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Dias Barroso FD, da Silva LJ, Queiroz HA, do Amaral Valente Sá LG, da Silva AR, da Silva CR, de Andrade Neto JB, Cavalcanti BC, de Moraes MO, Pinazo A, Pérez L, Nobre Júnior HV. Biosurfactant complexed with arginine has antibiofilm activity against methicillin-resistant Staphylococcus aureus. Future Microbiol 2024; 19:667-679. [PMID: 38864708 PMCID: PMC11259079 DOI: 10.2217/fmb-2023-0271] [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] [Received: 12/01/2023] [Accepted: 02/01/2024] [Indexed: 06/13/2024] Open
Abstract
Aim: The present study investigated the antimicrobial effectiveness of a rhamnolipid complexed with arginine (RLMIX_Arg) against planktonic cells and biofilms of methicillin-resistant Staphylococcus aureus (MRSA). Methodology: Susceptibility testing was performed using the Clinical & Laboratory Standards Institute protocol: M07-A10, checkerboard test, biofilm in plates and catheters and flow cytometry were used. Result: RLMIX_Arg has bactericidal and synergistic activity with oxacillin. RLMIX_Arg inhibits the formation of MRSA biofilms on plates at sub-inhibitory concentrations and has antibiofilm action against MRSA in peripheral venous catheters. Catheters impregnated with RLMIX_Arg reduce the formation of MRSA biofilms. Conclusion: RLMIX_Arg exhibits potential for application in preventing infections related to methicillin-resistant S. aureus biofilms.
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Affiliation(s)
- Fatima Daiana Dias Barroso
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Lisandra Juvêncio da Silva
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Helaine Almeida Queiroz
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
| | - Lívia Gurgel do Amaral Valente Sá
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Christus University Center (UNICHRISTUS), Fortaleza, CE, Brazil
| | | | - Cecília Rocha da Silva
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
| | - João Batista de Andrade Neto
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
- Christus University Center (UNICHRISTUS), Fortaleza, CE, Brazil
| | - Bruno Coêlho Cavalcanti
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- Department of Physiology & Pharmacology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Manoel Odorico de Moraes
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- Department of Physiology & Pharmacology, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Aurora Pinazo
- Department of Surfactants & Nanobiotechnology, IQAC-CSIC, Barcelona, Spain
| | - Lourdes Pérez
- Department of Surfactants & Nanobiotechnology, IQAC-CSIC, Barcelona, Spain
| | - Hélio Vitoriano Nobre Júnior
- Drug Research & Development Center, Federal University of Ceará, Fortaleza, CE, Brazil
- School of Pharmacy, Laboratory of Bioprospection of Antimicrobial Molecules (LABIMAN), Federal University of Ceará, Fortaleza, CE, Brazil
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Albasri HM, Almohammadi AA, Alhhazmi A, Bukhari DA, Waznah MS, Mawad AMM. Production and characterization of rhamnolipid biosurfactant from thermophilic Geobacillus stearothermophilus bacterium isolated from Uhud mountain. Front Microbiol 2024; 15:1358175. [PMID: 38873141 PMCID: PMC11173098 DOI: 10.3389/fmicb.2024.1358175] [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: 12/19/2023] [Accepted: 05/13/2024] [Indexed: 06/15/2024] Open
Abstract
Introduction Biosurfactants have been given considerable attention as they are potential candidates for several biotechnological applications. Materials and methods In this study, a promising thermophilic biosurfactant-producing HA-2 was isolated from the volcanic and arid region of Uhud mountain, Madinah, Saudi Arabia. It was identified using 16S rRNA gene sequence analysis. The biosurfactant production ability was screened using different methods such as the drop collapse test, oil spreading test, hemolytic activity test, CTAB test, and emulsification index. The ability of rhamnolipid production by the tested strain was confirmed by the polymerase chain reaction (PCR) of rhlAB. The affinity of thermophilic HA-2 to hydrophobic substrates was also investigated. Optimization of biosurfactant production was conducted. The biological activities of produced surfactant were investigated. Results and discussion The isolated HA-1 was identified as Geobacillus