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Koshy JT, Sangeetha D, Bele Y, Rakshitha M. Fabrication, Characterization, and Biological Evaluation of T. terrestris Incorporated Titanium-Doped ZnO/Cellulose Nanocomposite Films as a Therapeutic Hemostatic Scaffolds for Diabetic Wound Healing. ACS OMEGA 2024; 9:18327-18340. [PMID: 38680366 PMCID: PMC11044262 DOI: 10.1021/acsomega.4c00174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/25/2024] [Accepted: 03/28/2024] [Indexed: 05/01/2024]
Abstract
The advent of biobased materials exhibiting remarkable effectiveness and performance has ushered in a paradigm shift in the field of biomedical science. Polymers are often used in the medical sector, particularly in the regeneration of bones, tissues, and wounds. Fast wound healing and self-healing polymers created from sustainable surroundings are attractive alternatives to create demand for new pathways in polymer research. This study investigates the efficacy of a biowaste-derived polymer, which was extracted and supplemented with titanium-doped ZnO nanoparticles along with medication in the form of an extract to evaluate its effectiveness in promoting wound healing. The prepared materials were further characterized using X-ray diffraction (XRD), UV-visible spectroscopy, Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), optical microscopy, atomic force microscopy (AFM), tensile, and its color parameters. In vitro studies on wound healing were also conducted. The results clearly showed that the produced substance possesses properties that are noteworthy for wound healing.
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Affiliation(s)
- Jijo Thomas Koshy
- Department
of Chemistry, SAS, Vellore Institute of
Technology, Vellore 632 014, India
| | - Dhanaraj Sangeetha
- Department
of Chemistry, SAS, Vellore Institute of
Technology, Vellore 632 014, India
| | - Yogesh Bele
- Department
of Microbiology, Sant Gadge Baba Amravati
University, Amravati 444602, India
| | - Murugan Rakshitha
- Department
of Chemistry, SAS, Vellore Institute of
Technology, Vellore 632 014, India
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2
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Rilda Y, Valeri A, Drajat S, Agustien A, Fardi H, Sofyan N. Biosynthesis, Characterization, and Antibacterial Activity of Ti-Doped Zno (Ti/ZnO) Using Mediated Aspergillus Niger. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2023. [DOI: 10.1016/j.sajce.2023.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/08/2023] Open
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3
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Multifunctional PCL composite nanofibers reinforced with lignin and ZIF-8 for the treatment of bone defects. Int J Biol Macromol 2022; 218:1-8. [DOI: 10.1016/j.ijbiomac.2022.06.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/20/2022] [Accepted: 06/28/2022] [Indexed: 11/21/2022]
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Lewis G. Antibiotic-free antimicrobial poly (methyl methacrylate) bone cements: A state-of-the-art review. World J Orthop 2022; 13:339-353. [PMID: 35582158 PMCID: PMC9048499 DOI: 10.5312/wjo.v13.i4.339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 11/30/2021] [Accepted: 03/07/2022] [Indexed: 02/06/2023] Open
Abstract
Prosthetic joint infection (PJI) is the most serious complication following total joint arthroplasty, this being because it is associated with, among other things, high morbidity and low quality of life, is difficult to prevent, and is very challenging to treat/manage. The many shortcomings of antibiotic-loaded poly (methyl methacrylate) (PMMA) bone cement (ALBC) as an agent for preventing and treating/ managing PJI are well-known. One is that microorganisms responsible for most PJI cases, such as methicillin-resistant S. aureus, have developed or are developing resistance to gentamicin sulfate, which is the antibiotic in the vast majority of approved ALBC brands. This has led to many research efforts to develop cements that do not contain gentamicin (or, for that matter, any antibiotic) but demonstrate excellent antimicrobial efficacy. There is a sizeable body of literature on these so-called “antibiotic-free antimicrobial” PMMA bone cements (AFAMBCs). The present work is a comprehensive and critical review of this body. In addition to summaries of key trends in results of characterization studies of AFAMBCs, the attractive features and shortcomings of the literature are highlighted. Shortcomings provide motivation for future work, with some ideas being formulation of a new generation of AFAMBCs by, example, adding a nanostructured material and/or an extract from a natural product to the powder and/or liquid of the basis cement, respectively.
