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Hoxha A, Nikolaou A, Wilkinson HN, Hardman MJ, Gutierrez-Merino J, Felipe-Sotelo M, Carta D. Wound Healing Promotion via Release of Therapeutic Metallic Ions from Phosphate Glass Fibers: An In Vitro and Ex Vivo Study. ACS APPLIED MATERIALS & INTERFACES 2024; 16:37669-37682. [PMID: 39010729 DOI: 10.1021/acsami.4c07035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Biomaterials capable of promoting wound healing and preventing infections remain in great demand to address the global unmet need for the treatment of chronic wounds. Phosphate-based glasses (PG) have shown potential as bioresorbable materials capable of inducing tissue regeneration, while being replaced by regenerated tissue and releasing therapeutic species. In this work, phosphate-glass-based fibers (PGF) in the system P2O5-CaO-Na2O added with 1, 2, 4, 6, and 10 mol % of the therapeutic metallic ions (TMI) Ag+, Zn2+, and Fe3+ were manufactured via electrospinning of coacervate gels. Coacervation is a sustainable, cost-effective, water-based method to produce PG. All TMI are effective in promoting wound closure (re-epithelialization) in living human skin ex vivo, where the best-performing system is PGF containing Ag+. In particular, PGF with ≥4 mol % of Ag+ is capable of promoting 84% wound closure over 48 h. These results are confirmed by scratch test migration assays, with the PGF-Ag systems containing ≥6 mol % of Ag+, demonstrating significant wound closure enhancement (up to 72%) after 24 h. The PGF-Ag systems are also the most effective in terms of antibacterial activity against both the Gram-positive Staphylococcus aureus and the Gram-negative Escherichia coli. PGF doped with Zn2+ shows antibacterial activity only against S. aureus in the systems containing Zn2+ ≥ 10 mol %. In addition, PGF doped with Fe3+ rapidly accelerates ex vivo healing in patient chronic wound skin (>30% in 48 h), demonstrating the utility of doped PGF as a potential therapeutic strategy to treat chronic wounds.
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Affiliation(s)
- Agron Hoxha
- School of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, U.K
| | - Athanasios Nikolaou
- School of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, U.K
- School of Biosciences and Medicine, University of Surrey, Guildford GU2 7XH, U.K
| | - Holly N Wilkinson
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull HU6 7RX, U.K
- Skin Research Centre, Hull York Medical School, University of York, York YO10 5DD, U.K
| | - Matthew J Hardman
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull HU6 7RX, U.K
- Skin Research Centre, Hull York Medical School, University of York, York YO10 5DD, U.K
| | | | - Monica Felipe-Sotelo
- School of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, U.K
| | - Daniela Carta
- School of Chemistry and Chemical Engineering, University of Surrey, Guildford GU2 7XH, U.K
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Fatemifard SZ, Masoumiasl A, Fazeli-Nasab B, Piri R, Mirzaei AR, Salehi Sardoei A, Ghorbanpour M. Exogenously applied silver nanoparticles (AgNPs) differentially affect bacterial blight disease control in twenty-seven wheat cultivars. BMC PLANT BIOLOGY 2024; 24:695. [PMID: 39044125 PMCID: PMC11264436 DOI: 10.1186/s12870-024-05424-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 07/15/2024] [Indexed: 07/25/2024]
Abstract
The bacterial blight of wheat is an important global disease causing a significant decline in crop yield. Nanotechnology offers a potential solution for managing plant diseases. Therefore, this research aimed to investigate the effectiveness of silver nanoparticles (AgNPs) in controlling bacterial blight in 27 locally grown wheat cultivars. The study examined the impact of AgNPs at three distinct time points: 1, 3, and 5 days after the onset of the disease. Biochemical assay revealed that one day after applying the disease stress, the Inia cultivar had the highest amount of soluble protein (55.60 μg.g-1FW) content in the treatment without AgNPs. The Azadi cultivar, without AgNPs treatment, had the lowest amount of soluble protein content (15.71 μg.g-1FW). The Tabasi cultivar had the highest activity of the superoxide dismutase (SOD) (61.62 mM.g-1FW) with the combination treatment of AgNPs. On the other hand, the Karchia cultivar had the lowest SOD activity (0.6 mM.g-1FW) in the treatment of disease without AgNPs. Furthermore, three days after the application of stress, the Mahdavi cultivar had the highest amount of soluble protein content (54.16 μg.g-1FW) in the treatment of disease without AgNPs. The Niknejad cultivar had the highest activity of the SOD (74.15 mM.g-1FW) with the combined treatment of the disease without AgNPs. The Kavir cultivar had the lowest SOD activity (1.95 mM.g-1FW) and the lowest peroxidase (POX) activity (0.241 mM g-1FW min-1) in the treatment of the disease with AgNPs. Five days after exposure to stress, the Mahooti cultivar had the highest SOD activity (88.12 mM.g-1FW) with the combined treatment of the disease with AgNPs, and the Karchia cultivar had the lowest SOD activity (2.39 mM.g-1FW) in the treatment of the disease with AgNPs. Further, the results indicated that exposure to AgNPs could improve the antioxidant properties of wheat seeds in blight-infected and disease-free conditions in some cultivars.