stearothermophilus strain OR911984. It could utilize waste sunflower frying oil (WSFF) oil as a low-cost carbon source. It showed high emulsification activity (52 ± 0.0%) and positive results toward other biosurfactant screening tests. The strain showed high cell adhesion to hexane with 41.2% cell surface hydrophobicity. Fourier-transform infrared (FTIR) spectra indicated the presence of hydrophobic chains that comprise lipids, sugars, and hydrophilic glycolipid components. The optimization results showed the optimal factors included potato peel as a carbon source with 68.8% emulsification activity, yeast extract as a nitrogen source with 60% emulsification activity, a pH of 9 (56.6%), and a temperature of 50° (72%). The kinetics showed that optimum biosurfactant production (572.4 mg/L) was recorded at 5 days of incubation. The produced rhamnolipid biosurfactant showed high antimicrobial activity against some human and plant pathogenic bacterial and fungal isolates and high antioxidant activity (90.4%). In addition, it enhanced wheat (Triticum aestivum) growth, with the greatest enhancement obtained with the 5% concentration. Therefore, thermophilic G. stearothermophilus is a promising rhamnolipid biosurfactant producer that utilizes many organic wastes. The produced biosurfactant could be applied as a promising emulsifier, antimicrobial, antioxidant, and plant growth promoter.
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Affiliation(s)
- Hibah M. Albasri
- Department of Biology, College of Science, Taibah University, Madinah, Saudi Arabia
| | - Asmaa A. Almohammadi
- Department of Biology, College of Science, Taibah University, Madinah, Saudi Arabia
| | - Areej Alhhazmi
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, Taibah University, Madinah, Saudi Arabia
| | - Duaa A. Bukhari
- Department of Biology, College of Science, Taibah University, Madinah, Saudi Arabia
| | - Moayad S. Waznah
- Department of Biology, College of Science, Taibah University, Madinah, Saudi Arabia
| | - Asmaa M. M. Mawad
- Department of Biology, College of Science, Taibah University, Madinah, Saudi Arabia
- Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut, Egypt
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Yang S, Ma L, Xu X, Peng Q, Zhong H, Gong Y, Shi L, He M, Shi B, Qiao Y. Physiological and Transcriptomic Analyses of Escherichia coli Serotype O157:H7 in Response to Rhamnolipid Treatment. Microorganisms 2023; 11:2112. [PMID: 37630672 PMCID: PMC10459150 DOI: 10.3390/microorganisms11082112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/13/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Rhamnolipid (RL) can inhibit biofilm formation of Escherichia coli O157:H7, but the associated mechanism remains unknown. We here conducted comparative physiological and transcriptomic analyses of cultures treated with RL and untreated cultures to elucidate a potential mechanism by which RL may inhibit biofilm formation in E. coli O157:H7. Anti-biofilm assays showed that over 70% of the E. coli O157:H7 biofilm formation capacity was inhibited by treatment with 0.25-1 mg/mL of RL. Cellular-level physiological analysis revealed that a high concentration of RL significantly reduced outer membrane hydrophobicity. E. coli cell membrane integrity and permeability were also significantly affected by RL due to an increase in the release of lipopolysaccharide (LPS) from the cell membrane. Furthermore, transcriptomic profiling showed 2601 differentially expressed genes (1344 up-regulated and 1257 down-regulated) in cells treated with RL compared to untreated cells. Functional enrichment analysis indicated that RL treatment up-regulated biosynthetic genes responsible for LPS synthesis, outer membrane protein synthesis, and flagellar assembly, and down-regulated genes required for poly-N-acetyl-glucosamine biosynthesis and genes present in the locus of enterocyte effacement pathogenicity island. In summary, RL treatment inhibited E. coli O157:H7 biofilm formation by modifying key outer membrane surface properties and expression levels of adhesion genes.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Bo Shi
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (S.Y.); (L.M.); (X.X.); (Q.P.); (H.Z.); (Y.G.); (L.S.); (M.H.)
| | - Yu Qiao
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; (S.Y.); (L.M.); (X.X.); (Q.P.); (H.Z.); (Y.G.); (L.S.); (M.H.)