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Affiliation(s)
- Gladius Lewis
- Department of Mechanical Engineering, University of Memphis, Memphis, TN 38152, United States
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5
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Superhydrophobic Coating Derived from Geothermal Silica to Enhance Material Durability of Bamboo Using Hexadimethylsilazane (HMDS) and Trimethylchlorosilane (TMCS). MATERIALS 2021; 14:ma14030530. [PMID: 33499183 PMCID: PMC7865611 DOI: 10.3390/ma14030530] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 12/05/2022]
Abstract
Bamboo, a fast-growing plant from Asia, is used as building material with unique properties, while exhibiting fast degradation due to its hydrophobicity. Therefore, many attempts have been implemented using several technologies for bamboo modification to alter the hydrophobicity. Most previous studies producing superhydrophobic properties are conducted by using tetraethoxysilane (TEOS) as a precursor agent. However, this method, using TEOS with harmful properties and unaffordable compounds, requires many steps to accomplish the experimental method. Therefore, this paper employed geothermal solid waste as a silica source of the precursor. Thus, an effective and efficient method was applied to prepare superhydrophobic coating by using a precursor of geothermal silica and further modification using hexamethyldisilazane (HMDS) and trimethylchlorosilane (TMCS). The research was executed by the full factorial statistical method using two numerical variables (HMDS/TMCS concentration and silica concentration) and one categorical variable (solvent types). The uncoated material revealed higher weight gain in mass and moisture content than that of the coated bamboo after the soil burial test to assess the durability of the bamboo. However, the durability of superhydrophobic coating realized hydrophobic performance for both agents during sand abrasion for a total of 120 s at an angle of 45°. Statistical results showed the optimum contact angle (CA) achieved in superhydrophobic performance with lower silica concentration for HMDS concentration and the appropriate solvent of n-hexane for HMDS and iso-octane for TMCS. All results were supported using many instruments of analysis to confirm the step-by-step alteration of geothermal silica to be used as a superhydrophobic coating, such as XRF, XRD, FTIR, SEM, and SEM EDX.
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Wei X, Li Q, Wu C, Sun T, Li X. Preparation, characterization and antibacterial mechanism of the chitosan coatings modified by Ag/ZnO microspheres. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:5527-5538. [PMID: 32567068 DOI: 10.1002/jsfa.10605] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/09/2020] [Accepted: 06/21/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND To improve the physicochemical and antibacterial properties of coatings, the chitosan (CS) coatings were respectively prepared by a casting method with zinc oxide (ZnO) and silver (Ag)/ZnO microspheres as modifiers. The chemical structures and micromorphology of ZnO, Ag/ZnO microspheres and CS coatings were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray spectroscopy. Furthermore, using the dominant spoilage bacteria of aquatic products, Shewanella putrefaciens and Pseudomonas aeruginosa, as objects, the antibacterial activities and mechanism of the CS coatings were investigated. RESULTS The results show that ZnO and Ag/ZnO microspheres are dispersed homogeneously in the CS coatings. After modified by ZnO and Ag/ZnO microspheres, the mechanical properties and antibacterial abilities of the CS coatings are improved, and that of 0.5% Ag/ZnO-CS coating is the optimal. For pure CS coating, the bacterial cell membrane is damaged slightly because of the electrostatic interaction between NH3+ of CS and the negative charge on bacterial surface. After treated by ZnO-CS composite coating, the bacterial cell membrane is destroyed badly on account of the earlier-mentioned ion interaction and disturbing the synthesis of high molecular weight total protein. CONCLUSION With regard to Ag/ZnO-CS composite coating, the bacterial cell membrane is damaged seriously and cell contents are completely released due to ion interaction, disturbing the synthesis of high molecular weight total protein and low molecular weight membrane protein. Hence, Ag/ZnO-CS composite coatings are antimicrobial materials and food preservative materials with great potential application. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Xuqing Wei
- College of Food Science and Engineering, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou, China
| | - Qiuying Li
- College of Food Science and Engineering, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou, China