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Affiliation(s)
| | - Asad Masoumiasl
- Department of Agronomy and Plant Breeding, Agriculture Faculty, Yasouj University, Yasouj, Iran.
| | - Bahman Fazeli-Nasab
- Department of Agronomy and Plant Breeding, Agriculture Institute, Research Institute of Zabol, Zabol, Iran
| | - Ramin Piri
- Department of Agronomy and Plant Breeding, Agriculture Faculty, University of Tehran, Tehran, Iran
| | - Ali Reza Mirzaei
- Department of Agronomy and Plant Breeding, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Ali Salehi Sardoei
- Department of Horticulture, Faculty of Environmental and Fisheries Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Mansour Ghorbanpour
- Department of Medicinal Plants, Faculty of Agriculture and Natural Resources, Arak University, Arak, 38156-8-8349, Iran.
- Institute of Nanoscience and Nanotechnology, Arak University, Arak, 38156-8-8349, Iran.
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Kurmanjiang T, Wang X, Li J, Mamat N, Nurmamat M, Xu G. A novel pyrazolone complex P-FAH-Cu-bpy induces death of Escherichia coli and Staphylococcus aureus by disrupting cell structure and blocking energy. Arch Microbiol 2023; 205:376. [PMID: 37940792 DOI: 10.1007/s00203-023-03714-6] [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: 09/08/2023] [Revised: 10/14/2023] [Accepted: 10/17/2023] [Indexed: 11/10/2023]
Abstract
A novel pyrazolone-based copper complex [Cu(L)(bpy)]∙CH3OH (P-FAH-Cu-bpy) was synthesized and previously characterized to have antitumor properties. This study aimed to investigate its antibacterial properties and action modes against Escherichia coli and Staphylococcus aureus. By agar diffusion assay, P-FAH-Cu-bpy showed strong antibacterial activity against E. coli and S. aureus with the diameter of inhibition zone of 10.17-12.50 mm and 11.83-14 mm, respectively. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the complex were 1.5 and 3 μM, respectively. Destroyed bacteria cells and debris were clearly observed by SEM. At 2 MIC and 4 MIC of P-FAH-Cu-bpy, 1.1683 and 1.9083 pg copper per cell was taken by E. coli, and 4.5670 and 8.5250 pg per cell by S. aureus, respectively. Multi-step resistance selection showed both bacteria were sensitive to P-FAH-Cu-bpy without induction of resistance within 30 generations. With P-FAH-Cu-bpy treatment, the release of nucleotides and proteins and alkaline phosphatase was increased, but the activity of K+-Na+-ATPase and Ca2+-Mg2+-ATPase and membrane conductivity were decreased in both pathogens. In conclusion, P-FAH-Cu-bpy induced death of both bacteria by destroying the cell membrane structure and blocking energy and exhibited strong antibacterial activity against E. coli and S. aureus without inducing microbial resistance.