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4
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Wei X, Peng H, Li Y, Meng B, Wang S, Bi S, Zhao X. Pyrethroids exposure alters the community and function of the internal microbiota in Aedes albopictus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114579. [PMID: 36706527 DOI: 10.1016/j.ecoenv.2023.114579] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/10/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Large amounts of insecticides bring selection pressure and then develop insecticide resistance in Aedes albopictus. This study demonstrated for the first time the effect of pyrethroid exposure on the internal microbiota in Ae. albopictus. 36, 48, 57 strains of virgin adult Ae. albopictus were exposed to the pyrethroids deltamethrin (Dme group), β-cypermethrin (Bcy group), and cis-permethrin (Cper group), respectively, with n-hexane exposure (Hex group) as the controls (n = 36). The internal microbiota community and functions were analyzed based on the metagenomic analysis. The analysis of similarity (ANOSIM) results showed that the Hex/Bcy (p = 0.001), Hex/Cper (p = 0.006), Hex/Dme (p = 0.001) groups were well separated, and the internal microbes of Ae. albopictus vary in the composition and functions depending on the type of pyrethroid insecticide they are applied. Four short chain fatty acid-producing genera, Butyricimonas, Prevotellaceae, Anaerococcus, Pseudorhodobacter were specifically absent in the pyrethroid-exposed mosquitoes. Morganella and Streptomyces were significantly enriched in cis-permethrin-exposed mosquitoes. Wolbachia and Chryseobacterium showed significant enrichment in β-cypermethrin-exposed mosquitoes. Pseudomonas was significantly abundant in deltamethrin-exposed mosquitoes. The significant proliferation of these bacteria may be closely related to insecticide metabolism. Our study recapitulated a specifically enhanced metabolic networks relevant to the exposure to cis-permethrin and β-cypermethrin, respectively. Benzaldehyde dehydrogenase (EC 1.2.1.28), key enzyme in aromatic compounds metabolism, was detected enhanced in cis-permethrin and β-cypermethrin exposed mosquitoes. The internal microbiota metabolism of aromatic compounds may be important influencing factors for pyrethroid resistance. Future work will be needed to elucidate the specific mechanisms by which mosquito microbiota influences host resistance and vector ability.
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Affiliation(s)
- Xiao Wei
- Centers for Disease Control and Prevention of PLA, Beijing, China
| | - Hong Peng
- Centers for Disease Control and Prevention of PLA, Beijing, China
| | - Yan Li
- Centers for Disease Control and Prevention of PLA, Beijing, China
| | - Biao Meng
- Centers for Disease Control and Prevention of PLA, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - Shichao Wang
- Centers for Disease Control and Prevention of PLA, Beijing, China
| | - Shanzheng Bi
- Centers for Disease Control and Prevention of PLA, Beijing, China
| | - Xiangna Zhao
- Centers for Disease Control and Prevention of PLA, Beijing, China; Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.
