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Bromberg L, Magariños B, Concheiro A, Hatton TA, Alvarez-Lorenzo C. Nonleaching Biocidal N-Halamine-Functionalized Polyamine-, Guanidine-, and Hydantoin-Based Coatings. Ind Eng Chem Res 2024; 63:6268-6278. [PMID: 38617110 PMCID: PMC11010268 DOI: 10.1021/acs.iecr.4c00320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/01/2024] [Accepted: 03/12/2024] [Indexed: 04/16/2024]
Abstract
Fibrous materials with inherent antimicrobial properties can help in real-time deactivation of microorganisms, enabling multiple uses while reducing secondary infections. Coatings with antiviral polymers enhance the surface functionality for existing and potential future pandemics. Herein, we demonstrated a straightforward route toward biocidal surface creation using polymers with nucleophilic biguanide, guanidine, and hydantoin groups that are covalently attached onto a solid support. Biocidal poly(N-vinylguanidine) (PVG) and poly(allylamine-co-4-aminopyridine-co-5-(4-hydroxybenzylidene)hydantoin) (PAH) were introduced for coating applications along with commercially available polyvinylamine (PVAm) and poly(hexamethylene biguanide) (PHMB). Nonleaching coatings were created by first fabricating bifunctional siloxane or isocyanate precursor coatings on the cotton, nylon-cotton, and glass fiber fabric, followed by the polymer attachment. The developed grafting methods ensured the stability of the coating and the reuse of the material while maintaining the biocidal properties. Halogenation of polymer-coated fabric was conducted by aqueous solutions of sodium hypochlorite or in situ generation of hypobromous acid (HOBr), resulting in surfaces coated by N-halamines with high contents of active > N-Cl or > N-Br groups. The polymer-coated fabrics were stable in multiple laundry cycles and maintained hydrophilic character after coating and halogenation. Halogenated polymer-coated fabrics completely inactivated human respiratory coronavirus based on a contact-killing mechanism and were shown to be reusable after recharging with bromine or chlorine.
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Affiliation(s)
- Lev Bromberg
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Beatriz Magariños
- Department
of Microbiology and Parasitology, Facultad de Biología, CIBUS, Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - Angel Concheiro
- Department
of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma
Group (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS),
and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
| | - T. Alan Hatton
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Carmen Alvarez-Lorenzo
- Department
of Pharmacology, Pharmacy and Pharmaceutical Technology, I+D Farma
Group (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS),
and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago
de Compostela, Spain
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2
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El Sadda RR, Eissa MS, Elafndi RK, Moawed EA, El-Zahed MM, Saad HR. Synthesis and biological evaluation of titanium dioxide/thiopolyurethane composite: anticancer and antibacterial effects. BMC Chem 2024; 18:35. [PMID: 38368376 PMCID: PMC10874576 DOI: 10.1186/s13065-024-01138-x] [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: 09/26/2023] [Accepted: 02/06/2024] [Indexed: 02/19/2024] Open
Abstract
Nanocomposites incorporating titanium dioxide (TiO2) have a significant potential for various industrial and medical applications. These nanocomposites exhibit selectivity as antimicrobial and anticancer agents. Antimicrobial activity is crucial for medical uses, including applications in food processing, packaging, and surgical instruments. Additionally, these nanocomposites exhibit selectivity as anticancer agents. A stable nanocomposite as a new anticancer and antibacterial chemical was prepared by coupling titanium dioxide nanoparticles with a polyurethane foam matrix through the thiourea group. The titanium dioxide/thiopolyurethane nanocomposite (TPU/TiO2) was synthesized from low-cost Ilmenite ore and commercial polyurethane foam. EDX analysis was used to determine the elemental composition of the titanium dioxide (TiO2) matrix. TiO2NPs were synthesized and were characterized using TEM, XRD, IR, and UV-Vis spectra. TiO2NPs and TPU foam formed a novel composite. The MTT assay assessed Cisplatin and HepG-2 and MCF-7 cytotoxicity in vitro. Its IC50 values for HepG-2 and MCF-7 were 122.99 ± 4.07 and 201.86 ± 6.82 µg/mL, respectively. The TPU/TiO2 exhibits concentration-dependent cytotoxicity against MCF-7 and HepG-2 cells in vitro. The selective index was measured against both cell lines; it showed its safety against healthy cells. Agar well-diffusion exhibited good inhibition zones against Escherichia coli (12 mm), Bacillus cereus (10 mm), and Aspergillus niger (19 mm). TEM of TPU/TiO2-treated bacteria showed ultrastructure changes, including plasma membrane detachment from the cell wall, which caused lysis and bacterial death. TPU/TiO2 can treat cancer and inhibit microbes in dentures and other items. Also, TPU/TiO2 inhibits E. coli, B. cereus, and A. niger microbial strains.