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Affiliation(s)
- Tamasha Kurmanjiang
- College of Life Sciences, Xinjiang Normal University, Urumqi, 830017, Xinjiang, China
| | - Xiaojing Wang
- College of Life Sciences, Xinjiang Normal University, Urumqi, 830017, Xinjiang, China
| | - Jinyu Li
- College of Life Sciences, Xinjiang Normal University, Urumqi, 830017, Xinjiang, China.
| | - Nuramina Mamat
- College of Life Sciences, Xinjiang Normal University, Urumqi, 830017, Xinjiang, China
| | - Marhaba Nurmamat
- College of Life Sciences, Xinjiang Normal University, Urumqi, 830017, Xinjiang, China
| | - Guanchen Xu
- Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi, 830046, Xinjiang, China
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Ma M, Zhao M, Ji R, Guo Y, Li D, Zeng S. Adjusting the Dose of Ag-Ion Implantation on TiN-Ag-Modified SLA-Ti Creates Different Micronanostructures: Implications on Bacteriostasis, Biocompatibility, and Osteogenesis in Dental Implants. ACS OMEGA 2023; 8:39269-39278. [PMID: 37901550 PMCID: PMC10601048 DOI: 10.1021/acsomega.3c04769] [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: 07/04/2023] [Accepted: 09/25/2023] [Indexed: 10/31/2023]
Abstract
The prevention of aseptic loosening and peri-implantitis is crucial for the success of dental implant surgery. In this study, different doses of Ag-implanted TiN/Ag nanomultilayers were prepared on the sandblasting with large grit and acid etching (SLA)-Ti surface using a multiarc ion-plating system and an ion-implantation system, respectively. The physical and chemical properties of the samples were assessed using various techniques, including scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, atomic force microscopy, inductively coupled plasma atomic emission spectrometry, and water contact angle measurements. In addition, the applicability and biosafety of the SLA/1 × 1017-Ag and SLA/1 × 1018-Ag surfaces were determined via biocompatibility testing in vivo and in vitro. The results demonstrated that the physical and chemical properties of SLA/1 × 1017-Ag and SLA/1 × 1018-Ag surfaces were different to some extent. However, compared with SLA-Ti, silver-loaded TiN/Ag-modified SLA-Ti surfaces (SLA/1 × 1018-Ag) with enhanced bacteriostatis, osteogenesis, and biocompatibility have great potential for dental applications.
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Affiliation(s)
- Ming Ma
- Department
of Pediatric dentistry, School and Hospital of Stomatology, Guangdong
Engineering Research Center of Oral Restoration and Reconstruction,
Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative
Medicine, Guangzhou Medical University, Guangzhou, Guangdong 510182, China
| | - Mengli Zhao
- School
of Electronic Engineering, Chaohu University, Anhui 238024, China
| | - Ruotong Ji
- Department
of Pediatric dentistry, School and Hospital of Stomatology, Guangdong
Engineering Research Center of Oral Restoration and Reconstruction,
Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative
Medicine, Guangzhou Medical University, Guangzhou, Guangdong 510182, China
| | - Yi Guo
- Department
of Pediatric dentistry, School and Hospital of Stomatology, Guangdong
Engineering Research Center of Oral Restoration and Reconstruction,
Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative
Medicine, Guangzhou Medical University, Guangzhou, Guangdong 510182, China
| | - Dejun Li
- College
of Physics and Materials Science, Tianjin
Normal University, Tianjin 300387, China
| | - Sujuan Zeng
- Department
of Pediatric dentistry, School and Hospital of Stomatology, Guangdong
Engineering Research Center of Oral Restoration and Reconstruction,
Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative
Medicine, Guangzhou Medical University, Guangzhou, Guangdong 510182, China
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Zhu FD, Fu X, Ye HC, Ding HX, Gu LS, Zhang J, Guo YX, Feng G. Antibacterial activities of coumarin-3-carboxylic acid against Acidovorax citrulli. Front Microbiol 2023; 14:1207125. [PMID: 37799610 PMCID: PMC10547900 DOI: 10.3389/fmicb.2023.1207125] [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: 04/17/2023] [Accepted: 08/30/2023] [Indexed: 10/07/2023] Open
Abstract
Coumarin-3-carboxylic acid (3-CCA), previously screened from natural coumarins, was found to possess strong antibacterial activity against Acidovorax citrulli (Ac). In order to further evaluate the activity of this compound against plant bacterial pathogens and explore its potential value as a bactericidal lead compound, the activity of 3-CCA against 14 plant pathogenic bacteria in vitro and in vivo was tested. Results showed that 3-CCA exhibited strong in vitro activities against Ac, Ralstonia solanacearum, Xanthomonas axonopodis pv. manihotis, X. oryzae pv. oryzae, and Dickeya zeae with EC50 values ranging from 26.64 μg/mL to 40.73 μg/mL. Pot experiment results showed that 3-CCA had powerful protective and curative effects against Ac. In addition, the protective efficiency of 3-CCA was almost equivalent to that of thiodiazole copper at the same concentration. The results of SEM and TEM observation and conductivity tests showed that 3-CCA disrupted the integrity of the cell membrane and inhibited polar flagella growth. Furthermore, 3-CCA resulted in reductions in motility and extracellular exopolysaccharide (EPS) production of Ac while inhibiting the biofilm formation of Ac. These findings indicate that 3-CCA could be a promising natural lead compound against plant bacterial pathogens to explore novel antibacterial agents.