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Bertuso PDC, Marangon CA, Nitschke M. Susceptibility of Vegetative Cells and Endospores of Bacillus cereus to Rhamnolipid Biosurfactants and Their Potential Application in Dairy. Microorganisms 2022; 10:microorganisms10091860. [PMID: 36144462 PMCID: PMC9505079 DOI: 10.3390/microorganisms10091860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/02/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Bacillus cereus is a Gram-positive, endospore-forming bacterium well-known as a food pathogen that causes great losses in the food industry, especially in dairy. In this study, rhamnolipid (RL) biosurfactants were evaluated as a bio-based alternative for controlling the growth of vegetative cells and endospores of B. cereus. RLs were tested against 14 B. cereus strains isolated from different types of foodstuffs. The antimicrobial activity against vegetative cells and endospores revealed minimal inhibitory concentration (MIC) values of 0.098 mg/mL for almost all strains tested and minimal bactericidal concentration (MBC) varying between 0.098 and >25 mg/mL. The presence of RLs inhibited endospore germination by more than 99%, reducing by 5.5 log the outgrowth of strain 0426. Scanning and transmission electron microscopy confirmed that exposure to RL causes damage to the structure of endospores. When skim milk was utilized as a food model, RL inhibited the growth of vegetative cells and endospores of B. cereus, showing MBC of 3.13 mg/mL for the vegetative cells of strain 0426. The surfactant also reduced bacterial growth in milk at refrigerator temperature. The results suggest that RLs are promising candidates for the development of novel strategies to control B. cereus in the food industry.
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Affiliation(s)
- Paula de Camargo Bertuso
- Interunits Graduate Program in Bioengineering (EESC/FMRP/IQSC), University of São Paulo, Trabalhador São-Carlense Av., 400, São Carlos 13566-590, SP, Brazil
| | - Crisiane Aparecida Marangon
- Embrapa Instrumentation, Nanotechnology National Laboratory for Agriculture (LNNA), Rua XV de Novembro, 1452, São Carlos 13560-979, SP, Brazil
| | - Marcia Nitschke
- São Carlos Institute of Chemistry (IQSC), University of São Paulo, Trabalhador São-Carlense Av., 400, P.O. Box 780, São Carlos 13560-970, SP, Brazil
- Correspondence:
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Milk phospholipids-based nanostructures functionalized with rhamnolipids and bacteriocin: Intrinsic and synergistic antimicrobial activity for cheese preservation. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Sharma S, Pandey LM. Integration of biosorption and biodegradation in a fed-batch mode for the enhanced crude oil remediation. Lett Appl Microbiol 2021; 73:471-476. [PMID: 34219252 DOI: 10.1111/lam.13535] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 01/19/2023]
Abstract
Microbial bioremediation of oil-contaminated sites is still a challenge due to the slower rate and susceptibility of microbes to a higher concentration of oil. The poor bioavailability, hydrophobicity, and non-polar nature of oil slow down microbial biodegradation. In this study, biodegradation of crude oil is performed in fed-batch mode using an oil-degrader Pseudomonas aeruginosa to address the issue of substrate toxicity. The slower biodegradation was integrated with faster biosorption for effective oil remediation. Highly fibrous and porous sugarcane bagasse was surface modified with hydrophobic octyl groups to improve the surface-oil interactions. The microbe showed 2 folds enhanced oil degradation in the fed-batch study, which was further increased by 1·5 folds in the integrated biosorption coupled biodegradation approach. The biosorption-assisted biodegradation approach supported the microbial growth to 2 folds higher than the fed-batch study without biosorbent. The analysis of biosurfactant production indicated the 3 folds higher concentration in fed-batch modes as compared to batch study. In the integrated strategy, the concentration of contaminant (oil) reduces to quite a tolerable level to microbes, which improved effective metabolism and thus overall biodegradation. This study puts forward a promising strategy for improved degradation of hazardous hydrophobic contaminants in a sustainable, economic and eco-friendly manner.
