One-Step Synthesis of Silver Nanoparticles on Polydopamine-Coated Sericin/Polyvinyl Alcohol Composite Films for Potential Antimicrobial Applications

Cai, Rui; Tao, Gang; He, Huawei; Song, Kai; Zuo, Hua; Jiang, Wenchao; Wang, Yejing

doi:10.3390/molecules22050721

Cited by 58 publications

(34 citation statements)

References 68 publications

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“…The PDA composites, particularly those decorated with metal oxides, have been used for cancer therapy and antibacterial treatments. These composites include PDA@SiO 2 [30], Fe 3 O 4 @PDA [31], GO@PDA@GNS [32], AuNPs@PDA [33], WO 3 @PDA-HA [34], Mn 3 O 4 @PDA [35], Ag@PDA/graphene oxide sheet [36], PDA@Ag [37], MoS 2 -PDA-Ag composite [38], Ag-PDA-TiO 2 composite [39], and PDA-coated sericin/polyvinyl alcohol [40]. Nevertheless, the preparation of such polymer-metal/metal oxide composites requires long synthesis time and expensive or toxic materials.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Activity against Methicillin-Resistant Staphylococcus aureus of Colloidal Polydopamine Prepared by Carbon Dot Stimulated Polymerization of Dopamine

et al. 2019

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A simple one-step process for the polymerization of dopamine has been developed using nitrogen-doped carbon dots (N@C–dots) as the sole initiator. The synthesized amorphous polydopamine (PDA)-doped N@C–dots (PDA–N@C–dots composite) exhibited a negative charge of –39 mV with particle sizes ranging from 200 to 1700 nm. The stable colloidal solution was active against methicillin-resistant Staphylococcus aureus (MRSA), a Gram-negative bacterium. The strong adhesion of the polymer to the bacterial membrane resulted in a limited diffusion of nutrients and wastes in and out of the cell cytosol, which is a generic mechanism to trigger cell death. Another possible route is the autoxidation of the catechol moiety of PDA to form quinone and release reactive oxygen species (ROS) such as superoxide radicle and hydrogen peroxide, two well-known ROS with antimicrobial properties against both Gram-negative and Gram-positive bacteria.

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Section: Introductionmentioning

confidence: 99%

Antibacterial Activity against Methicillin-Resistant Staphylococcus aureus of Colloidal Polydopamine Prepared by Carbon Dot Stimulated Polymerization of Dopamine

et al. 2019

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“…The antimicrobial activity of AgNPs–silk/PVA film against E. coli and S. aureus was evaluated by an inhibition zone assay as a previous report [ 48 ]. About 100 μL of bacterial suspension (1 × 10 8 CFU/mL) was spread on LB agar plate, then the circular film with a diameter of 1 cm was placed on the surface of agar plate.…”

Section: Methodsmentioning

confidence: 99%

Biosynthesis and Characterization of AgNPs–Silk/PVA Film for Potential Packaging Application

et al. 2017

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Bionanocomposite packaging materials have a bright future for a broad range of applications in the food and biomedical industries. Antimicrobial packaging is one of the bionanocomposite packaging materials. Silver nanoparticle (AgNP) is one of the most attractive antimicrobial agents for its broad spectrum of antimicrobial activity against microorganisms. However, the traditional method of preparing AgNPs-functionalized packaging material is cumbersome and not environmentally friendly. To develop an efficient and convenient biosynthesis method to prepare AgNPs-modified bionanocomposite material for packaging applications, we synthesized AgNPs in situ in a silk fibroin solution via the reduction of Ag+ by the tyrosine residue of fibroin, and then prepared AgNPs–silk/poly(vinyl alcohol) (PVA) composite film by blending with PVA. AgNPs were synthesized evenly on the surface or embedded in the interior of silk/PVA film. The prepared AgNPs–silk/PVA film exhibited excellent mechanical performance and stability, as well as good antibacterial activity against both Gram-negative and Gram-positive bacteria. AgNPs–silk/PVA film offers more choices to be potentially applied in the active packaging field.

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“…One of the advantages of silk materials is that they can be processed in various ways [29,30]. In addition to the fine particles, studies have been reported proposing to change the shape of the dissolved silk into gels [12], films [31,32], and even sponges [14]. By using these techniques, it is possible to improve the surface of the fiber by making it uneven or hollow.…”

Section: Direct Recovery Of Re Using Silk Powdermentioning

confidence: 99%

Direct Recovery of the Rare Earth Elements Using a Silk Displaying a Metal-Recognizing Peptide

et al. 2020

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Rare earth elements (RE) are indispensable metallic resources in the production of advanced materials; hence, a cost-and energy-effective recovery process is required to meet the rapidly increasing RE demand. Here, we propose an artificial RE recovery approach that uses a functional silk displaying a RE-recognizing peptide. Using the piggyBac system, we constructed a transgenic silkworm in which one or two copies of the gene coding for the RE-recognizing peptide (Lamp1) was fused with that of the fibroin L (FibL) protein. The purified FibL-Lamp1 fusion protein from the transgenic silkworm was able to recognize dysprosium (Dy 3+ ), a RE, under physiological conditions. This method can also be used with silk from which sericin has been removed. Furthermore, the Dy-recovery ability of this silk was significantly improved by crushing the silk. Our simple approach is expected to facilitate the direct recovery of RE from an actual mixed solution of metal ions, such as seawater and industrial wastewater, under mild conditions without additional energy input.

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One-Step Synthesis of Silver Nanoparticles on Polydopamine-Coated Sericin/Polyvinyl Alcohol Composite Films for Potential Antimicrobial Applications

Cited by 58 publications

References 68 publications

Antibacterial Activity against Methicillin-Resistant Staphylococcus aureus of Colloidal Polydopamine Prepared by Carbon Dot Stimulated Polymerization of Dopamine

Antibacterial Activity against Methicillin-Resistant Staphylococcus aureus of Colloidal Polydopamine Prepared by Carbon Dot Stimulated Polymerization of Dopamine

Biosynthesis and Characterization of AgNPs–Silk/PVA Film for Potential Packaging Application

Direct Recovery of the Rare Earth Elements Using a Silk Displaying a Metal-Recognizing Peptide

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