| | - Chaoling Wu
- College of Food Science and Engineering, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou, China
- Jiangxi Jiangteng Environmental Testing Technology Co., Ltd., Shangrao, China
| | - Tong Sun
- College of Food Science and Engineering, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou, China
| | - Xuepeng Li
- College of Food Science and Engineering, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou, China
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Kalia A, Abd-Elsalam KA, Kuca K. Zinc-Based Nanomaterials for Diagnosis and Management of Plant Diseases: Ecological Safety and Future Prospects. J Fungi (Basel) 2020; 6:E222. [PMID: 33066193 PMCID: PMC7711620 DOI: 10.3390/jof6040222] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/05/2020] [Accepted: 10/10/2020] [Indexed: 12/13/2022] Open
Abstract
A facet of nanorenaissance in plant pathology hailed the research on the development and application of nanoformulations or nanoproducts for the effective management of phytopathogens deterring the growth and yield of plants and thus the overall crop productivity. Zinc nanomaterials represent a versatile class of nanoproducts and nanoenabled devices as these nanomaterials can be synthesized in quantum amounts through economically affordable processes/approaches. Further, these nanomaterials exhibit potential targeted antimicrobial properties and low to negligible phytotoxicity activities that well-qualify them to be applied directly or in a deviant manner to accomplish significant antibacterial, antimycotic, antiviral, and antitoxigenic activities against diverse phytopathogens causing plant diseases. The photo-catalytic, fluorescent, and electron generating aspects associated with zinc nanomaterials have been utilized for the development of sensor systems (optical and electrochemical biosensors), enabling quick, early, sensitive, and on-field assessment or quantification of the test phytopathogen. However, the proficient use of Zn-derived nanomaterials in the management of plant pathogenic diseases as nanopesticides and on-field sensor system demands that the associated eco- and biosafety concerns should be well discerned and effectively sorted beforehand. Current and possible utilization of zinc-based nanostructures in plant disease diagnosis and management and their safety in the agroecosystem is highlighted.
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Affiliation(s)
- Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, College of Agriculture, Punjab Agricultural University, Ludhiana 141004, Punjab, India
| | - Kamel A. Abd-Elsalam
- Agricultural Research Center (ARC), Plant Pathology Research Institute, Giza 12619, Egypt;
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Králové, 500 03 Hradec Králové, Czech Republic
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8
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Nanoparticles and their antimicrobial properties against pathogens including bacteria, fungi, parasites and viruses. Microb Pathog 2018; 123:505-526. [DOI: 10.1016/j.micpath.2018.08.008] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 07/15/2018] [Accepted: 08/06/2018] [Indexed: 12/17/2022]
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9
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Li X, Mariano M, McMillon-Brown L, Huang JS, Sfeir MY, Reed MA, Jung Y, Taylor AD. Charge Transfer from Carbon Nanotubes to Silicon in Flexible Carbon Nanotube/Silicon Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1702387. [PMID: 29125720 DOI: 10.1002/smll.201702387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 08/27/2017] [Indexed: 06/07/2023]
Abstract
Mechanical fragility and insufficient light absorption are two major challenges for thin flexible crystalline Si-based solar cells. Flexible hybrid single-walled carbon nanotube (SWNT)/Si solar cells are demonstrated by applying scalable room-temperature processes for the fabrication of solar-cell components (e.g., preparation of SWNT thin films and SWNT/Si p-n junctions). The flexible SWNT/Si solar cells present an intrinsic efficiency ≈7.5% without any additional light-trapping structures. By using these solar cells as model systems, the charge transport mechanisms at the SWNT/Si interface are investigated using femtosecond transient absorption. Although primary photon absorption occurs in Si, transient absorption measurements show that SWNTs also generate and inject excited charge carriers to Si. Such effects can be tuned by controlling the thickness of the SWNTs. Findings from this study could open a new pathway for designing and improving the efficiency of photocarrier generation and absorption for high-performance ultrathin hybrid SWNT/Si solar cells.