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Affiliation(s)
- S Sharma
- Bio-interface & Environmental Engineering Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam, India
| | - L M Pandey
- Bio-interface & Environmental Engineering Lab, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam, India
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Önem E, Sarısu HC, Özaydın AG, Muhammed MT, Ak A. Phytochemical profile, antimicrobial, and anti-quorum sensing properties of fruit stalks of Prunus avium L. Lett Appl Microbiol 2021; 73:426-437. [PMID: 34173244 DOI: 10.1111/lam.13528] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/11/2021] [Accepted: 06/14/2021] [Indexed: 11/30/2022]
Abstract
The aim of this study is to investigate the phytochemical contents and antibacterial properties of 2-year Prunus avium L. standard cultivars [Cristalina (Cr), 0900 Ziraat (Zr)] and to elucidate the mechanism of action of the extracts on the quorum sensing (QS) system by using homology modelling and molecular docking. Phenolic contents of methanol extract of Cr and Zr stalks were detected by HPLC. As a result, catechin hydrate (6364·67-8127·93 µg g-1 ) and chlorogenic acid (998·81-1273·4 µg g-1 ) were found to be the highest in stalk extracts in the two varieties in 2017. All extracts had inhibitory effect on Gram-positive bacteria. Stalk extract of Zr showed higher inhibition rate (86%) on swarming motility. Stalk samples of Zr collected in 2017 and 2018 also reduced biofilm formation by 75 and 73%, respectively. The computational analysis revealed that one of the major component of the extracts, chlorogenic acid, was able to bind to the QS system receptors, LasR, RhlR, and PqsR. Therefore, the mechanism of decreasing the production of virulence factors by the extracts might be through inhibiting these receptors and thus interfering with the QS system.
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Affiliation(s)
- E Önem
- Faculty of Pharmacy, Suleyman Demirel University, Isparta, Turkey
| | - H C Sarısu
- Republic of Turkey Ministry of Food Agriculture and Livestock, Fruit Research Institute, Isparta, Turkey
| | - A G Özaydın
- YETEM-Innovative Technology Application and Research Center, Suleyman Demirel University, Isparta, Turkey
| | - M T Muhammed
- Faculty of Pharmacy, Suleyman Demirel University, Isparta, Turkey
| | - A Ak
- Vocational School of Health Services, Kocaeli University, Kocaeli, Turkey
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Li K, Liu Z, Liu X, Wang L, Zhao J, Zhang X, Kong Y, Chen M. An anti-biofilm material: polysaccharides prevent the precipitation reaction of silver ions and chloride ions and lead to the synthesis of nano silver chloride. NANOTECHNOLOGY 2021; 32:315601. [PMID: 33836506 DOI: 10.1088/1361-6528/abf68e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
The formation of biofilm is one of the causes of bacterial pathogenicity and drug resistance. Recent studies have reported a variety of anti-biofilm materials and achieved good results. However, it is still very important to develop some materials with wider application scenarios or higher biofilm resistance. In this study, a new method to rapidly synthesize nano silver chloride with anti-biofilm activity is proposed. It is a generalizable method in which bacterial extracellular polysaccharides are used to adsorb silver ions, thereby inhibiting the formation of white large-size silver chloride precipitates, and then ultraviolet light is used to induce the synthesis of small-sized nano silver chloride. A variety of polysaccharides can be utilized in the synthesis of nano silver chloride particles. The generated complex was characterized by XRD, UV-vis, EDX, FTIR and TEM methods. Further, the novel complex was found to show highly effective anti-biofilm and bactericidal activity within the biosafety concentration. In view of the high stability of nano sliver chloride, we propose that the novel nano material has the potential as a long-term antibacterial material.
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Affiliation(s)
- Kun Li
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao, Shandong, 266237, People's Republic of China
| | - Zhaoxi Liu
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao, Shandong, 266237, People's Republic of China
| | - Xiaoyu Liu
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao, Shandong, 266237, People's Republic of China
| | - Lei Wang
- School of Life Sciences, Ludong University, Yantai, Shandong, People's Republic of China
| | - Jiayu Zhao
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao, Shandong, 266237, People's Republic of China
| | - Xunlian Zhang
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao, Shandong, 266237, People's Republic of China
| | - Yun Kong
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao, Shandong, 266237, People's Republic of China
| | - Min Chen
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao, Shandong, 266237, People's Republic of China
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