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Affiliation(s)
- Rana R El Sadda
- Chemistry Department, Faculty of Science, Damietta University, P.O. Box 34517, New Damietta, Egypt.
| | - Mai S Eissa
- Chemistry Department, Faculty of Science, Damietta University, P.O. Box 34517, New Damietta, Egypt
| | - Rokaya K Elafndi
- Chemistry Department, Faculty of Science, Damietta University, P.O. Box 34517, New Damietta, Egypt
| | - Elhossein A Moawed
- Chemistry Department, Faculty of Science, Damietta University, P.O. Box 34517, New Damietta, Egypt
| | - Mohamed M El-Zahed
- Botany and Microbiology Department, Faculty of Science, Damietta University, New Damietta, Egypt
| | - Hoda R Saad
- Geology Department, Faulty of Science, Damietta University, New Damietta, Egypt
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3
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Rudlong AM, Moreno Reyes E, Goddard JM. Synthesis and Characterization of Antimicrobial Hydrophobic Polyurethane. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4446. [PMID: 37374629 DOI: 10.3390/ma16124446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/07/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023]
Abstract
Food borne illness remains a major threat to public health despite new governmental guidelines and industry standards. Cross-contamination of both pathogenic and spoilage bacteria from the manufacturing environment can promote consumer illness and food spoilage. While there is guidance in cleaning and sanitation procedures, manufacturing facilities can develop bacterial harborage sites in hard-to-reach areas. New technologies to eliminate these harborage sites include chemically modified coatings that can improve surface characteristics or incorporate embedded antibacterial compounds. In this article we synthesize a 16 carbon length quaternary ammonium bromide (C16QAB) modified polyurethane and perfluoropolyether (PFPE) copolymer coating with low surface energy and bactericidal properties. The introduction of PFPE to the polyurethane coatings lowered the critical surface tension from 18.07 mN m-1 in unmodified polyurethane to 13.14 mN m-1 in modified polyurethane. C16QAB + PFPE polyurethane was bactericidal against Listeria monocytogenes (>6 log reduction) and Salmonella enterica (>3 log reduction) after just eight hours of contact. The combination of low surface tension from the perfluoropolyether and antimicrobial from the quaternary ammonium bromide produced a multifunctional polyurethane coating suitable for coating on non-food contact food production surfaces to prevent survival and persistence of pathogenic and spoilage organisms.
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Affiliation(s)
- Autumn M Rudlong
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA
| | | | - Julie M Goddard
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA
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4
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Salgado C, Cue R, Yuste V, Montalvillo-Jiménez L, Prendes P, Paz S, Vázquez-Calvo Á, Alcamí A, García C, Martínez-Campos E, Bosch P. Clear polyurethane coatings with excellent virucidal properties: Preparation, characterization and rapid inactivation of human coronaviruses 229E and SARS-CoV-2. APPLIED MATERIALS TODAY 2023; 32:101828. [PMID: 37317691 PMCID: PMC10147448 DOI: 10.1016/j.apmt.2023.101828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 06/16/2023]
Abstract
Commercial polyurethane (PU) coating formulations have been modified with 1-(hydroxymethyl)-5,5-dimethylhydantoin (HMD) both in bulk (0.5 and 1% w/w) and onto the coatings surface as an N-halamine precursor, to obtain clear coatings with high virucidal activity. Upon immersion in diluted chlorine bleaching, the hydantoin structure on the grafted PU membranes was transformed into N-halamine groups, with a high surface chlorine concentration (40-43μg/cm2). Fourier transform infrared spectroscopy (FTIR) spectroscopy, thermogravimetric analysis (TGA), energy-dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS) and iodometric titration were used to characterize the coatings and quantify the chlorine contents of the PU membranes after chlorination. Biological evaluation of their activity against Staphylococcus aureus (Gram-positive bacteria) and human coronaviruses HCoV-229E and SARS-CoV-2 was performed, and high inactivation of these pathogens was observed after short contact times. The inactivation of HCoV-229E was higher than 98% for all modified samples after just 30 minutes, whereas it was necessary 12 hours of contact time for complete inactivation of SARS-CoV-2. The coatings were fully rechargeable by immersion in diluted chlorine bleach (2% v/v) for at least 5 chlorination-dechlorination cycles. Moreover, the performance of the antivirus efficiency of the coatings is considered as long-lasting, because experiments of reinfection of the coatings with HCoV-229E coronavirus did not show any loss of the virucidal activity after three consecutive infection cycles without reactivation of the N-halamine groups.