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Affiliation(s)
- Fa-Di Zhu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou, China
| | - Xin Fu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou, China
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Huo-Chun Ye
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou, China
- Key Laboratory of Monitoring and Control of Tropical Agricultural and Forest Invasive Alien Pests, Ministry of Agriculture, Haikou, China
| | - Hai-Xin Ding
- Key Laboratory of Organic Chemistry, Institute of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, China
| | - Liu-Shuang Gu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou, China
| | - Jing Zhang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou, China
- Key Laboratory of Monitoring and Control of Tropical Agricultural and Forest Invasive Alien Pests, Ministry of Agriculture, Haikou, China
| | - Yong-Xia Guo
- College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing, China
- Key Laboratory of Low-Carbon Green Agriculture in Northeastern China of Ministry of Agriculture and Rural Affairs, Daqing, China
| | - Gang Feng
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou, China
- Key Laboratory of Monitoring and Control of Tropical Agricultural and Forest Invasive Alien Pests, Ministry of Agriculture, Haikou, China
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6
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Rahman A, Rehman G, Shah N, Hamayun M, Ali S, Ali A, Shah SK, Khan W, Shah MIA, Alrefaei AF. Biosynthesis and Characterization of Silver Nanoparticles Using Tribulus terrestris Seeds: Revealed Promising Antidiabetic Potentials. Molecules 2023; 28:molecules28104203. [PMID: 37241943 DOI: 10.3390/molecules28104203] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/11/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
Green synthesis is the most effective and environmentally friendly way to produce nanoparticles. The present research aimed at the biosynthesizing of silver nanoparticles (AgNPs) using Tribulus terrestris seed extract as the reducing and stabilizing agent and investigating their anti-diabetic properties. Fourier transformation infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-Vis spectroscopy were used to analyze the synthesized silver nanoparticles from Tribulus terrestris (TT-AgNPs). The spectroscopic characterization revealed a surface Plasmon resonance band at 380 nm, which verified the development of TT-AgNPs. The transmittance peaks were observed at 596, 1450, 1631, 2856, 2921, and 3422 cm-1 through the FTIR spectrophotometer. The XRD spectrum showed four distinct diffraction peaks in the 2θ range at 20° to 60°. Intense peaks were at 26.32°, 30.70°, 44.70°, 56.07°, 53.75°, 66.28°, and 75.32°. The SEM analysis revealed that the prepared TT-AgNPs were clustered loosely with a smooth and spherical structure and were of relatively uniform size. The in vitro antidiabetic potential of TT-AgNPs was assessed by using glucose yeast uptake, glucose adsorption, and alpha-amylase assays. TT-AgNPs showed the highest activity (78.45 ± 0.84%) of glucose uptake by yeast at 80 µg/mL. In the glucose adsorption assay, the highest activity of TT-AgNPs was 10.40 ± 0.52% at 30 mM, while in the alpha-amylase assay, TT-AgNPs exhibited the maximum activity of 75.68 ± 0.11% at 100 µg/mL. The results indicate a substantial anti-diabetic effect of the TT-AgNPs. Furthermore, the in vivo antidiabetic study was performed on TT-AgNPs in streptozotocin-induced diabetic mice. After receiving TT-AgNPs treatment for 30 days, the mice were sacrificed for biochemical and histological analyses of pancreatic and liver samples, which demonstrated a good improvement when compared to the control group. Mice treated with TT-AgNPs showed a significant drop in blood sugar levels, showing that the biosynthesized TT-AgNPs have effective anti-diabetic properties.
