A Novel Intelligent Indicator Film: Preparation, Characterization, and Application

Han, Bing; Chen, Peifeng; Guo, Jiaxuan; Yu, Hongliang; Zhong, Shaojing; Li, Dongmei; Liu, Chunhong; Feng, Zhibiao; Jiang, Bin

doi:10.3390/molecules28083384

Cited by 33 publications

(8 citation statements)

References 54 publications

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“…To ensure that the grafting of methacrylate did not impart the antioxidant properties of tannic acid derivatives, the radical scavenging activity (RSA) of the tannins was assessed by spectrophotometry. Various techniques are described in the literature for assessing the anti-free radical activity of a compound [51,52]. They are based on the reaction between a free radical and the molecule to be tested.…”

Section: Tannic Acid Methacrylation and Characterizationmentioning

confidence: 99%

Chemical Modification of Commercial Fabrics by Photoinduced Grafting Tannic Acid to Produce Antioxidant and Antibacterial Textiles

Fouilloux,

Abbad Andaloussi,

Langlois

et al. 2024

Sustainability

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The goal of this study was to provide antioxidant and antibacterial properties to different types of fabrics via tannic acid (TA) covalent grafting. To that extent, TA was first methacrylated using glycidylmethacrylate. TA derivatives were characterized using infrared spectroscopy and 1H NMR to assess the degree of acrylation. Antioxidant and antibacterial properties of TA were preserved after chemical modification. The coating process was studied using infrared spectroscopy (IR), weight gain, and radical scavenging activity (RSA) measurements. To covalently bond TA to raw polypropylene (PP) and PP coated with chitosan, photoinduced grafting was performed. The process was optimized and resulted in fabrics with enough tannic acid to provide strong antioxidant activity, with RSA ranging at 95%. The antibacterial activity was assessed against E. coli and S. aureus, the main strains responsible for nosocomial infections. Results revealed a substantial reduction of bacterial contamination for PP samples coated with chitosan, with stronger activity against E. coli, attributed to hydrophobic repellence. This study highlights the benefits of using tannic acid to obtain antioxidant and antibacterial fabrics.

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Section: Tannic Acid Methacrylation and Characterizationmentioning

confidence: 99%

Chemical Modification of Commercial Fabrics by Photoinduced Grafting Tannic Acid to Produce Antioxidant and Antibacterial Textiles

Fouilloux,

Abbad Andaloussi,

Langlois

et al. 2024

Sustainability

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“…Specifically, the age, temperature, and freshness of the package contents can be monitored by integrating an appropriate indicator or sensor inside or outside the packaging. For example, thermochromic ink has been used to indicate the temperature of beer in a metal or glass container [ 6 ], while an edible, anthocyanin-loaded film has been used to exhibit a color change in response to a change in pH caused by the deterioration of stored food (salmon) [ 7 ]. In another study, two pH-sensitive dyes extracted from blueberry and red grape skin pomace were incorporated into edible films to provide visible color changes due to the spoilage of stored chicken meat [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Smart and UV-Resistant Edible Coating and Films Based on Alginate, Whey Protein, and Curcumin

Botalo,

Inprasit,

Ummartyotin

et al. 2024

Polymers

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In this work, smart edible coating and films with excellent UV barrier properties were prepared from alginate, whey protein isolate, and curcumin. The primary focus of this investigation centered on assessing the impact of whey protein and curcumin on the physical and functional properties of the alginate films. Whey protein reduced the film transparency while simultaneously enhancing the hydrophobicity and antioxidant properties of the alginate film. Curcumin imparted a yellow hue to the film, consequently decreasing the transparency of the film. It also substantially improved hydrophobicity, antioxidant activity, and UV-blocking efficiency within the films. Remarkably, curcumin demonstrated a significant reduction in the water vapor transmission rate of the film. For the preservation of apples, a higher concentration of curcumin was required, which effectively suppressed the respiration rate and moisture loss post-harvest, resulting in an extended shelf-life for the apples. As a result, the coated apples exhibited significantly reduced enzymatic browning and weight loss in comparison to their uncoated counterparts. Furthermore, these curcumin-containing films underwent a reversible color change from orange to red when exposed to ammonia vapor. This attribute highlights the potential of the developed coating and film as a smart, active food packaging solution, particularly for light-sensitive food products.