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Affiliation(s)
- Cástor Salgado
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
| | - Raquel Cue
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
- Grupo de Síntesis Orgánica y Bioevaluación, Instituto Pluridisciplinar (UCM), Unidad Asociada al ICTP, IQM (CSIC), Paseo de Juan XXIII 1, 28040 Madrid, Spain
| | - Vanesa Yuste
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
| | - Laura Montalvillo-Jiménez
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
| | - Pilar Prendes
- GAIRESA, Lugar Outeiro 8, 15551 Valdoviño, A Coruña, Spain
| | - Senén Paz
- GAIRESA, Lugar Outeiro 8, 15551 Valdoviño, A Coruña, Spain
| | - Ángela Vázquez-Calvo
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Nicolás Cabrera 1, 28049, Madrid, Spain
| | - Antonio Alcamí
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Nicolás Cabrera 1, 28049, Madrid, Spain
| | - Carolina García
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
| | - Enrique Martínez-Campos
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
- Grupo de Síntesis Orgánica y Bioevaluación, Instituto Pluridisciplinar (UCM), Unidad Asociada al ICTP, IQM (CSIC), Paseo de Juan XXIII 1, 28040 Madrid, Spain
| | - Paula Bosch
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
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5
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Demir B, Taylor A, Broughton R, Huang TS, Bozack M, Worley S. N-halamine surface coating for mitigation of biofilm and microbial contamination in water systems for space travel. Biofilm 2022; 4:100076. [PMID: 35572468 PMCID: PMC9097693 DOI: 10.1016/j.bioflm.2022.100076] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/11/2022] [Accepted: 04/11/2022] [Indexed: 11/07/2022] Open
Abstract
A copolymer termed HASL produced from monomeric units of 2-acrylamido-2-methyl-1-(5-methylhydantoinyl)propane (HA) and of 3-(trimethoxysilyl)propyl methacrylate (SL) has been coated onto stainless steel and Inconel™ substrates, which upon halogenation with either aqueous oxidative chlorine or bromine, became antimicrobial. It has been demonstrated that the halogenated stainless steel and Inconel™ substrates were effective in producing 6 to 7 log inactivations of Staphylococcus aureus and Escherichia coli O157:H7 within about 10 min, and in prevention of Pseudomonas aeruginosa biofilm formation over a period of at least 72 h on the stainless steel substrates. Upon loss of halogen, the HASL coating could be re-charged with aqueous halogen. The HASL coating was easily applied to the substrates via a simple dip-coating method and was reasonably stable to contact with water. Both chlorinated substrates could be loaded with at least 6 × 1016 oxidative Cl atoms per cm2 and maintained a loading of greater than 1 × 1016 chlorine atoms per cm2 for a period of 3-7 days while agitated in aqueous solution. After loss of chlorine to a level below 1 × 1016 atoms per cm2, the substrates could be recharged to the 6 × 1016 Cl atoms per cm2 level for at least 5 times over a 28 day period. The new antimicrobial coating technology has potential for use in a variety of important applications, particularly for water treatment and storage on spacecraft.
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Affiliation(s)
- Buket Demir
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, 36849, USA
- Halomine, Inc., Ithaca, NY, 14850, USA
| | - Alicia Taylor
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, 36849, USA
| | - R.M. Broughton
- Center for Polymers and Advanced Composites, Department of Mechanical Engineering, Auburn University, Auburn, AL, 36849, USA
| | - T.-S. Huang
- Department of Poultry Science, Auburn University, Auburn, AL, 36849, USA
| | - M.J. Bozack
- Department of Physics, Auburn University, Auburn, AL, 36849, USA
| | - S.D. Worley
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, 36849, USA
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6
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Murashevych B, Stepanskyi D, Toropin V, Mironenko A, Maslak H, Burmistrov K, Teteriuk N. Virucidal properties of new multifunctional fibrous N-halamine-immobilized styrene-divinylbenzene copolymers. J BIOACT COMPAT POL 2022. [DOI: 10.1177/08839115221121852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Virucidal properties of N-chlorosulfonamides immobilized on fibrous styrene-divinylbenzene copolymers have been studied. Corresponding materials with different functional group structures and chlorine content have been synthesized on FIBAN polymer carriers in the form of staple fibers and non-woven fabrics. The study has been conducted in general accordance with EN 14476 standard on poliovirus type-1 and adenovirus type-5. It has been found that all tested samples exhibit pronounced virucidal activity: regardless of the carrier polymer form, sodium N-chlorosulfonamides inactivated both viruses in less than 30 s, and N,N-dichlorosulfonamides—in 30–60 s. The main mechanism of action of these materials, obviously, consists in the emission of active chlorine from the functional group into the treated medium under the action of the amino groups of virus fragments and cell culture. Considering the previously described antimicrobial and reparative properties of such materials, as well as their satisfactory physical and mechanical properties, the synthesized polymers are promising for the creation of medical devices with increased resistance to microbial contamination, such as protective masks, filter elements, long-acting wound dressings, and others.
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Affiliation(s)
- Bohdan Murashevych
- Department of Biochemistry and Medical Chemistry, Dnipro State Medical University, Dnipro, Ukraine
| | - Dmytro Stepanskyi
- Department of Microbiology, Virology, Immunology and Epidemiology, Dnipro State Medical University, Dnipro, Ukraine
| | - Volodymyr Toropin
- Department of Pharmacy and Technology of Organic Substances, Ukrainian State University of Chemical Technology, Dnipro, Ukraine
| | - Alla Mironenko
- Department of Respiratory and Other Viral Infections, L.V. Gromashevsky Institute of Epidemiology and Infectious Diseases, Kyiv, Ukraine
| | - Hanna Maslak
- Department of Biochemistry and Medical Chemistry, Dnipro State Medical University, Dnipro, Ukraine
| | - Konstantin Burmistrov
- Department of Pharmacy and Technology of Organic Substances, Ukrainian State University of Chemical Technology, Dnipro, Ukraine
| | - Nataliia Teteriuk
- Department of Respiratory and Other Viral Infections, L.V. Gromashevsky Institute of Epidemiology and Infectious Diseases, Kyiv, Ukraine
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7
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Liu Q, Zhang Y, Liu W, Wang L, Choi YW, Fulton M, Fuchs S, Shariati K, Qiao M, Bernat V, Ma M. A Broad-Spectrum Antimicrobial and Antiviral Membrane Inactivates SARS-CoV-2 in Minutes. ADVANCED FUNCTIONAL MATERIALS 2021; 31:2103477. [PMID: 34512227 PMCID: PMC8420574 DOI: 10.1002/adfm.202103477] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/25/2021] [Indexed: 05/27/2023]
Abstract
SARS-CoV-2, the virus that caused the COVID-19 pandemic, can remain viable and infectious on surfaces for days, posing a potential risk for fomite transmission. Liquid-based disinfectants, such as chlorine-based ones, have played an indispensable role in decontaminating surfaces but they do not provide prolonged protection from recontamination. Here a safe, inexpensive, and scalable membrane with covalently immobilized chlorine, large surface area, and fast wetting that exhibits long-lasting, exceptional killing efficacy against a broad spectrum of bacteria and viruses is reported. The membrane achieves a more than 6 log reduction within several minutes against all five bacterial strains tested, including gram-positive, gram-negative, and drug-resistant ones as well as a clinical bacterial cocktail. The membrane also efficiently deactivated nonenveloped and enveloped viruses in minutes. In particular, a 5.17 log reduction is achieved against SARS-CoV-2 after only 10 min of contact with the membrane. This membrane may be used on high-touch surfaces in healthcare and other public facilities or in air filters and personal protective equipment to provide continuous protection and minimize transmission risks.