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Affiliation(s)
- Abdur Rahman
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Gauhar Rehman
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Nasrullah Shah
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Muhammad Hamayun
- Department of Botany, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Sajid Ali
- Department of Horticulture and Life Science, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Abid Ali
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Said Karim Shah
- Department of Physics, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
| | - Waliullah Khan
- Department of Chemistry, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan
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Shang H, Zhang H, Zhao R, Yu M, Ma Y, Sun Z, Wu X, Xu Y. Selenium nanoparticles are effective in penetrating pine and causing high oxidative damage to Bursaphelenchus xylophilus in pine wilt disease control. PEST MANAGEMENT SCIENCE 2022; 78:3704-3716. [PMID: 35643940 DOI: 10.1002/ps.7013] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/20/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Research on selenium nanoparticles (SeNPs) in chemical defense and chemotherapy of plants has developed rapidly owing to their high microbial toxicity, environmental safety, and degradability. Pine wilt disease (PWD) threatens pine forests worldwide; however, it is difficult to kill the nematodes (Bursaphelenchus xylophilus) inside the tree that cause PWD using traditional pesticide formulations. SeNPs could be the key to controlling PWD. RESULTS In this study, approximately 50 nm SeNPs were prepared using a simple and green method, and chitosan was used to increase their biocompatibility and stability. The preparation and characterization results showed that the prepared SeNPs coated with chitosan (SeNPs@CS) were spherical and evenly dispersed. The bioassay results showed that SeNPs@CS had an LC50 of 15.627 mg L-1 against B. xylophilus. In addition, the killing mechanism of SeNPs@CS against B. xylophilus was studied. Confocal microscopy and transmission electron microscopy demonstrated that B. xylophilus were killed by reactive oxygen species, and the penetration of nano-form materials to B. xylophilus was higher than that of non-nano-form materials. To verify the effective penetration of SeNPs in pine tissues, Cy5-labeled SeNPs@CS was observed inside pine needles and branches using frozen sections and confocal microscopy. In addition, the cytotoxicity of SeO2 and SeNPs@CS was tested, and the results showed that the cytotoxicity of SeNPs@CS to MC3T3-E1 cells was reduced. CONCLUSION These results show that SeNPs are expected to be used as a new strategy for the control of PWD with oxidative damage and high penetration to B. xylophilus and effective target penetration and biosafety. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Hongyi Shang
- College of Science, China Agricultural University, Beijing, China
| | - Hongyan Zhang
- College of Science, China Agricultural University, Beijing, China
| | - Rui Zhao
- College of Science, China Agricultural University, Beijing, China
| | - Meng Yu
- College of Science, China Agricultural University, Beijing, China
| | - Yingjian Ma
- College of Science, China Agricultural University, Beijing, China
| | - Zhe Sun
- College of Science, China Agricultural University, Beijing, China
| | - Xuemin Wu
- College of Science, China Agricultural University, Beijing, China
| | - Yong Xu
- College of Science, China Agricultural University, Beijing, China
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Solar radiation-induced synthesis of bacterial cellulose/silver nanoparticles (BC/AgNPs) composite using BC as reducing and capping agent. Bioprocess Biosyst Eng 2021; 45:257-268. [PMID: 34665338 DOI: 10.1007/s00449-021-02655-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 10/07/2021] [Indexed: 01/12/2023]
Abstract
In the present work, a simple, novel, and ecofriendly method for synthesis of silver nanoparticles (AgNPs) and BC/AgNP composite using bacterial cellulose (BC) nanofibers soaked in AgNO3 solution under induction action of solar radiation. The photochemical reduction of silver Ag + ions into silver nanoparticles (Ago) was confirmed using UV visible spectra; the surface plasmon resonance of synthesized AgNPs was localized around 425 nm. The mean diameter of AgNPs obtained by DLS analysis was 52.0 nm with a zeta potential value of - 9.98 mV. TEM images showed a spherical shape of AgNPs. The formation of BC/AgNP composite was confirmed by FESEM, EDX, FTIR, and XRD analysis. FESEM images for BC showed the 3D structures of BC nanofibers and the deposited AgNPs in the BC crystalline nanofibers. XRD measurements revealed the high crystallinity of BC and BC/AgNP composite with crystal sizes of 5.13 and 5.6 nm, respectively. BC/AgNP composite and AgNPs exhibited strong antibacterial activity against both Gram-positive and Gram-negative bacteria. The present work introduces a facile green approach for BC/AgNP composite synthesis and its utility as potential food packaging and wound dressings, as well as sunlight indicator application.
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