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Affiliation(s)
- Xiaokai Li
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA
| | - Marina Mariano
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA
| | - Lyndsey McMillon-Brown
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA
| | - Jing-Shun Huang
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA
| | - Matthew Y Sfeir
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Mark A Reed
- Department of Electrical Engineering, Yale University, New Haven, CT, 06520, USA
- Department of Applied Physics, Yale University, New Haven, CT, 06520, USA
| | - Yeonwoong Jung
- NanoScience Technology Center, Electrical and Computer Engineering, Materials Science and Engineering, University of Central Florida, Orlando, FL, 32816, USA
| | - André D Taylor
- Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, 06511, USA
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10
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Enhanced antibacterial activity and biocompatibility of zinc-incorporated organic-inorganic nanocomposite coatings via electrophoretic deposition. Colloids Surf B Biointerfaces 2017; 160:628-638. [DOI: 10.1016/j.colsurfb.2017.10.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 09/15/2017] [Accepted: 10/03/2017] [Indexed: 12/20/2022]
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11
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Antibacterial glass-ionomer cement restorative materials: A critical review on the current status of extended release formulations. J Control Release 2017; 262:317-328. [DOI: 10.1016/j.jconrel.2017.07.041] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 02/02/2023]
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12
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Effect of zinc oxide film morphologies on the formation of Shewanella putrefaciens biofilm. Biointerphases 2017; 12:011002. [PMID: 28183187 DOI: 10.1116/1.4976003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Zinc oxide (ZnO) films were prepared on aluminum substrate by a hydrothermal method to investigate the effect of their surface characteristics, including morphology and hydrophobicity, on the corresponding antibiofilm performance. The surface characteristics of the prepared ZnO films were examined by a comprehensive range of methodologies, suggesting that films of distinctive surface morphologies were successfully formed. Subsequently, their antibiofilm activities, using Shewanella putrefaciens as a model bacterium, were assessed. Surface measurements confirmed that the ZnO films equipped with a nanoscopic needlelike surface feature are more hydrophobic than those possessing densely packed microflakes. The reduced number of live cells and presence of biofilm, confirmed by optical and electron microscopy results, suggest that the former films possess an excellent antibiofilm performance. It is believed that the engineered nanoscopic needle feature might penetrate the cell membrane when they are in contact, allowing the effective substance of ZnO antibacterial ingredients to diffuse into the embedded bacteria. Furthermore, such surface characteristics might perturb the integrity of the cell membrane causing the intracellular substance is leaked from the cells. As such, the combinatorial effects of nanoscopic feature resulted in an inhibited growth of S. putrefaciens biofilm on ZnO film.
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Albu MG, Vladkova TG, Ivanova IA, Shalaby ASA, Moskova-Doumanova VS, Staneva AD, Dimitriev YB, Kostadinova AS, Topouzova-Hristova TI. Preparation and Biological Activity of New Collagen Composites, Part I: Collagen/Zinc Titanate Nanocomposites. Appl Biochem Biotechnol 2016; 180:177-93. [PMID: 27138724 DOI: 10.1007/s12010-016-2092-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 04/18/2016] [Indexed: 10/21/2022]
Abstract
The aim of this investigation was to develop new antimicrobial collagen/zinc titanate (ZnTiO3) biomaterials using a sol-gel cryogenic draying technology in keeping the native collagen activity. Broad-spectrum antimicrobial activity was demonstrated against Firmicutes (Staphylococcus epidermidis, Bacillus cereus, and Candida lusitaniae) and Gracilicutes (Escherichia coli, Salmonella enterica, and Pseudomonas putida) microorganisms. The antimicrobial activity as well as the cytotoxicity were specific for the different test microorganisms (Gram-positive and Gram-negative bacteria and fungi) and model eukaryotic cells (osteosarcoma, fibroblast, and keratinocyte cells), respectively, and both were depending on the ZnTiO3 concentration. Three mechanisms of the antimicrobial action were supposed, including (i) mechanical demolition of the cell wall and membrane by the crystal nanoparticles of the ZnTiO3 entrapped in the collagen matrix, (ii) chelation of its metal ions, and (iii) formation of free oxygen radicals due to the interaction between the microbial cells and antimicrobial agent. It was concluded that the optimal balance between antimicrobial activity and cytotoxicity could be achieved by a variation of the ZnTiO3 concentration. The antifungal and broad-spectrum antibacterial activity of the studied collagen/ZnTiO3 nanocomposites, combined with a low cytotoxicity, makes them a promising anti-infection biomaterial.