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Affiliation(s)
- Qingsheng Liu
- Department of Biological and Environmental EngineeringCornell UniversityIthacaNY14853USA
| | - Yidan Zhang
- Department of Fiber Science and Apparel DesignCornell UniversityIthacaNY14853USA
- Halomine Inc.IthacaNY14853USA
| | - Wanjun Liu
- Department of Biological and Environmental EngineeringCornell UniversityIthacaNY14853USA
| | - Long‐Hai Wang
- Department of Biological and Environmental EngineeringCornell UniversityIthacaNY14853USA
| | | | | | - Stephanie Fuchs
- Department of Biological and Environmental EngineeringCornell UniversityIthacaNY14853USA
| | - Kaavian Shariati
- Department of Biological and Environmental EngineeringCornell UniversityIthacaNY14853USA
| | | | - Victorien Bernat
- Department of Materials Science and EngineeringCornell UniversityIthacaNY14853USA
| | - Minglin Ma
- Department of Biological and Environmental EngineeringCornell UniversityIthacaNY14853USA
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8
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Sharma S, Jaiswal AK, Duffy B, Jaiswal S. Food Contact Surfaces: Challenges, Legislation and Solutions. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2021.1929299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Shubham Sharma
- School of Food Science and Environmental Health, College of Sciences and Health, Technological University Dublin, Dublin, Ireland
- Environmental Sustainability and Health Institute, Technological University Dublin, Dublin, Ireland
- Centre for Research in Engineering and Surface Technology (CREST), FOCAS Institute, Technological University Dublin, Dublin, Ireland
| | - Amit K. Jaiswal
- School of Food Science and Environmental Health, College of Sciences and Health, Technological University Dublin, Dublin, Ireland
- Environmental Sustainability and Health Institute, Technological University Dublin, Dublin, Ireland
| | - Brendan Duffy
- Centre for Research in Engineering and Surface Technology (CREST), FOCAS Institute, Technological University Dublin, Dublin, Ireland
| | - Swarna Jaiswal
- School of Food Science and Environmental Health, College of Sciences and Health, Technological University Dublin, Dublin, Ireland
- Environmental Sustainability and Health Institute, Technological University Dublin, Dublin, Ireland
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9
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Antibacterial Thermoplastic Polyurethane/PL-DOSS Composite Films. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2578-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Cheng CH, Liu HC, Lin JC. Surface Modification of Polyurethane Membrane with Various Hydrophilic Monomers and N-Halamine: Surface Characterization and Antimicrobial Properties Evaluation. Polymers (Basel) 2021; 13:2321. [PMID: 34301078 PMCID: PMC8309468 DOI: 10.3390/polym13142321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/10/2021] [Accepted: 07/12/2021] [Indexed: 11/16/2022] Open
Abstract
Reducing microbial infections associated with biomedical devices or articles/furniture noted in a hospital or outpatient clinic remains a great challenge to researchers. Due to its stability and low toxicity, the N-halamine compound has been proposed as a potential antimicrobial agent. It can be incorporated into or blended with the FDA-approved biomaterials. Surface grafting or coating of N-halamine was also reported. Nevertheless, the hydrophobic nature associated with its chemical configuration may affect the microbial interactions with the chlorinated N-halamine-containing substrate. In this study, a polymerizable N-halamine compound was synthesized and grafted onto a polyurethane surface via a surface-initiated atom transfer radical polymerization (SI-ATRP) scheme. Further, using the sequential SI-ATRP reaction method, different hydrophilic monomers, namely poly (ethylene glycol) methacrylate (PEGMA), hydroxyethyl methacrylate (HEMA), and [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide (SBMA), were also grafted onto the polyurethane (PU) substrate before the N-halamine grafting reaction to change the surface properties of the N-halamine-modified substrate. It was noted that the chains containing the hydrophilic monomer and the polymerizable N-halamine compound were successfully grafted onto the PU substrate. The degree of chlorination was improved with the introduction of a hydrophilic monomer, except the HEMA. All of these hydrophilic monomer-containing N-halamine-modified PU substrates demonstrated a more than 2 log CFU reduction after microbial incubation. In contrast, the surface modified with N-halamine only exhibited significantly less antimicrobial efficacy instead. This is likely due to the synergistic effects caused by the reduced chlorine content, as well as the reduced surface interactions with the microbes.
