In situ synthesis of multi-functional gelatin/resorcinol/silver nanoparticles composite films

Bang, Yeong‐Ju; Shankar, Shiv; Rhim, Jong‐Whan

doi:10.1016/j.fpsl.2019.100399

Cited by 38 publications

(24 citation statements)

References 43 publications

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“…AgNPs could insert into the network structure of SA to form a denser system, which led to a reduction in WVP values [ 30 ]. Similar results were also observed in a study by Bang et al [ 39 ], where in the WVP value of gelatin the composite film decreased from 1.53 × 10 −9 g/m·s·Pa to 1.47 × 10 −9 g/m·s·Pa due to the addition of AgNPs. It is believed that nanoparticles can reduce the permeability of water vapor by increasing the crystallinity of biopolymers or reducing the free hydrophilic groups in alkyl groups, such as -OH, thereby increasing the diffusion channel of water vapor [ 39 ].…”

Section: Resultssupporting

confidence: 90%

“…Similar results were also observed in a study by Bang et al [ 39 ], where in the WVP value of gelatin the composite film decreased from 1.53 × 10 −9 g/m·s·Pa to 1.47 × 10 −9 g/m·s·Pa due to the addition of AgNPs. It is believed that nanoparticles can reduce the permeability of water vapor by increasing the crystallinity of biopolymers or reducing the free hydrophilic groups in alkyl groups, such as -OH, thereby increasing the diffusion channel of water vapor [ 39 ]. WVP of films ranged from 2.25 × 10 −11 g/m·s·Pa to 0.75 × 10 −11 g/m·s·Pa, which was significantly affected by the different ultrasound treatments, and the lowest WVP value is displayed in 7:3–30 min (0.75 × 10 −11 g/m·s·Pa).…”

Section: Resultssupporting

confidence: 90%

“…Interestingly, the 8:2 film had a hydrophilic surface with a water contact angle of 46.3°, while the 6:4 film showed a hydrophilic surface at 57°. The increase in the water contact angle of the AgNPs incorporated nanocomposite films may be due to the hydrophobicity of metallic silver [ 39 ]. The contact angle shows the hydrophilicity (<90°) and hydrophobicity (>90°).…”

Section: Resultsmentioning

confidence: 99%

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Investigation of Ultrasonic Treatment on Physicochemical, Structural and Morphological Properties of Sodium Alginate/AgNPs/Apple Polyphenol Films and Its Preservation Effect on Strawberry

Lan

Shama

et al. 2020

Polymers

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An antibacterial and anti-oxidation composite film was prepared by a casting method using sodium alginate (SA) and apple polyphenols (APPs) as the base material and glycerol as the plasticizer. Silver nanoparticles (AgNPs) were deposited by ultrasonic-assisted electrospray method. The degree of influence of the addition ratio of SA and AgNPs and different ultrasonic time on the mechanical properties, barrier properties, optical properties, and hydrophilicity of the composite film was explored. The composite films were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that the SA: AgNPs ratio of 7:3 and the ultrasonic time for 30 min have the best comprehensive performance, and SA/AgNPs/APP films showed the lowest water vapor permeability value of 0.75 × 10−11 g/m·s·Pa. The composite film has good strength and softness, with tensile strength (TS) and elongation at break (E) at 23.94 MPa and 29.18%, respectively. SEM images showed that the surface of the composite film was smooth and the AgNPs’ distribution was uniform. The composite film showed broad antibacterial activity, and the antibacterial activity of Escherichia coli (92.01%) was higher than that of Staphylococcus aureus (91.26%). However, due to the addition of APP, its antioxidant activity can reach 98.39%, which has a synergistic effect on antibacterial activity. For strawberry as a model, the results showed that this composite film can prolong the shelf life of strawberries for about 8 days at 4 °C, effectively maintaining their storage quality. Compared with the commonly used PE(Polyethylene film) film on the market, it has a greater fresh-keeping effect and can be used as an active food packaging material.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of Ultrasonic Treatment on Physicochemical, Structural and Morphological Properties of Sodium Alginate/AgNPs/Apple Polyphenol Films and Its Preservation Effect on Strawberry

Lan

Shama

et al. 2020

Polymers

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“…Recently, a large amount of research has been conducted regarding the incorporation of silver ions and nanoparticles (NPs) as AMAs into coatings for food contact surfaces and food packaging materials (Bahrami et al., 2019; Bang et al., 2019; Ferreira et al., 2019; Kim et al., 2019; Lee et al., 2019; Lin et al., 2014; Martinez‐Abad et al., 2012; Menezes et al., 2019; Nthunya et al., 2017; Wang, Wang, et al., 2015; Zhan et al., 2020). Silver ions are naturally present in humans and typically found at blood levels below 2.3 µg/L (Wan et al., 1991).…”