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Affiliation(s)
- Madalina G Albu
- Division Leather and Footwear Research Institute (ICPI), INCDTP, 93, "Ion Minulesku" Str, Bucharest, Romania
| | - Todorka G Vladkova
- University of Chemical Technology and Metallurgy, 8 "Kl. Ohridski" Blvd, 1756, Sofia, Bulgaria.
| | - Iliana A Ivanova
- Biological Faculty, Sofia University "St Kliment Ohridski", 8 "Dragan Tsankov" Str, 1164, Sofia, Bulgaria
| | - Ahmed S A Shalaby
- University of Chemical Technology and Metallurgy, 8 "Kl. Ohridski" Blvd, 1756, Sofia, Bulgaria
| | | | - Anna D Staneva
- University of Chemical Technology and Metallurgy, 8 "Kl. Ohridski" Blvd, 1756, Sofia, Bulgaria
| | - Yanko B Dimitriev
- University of Chemical Technology and Metallurgy, 8 "Kl. Ohridski" Blvd, 1756, Sofia, Bulgaria
| | - Anelya S Kostadinova
- Institute of Biophysics and Biomedical Investigations, BAS, "Acd. G. Bonchev" Str. Bl.21, 113, Sofia, Bulgaria
| | - Tanya I Topouzova-Hristova
- Biological Faculty, Sofia University "St Kliment Ohridski", 8 "Dragan Tsankov" Str, 1164, Sofia, Bulgaria
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Jamnongkan T, Sukumaran SK, Sugimoto M, Hara T, Takatsuka Y, Koyama K. Towards novel wound dressings: antibacterial properties of zinc oxide nanoparticles and electrospun fiber mats of zinc oxide nanoparticle/poly(vinyl alcohol) hybrids. JOURNAL OF POLYMER ENGINEERING 2015. [DOI: 10.1515/polyeng-2014-0319] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Zinc oxide (ZnO) nanoparticles possess antibacterial properties. Being less toxic to humans than silver, they are attractive as antibacterial agents in biomedical applications. In this study, we focus on the influence of the size of ZnO nanoparticles on their antibacterial action against strains of three bacteria: one Gram-negative, Escherichia coli and two Gram-positive, Bacillus subtilis and Staphylococcus aureus. The antibacterial efficacy of the nanoparticles increases with decreasing particle size. A major contributor to antibacterial action is the oxidative stress induced by the ZnO. To understand the relationship between antibacterial action and induced oxidative stress, we measured the dependence of the nanoparticle diameter on H2O2 concentration. Even at a fixed nanoparticle concentration, the H2O2 concentration increased with decreasing nanoparticle diameter. This is qualitatively similar to the dependence of the antibacterial activity on the nanoparticle diameter. In addition, in the presence of ZnO nanoparticles, we detected increased quantities of endogenous H2O2 in the E. coli. For use as antibacterial wound dressings, we fabricated nonwoven fiber mats from poly(vinyl alcohol) (PVA)/ZnO nanoparticle suspensions. The antibacterial efficacy of the PVA/ZnO electrospun fiber mats also increased with a decrease in the diameter and an increase in the concentration of the ZnO nanoparticles.