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Affiliation(s)
- Chi-Hui Cheng
- Department of Pediatrics, College of Medicine, Chang Gung University, aoyuan 33305, Taiwan;
- Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
| | - Han-Cheng Liu
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan;
| | - Jui-Che Lin
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan;
- Institute of Oral Medicine, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
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11
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Yi J, Huang K, Ma Y, Sun G, Young GM, Nitin N. Antimicrobial N-Halamine incorporated Poly(Vinyl alcohol-co-ethylene) films for reducing cross-contamination of fresh produce. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.107880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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12
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Abstract
Pathogenic microbial contamination poses serious threats to human healthcare and economies worldwide, which instigates the booming development of challenging antibacterial materials. N-halamine fibrous materials (NFMs), as an important part of antibacterial materials, featuring structural continuity, good pore connectivity, rapid sterilization, rechargeable bactericidal activity, and safety to humans and environment, have received significant research attention. This review aims to present a systematic discussion of the recent advances in N-halamine antibacterial fibrous materials. We firstly introduce the chemical structures and properties of N-halamine materials. Subsequently, the developed NFMs can be categorized based on their fabrication strategies, including surface modification and one-step spinning. Then some representative applications of these fibrous materials are highlighted. Finally, challenges and future research directions of the materials are discussed in the hope of giving suggestions for the following studies. The chemical structures and properties of N-halamine materials are briefly introduced. Design and fabrication strategies of N-halamine fibrous materials are systematically reviewed. The functional applications of the N-halamine fibrous materials are discussed. Challenges and future research directions of the antibacterial N-halamine fibrous materials are provided.
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13
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Wang C, Mu C, Lin W, Xiao H. Functional-modified polyurethanes for rendering surfaces antimicrobial: An overview. Adv Colloid Interface Sci 2020; 283:102235. [PMID: 32858408 DOI: 10.1016/j.cis.2020.102235] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/04/2020] [Accepted: 08/06/2020] [Indexed: 02/07/2023]
Abstract
Antimicrobial surfaces and coatings are rapidly emerging as primary components in functional modification of materials and play an important role in addressing the problems associated with biofouling and microbial infection. Polyurethane (PU) consisting of alternating soft and hard segments has been one of the most important coating materials that have been widely applied in many fields due to its versatile properties. This review attempts to provide insight into the recent advances in antimicrobial polyurethane coatings or surfaces. According to different classes of antimicrobial components along with their antimicrobial mechanism, the synthesis pathways are presented systematically herein to afford polyurethane with antimicrobial properties. Also, the challenges and opportunities of antimicrobial PU coatings and surfaces are also discussed. This review will be beneficial to the exploitation and the further studies of antimicrobial polyurethane materials for a variety of applications.
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14
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Anchoring N-Halo (sodium dichloroisocyanurate) on the nano-Fe3O4 surface as “chlorine reservoir”: Antibacterial properties and wastewater treatment. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.04.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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15
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Zuo M, Pan N, Liu Q, Ren X, Liu Y, Huang TS. Three-dimensionally printed polylactic acid/cellulose acetate scaffolds with antimicrobial effect. RSC Adv 2020; 10:2952-2958. [PMID: 35496135 PMCID: PMC9048423 DOI: 10.1039/c9ra08916k] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 12/19/2019] [Indexed: 01/03/2023] Open
Abstract
This study aimed to develop novel, biodegradable, antiseptic-loaded and low-cost scaffolds using a direct ink writing (DIW) technique for antibacterial applications. Polylactic acid/cellulose acetate (PLA/CA) mixtures with different composition ratios were prepared, and the effect of CA content on the rheological behaviors of the inks was investigated. The printability of the prepared DIW inks was improved with the addition of the appropriate amount of CA, since the formation of hydrogen bonding 3D network between PLA and CA. As a result, a liquid form ink consisting of majority of PLA and minority of CA which was prepared and printed for the first time through DIW technique. Afterwards, the antimicrobial agent, 1-chloro-2,2,5,5-tetramethyl-4-imidazolidinone (MC) was incorporated into the inks for preventing bacterial infections, which showed excellent stability and effective antibacterial activity against S. aureus and E. coli O157:H7 in a short time. Owning the ease of fabrication and the biocidal property, our 3D printed scaffolds will have a wide range of potential applications in the field of food packaging, communal facilities, medical equipments, and biomedical materials. The three-dimensional and antiseptic-loaded scaffold possessed a high biocidal efficacy.![]()
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Affiliation(s)
- Mengdi Zuo
- Key Laboratory of Eco-textiles of Ministry of Education
- School of Textiles and Clothing
- Jiangnan University
- Wuxi
- China
| | - Nengyu Pan
- Key Laboratory of Eco-textiles of Ministry of Education
- School of Textiles and Clothing
- Jiangnan University
- Wuxi
- China
| | - Quanjing Liu
- Key Laboratory of Advanced Food Manufacturing Equipment and Technology
- School of Mechanical Engineering
- Jiangnan University