Section: Release‐based Antimicrobial Coatingsmentioning

confidence: 99%

Recent developments in antimicrobial and antifouling coatings to reduce or prevent contamination and cross‐contamination of food contact surfaces by bacteria

DeFlorio

Liu

White

et al. 2021

Comp Rev Food Sci Food Safe

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Illness as the result of ingesting bacterially contaminated foodstuffs represents a significant annual loss of human quality of life and economic impact globally. Significant research investment has recently been made in developing new materials that can be used to construct food contacting tools and surfaces that might minimize the risk of cross‐contamination of bacteria from one food item to another. This is done to mitigate the spread of bacterial contamination and resultant foodborne illness. Internet‐based literature search tools such as Web of Science, Google Scholar, and Scopus were utilized to investigate publishing trends within the last 10 years related to the development of antimicrobial and antifouling surfaces with potential use in food processing applications. Technologies investigated were categorized into four major groups: antimicrobial agent–releasing coatings, contact‐based antimicrobial coatings, superhydrophobic antifouling coatings, and repulsion‐based antifouling coatings. The advantages for each group and technical challenges remaining before wide‐scale implementation were compared. A diverse array of emerging antimicrobial and antifouling technologies were identified, designed to suit a wide range of food contact applications. Although each poses distinct and promising advantages, significant further research investment will likely be required to reliably produce effective materials economically and safely enough to equip large‐scale operations such as farms, food processing facilities, and kitchens.

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“…In its compound form, it appears as a white crystalline compound with a weak odor and a bittersweet taste. (44) The reaction of resorcinol with 2-pyridylazo led to the synthesis of PAR for the first time in 1959. (45) Since then, PAR has been widely used as a chromogenic reagent for the detection of mainly metal ions.…”

Section: Introductionmentioning

confidence: 99%

Label-free Binding Analysis of 4-(2-Pyridylazo)-resorcinol-based Composite Layer with Cobalt Ion Using Surface Plasmon Resonance Optical Sensor

Saleviter¹,

Fen²,

Omar³

et al. 2020

Sensors and Materials

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Label-free measurements of small-molecule binding interactions are of high interest to researchers across multiple scientific disciplines. Label-free optical sensors based on surface plasmon resonance (SPR) have been widely used for detecting various targets including toxic heavy metals in solutions. In this research, an SPR optical sensor enhanced with a 4-(2-pyridylazo)-resorcinol (PAR)-based composite layer was employed for the detection of the cobalt ion (Co 2+). A binding analysis study was conducted by monitoring the interaction between Co 2+ and the sensing layer thin film. In our experiment, there were no changes in SPR angle for a gold layer in contact with Co 2+ of different concentrations, whereas the enhanced SPR sensor produced a maximum SPR angle shift of 0.328°. From the relationship between the angle shift and the concentration of Co 2+ , the sensor had a sensitivity of 0.2375° ppm −1 for concentrations of less than 1 ppm, 0.0044° ppm −1 for concentrations of 1 to 10 ppm, and 0.00069° ppm −1 for concentrations from 10 to 100 ppm. Further analysis was also carried out by calculating the full width at half maximum (FWHM), detection accuracy (DA), and signal-tonoise ratio (SNR). In the binding analysis, the experimental results were fitted with Langmuir, Freundlich, and Sips isotherm equations. It was found that the Sips isotherm equation most closely fitted the experimental data with an R 2 value of 0.96716 and a binding affinity of 1.649 ppm −1 .

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In situ synthesis of multi-functional gelatin/resorcinol/silver nanoparticles composite films

Cited by 38 publications

References 43 publications

Investigation of Ultrasonic Treatment on Physicochemical, Structural and Morphological Properties of Sodium Alginate/AgNPs/Apple Polyphenol Films and Its Preservation Effect on Strawberry

Investigation of Ultrasonic Treatment on Physicochemical, Structural and Morphological Properties of Sodium Alginate/AgNPs/Apple Polyphenol Films and Its Preservation Effect on Strawberry

Recent developments in antimicrobial and antifouling coatings to reduce or prevent contamination and cross‐contamination of food contact surfaces by bacteria

Label-free Binding Analysis of 4-(2-Pyridylazo)-resorcinol-based Composite Layer with Cobalt Ion Using Surface Plasmon Resonance Optical Sensor

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