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“…One method that can provide this possibility is the in situ synthesis (denoted as ISS) process [ 67 ] where a polymeric matrix is firstly doped with silver ions (Ag + ) and a further reduction step is performed in order to obtain AgNPs perfectly distributed along the thin-film surface [ 68 ]. The implementation nanofibers doped with AgNPs can be used in the design of active packaging to increase the shelf life of food or even to exert an inhibitory effect on fungal growth [ 69 , 70 , 71 ].…”

Section: Introductionmentioning

confidence: 99%

Antifungal Activity of Chitosan/Poly(Ethylene Oxide) Blend Electrospun Polymeric Fiber Mat Doped with Metallic Silver Nanoparticles

Murillo,

Rivero,

Sandúa

et al. 2023

Polymers

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In this work, the implementation of advanced functional coatings based on the combination of two compatible nanofabrication techniques such as electrospinning and dip-coating technology have been successfully obtained for the design of antifungal surfaces. In a first step, uniform and beadless electrospun nanofibers of both polyethylene oxide (PEO) and polyethylene (PEO)/chitosan (CS) blend samples have been obtained. In a second step, the dip-coating process has been gradually performed in order to ensure an adequate distribution of silver nanoparticles (AgNPs) within the electrospun polymeric matrix (PEO/CS/AgNPs) by using a chemical reduction synthetic process, denoted as in situ synthesis (ISS). Scanning electron microscopy (SEM) has been used to evaluate the surface morphology of the samples, showing an evolution in average fiber diameter from 157 ± 43 nm (PEO), 124 ± 36 nm (PEO/CS) and 330 ± 106 nm (PEO/CS/AgNPs). Atomic force microscopy (AFM) has been used to evaluate the roughness profile of the samples, indicating that the ISS process induced a smooth roughness surface because a change in the average roughness Ra from 84.5 nm (PEO/CS) up to 38.9 nm (PEO/CS/AgNPs) was observed. The presence of AgNPs within the electrospun fiber mat has been corroborated by UV-Vis spectroscopy thanks to their characteristic optical properties (orange film coloration) associated to the Localized Surface Plasmon Resonance (LSPR) phenomenon by showing an intense absorption band in the visible region at 436 nm. Energy dispersive X-ray (EDX) profile also indicates the existence of a peak located at 3 keV associated to silver. In addition, after doping the electrospun nanofibers with AgNPs, an important change in the wettability with an intrinsic hydrophobic behavior was observed by showing an evolution in the water contact angle value from 23.4° ± 1.3 (PEO/CS) up to 97.7° ± 5.3 (PEO/CS/AgNPs). The evaluation of the antifungal activity of the nanofibrous mats against Pleurotus ostreatus clearly indicates that the presence of AgNPs in the outer surface of the nanofibers produced an important enhancement in the inhibition zone during mycelium growth as well as a better antifungal efficacy after a longer exposure time. Finally, these fabricated electrospun nanofibrous membranes can offer a wide range of potential uses in fields as diverse as biomedicine (antimicrobial against human or plant pathogen fungi) or even in the design of innovative packaging materials for food preservation.

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A Novel Intelligent Indicator Film: Preparation, Characterization, and Application

Cited by 33 publications

References 54 publications

Chemical Modification of Commercial Fabrics by Photoinduced Grafting Tannic Acid to Produce Antioxidant and Antibacterial Textiles

Chemical Modification of Commercial Fabrics by Photoinduced Grafting Tannic Acid to Produce Antioxidant and Antibacterial Textiles

Smart and UV-Resistant Edible Coating and Films Based on Alginate, Whey Protein, and Curcumin

Antifungal Activity of Chitosan/Poly(Ethylene Oxide) Blend Electrospun Polymeric Fiber Mat Doped with Metallic Silver Nanoparticles

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