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Qian Y, Yao J, Russel M, Chen K, Wang X. Characterization of green synthesized nano-formulation (ZnO-A. vera) and their antibacterial activity against pathogens. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 39:736-746. [PMID: 25723342 DOI: 10.1016/j.etap.2015.01.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Revised: 01/22/2015] [Accepted: 01/23/2015] [Indexed: 06/04/2023]
Abstract
The application of nanotechnology in medicine has recently been a breakthrough in therapeutic drugs formulation. This paper presents the structural and optical characterization of a new green nano-formulation (ZnO-Aloe vera) with considerable antibacterial activity against pathogenic bacteria. Its particle structure, size and morphology were characterized by XRD, TEM and SEM. And optical absorption spectra and photoluminescence were measured synchronously. Their antibacterial activity against Escherichia coli and Staphylococcus aureus was also investigated using thermokinetic profiling and agar well diffusion method. The nano-formulation is spherical shape and hexagonal with a particle size ranging from 25 to 65 nm as well as an increased crystallite size of 49 nm. For antibacterial activity, the maximum inhibition zones of ZnO and ZnO+A. vera are 18.33 and 26.45 mm for E. coli, 22.11 and 28.12 mm for S. aureus (p<0.05). Considering Pmax, Qt and k, ZnO+A. vera nano-formulation has a significant (p < 0.05) antibacterial effect against S. aureus almost at all concentration and against E. coli at 15 and 25mg/L. ZnO+A. vera nano-formulation is much more toxic against S. aureus than E. coli, with an IC50 of 13.12 mg/L and 21.31 mg/L, respectively. The overall results reveal that the ZnO-A. vera nano-formulation has good surface energy, crystallinity, transmission, and enriched antibacterial activities. Their antibacterial properties are possibly relevant to particle size, microstructural ionization, the crystal formation and the Gram property of pathogens. This ZnO-A. vera nano-formulation could be utilized effectively as a spectral and significant antibacterial agent for pathogens in future medical and environmental concerns.
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Affiliation(s)
- Yiguang Qian
- School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology & Sino-Hungarian Joint Laboratory of Environmental Science and Health, China University of Geosciences, 430074 Wuhan, PR China
| | - Jun Yao
- School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology & Sino-Hungarian Joint Laboratory of Environmental Science and Health, China University of Geosciences, 430074 Wuhan, PR China; School of Civil & Environmental Engineering, and National "International Cooperation Base on Environment and Energy", University of Science and Technology Beijing, 100083 Beijing, PR China.
| | - Mohammad Russel
- School of Food and Environmental Science & Technology, Dalian University of Technology, Panjin 124221, PR China
| | - Ke Chen
- School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology & Sino-Hungarian Joint Laboratory of Environmental Science and Health, China University of Geosciences, 430074 Wuhan, PR China
| | - Xiaoyu Wang
- China Quality Certification Centre Wuhan Branch, PR China
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16
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Dizaj SM, Lotfipour F, Barzegar-Jalali M, Zarrintan MH, Adibkia K. Antimicrobial activity of the metals and metal oxide nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 44:278-84. [DOI: 10.1016/j.msec.2014.08.031] [Citation(s) in RCA: 686] [Impact Index Per Article: 68.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/05/2014] [Accepted: 08/08/2014] [Indexed: 10/24/2022]
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17
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Zak AK, Hashim AM, Darroudi M. Optical properties of ZnO/BaCO3 nanocomposites in UV and visible regions. NANOSCALE RESEARCH LETTERS 2014; 9:399. [PMID: 25177218 PMCID: PMC4145363 DOI: 10.1186/1556-276x-9-399] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 08/07/2014] [Indexed: 06/03/2023]
Abstract
UNLABELLED Pure zinc oxide and zinc oxide/barium carbonate nanoparticles (ZnO-NPs and ZB-NPs) were synthesized by the sol-gel method. The prepared powders were characterized by X-ray diffraction (XRD), ultraviolet-visible (UV-Vis), Auger spectroscopy, and transmission electron microscopy (TEM). The XRD result showed that the ZnO and BaCO3 nanocrystals grow independently. The Auger spectroscopy proved the existence of carbon in the composites besides the Zn, Ba, and O elements. The UV-Vis spectroscopy results showed that the absorption edge of ZnO nanoparticles is redshifted by adding barium carbonate. In addition, the optical parameters including the refractive index and permittivity of the prepared samples were calculated using the UV-Vis spectra. PACS 81.05.Dz; 78.40.Tv; 42.70.-a.
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Affiliation(s)
- Ali Khorsand Zak
- Malaysia-Japan International Institute of Technology (MJIIT), University Teknologi Malaysia (UTM), Jalan Semarak, Kuala Lumpur 54100, Malaysia
- Nanotechnology Laboratory, Esfarayen University of Technology, Esfarayen 96619-98195, North Khorasan, Iran
| | - Abdul Manaf Hashim
- Malaysia-Japan International Institute of Technology (MJIIT), University Teknologi Malaysia (UTM), Jalan Semarak, Kuala Lumpur 54100, Malaysia
| | - Majid Darroudi
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad 3316-913791, Iran
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