- Wuxi
- China
| | - Xuehong Ren
- Key Laboratory of Eco-textiles of Ministry of Education
- School of Textiles and Clothing
- Jiangnan University
- Wuxi
- China
| | - Yu Liu
- Key Laboratory of Advanced Food Manufacturing Equipment and Technology
- School of Mechanical Engineering
- Jiangnan University
- Wuxi
- China
| | - Tung-Shi Huang
- Department of Poultry Science
- Auburn University
- Auburn 36849
- USA
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16
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Sadhasivam G, Gelber C, Zakin V, Margel S, Shapiro OH. N-Halamine Derivatized Nanoparticles with Selective Cyanocidal Activity: Potential for Targeted Elimination of Harmful Cyanobacterial Blooms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:9160-9170. [PMID: 31328506 DOI: 10.1021/acs.est.9b01368] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Harmful cyanobacterial blooms (HCBs) are becoming a major challenge for the management of both natural and man-made freshwater lakes and reservoirs. Phytoplankton communities are an essential component of aquatic ecosystems, providing the basis for natural food webs as well as important environmental services. HCBs, driven by a combination of environmental pollution and rising global temperatures, destabilize phytoplankton communities with major impacts on aquatic ecology and trophic interactions. Application of currently available algaecides generally results in unselective elimination of phytoplankton species, disrupting water ecology and environmental services provided by beneficial algae. There is thus a need for selective cyanocidal compounds that can eliminate cyanobacteria while preserving algal members of the phytoplankton community. Here, we demonstrate the efficacy of N-halamine derivatized nanoparticles (Cl NPs) in selectively eliminating cyanobacteria, including the universal bloom-forming species Microcystis aeruginosa, while having minimal effect on co-occurring algal species. We further support these results with the use a simple microfluidic platform in combination with advanced live-imaging microscopy to study the effects of Cl NPs on both laboratory cultures and natural populations of cyanobacteria and algae at single cell resolutions. We note that the Cl NPs used in this work were made of polymethacrylamide, a nonbiodegradable polymer that may be unsuitable for use as a cyanocide in open aquatic environments. Nevertheless, the demonstrated selective action of these Cl NPs suggests a potential for developing alternative, biodegradable carriers with similar properties as future cyanocidal agents that will enable selective elimination of HCBs.
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Affiliation(s)
- Giji Sadhasivam
- Department of Food Science, Institute of Postharvest and Food Sciences , Agricultural Research Organization, The Volcani Center , Rishon LeZion 7528809 , Israel
| | - Chen Gelber
- Department of Chemistry, The Institute of Nanotechnology and Advanced Materials , Bar-Ilan University , Ramat-Gan 52900 , Israel
| | - Varda Zakin
- Department of Food Science, Institute of Postharvest and Food Sciences , Agricultural Research Organization, The Volcani Center , Rishon LeZion 7528809 , Israel
| | - Shlomo Margel
- Department of Chemistry, The Institute of Nanotechnology and Advanced Materials , Bar-Ilan University , Ramat-Gan 52900 , Israel
| | - Orr H Shapiro
- Department of Food Science, Institute of Postharvest and Food Sciences , Agricultural Research Organization, The Volcani Center , Rishon LeZion 7528809 , Israel
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Huang K, Nitin N. Antimicrobial Particle-Based Novel Sanitizer for Enhanced Decontamination of Fresh Produce. Appl Environ Microbiol 2019; 85:e02599-18. [PMID: 30770406 PMCID: PMC6450019 DOI: 10.1128/aem.02599-18] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 02/09/2019] [Indexed: 11/20/2022] Open
Abstract
Microbial food safety of raw or minimally processed fresh produce is a significant challenge. The current sanitation processes are effective for inactivation of bacteria in wash water but have limited efficacy (<2 log/g reduction) for inactivation of microbes on the surfaces of fresh produce. This study demonstrates a novel concept to enhance effectiveness of chlorine using a particle-based sanitizer to improve decontamination of fresh produce. In this concept, enhanced effectiveness is achieved by localized high concentration of chlorine bound to the surfaces of silica particles and improved surface contact of microparticles with the produce surface using mechanical shear during a washing process. The results of this study demonstrate that 500 ppm active chlorine can be bound to the surfaces of modified silica particles. These modified particles maintain over 90% of their initial chlorine content during extended storage in aqueous solution and provide improved inactivation of both Escherichia coli O157:H7, Listeria innocua, and Pseudomonas fluorescens in the presence of organic content in contrast to conventional chlorine sanitizer. The modified particles exhibit effective sanitation of fresh produce (>5-log reduction) in the presence of relatively high organic content (chemical oxygen demand of 500 mg/liter), demonstrating a potential to address a significant unmet need to improve fresh produce sanitation. The particle-based sanitizer had no significant effect on the quality of fresh lettuce.IMPORTANCE The limitation of current sanitation processes for inactivation of microbes on the surfaces of fresh produce is due to nonspecific consumption of sanitizers by reactions with the food matrix and complexity of surface chemistries and structural features of produce surfaces. This study demonstrates a novel approach to enhance sanitation effectiveness of fresh produce using a particle-based sanitizer. The particle-based sanitizer concept provides localized high concentration delivery of chlorine to the surfaces of fresh produce and enables more than 5 logs of inactivation of inoculated bacteria on fresh produce surfaces without significant changes in produce quality. The results of this study illustrate the potential of this approach to address the unmet need for improving sanitation of fresh produce. Further validation of this approach using a scaled-up produce washing system will enable commercialization of this novel concept.
