/08/2022] Open
Abstract
Nanocomposites offer attractive and cost-effective thin layers with superior properties for antimicrobial, drug delivery and microelectronic applications. This work reports single-step plasma-enabled synthesis of polymer/zinc nanocomposite thin films via co-deposition of renewable geranium essential oil-derived polymer and zinc nanoparticles produced by thermal decomposition of zinc acetylacetonate. The chemical composition, surfaces characteristics and antimicrobial performance of the designed nanocomposite were systematically investigated. XPS survey proved the presence of ZnO in the matrix of formed polymers at 10 W and 50 W. SEM images verified that the average size of a ZnO nanoparticle slightly increased with an increase in the power of deposition, from approximately 60 nm at 10 W to approximately 80 nm at 50 W. Confocal scanning laser microscopy images showed that viability of S. aureus and E.coli cells significantly reduced on surfaces of ZnO/polymer composites compared to pristine polymers. SEM observations further demonstrated that bacterial cells incubated on Zn/Ge 10 W and Zn/Ge 50 W had deteriorated cell walls, compared to pristine polymers and glass control. The release of ZnO nanoparticles from the composite thin films was confirmed using ICP measurements, and can be further controlled by coating the film with a thin polymeric layer. These eco-friendly nanocomposite films could be employed as encapsulation coatings to protect relevant surfaces of medical devices from microbial adhesion and colonization.
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Al-Jumaili A, Kumar A, Bazaka K, Jacob MV. Plant Secondary Metabolite-Derived Polymers: A Potential Approach to Develop Antimicrobial Films. Polymers (Basel) 2018; 10:E515. [PMID: 30966549 PMCID: PMC6415405 DOI: 10.3390/polym10050515] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 04/27/2018] [Accepted: 05/02/2018] [Indexed: 12/21/2022] Open
Abstract
The persistent issue of bacterial and fungal colonization of artificial implantable materials and the decreasing efficacy of conventional systemic antibiotics used to treat implant-associated infections has led to the development of a wide range of antifouling and antibacterial strategies. This article reviews one such strategy where inherently biologically active renewable resources, i.e., plant secondary metabolites (PSMs) and their naturally occurring combinations (i.e., essential oils) are used for surface functionalization and synthesis of polymer thin films. With a distinct mode of antibacterial activity, broad spectrum of action, and diversity of available chemistries, plant secondary metabolites present an attractive alternative to conventional antibiotics. However, their conversion from liquid to solid phase without a significant loss of activity is not trivial. Using selected examples, this article shows how plasma techniques provide a sufficiently flexible and chemically reactive environment to enable the synthesis of biologically-active polymer coatings from volatile renewable resources.
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Affiliation(s)
- Ahmed Al-Jumaili
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- Physics Department, College of Science, Ramadi, Anbar University, Ramadi 11, Iraq.
| | - Avishek Kumar
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
| | - Kateryna Bazaka
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
- School of Chemistry, Physics, Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia.
| | - Mohan V Jacob
- Electronics Materials Lab, College of Science and Engineering, James Cook University, Townsville, QLD 4811, Australia.
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Vasilev K, Ramiasa MM. Nanoengineered Interfaces, Coatings, and Structures by Plasma Techniques. NANOMATERIALS 2017; 7:nano7120449. [PMID: 29244713 PMCID: PMC5746939 DOI: 10.3390/nano7120449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 12/12/2017] [Accepted: 12/12/2017] [Indexed: 11/24/2022]
Affiliation(s)
- Krasimir Vasilev
- School of Engineering, Future Industries Institute, University of South Australia, Adelaide, SA 5095, Australia.
| | - Melanie Macgregor Ramiasa
- School of Engineering, Future Industries Institute, University of South Australia, Adelaide, SA 5095, Australia.
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The Electrical Properties of Plasma-Deposited Thin Films Derived from Pelargonium graveolens. ELECTRONICS 2017. [DOI: 10.3390/electronics6040086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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