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Nguyen QM, Hutchison P, Palombo E, Yu A, Kingshott P. Antibiofilm Activity of Eugenol-Loaded Chitosan Coatings against Common Medical-Device-Contaminating Bacteria. ACS APPLIED BIO MATERIALS 2024; 7:918-935. [PMID: 38275187 DOI: 10.1021/acsabm.3c00949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
The formation of pathogenic biofilms on medical devices is a major public health concern accounting for over 65% of healthcare-associated infections and causing high infection morbidity, mortality, and a great burden to patients and the healthcare system due to its resistance to treatment. In this study, we developed a chitosan-based antimicrobial coating with embedded mesoporous silica nanoparticles (MSNs) to load and deliver eugenol, an essential oil component, to inhibit the biofilm formation of common bacteria in medical-device-related infections. The eugenol-loaded MSNs were dispersed in a chitosan solution, which was then cross-linked with glutaraldehyde and drop-casted to obtain coatings. The MSNs and coatings were characterized by dynamic light scattering, Brunauer-Emmett-Teller analysis, attenuated-total-reflectance Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, 3D optical profilometry, and scanning electron microscopy. The release behavior of eugenol-loaded MSNs and coatings and the antibiofilm and antimicrobial activity of the coatings against adherent Staphylococcus aureus, methicillin-resistant S. aureus, and Pseudomonas aeruginosa were investigated. Eugenol was released from the MSNs and coatings in aqueous conditions in a controlled manner with an initial low release, followed by a peak release, a decrease, and a plateau. While the chitosan coatings alone or with unloaded MSNs demonstrated limited antimicrobial effects and still supported biofilm formation after 24 h, the coating containing eugenol not only reduced biofilm formation but also killed the majority of the attached bacteria. It also showed biocompatibility in indirect contact with NIH/3T3 fibroblasts and a high percentage of live cells in direct contact. However, further investigations into cell proliferation in direct contact are recommended. The findings indicated that the chitosan-based coating with eugenol-loaded MSNs could be developed into an effective strategy to inhibit biofilm formation on medical devices.
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Affiliation(s)
- Quang Minh Nguyen
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Peter Hutchison
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Enzo Palombo
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Aimin Yu
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Peter Kingshott
- Department of Chemistry and Biotechnology, School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- ARC Training Centre in Surface Engineering for Advanced Materials, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
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Han X, Qian Y, Li J, Zhang Z, Guo J, Zhang N, Liu L, Cheng Z, Yu X. Preparation of Azoxystrobin-Zinc Metal-Organic Framework/Biomass Charcoal Composite Materials and Application in the Prevention and Control of Gray Mold in Tomato. Int J Mol Sci 2023; 24:15609. [PMID: 37958590 PMCID: PMC10647336 DOI: 10.3390/ijms242115609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
In order to reduce the use of fungicide and ensure food safety, it is necessary to develop fungicide with low toxicity and high efficiency to reduce residues. Azoxystrobin (AZOX), which is derived from mushrooms, is an excellent choice. However, conventional AZOX release is difficult to regulate. In this paper, a pH-responsive fungicide delivery system for the preparation of AZOX by impregnation method was reported. The Zinc metal-organic framework/Biomass charcoal (ZIF-8/BC) support was first prepared, and subsequently, the AZOX-ZIF-8/BC nano fungicide was prepared by adsorption of AZOX onto ZIF-8/BC by dipping. Gray mold, caused by Botrytis cinerea, is one of the most important crop diseases worldwide. AZOX-ZIF-8/BC could respond to oxalic acid produced by Botrytis cinerea to release loaded AZOX. When pH = 4.8, it was 48.42% faster than when pH = 8.2. The loading of AZOX on ZIF-8/BC was 19.83%. In vitro and pot experiments showed that AZOX-ZIF-8/BC had significant fungicidal activity, and 300 mg/L concentration of AZOX-ZIF-8-BC could be considered as a safe and effective control of Botrytis cinerea. The above results indicated that the prepared AZOX-ZIF-8/BC not only exhibited good drug efficacy but also demonstrated pH-responsive fungicide release.