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Affiliation(s)
- Kang Huang
- Department of Food Science and Technology, University of California-Davis, Davis, California, USA
| | - Nitin Nitin
- Department of Food Science and Technology, University of California-Davis, Davis, California, USA
- Department of Biological and Agricultural Engineering, University of California-Davis, Davis, California, USA
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18
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Yong Y, Qiao M, Chiu A, Fuchs S, Liu Q, Pardo Y, Worobo R, Liu Z, Ma M. Conformal Hydrogel Coatings on Catheters To Reduce Biofouling. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1927-1934. [PMID: 30441901 DOI: 10.1021/acs.langmuir.8b03074] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Reducing biofouling while increasing lubricity of inserted medical catheters is highly desirable to improve their comfort, safety, and long-term use. We report here a simple method to create thin (∼30 μm) conformal lubricating hydrogel coatings on catheters. The key to this method is a three-step process including shape-forming, gradient cross-linking, and swell-peeling (we label this method as SGS). First, we took advantage of the fast gelation of agar to form a hydrogel layer conformal to catheters; then, we performed a surface-bound UV cross-linking of acrylamide mixed in agar in open air, purposely allowing gradual oxygen inhibition of free radicals to generate a gradient of cross-linking density across the hydrogel layer; and finally, we caused the hydrogel to swell to let the non-cross-linked/loosely attached hydrogel fall off, leaving behind a surface-bound, thin, and mostly uniform hydrogel coating. This method also allowed easy incorporation of different polymerizable monomers to obtain multifunctionality. For example, incorporating an antifouling, zwitterionic moiety sulfobetaine in the hydrogel reduced both in vitro protein adsorption and in vivo foreign-body response in mice. The addition of a biocidal N-halamine monomer to the hydrogel coating deactivated both Staphylococcus aureus ( S. aureus) and Escherichia coli ( E. coli) O157:H7 within 30 min of contact and reduced biofilm formation by 90% compared to those of uncoated commercial catheters when challenged with S. aureus for 3 days. The lubricating, antibiofouling hydrogel coating may bring clinical benefits in the use of urinary and venous catheters as well as other types of medical devices.
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Affiliation(s)
- You Yong
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14850 , United States
- Key Lab of Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Mingyu Qiao
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14850 , United States
| | - Alan Chiu
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14850 , United States
| | - Stephanie Fuchs
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14850 , United States
| | - Qingsheng Liu
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14850 , United States
| | - Yehudah Pardo
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14850 , United States
| | - Randy Worobo
- Department of Food Science , Cornell University , Ithaca , New York 14850 , United States
| | - Zheng Liu
- Key Lab of Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Minglin Ma
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14850 , United States
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Rai RK, Jayakrishnan A. Development of new hydantoin-based biocidal polymers with improved rechargeability and anti-microbial activity. NEW J CHEM 2019. [DOI: 10.1039/c8nj06015k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Novel hydantoin based co-polymers containing both amide and imide positions for halogen capture with improved rechargeability and antibacterial activity were developed.
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Affiliation(s)
- Rajani Kant Rai
- Department of Biotechnology
- Bhupat and Jyothi Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600 036
- India
| | - A. Jayakrishnan
- Department of Biotechnology
- Bhupat and Jyothi Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600 036
- India
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20
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Qiao M, Liu Q, Yong Y, Pardo Y, Worobo R, Liu Z, Jiang S, Ma M. Scalable and Rechargeable Antimicrobial Coating for Food Safety Applications. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11441-11450. [PMID: 30296071 DOI: 10.1021/acs.jafc.8b03864] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Environmental surfaces are common avenues for microbial contamination and transmission in food-processing establishments. We recently synthesized a polymer that combines both N-halamine and dopamine functional groups to form a novel antimicrobial coating material. A series of chemical (titration) and biological ("sandwich" and anti-inhabitation) tests were designed to prove the stability and functionality of as-developed coating material. Halamine-dopamine polymer-coated stainless-steel surface inactivated 6 log10 CFU of both Staphylococcus aureus and Escherichia coli O157:H7 under experimental detection limit within 10 min of contact time. After three "discharge-recharge" cycles, the surface maintained the same antimicrobial effectiveness; 60% of the surface chlorine remained after 10 "discharge-recharge" cycles. In addition, the coating thickness and chlorine content could be further tuned through adjusting the formulation of the coating. We also demonstrated that this coating material could be easily scaled up to apply on real food equipment parts through a spray-coating method. Thus our polymer material has great potential to produce a high-performance, low-cost, and easy-to-apply coating on food-associated environmental surfaces for food safety preventive-control applications.
