Durable and chlorine rechargeable biocidal composite material for improved food safety

Ma, Yue; Ramos, Thais Melo; Amador, Lucinda; Nitin, Nitin; Sun, Gang

doi:10.1007/s10570-020-03520-z

Cited by 8 publications

(9 citation statements)

References 30 publications

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“…The distinguishing feature of N -halamines is that their antimicrobial activity can be easily recovered by treating with household bleach after consumption. Therefore, N -halamines can be incorporated into commercial paints, food products, or antimicrobial textiles for a better public health environment. − …”

Section: Introductionmentioning

confidence: 99%

Rapid Biocidal Activity of N-Halamine-Functionalized Polydopamine and Polyethylene Imine Coatings

2021

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Microorganisms easily adhere to the surface of substrates and further form biofilms, which present problems in various fields. Therefore, the development of surfaces with antimicrobial adhesion or viability is a promising approach. In this study, we were committed to develop a rapid sterilizing coating. First, polyester fibers were immersed into a mixing solution of dopamine (PDA) and polyethyleneimine (PEI) for forming the co-deposition of PDA and PEI coatings. After this, the co-deposition of PDA and PEI coatings was immersed in a solution of household bleach for chlorination. We found that the nitrogens of PDA and PEI could be chlorinated repeatedly and that the oxidative chlorine content increased with the increasing PEI concentration upon co-deposition. Next, the efficacy of the co-deposition of chlorinated PDA and PEI coatings in eliminating Staphylococcus aureus and Escherichia coli was investigated. We found that the antibacterial ability of the coatings increased with increasing PEI content. In addition, the chlorinated co-deposition coatings had significantly improved antibacterial properties compared to the unchlorinated ones. The chlorinated co-deposition coatings inactivated >99.99% of S. aureus and >99.9% of E. coli after contact of less than 10 min. Therefore, chlorination of a PDA/PEI co-deposition surface is a feasible method for use in antibacterial coatings.

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Section: Introductionmentioning

confidence: 99%

Rapid Biocidal Activity of N-Halamine-Functionalized Polydopamine and Polyethylene Imine Coatings

2021

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“…Subsequently, the free chlorine attached to the chlorinated membrane was washed off with an excess of DI water. The active chlorine contents covalently bonded to the membrane were quantitatively measured by an iodometric titration method and were calculated according to the equation , V 0 and V 1 (L) are the volumes of the iodine solution consumed in the titration process without and with the existence of the chlorinated membrane, respectively. m (g) is the dry weight of the chlorinated membrane.…”

Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of Vaphmentioning

confidence: 99%

“…For example, amine halamine could be the best option for constructing biocidal food packaging materials, which usually require a long-term antimicrobial effect to reduce microbial cross-contaminations and prolong the lifetime of foods. 20,25,26 However, for water disinfection applications, both fast inactivation against pathogens and longterm stability are needed to ensure a high water permeation flux and a desirable disinfection efficiency. 16 Therefore, a combination of imide/amide or imide/amine halamines seems to be the optimal solution regarding water disinfection applications.…”

Section: Introductionmentioning

confidence: 99%

“…Significant research efforts on applying N -halamine structures in water treatments have been reported due to their robust chlorine rechargeable biocidal activity against a broad spectrum of waterborne pathogens. − There are three types of halamine structures: imide-, amide-, and amine-halamines, which possess varied active chlorine stabilities in water, following an order of imide- < amide- < amine-halamines, while their biocidal efficiency shows an inverse trend of imide- > amide- > amine-halamines. , An appropriate halamine structure should be selected depending on different applications. For example, amine halamine could be the best option for constructing biocidal food packaging materials, which usually require a long-term antimicrobial effect to reduce microbial cross-contaminations and prolong the lifetime of foods. ,, However, for water disinfection applications, both fast inactivation against pathogens and long-term stability are needed to ensure a high water permeation flux and a desirable disinfection efficiency . Therefore, a combination of imide/amide or imide/amine halamines seems to be the optimal solution regarding water disinfection applications.…”

Section: Introductionmentioning

confidence: 99%

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A Novel N-Halamine Biocidal Nanofibrous Membrane for Chlorine Rechargeable Rapid Water Disinfection Applications

Wisuthiphaet

Nitin

et al. 2021

ACS Appl. Mater. Interfaces

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Disinfecting pathogenic contaminated water rapidly and effectively on sites is one of the critical challenges at point-ofuse (POU) situations. Currently available technologies are still suffering from irreversible depletion of disinfectants, generation of toxic by-products, and potential biofouling problems. Herein, we developed a chlorine rechargeable biocidal nanofibrous membrane, poly(acrylonitrile-co-5-methyl-5-(4′-vinylphenyl)imidazolidine-2,4dione) (P(AN-VAPH)), via a combination of a free radical copolymerization reaction and electrospun technology. The copolymer exhibits good electrospinnability and desirable mechanical properties. Also, the 5-methyl-5-(4′-vinylphenyl)imidazolidine-2,4-dione (VAPH) moieties containing unique hydantoin structures are able to be chlorinated and converted to halamine structures, enabling the P(AN-VAPH) nanofibrous membrane with rapid and durable biocidal activity. The chlorinated P(AN-VAPH) nanofibrous membranes showed intriguing features of unique 3D morphological structures with large specific surface area, good mechanical performance, rechargeable chlorination capacity (>5000 ppm), long-term durability, and desirable biocidal activity against both bacteria and viruses (>99.9999% within 2 min of contact). With these attributes, the chlorinated P(AN-VAPH) membranes demonstrated promising disinfecting efficiency against concentrated bacteria-contaminated water during direct filtration applications with superior killing capacity and high flowing flux (5000 L m −2 h −1 ).

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The in-situ synthesis of porous halamine nanodots inside a bacterial cellulose nanofibrous hydrogel with robust chlorine rechargeable biocidal function

Ma,

Li,

Zhang

et al. 2023

Cellulose

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Durable and chlorine rechargeable biocidal composite material for improved food safety

Cited by 8 publications

References 30 publications

Rapid Biocidal Activity of N-Halamine-Functionalized Polydopamine and Polyethylene Imine Coatings

Rapid Biocidal Activity of N-Halamine-Functionalized Polydopamine and Polyethylene Imine Coatings

A Novel N-Halamine Biocidal Nanofibrous Membrane for Chlorine Rechargeable Rapid Water Disinfection Applications

The in-situ synthesis of porous halamine nanodots inside a bacterial cellulose nanofibrous hydrogel with robust chlorine rechargeable biocidal function

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