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Affiliation(s)
- Xiao Han
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (X.H.); (Y.Q.); (Z.Z.); (J.G.); (N.Z.); (L.L.)
| | - Yinjie Qian
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (X.H.); (Y.Q.); (Z.Z.); (J.G.); (N.Z.); (L.L.)
| | - Jiapeng Li
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China;
| | - Zhongkai Zhang
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (X.H.); (Y.Q.); (Z.Z.); (J.G.); (N.Z.); (L.L.)
| | - Jinbo Guo
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (X.H.); (Y.Q.); (Z.Z.); (J.G.); (N.Z.); (L.L.)
| | - Ning Zhang
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (X.H.); (Y.Q.); (Z.Z.); (J.G.); (N.Z.); (L.L.)
| | - Longyu Liu
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (X.H.); (Y.Q.); (Z.Z.); (J.G.); (N.Z.); (L.L.)
| | - Zhiqiang Cheng
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China;
| | - Xiaobin Yu
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (X.H.); (Y.Q.); (Z.Z.); (J.G.); (N.Z.); (L.L.)
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Zhao K, Xu G, Wang L, Wu T, Zhang X, Zhang C, Zhao Y, Li Z, Gao Y, Du F. Using a Dynamic Hydrophilization Strategy to Achieve Nanodispersion, Full Wetting, and Precise Delivery of Hydrophobic Pesticide. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37488063 DOI: 10.1021/acsami.3c07530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Various strategies have been developed to improve the applicability of hydrophobic pesticides for better effectiveness in agriculture. However, existing formulations of hydrophobic pesticides still suffer from complicated processing, abused organic solvents, indispensable surfactants, or inescapable ecotoxicity, which strictly limit their applications. Herein, a dynamic covalent bond tailored pesticide (fipronil) amphiphile is constructed to address the above issues, which accomplishes the nanodispersion, full wetting, and precise delivery without organic solvents, surfactants, and materials simultaneously. By introducing a hydrophilic ligand on the hydrophobic fipronil through an imine bond, the cleavable fipronil amphiphile (FPP) exhibits superior water solubility and can even self-assemble into micelles at higher concentrations, which can be directly applied in powder form without organic solvents. Attributed to the suitable hydrophilic/hydrophobic ratio, FPP achieves full wetting and effective deposition on superhydrophobic rice leaves without surfactants. Moreover, benefiting from the unique dynamic nature of the imine bond, FPP maintains good storage stability while sensitively releasing back to fipronil under the humidity and pH trigger, consequently implementing the precise delivery for nontarget Apis cerana and target Chilo suppressalis without materials. To our knowledge, this dynamic covalent bond tailored amphiphile strategy is the first idea that simultaneously takes the dispersibility, wettability, and responsiveness of hydrophobic pesticides into account, providing a possibility to control the entire journey of field application and even promising to be incorporated into the synthesis process, thus paving the way for modern sustainable agriculture.
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Affiliation(s)
- Kefei Zhao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Guangchun Xu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R. China
| | - Leng Wang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Tianyue Wu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Xingyu Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Chenhui Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Yuhang Zhao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Zilu Li
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Yuxia Gao
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
| | - Fengpei Du
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, P.R. China
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Wang CY, Qin JC, Yang YW. Multifunctional Metal-Organic Framework (MOF)-Based Nanoplatforms for Crop Protection and Growth Promotion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37037783 DOI: 10.1021/acs.jafc.3c01094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Phytopathogen, pest, weed, and nutrient deficiency cause severe losses to global crop yields every year. As the core engine, agrochemicals drive the continuous development of modern agriculture to meet the demand for agricultural productivity and increase the environmental burden due to inefficient use. With new advances in nanotechnology, introducing nanomaterials into agriculture to realize agrochemical accurate and targeted delivery has brought new opportunities to support the sustainable development of green agriculture. Metal-Organic frameworks (MOFs), which weave metal ions/clusters and organic ligands into porous frameworks, have exhibited significant advantages in constructing biotic/abiotic stimuli-responsive nanoplatforms for controlled agrochemical delivery. This review emphasizes the recent developments of MOF-based nanoplatforms for crop protection, including phytopathogen, pest, and weed control, and crop growth promotion, including fertilizer/plant hormone delivery. Finally, forward-looking perspectives and challenges on MOF-based nanoplatforms for future applications in crop protection and growth promotion are also discussed.
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Affiliation(s)
- Chao-Yi Wang
- College of Plant Science and College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Jian-Chun Qin
- College of Plant Science and College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Ying-Wei Yang
- College of Plant Science and College of Chemistry, Jilin University, Changchun 130012, P. R. China
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