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Affiliation(s)
- Mingyu Qiao
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14853 , United States
| | - Qingsheng Liu
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14853 , United States
| | - You Yong
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14853 , United States
- Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Yudi Pardo
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14853 , United States
| | - Randy Worobo
- Department of Food Science , Cornell University , Ithaca , New York 14853 , United States
| | - Zheng Liu
- Department of Chemical Engineering , Tsinghua University , Beijing 100084 , China
| | - Shan Jiang
- Department of Materials Science and Engineering , Iowa State University of Science and Technology , Ames , Iowa 50011 , United States
| | - Minglin Ma
- Department of Biological and Environmental Engineering , Cornell University , Ithaca , New York 14853 , United States
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Pan N, Liu Y, Ren X, Huang TS. Fabrication of cotton fabrics through in-situ reduction of polymeric N-halamine modified graphene oxide with enhanced ultraviolet-blocking, self-cleaning, and highly efficient, and monitorable antibacterial properties. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.07.056] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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22
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Biodegradable polyhydroxybutyrate/poly-ε-caprolactone fibrous membranes modified by silica composite hydrol for super hydrophobic and outstanding antibacterial application. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.02.031] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Ren T, Hayden M, Qiao M, Huang TS, Ren X, Weese J. Absorbent Pads Containing N-Halamine Compound for Potential Antimicrobial Use for Chicken Breast and Ground Chicken. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1941-1948. [PMID: 29397709 DOI: 10.1021/acs.jafc.7b05191] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
N-Halamines are a group of compounds containing one or more nitrogen-halogen covalent bond(s), and the high-energy halide bond provides a strong oxidative state so that it is able to inactivate microorganisms effectively. In this study, the shelf life of chicken breast and ground chicken packed with 1-chloro-2,2,5,5-tetramethyl-4-imidazolidinone (MC, a member oft the N-halamines) treated absorbent pads was investigated during refrigerated storage. Fresh, processed chicken meat in packaging trays loaded with or without MC treated absorbent pads were stored at 4 °C for 11 days. The microbial counts in chicken meat as well as in the food pads were analyzed on days 1, 4, 7, and 11. MC treated pads reduced the levels of the main spoilage-related microorganisms (aerobic plate counts, lactic acid bacteria, Enterobacteriaceae, psychrotrophs, and Pseudomonas spp.) present in the absorbent pads by an average of 3.5 log CFU/g compared to the control. Microbial loads in chicken breast packed with MC coated absorbent pads were 0.3 log CFU/g lower than those in the control, and an approximate 0.2 log CFU/g reduction was observed for ground chicken. Neither the color nor the pH of the meat was negatively impacted by the presence of MC. The populations of inoculated Salmonella and Campylobacter in meat loaded with MC treated absorbent pads were on average lower than those in the controls. Pathogens in the control pads increased to 3.7 and 4.9 log CFU/g, while the MC treated absorbent pads lowered these two bacteria to under the detection limit (l.7 log CFU/g) throughout 11 days of storage.
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Affiliation(s)
- Tian Ren
- Department of Poultry Science, Auburn University , Auburn, Alabama 36849, United States
| | - Mitchelle Hayden
- Department of Poultry Science, Auburn University , Auburn, Alabama 36849, United States
| | - Mingyu Qiao
- Department of Poultry Science, Auburn University , Auburn, Alabama 36849, United States
| | - Tung-Shi Huang
- Department of Poultry Science, Auburn University , Auburn, Alabama 36849, United States
| | - Xuehong Ren
- Key Laboratory of Eco-Textiles of Ministry of Education, College of Textiles and Clothing, Jiangnan University , Wuxi, Jiangsu 214122, China
| | - Jean Weese
- Department of Poultry Science, Auburn University , Auburn, Alabama 36849, United States
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N-Halamine Biocidal Materials with Superior Antimicrobial Efficacies for Wound Dressings. Molecules 2017; 22:molecules22101582. [PMID: 28934124 PMCID: PMC6151735 DOI: 10.3390/molecules22101582] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/18/2017] [Accepted: 09/20/2017] [Indexed: 01/22/2023] Open
Abstract
This work demonstrated the successful application of N-halamine technology for wound dressings rendered antimicrobial by facile and inexpensive processes. Four N-halamine compounds, which possess different functional groups and chemistry, were synthesized. The N-halamine compounds, which contained oxidative chlorine, the source of antimicrobial activity, were impregnated into or coated onto standard non-antimicrobial wound dressings. N-halamine-employed wound dressings inactivated about 6 to 7 logs of Staphylococcus aureus and Pseudomonas aeruginosa bacteria in brief periods of contact time. Moreover, the N-halamine-modified wound dressings showed superior antimicrobial efficacies when compared to commercially available silver wound dressings. Zone of inhibition tests revealed that there was no significant leaching of the oxidative chlorine from the materials, and inactivation of bacteria occurred by direct contact. Shelf life stability tests showed that the dressings were stable to loss of oxidative chlorine when they were stored for 6 months in dark environmental conditions. They also remained stable under florescent lighting for up to 2 months of storage. They could be stored in opaque packaging to improve their shelf life stabilities. In vitro skin irritation testing was performed using a three-dimensional human reconstructed tissue model (EpiDerm™). No potential skin irritation was observed. In vitro cytocompatibility was also evaluated. These results indicate that N-halamine wound dressings potentially can be employed to prevent infections, while at the same time improving the healing process by eliminating undesired bacterial growth.
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Synthesis, characterization and chlorination of 2-acrylamido-2-methylpropane sulfonic acid sodium salt-based antibacterial hydrogels. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.04.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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